References of "Scientific journals"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailSymetrie et reproductibilite temporelle des donnees neurographiques.
Bouquiaux, Olivier ULiege; Horward, A.; Wang, François-Charles ULiege

in Neurophysiologie Clinique = Clinical Neurophysiology (2003), 33(4), 185-95

The aims of the present study are to document side-to-side differences and temporal variability, between two trials (T1 and T2 at a time interval of 3 months) of nerve conduction measurements collected ... [more ▼]

The aims of the present study are to document side-to-side differences and temporal variability, between two trials (T1 and T2 at a time interval of 3 months) of nerve conduction measurements collected from 30 healthy subjects (mean age 22 +/- 2 years). METHODS: The protocol at T1 consisted of motor nerve conduction studies of median, ulnar, peroneal and tibial nerves bilaterally, with measurement of (a) motor response size (amplitude and area); (b) terminal latency; (c) minimal, mean and maximal F-wave latency; (d) motor conduction velocity; and (e) F-wave occurrence. T1 also involved sensory nerve conduction studies of median, ulnar, radial, lateral and medial cutaneous, sural and superficial peroneal nerves bilaterally, with measurement of sensory potential size (amplitude and area) and computation of sensory conduction velocity. The protocol at T2 consisted of identical measurements from the dominant side. RESULTS AND CONCLUSION: There was a negative relationship between the variability of parameters evaluating nervous conduction and the length of the nerve segment under study. Thus, the smallest side-to-side and temporal variabilities are measured for minimal F-wave latencies (on average 2-3%). The limits of symmetry and temporal variability are particularly useful for diagnosis of unilateral peripheral neuropathy or neurophysiological follow-up of patients with neuropathy, when the variability of the parameter under study is weak and when there is a high correlation between values recorded on the left and on the right or at T1 and T2. This was the case for motor response size of tibial and ulnar nerves, sensory potential size of radial nerve and minimal F-wave latencies from each studied motor nerve. [less ▲]

Detailed reference viewed: 24 (2 ULiège)
Full Text
Peer Reviewed
See detailVitamine E : état des connaissances chez les carnivores domestiques.I. Chimie, sources alimentaires et dosage
Cuvelier, Christine ULiege; Dotreppe, Olivier ULiege; Diez, Marianne ULiege et al

in Annales de Médecine Vétérinaire (2003), 147

Vitamin E is a part of the defence mechanism for the inactivation of free radicals and is therefore implicated in the oxidative stress. Chemistry of vitamin E is relatively complex. Vitamin E includes 2 ... [more ▼]

Vitamin E is a part of the defence mechanism for the inactivation of free radicals and is therefore implicated in the oxidative stress. Chemistry of vitamin E is relatively complex. Vitamin E includes 2 large groups of molecules, tocopherols and tocotrienols, each including 32 stereoisomers. Vitamin E is synthesized in plants, algae, and moulds but not in animals. The greatest quantities of vitamin E are found in cereals and vegetable oils. Vitamin E analyses are difficult to perform. After treatment of a sample with an organic solvent such as ethanol, vitamin E is usually extracted into hexane. Identification and quantification are carried out mainly by chromatography such as normal-phase liquid chromatography and reversed-phase liquid chromatography. [less ▲]

Detailed reference viewed: 82 (6 ULiège)
Full Text
Peer Reviewed
See detailEvaluation des risques biomécaniques pour la colonne lombaire au moyen d'un questionnaire
Somville, Pierre-René ULiege; Mairiaux, Philippe ULiege

in Médecine du Travail & Ergonomie= Arbeidsgezondheidszorg & Ergonomie (2003), 40(1), 5-17

Detailed reference viewed: 162 (21 ULiège)
Full Text
Peer Reviewed
See detailLack of trans-activation function for Maedi Visna virus and Caprine arthritis encephalitis virus Tat proteins
Villet, S.; Faure, C.; Bouzar, Amel ULiege et al

in Virology (2003)

Detailed reference viewed: 13 (2 ULiège)
Full Text
Peer Reviewed
See detailInteractions of cryptolepine and neocryptolepine with unusual DNA structures
Guittat, Lionel; Alberti, Patrizia; Rosu, Frédéric ULiege et al

in Biochimie (2003), 85(5), 535-547

Cryptolepine, the main alkaloid present in the roots of Cryptolepis sanguinolenta, presents a large spectrum of biological properties. It has been reported to behave like a DNA intercalator with a ... [more ▼]

Cryptolepine, the main alkaloid present in the roots of Cryptolepis sanguinolenta, presents a large spectrum of biological properties. It has been reported to behave like a DNA intercalator with a preference for GC-rich sequences. In this study, dialysis competition assay and mass spectrometry experiments were used to determine the affinity of cryptolepine and neocryptolepine for DNA structures among duplexes, triplexes, quadruplexes and single strands. Our data confirm that cryptolepine and neocryptolepine prefer GC over AT-rich duplex sequences, but also recognize triplex and quadruplex structures. These compounds are weak telomerase inhibitors and exhibit a significant preference for triplexes over quadruplexes or duplexes. (C) 2003 Editions scientifiques et medicales Elsevier SAS and Societe francaise de biochimie et biologic moleculaire. All rights reserved. [less ▲]

Detailed reference viewed: 115 (5 ULiège)
Full Text
Peer Reviewed
See detailStrategies de prevention du diabete de type 1: le point en 2003.
Philips, Jean-Christophe ULiege; Scheen, André ULiege

in Revue Médicale de Liège (2003), 58(4), 211-9

Type 1 diabetes is caused by a progressive autoimmune destruction of insulin-producing B cells of the pancreatic islets of Langerhans. The autoimmune process begins years before the B-cell destruction ... [more ▼]

Type 1 diabetes is caused by a progressive autoimmune destruction of insulin-producing B cells of the pancreatic islets of Langerhans. The autoimmune process begins years before the B-cell destruction becomes complete, thereby providing an opportunity for early intervention. Genetic susceptibility markers have been identified and autoantibody assays make possible the identification of individuals at high risk of the disease. Prevention strategies could be implemented in first-degree relatives of type 1 diabetic patients at high risk of developing the disease because of the presence of several autoantibodies. Alternatively, they may also be considered at time of clinical diagnosis of type 1 diabetes mellitus in order to maintain residual endogenous insulin secretion that markedly contributes to long-term better glycaemic stability. Thus, the goals of prevention are to preserve B cells during the preclinical period and/or after early diagnosis by modifying immunological pathogenic processes. Several molecules have been administered or are currently investigated to achieve this protection. This article summarizes the hopes and deceptions of previous clinical trials and describes the rationale and protocols of ongoing trials dealing with the prevention of type 1 diabetes. [less ▲]

Detailed reference viewed: 194 (1 ULiège)
Full Text
Peer Reviewed
See detailDevelopment and evaluation of an automated atlas-based image analysis method for microPET studies of the rat brain.
Rubins, Daniel J.; Melega, William P.; Lacan, Goran et al

in NeuroImage (2003), 20(4), 2100-18

An automated method for placement of 3D rat brain atlas-derived volumes of interest (VOIs) onto PET studies has been designed and evaluated. VOIs representing major structures of the rat brain were ... [more ▼]

An automated method for placement of 3D rat brain atlas-derived volumes of interest (VOIs) onto PET studies has been designed and evaluated. VOIs representing major structures of the rat brain were defined on a set of digitized cryosectioned images of the rat brain. For VOI placement, each PET study was registered with a synthetic PET target constructed from the VOI template. Registration was accomplished with an automated algorithm that maximized the mutual information content of the image volumes. The accuracy and precision of this method for VOI placement was determined using datasets from PET studies of the striatal dopamine and hippocampal serotonin systems. Each evaluated PET study could be registered to at least one synthetic PET target without obvious failure. Registration was critically dependent upon the initial position of the PET study relative to the synthetic PET target, but not dependent on the amount of synthetic PET target smoothing. An evaluation algorithm showed that resultant radioactivity concentration measurements of selected brain structures had errors=2% due to misalignment with the corresponding VOI. Further, radioligand binding values calculated from these measurements were found to be more precise than those calculated from measurements obtained with manually drawn regions of interest (ROIs). Overall, evaluation results demonstrated that this atlas-derived VOI method can be used to obtain unbiased measurements of radioactivity concentration from PET studies. Its automated features, and applicability to different radioligands and brain regions, will facilitate quantitative rat brain PET assessment procedures. [less ▲]

Detailed reference viewed: 61 (5 ULiège)
Full Text
Peer Reviewed
See detailQu'est-ce qu'un éditeur ? Naissance de la fonction éditoriale
Durand, Pascal ULiege

in Texte : Revue de Critique et de Théorie Littéraire (2003), (31-32), 13-55

Cet article, après avoir mis en évidence les transformations du système de production du livre au XVIIIe siècle, envisage les facteurs divers ayant déterminé, en France, l'émergence commune, sous la ... [more ▼]

Cet article, après avoir mis en évidence les transformations du système de production du livre au XVIIIe siècle, envisage les facteurs divers ayant déterminé, en France, l'émergence commune, sous la Monarchie de Juillet, des deux figures à la fois sociales et symboliques de l'Auteur et de l'Editeur : facteurs politico-juridiques, socio-économiques, mais aussi culturels et esthétiques. Il décrit ensuite la morphologie du champ éditorial du XIXe siècle et met en lumière les articulations étroites que celui-ci entretient avec les structures du champ littéraire. [less ▲]

Detailed reference viewed: 355 (13 ULiège)
Full Text
Peer Reviewed
See detailOccurrence of sulphides on the bornite-idaite join from Vielsalm, Stavelot Massif, Belgium
Hatert, Frédéric ULiege

in European Journal of Mineralogy (2003), 15(6, NOV-DEC), 1063-1068

Sulphides with chemical compositions between idaite and bornite have been identified from several quartz veins crosscutting Ordovician schists in Vielsalm, Belgium. Idaite is an oxidation product of ... [more ▼]

Sulphides with chemical compositions between idaite and bornite have been identified from several quartz veins crosscutting Ordovician schists in Vielsalm, Belgium. Idaite is an oxidation product of bornite, and occurs in the more oxidised parts of the quartz veins. The alteration sequence bomite --> "anomalous bornite" --> idaite is observed, associated with the growth of chalcopyrite lamellae parallel to the {100} and {111} directions of precursor bornite. Electron microprobe analyses indicate a chemical composition significantly enriched in Cu, when compared with the ideal composition of idaite, Cu3FeS4, as well as a progressive compositional evolution from bomite to idaite. The X-ray powder pattern is indexed in the space group I (4) over bar 2m, similar to that of stannite, and gives the unit-cell parameters a = 5.279(4) and c = 10.47(2) Angstrom. [less ▲]

Detailed reference viewed: 33 (2 ULiège)
Full Text
Peer Reviewed
See detailIntercalative polymerization of cyclic esters in layered silicates : thermal vs. catalytic activation
Pantoustier, Nadège; Alexandre, Michaël ULiege; Degée, Philippe et al

in Composite Interfaces (2003), 10(4-5), 423-433

Poly(ε-caprolactone) layered silicate nanocomposites were synthesized by in situ inter-calative ring-opening polymerization (ROP) of ε-caprolactone. The polymerization was promoted by thermal or catalytic ... [more ▼]

Poly(ε-caprolactone) layered silicate nanocomposites were synthesized by in situ inter-calative ring-opening polymerization (ROP) of ε-caprolactone. The polymerization was promoted by thermal or catalytic initiation starting from either non-modified natural sodium-montmorillonite (MMT-Na) or montmorillonite modified by different ammonium cations bearing either non-functional alkyl chains or chains terminated by carboxylic acid or hydroxyl functions. The resulting compositions were analyzed by small-angle X-ray diffraction and transmission electron microscopy. The clay dispersion depended on the structure of the alkyl ammonium. Exfoliated nanocomposites were formed when hydroxyl-containing alkyl-ammonium was used; otherwise, partially intercalated/partially exfoliated structures were observed. Moreover, caving to the inherent catalytic properties of the montmo-rillomte surface, it was also possible to prepare intercalated nanocomposites by in situ polymerization of ε-caprolactone in presence of non-modified montmorillonite-Na (MMT-Na) without any added catalyst. [less ▲]

Detailed reference viewed: 60 (5 ULiège)
Full Text
Peer Reviewed
See detailP2X1-mediated ERK2 activation amplifies the collagen-induced platelet secretion by enhancing myosin light chain kinase activation.
Oury, Cécile ULiege; Toth-Zsamboki, Emese; Cornelissen, Heidi et al

in Journal of Biological Chemistry (2003)

This study shows that, at low doses of collagen, glycoprotein VI activation leads to early protein kinase C- and MLC kinase-dependent platelet degranulation. Rapidly released ATP triggers P2X1 -mediated ... [more ▼]

This study shows that, at low doses of collagen, glycoprotein VI activation leads to early protein kinase C- and MLC kinase-dependent platelet degranulation. Rapidly released ATP triggers P2X1 -mediated Ca2+ influx, activating ERK2, in turn amplifying platelet secretion by reinforcing the early MLC kinase phosphorylation. Hence, the P2X1-ERK2-MLC axis contributes to collagen-induced platelet activation by enhancing platelet degranulation. [less ▲]

Detailed reference viewed: 26 (5 ULiège)
Full Text
Peer Reviewed
See detailAnalysis Of Accessible Surface Of Residues In Proteins
Lins, Laurence ULiege; Thomas, Annick ULiege; Brasseur, Robert ULiege

in Protein Science : A Publication of the Protein Society (2003), 12(7),

Detailed reference viewed: 8 (0 ULiège)
Full Text
Peer Reviewed
See detailAn approach for dividing models of biological reaction networks into functional units
Ederer, Michael; Sauter, Thomas; Bullinger, Eric ULiege et al

in Simulation: Trans. Society for Modeling and Simulation International (2003), 79(12), 703-716

Biological reaction networks consist of many substances and reactions between them. Like many other biological systems, they have a modular structure. Therefore, a division of a biological reaction ... [more ▼]

Biological reaction networks consist of many substances and reactions between them. Like many other biological systems, they have a modular structure. Therefore, a division of a biological reaction network into smaller units highly facilitates its investigation. The authors propose an algorithm to divide an ordinary differential equation (ODE) model of a biological reaction network hierarchically into functional units. For every compound, an activity function dependent on concentration or concentration change rate is defined. After performing suitable simulations, distances between the compounds are computed by comparing the activities along the trajectories of the simulation. The distance information is used to generate a dendrogram revealing the internal structure of the reaction network. The algorithm identifies functional units in two models of different networks: catabolite repression in Escherichia coli and epidermal growth factor (EGF) signal transduction in mammalian cells. [less ▲]

Detailed reference viewed: 17 (2 ULiège)
Full Text
Peer Reviewed
See detailReduced Cell Turnover In Bovine Leukemia Virus-Infected, Persistently Lymphocytotic Cattle
Debacq, C.; Asquith, B.; Reichert, M. et al

in Journal of Virology (2003), 77(24),

Detailed reference viewed: 11 (1 ULiège)
Full Text
Peer Reviewed
See detailBiogeographical Observations On Four Scolytids (Coleoptera, Scolytidae) And One Lymexylonid (Coleoptera, Lymexylonidae) In Wallonia (Southern Belgium)
Henin, Jm.; Huart, O.; Rondeux, Jacques ULiege

in Belgian Journal of Zoology (2003), 133(2), 175-180

Following a very sudden, early and deep frost at the end of autumn 1998, the availability of weakened trees (mainly beech trees) reached very high levels in Southern Belgium in the spring of 1999 ... [more ▼]

Following a very sudden, early and deep frost at the end of autumn 1998, the availability of weakened trees (mainly beech trees) reached very high levels in Southern Belgium in the spring of 1999. Consequently, the ambrosia beetles Trypodendron domesticum L. and T. signatum (Fabricius) (Coleoptera, Scolytidae) initiated outbreaks and, in 2000 and 2001, they heavily contributed to the depreciation of nearly 1,600,000 m3 of stem volume (to upper limit girth of 22 cm) in the natural regions of “Ardenne” and “Belgian Lorraine”. Because of the lack of biogeographical data on both insects, of their conspicuous aggressiveness towards apparently healthy trees and of the economic importance of the beech wood chain in Belgium, a large-scale survey was undertaken in 2001, in order to outline the range of both ambrosia beetles in Wallonia. To this effect, a network of 172 traps baited with ethanol was set up, attempting to cover the Walloon beech forest as representatively as possible. Two other scolytids and one lymexylonid were also frequently caught, which made it possible to outline their regional distribution too. Although the damage was limited to the Ardenne and Belgian Lorraine, T. domesticum and T. signatum are widespread throughout Wallonia. We discuss these results, their long-term validity, the secondary pest status of these insects and the need for a permanent monitoring of the major forest pest species and diseases. [less ▲]

Detailed reference viewed: 53 (7 ULiège)
Full Text
Peer Reviewed
See detail3D h-phi finite element formulation for the computation of a linear transverse flux actuator
Deliège, Geoffrey ULiege; Henrotte, François; Vande Sande, Hans et al

in COMPEL (2003), 22(4), 1077-1088

Detailed reference viewed: 16 (0 ULiège)
Full Text
Peer Reviewed
See detailCell Handling, Membrane-Binding Properties, And Membrane-Penetration Modeling Approaches Of Pivampicillin And Phthalimidomethylampicillin, Two Basic Esters Of Ampicillin, In Comparison With Chloroquine And Azithromycin
Chanteux, H.; Paternotte, I.; Mingeot-Leclercq, Mp. et al

in Pharmaceutical Research (2003), 20(4), 624-31

PURPOSE: The purpose of this work was to examine and understand the cellular pharmacokinetics of two basic esters of ampicillin, pivaloyloxymethyl (PIVA) and phthalimidomethyl (PIMA), in comparison with ... [more ▼]

PURPOSE: The purpose of this work was to examine and understand the cellular pharmacokinetics of two basic esters of ampicillin, pivaloyloxymethyl (PIVA) and phthalimidomethyl (PIMA), in comparison with lysosomotropic drugs (chloroquine, azithromycin). METHODS: Cell culture studies (J774 macrophages) were undertaken to study uptake and release kinetics and to assess the influence of concentration, pH, proton ionophore (monensin), and MRP and P-gp inhibitors (probenecid, gemfibrozil, cyclosporin A, GF 120918). Equilibrium dialysis with liposomes were performed to directly asses the extent of drug binding to bilayers. Conformational analysis modeling of the drug penetration in bilayers was conducted to rationalize the experimental observations. RESULTS: PIVA and PIMA showed properties in almost complete contrast with those of chloroquine and azithromycin, i.e., fast apparent accumulation and fast release at 4 degrees C as well as at 37 degrees C, saturation of uptake (apparent Kd 40 microM), no influence of monensin, MRP, or P-gp inhibitors; tight binding to liposomes (Kd approx. 40 microM); and sharp increase in calculated free energy when forced in the hydrophobic domain. CONCLUSIONS: Although they are weak organic bases, PIVA and PIMA show none of the properties of lysosomotropic agents. We hypothesize that they remain locked onto the pericellular membrane and may never penetrate cells as such in significant amounts. [less ▲]

Detailed reference viewed: 6 (0 ULiège)
Full Text
Peer Reviewed
See detailL'image du mois. Hématome hépatique après une réanimation cardio-pulmonaire
Delanaye, Pierre ULiege; De Fooz, Geoffroy; NCHIMI LONGANG, Alain ULiege et al

in Revue Médicale de Liège (2003), 58(7-8, Jul-Aug), 463-464

Detailed reference viewed: 85 (7 ULiège)
Full Text
Peer Reviewed
See detailCellular Uptake Of Antennapedia Penetratin Peptides Is A Two-Step Process In Which Phase Transfer Precedes A Tryptophan-Dependent Translocation
Dom, G.; Shaw-Jackson, C.; Matis, C. et al

in Nucleic Acids Research (2003), 31(2), 556-61

Several homeodomains and homeodomain-containing proteins enter live cells through a receptor- and energy-independent mechanism. Translocation through biological membranes is conferred by the third alpha ... [more ▼]

Several homeodomains and homeodomain-containing proteins enter live cells through a receptor- and energy-independent mechanism. Translocation through biological membranes is conferred by the third alpha-helix of the homeodomain, also known as Penetratin. Biophysical studies demonstrate that entry of Penetratin into cells requires its binding to surface lipids but that binding and translocation are differentially affected by modifications of some physico-chemical properties of the peptide, like helical amphipathicity or net charge. This suggests that the plasma membrane lipid composition affects the internalization of Penetratin and that internalization requires both lipid binding and other specific properties. Using a phase transfer assay, it is shown that negatively charged lipids promote the transfer of Penetratin from a hydrophilic into a hydrophobic environment, probably through charge neutralization. Accordingly, transfer into a hydrophobic milieu can also be obtained in the absence of negatively charged lipids, by the addition of DNA oligonucleotides. Strikingly, phase transfer by charge neutralization was also observed with a variant peptide of same charge and hydrophobicity in which the tryptophan at position 6 was replaced by a phenylalanine. However, Penetratin, but not its mutant version, is internalized by live cells. This underscores that charge neutralization and phase transfer represent only a first step in the internalization process and that further crossing of a biological membrane necessitates the critical tryptophan residue at position 6. [less ▲]

Detailed reference viewed: 25 (1 ULiège)
Full Text
Peer Reviewed
See detailCombined enzymatic hydrolysis and HPAEC method for simultaneous analysis of galacturonic acid and neutral sugars of pectin.
Garna, H.; Mabon, N.; Wathelet, Bernard ULiege et al

in Communications in Agricultural and Applied Biological Sciences (2003), 68(2 Pt A), 297-300

Detailed reference viewed: 72 (4 ULiège)
Full Text
Peer Reviewed
See detailEpidural hematoma after cervical spine surgery.
Hans, Pol ULiege; Delleuze, Pierre Philippe; Born, Jacques Daniel et al

in Journal of Neurosurgical Anesthesiology (2003), 15(3), 282-5

The authors report an acute epidural hematoma after the surgical removal of a cervical C6-C7 disc herniation through an anterolateral approach of the cervical spine. Clinical history consisted of ... [more ▼]

The authors report an acute epidural hematoma after the surgical removal of a cervical C6-C7 disc herniation through an anterolateral approach of the cervical spine. Clinical history consisted of respiratory distress and flaccid tetraplegia that appeared 2.5 hours after surgery. Without any complementary radiologic investigation, the patient was immediately transferred to the operating room for a second look, which was unsuccessful. Magnetic resonance imaging performed after this second surgical procedure showed an anterior cervical hematoma extending from C3 to T3 without significant spinal cord compression. A cervical laminectomy was performed to evacuate the hematoma. The patient was extubated the next morning and discharged from the hospital after 5 days with no residual neurologic deficit. An extensive postoperative investigation revealed no coagulation disorder. [less ▲]

Detailed reference viewed: 82 (3 ULiège)
Full Text
See detailBiodiversity, molecular phylogeny, and trophodynamics of amphipod crustaceans in the Antarctic deep-sea
De Broyer, Claude; Dauby, Patrick ULiege; Nyssen, Fabienne et al

in Berichte zur Polar- und Meeresforschung (2003), 470

Detailed reference viewed: 45 (1 ULiège)
Full Text
Peer Reviewed
See detailMicroscopic spectral density in random matrix models for chiral and diquark condensation
Vanderheyden, Benoît ULiege; Jackson, A. D.

in Physical Review D (2003), 67(8), 085016

We examine random matrix models of QCD which are capable of supporting both chiral and diquark condensation. A numerical study of the spectral densities near zero virtuality shows that the introduction of ... [more ▼]

We examine random matrix models of QCD which are capable of supporting both chiral and diquark condensation. A numerical study of the spectral densities near zero virtuality shows that the introduction of color in the interactions does not alter the one-body results imposed by chiral symmetry. A model with three colors has the spectral density predicted for the chiral ensemble with a Dyson index beta=2; a pseudoreal model with two colors exhibits the spectral density of the chiral ensemble with beta=1. [less ▲]

Detailed reference viewed: 23 (3 ULiège)
Full Text
Peer Reviewed
See detailThe course of some bone remodelling plasma metabolites in healthy horses and in horses offered a calcium-deficient diet.
de Behr, V.; Daron, D.; Gabriel, Annick ULiege et al

in Journal of Animal Physiology & Animal Nutrition (2003), 87(3-4), 149-59

An inquiry was carried out to assess the concentrations of plasma metabolites related to bone remodelling in 21 saddle horses of Warmblood breed aged 4-26 years, five draught horses of Ardennes breed aged ... [more ▼]

An inquiry was carried out to assess the concentrations of plasma metabolites related to bone remodelling in 21 saddle horses of Warmblood breed aged 4-26 years, five draught horses of Ardennes breed aged 4-10 years, and 10 Ardennes foals aged 9-11 months. They were fed according to normal feeding practice in Belgium. The changes in some bone remodelling plasma metabolite concentrations were studied when an unbalanced diet was offered and later corrected for four Warmblood horses. Bone formation was evaluated by bone alkaline phosphatase (BALP), total alkaline phosphatase (TALP) and osteocalcin (bone gla-protein, OC). Bone resorption was assessed by hydroxyproline (HYP). Total calcium, ionized calcium, phosphorus (P) and 25-hydroxyvitamin D3 [25-(OH)D] concentrations were more or less constant. The comparison of four bone remodelling factors between the Ardennes and Warmblood horses showed higher concentrations in the Ardennes breed. Bone marker concentrations decreased according to age. The correction of the unbalanced Ca : P diet induced inconsistent effects at plasma level. The interpretation of the different bone parameters appeared to be difficult if not associated with other parameters such as a complete anamnesis and clinical examination of the animal in addition to dietary evaluation. [less ▲]

Detailed reference viewed: 32 (1 ULiège)
Full Text
See detailLa participation du plaignant à la procédure en infraction au droit communautaire diligentée par la Commission
Munoz, Rodolphe ULiege

in Revue du Marché Commun et de l'Union Européenne (2003), 472

La procédure en manquement est l’instrument principal de la Commission pour assurer que le droit communautaire est correctement mis en oeuvre au niveau national. La majorité des affaires, traitées dans le ... [more ▼]

La procédure en manquement est l’instrument principal de la Commission pour assurer que le droit communautaire est correctement mis en oeuvre au niveau national. La majorité des affaires, traitées dans le cadre de ce recours, a son origine dans les plaintes provenant de personnes physiques ou morale. Cependant, la Commission conserve un droit de regard important dans la mise en oeuvre de la procédure en manquement. En effet, elle est la seule à décider de l’opportunité d’ouvrir une procédure en manquement et peut à tout moment de la procédure décider d’arrêter les poursuites contre un Etat. Cette liberté s’explique par le fait que la Commission est une institution indépendante et représentant l’intérêt général communautaire. Cependant, il est logique que l’intérêt communautaire puisse ne pas coïncider avec l’intérêt des particuliers. Par conséquent, à plusieurs reprises les particuliers ont tenté de limiter ce pouvoir discrétionnaire de la Commission. Néanmoins, la Cour de justice a toujours refusé de remettre en cause ce pouvoir. Cette communication a pour but de clarifier les pouvoirs de la Commission. De fait, suite à une affaire portée devant le médiateur, la Commission s’est engagée à "codifier" les pratiques existantes afin que les plaignants connaissent l’ensemble des différents stades de la procédure. Ainsi, cette communication donne une vision globale de la gestion des plaintes par la Commission. [less ▲]

Detailed reference viewed: 114 (4 ULiège)
Full Text
Peer Reviewed
See detailCTD measurements, with emphasis on Elephant Island surroundings
Dauby, Patrick ULiege

in Berichte zur Polar- und Meeresforschung (2003), 470

Detailed reference viewed: 17 (1 ULiège)
Full Text
Peer Reviewed
See detailChanging Patterns of Political Participation of Citizens of Immigrant Origin in the Brussels Capital Region. The October 2000 Elections
Martiniello, Marco ULiege; Rea, Andrea; Jacobs, Dirk

in Journal of International Migration & Integration (2003), 3(2), 201-221

The October 2000 elections did constitute a landmark for the political participation of immigrant origin citizens in the Brussels Capital Region. There was a remarkable increase of elected Belgian ... [more ▼]

The October 2000 elections did constitute a landmark for the political participation of immigrant origin citizens in the Brussels Capital Region. There was a remarkable increase of elected Belgian politicians of non-EU–mainly Moroccan–origin. In this contribution we want to discuss the changing patterns of political participation of immigrant origin citizens in the Brussels Capital Region as seen in the most recent local elections. We contextualize the electoral success of Turkish and (mainly) Moroccan politicians and the poor involvement of EU citizens in the recent elections. To this purpose, we also discuss the political situation in the bilingual region of Brussels, Belgian citizenship law and regulations for political participation of foreign residents. [less ▲]

Detailed reference viewed: 37 (10 ULiège)
Full Text
Peer Reviewed
See detailDevelopment Of Real-Time Pcr For The Rapid Detection Of Episomal Banana Streak Virus (Bsv)
Delanoy, Martine; Salmon, Marc ULiege; Kummert, Jean et al

in Plant Disease (2003), 87(1), 33-38

Detailed reference viewed: 38 (6 ULiège)
Full Text
Peer Reviewed
See detailDiurnal Centroid Of Ecosystem Energy And Carbon Fluxes At Fluxnet Sites
Wilson, Kb.; Baldocchi, D.; Falge, E. et al

in Journal of Geophysical Research. Atmospheres (2003), 108(D21),

Detailed reference viewed: 34 (5 ULiège)
Full Text
Peer Reviewed
See detailStratégies de fusion d’images P/XS basées sur les principes colorimétriques et l’Egalisation de Statistiques Locales
Cornet, Yves ULiege; Schenke, Christophe ULiege; De Bethune, S. et al

in Bulletin de la Société Française de Photogrammétrie et Télédétection (2003), 169

Detailed reference viewed: 79 (20 ULiège)
Full Text
Peer Reviewed
See detailSoluble transferrin receptor for the evaluation of erythropoiesis and iron status.
Beguin, Yves ULiege

in Clinica Chimica Acta (2003), 329(1-2), 9-22

Iron transport in the plasma is carried out by transferrin, which donates iron to cells through its interaction with a specific membrane receptor, the transferrin receptor (TfR). A soluble form of the TfR ... [more ▼]

Iron transport in the plasma is carried out by transferrin, which donates iron to cells through its interaction with a specific membrane receptor, the transferrin receptor (TfR). A soluble form of the TfR (sTfR) has been identified in animal and human serum. Soluble TfR is a truncated monomer of tissue receptor, lacking its first 100 amino acids, which circulates in the form of a complex of transferrin and its receptor. The erythroblasts rather than reticulocytes are the main source of serum sTfR. Serum sTfR levels average 5.0+/-1.0 mg/l in normal subjects but the various commercial assays give disparate values because of the lack of an international standard. The most important determinant of sTfR levels appears to be marrow erythropoietic activity which can cause variations up to 8 times below and up to 20 times above average normal values. Soluble TfR levels are decreased in situations characterized by diminished erythropoietic activity, and are increased when erythropoiesis is stimulated by hemolysis or ineffective erythropoiesis. Measurements of sTfR are very helpful to investigate the pathophysiology of anemia, quantitatively evaluating the absolute rate of erythropoiesis and the adequacy of marrow proliferative capacity for any given degree of anemia, and to monitor the erythropoietic response to various forms of therapy, in particular allowing to predict response early when changes in hemoglobin are not yet apparent. Iron status also influences sTfR levels, which are considerably elevated in iron deficiency anemia but remain normal in the anemia of inflammation, and thus may be of considerable help in the differential diagnosis of microcytic anemia. This is particularly useful to identify concomitant iron deficiency in a patient with inflammation because ferritin values are then generally normal. Elevated sTfR levels are also the characteristic feature of functional iron deficiency, a situation defined by tissue iron deficiency despite adequate iron stores. The sTfR/ferritin ratio can thus describe iron availability over a wide range of iron stores. With the exception of chronic lymphocytic leukemia (CLL) and high-grade non-Hodgkin's lymphoma and possibly hepatocellular carcinoma, sTfR levels are not increased in patients with malignancies. We conclude that soluble TfR represents a valuable quantitative assay of marrow erythropoietic activity as well as a marker of tissue iron deficiency. [less ▲]

Detailed reference viewed: 252 (0 ULiège)
Full Text
Peer Reviewed
See detailToxicomanes: sevrage ultrarapide aux opiacés sous anesthésie générale au CHU de Liège
Pinto, Emmanuel ULiege; Reggers, Jean ULiege; Fuchs, S. et al

in Agenda Psychiatrie (L') (2003), 28

Detailed reference viewed: 361 (29 ULiège)
Full Text
Peer Reviewed
See detailEnfin "Tubambe" devoile son identite! Hadraphe ethiopica (Bethune-Baker) (Limacodidae), une chenille comestible des forets claires zambeziennes.
Malaisse, François ULiege; Demesmaecker, Anne; Matera, Joseph et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2003), 7(2), 67-77

La consommation humaine de chenilles de Limacodidae avait été signalée en Afrique centro-australe. L’une de ces espèces, Hadraphe ethiopica, a été déterminée. Des données relatives à sa biologie ont été ... [more ▼]

La consommation humaine de chenilles de Limacodidae avait été signalée en Afrique centro-australe. L’une de ces espèces, Hadraphe ethiopica, a été déterminée. Des données relatives à sa biologie ont été rassemblées. Des analyses d’échantillons séchés ont permis de préciser leur composition chimique et leur valeur nutritionnelle, notamment sur le plan des acides aminés et des acides gras. [less ▲]

Detailed reference viewed: 64 (9 ULiège)
Full Text
Peer Reviewed
See detailImproved rank-based dependence measures for categorical data
Vandenhende, François; Lambert, Philippe ULiege

in Statistics & Probability Letters (2003), 63

We extend rank-based dependence measures like Spearman's rho to categorical data so that the same ±1 limits are always reached under complete dependence. A goodness-of-fit procedure is derived for ... [more ▼]

We extend rank-based dependence measures like Spearman's rho to categorical data so that the same ±1 limits are always reached under complete dependence. A goodness-of-fit procedure is derived for dependence models using copulas. [less ▲]

Detailed reference viewed: 25 (2 ULiège)
Full Text
Peer Reviewed
See detailLa possible modification de la procédure de révision de la Constitution belge
Behrendt, Christian ULiege

in Revue Française de Droit Constitutionnel (2003)

The article examines the question whether it is appropriate to alter the current amendment procedure of the Belgian constitution. Furthermore, the articles enquires into the possible design of a new ... [more ▼]

The article examines the question whether it is appropriate to alter the current amendment procedure of the Belgian constitution. Furthermore, the articles enquires into the possible design of a new amendment procedure. [less ▲]

Detailed reference viewed: 173 (18 ULiège)
Full Text
Peer Reviewed
See detailHigh-Performance Liquid Chromatography Analyses Of Pyoverdin Siderophores Differentiate Among Phytopathogenic Fluorescent Pseudomonas Species
Bultreys, Alain; Gheysen, Isabelle; Wathelet, Bernard ULiege et al

in Applied and Environmental Microbiology (2003), 69(2),

Detailed reference viewed: 27 (0 ULiège)
Full Text
Peer Reviewed
See detailDéveloppement de modèles prédictifs des proportions de duramen et d'écorce des espèces de mélèze cultivées en zones de basse altitude en Europe de l'Ouest (Larix kaempferi (Lambert) Carr., Larix decidua Miller et Larix eurolepis Henry).
Pauwels, D.; Lejeune, Philippe ULiege; Paques, L. E. et al

in Annals of Forest Science : a Multidisciplinary and International Journal (2003), 60(3), 227-235

Predictive models for heartwood and bark proportions have been developed for Japanese larch (Larix kaempferi (Lambert) Carr.) planted in South of Belgium. These models have been tested to evaluate the way ... [more ▼]

Predictive models for heartwood and bark proportions have been developed for Japanese larch (Larix kaempferi (Lambert) Carr.) planted in South of Belgium. These models have been tested to evaluate the way of applying them to European larch (Larix decidua Miller) and hybrid larch (Larix eurolepis Henry) growing in west-European lowlands. For the heartwood proportion, independent variables selected are stand age and dbh. The model set up for Japanese larch has a R-square of 0.859. In average, European larch has lower heartwood proportion. With reference to bark proportion, selected independent variable is dbh. Residual variability is far more important for bark models (R-square of 0.456). European larch has, in average, higher bark proportion whereas hybrid larch has lower. An example of the application of these models in connection with a growth model is presented. It consists in an evaluation of the impact of dynamic silviculture on heartwood and bark proportion. [less ▲]

Detailed reference viewed: 82 (12 ULiège)
Full Text
Peer Reviewed
See detailEvaluation of thyroid function in obese dogs and in dogs undergoing a weight loss protocol
Daminet, Sylvie; Jeusette, Isabelle; Duchateau, L. et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (2003), 50(4), 213-218

Obesity and weight loss have been shown to alter thyroid hormone homeostasis in humans. In dogs, obesity is the most common nutritional problem encountered and weight loss is the cornerstone of its ... [more ▼]

Obesity and weight loss have been shown to alter thyroid hormone homeostasis in humans. In dogs, obesity is the most common nutritional problem encountered and weight loss is the cornerstone of its treatment. Therefore, it is important to clarify how obesity and weight loss can affect thyroid function test results in that species. The objectives of this study were to compare thyroid function in obese dogs and in lean dogs and to explore the effects of caloric restriction and weight loss on thyroid hormone serum concentrations in obese dogs. In the first experiment, 12 healthy lean beagles and 12 obese beagles were compared. Thyroid function was evaluated by measuring serum concentrations of total thyroxine (TT4), free thyroxine (FT4), total triiodothyronine (TT3), thyrotropin (TSH), and reverse triiodothyronine (rT3) as well as a TSH stimulation test using 75 mu g IV of recombinant human TSH. In the second experiment, eight obese beagles were fed an energy-restricted diet [average 63% maintenance energy requirement (MER)] until optimal weight was obtained. Blood samples for determination of TT4, FT4, TT3, TSH and rT3, were taken at the start and then weekly during weight loss. Only TT3 and TT4 serum concentrations were significantly higher in obese dogs as compared to lean dogs. In the second experiment, weight loss resulted in a significant decrease in TT3 and TSH serum concentrations. Thus obesity and energy restriction significantly alter thyroid homeostasis in dogs, but the observed changes are unlikely to affect interpretation of thyroid function test results in clinics. [less ▲]

Detailed reference viewed: 59 (6 ULiège)
Full Text
Peer Reviewed
See detailIdentification of heterologous multicopy suppressors of the yeast msb3msb4 double mutation
Delroisse, Jean-Marc; Breban, Martine; Burny, Arsène et al

in Yeast (2003), 20(S291),

Detailed reference viewed: 8 (5 ULiège)
Full Text
See detailMéthodologie des plans de gestion piscicole en Région wallonne, application au bassin de la Semois
Conjaerts, C.; Hauptmann, Y.; Waltzing, D. et al

in Pêcheur Belge (Le) (2003), (8), 22-25

Detailed reference viewed: 34 (4 ULiège)
Full Text
See detailLe délai de prescription de l'action civile résultant d'une infraction : fin d'une controverse
Monville, Pierre ULiege

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2003)

Detailed reference viewed: 1146 (6 ULiège)
Full Text
Peer Reviewed
See detailExpression in an msb3msb4 yeast mutant of 2 human homologues of the yeast MSB3 MSB4 genes: RN-tre and Tre2 oncogene
Bizimungu, Christelle; Burny, Arsène; De Nève, Nancy et al

in Archives Internationales de Physiologie et de Biochimie (2003), 184

Detailed reference viewed: 5 (1 ULiège)
Full Text
Peer Reviewed
See detailLa transplantation d'ilots de Langerhans ou de cellules B: un pas vers la guerison du diabete?
Philips, Jean-Christophe ULiege; Radermecker, Régis ULiege; Scheen, André ULiege

in Revue Médicale de Liège (2003), 58(2), 83-7

Diabetes mellitus places an enormous burden on patients, their relatives and the society. Current therapies do not provide sufficiently tight control of blood glucose to avoid diabetic complications. Some ... [more ▼]

Diabetes mellitus places an enormous burden on patients, their relatives and the society. Current therapies do not provide sufficiently tight control of blood glucose to avoid diabetic complications. Some recent developments try to restore normal glucose homeostasis. Research is islet and stem cell transplantation is developing rapidly and this article summarizes the new approaches that could cure and not simply treat diabetes in the future. [less ▲]

Detailed reference viewed: 85 (2 ULiège)
Full Text
Peer Reviewed
See detailHorizontal And Vertical Co2 Advection In A Sloping Forest
Aubinet, Marc ULiege; Heinesch, Bernard ULiege; Yernaux, Michel ULiege

in Boundary-Layer Meteorology (2003), 108(3),

Detailed reference viewed: 27 (3 ULiège)
Full Text
Peer Reviewed
See detailPhysical and textural characteristics of hydrogenated low-erucic acid rapeseed oil and low-erucic acid rapeseed oil blends
Danthine, Sabine ULiege; Deroanne, Claude ULiege

in Journal of the American Oil Chemists' Society (2003), 80(2), 109-114

Low-erucic acid rapeseed oil (LERO) and hydrogenated low-erucic acid rapeseed oil (HLERO) were blended in binary systems. The blends were then studied for their physical properties such as solid fat ... [more ▼]

Low-erucic acid rapeseed oil (LERO) and hydrogenated low-erucic acid rapeseed oil (HLERO) were blended in binary systems. The blends were then studied for their physical properties such as solid fat content, melting curves by DSC, textural properties, and polymorphism. Phase behavior diagrams were constructed from the DSC and X-ray results, and isosolid diagrams were constructed from the NMR results. The mixture of HLERO and LERO displayed a monotectic behavior for all the storage time at 15degreesC. The aim of this work was to evaluate physical characteristics of binary blends of HLERO and nonhydrogenated LERO in order to use only LERO and hardened LERO in bakery shortenings. The mixture of 60% HLERO and 40% LERO is suitable to use as a plastic shortening, This blend is beta tending upon storage at 15degreesC. It could be used in pie crust applications. [less ▲]

Detailed reference viewed: 33 (10 ULiège)
Full Text
Peer Reviewed
See detailLe cancer medullaire de la thyroide ou, comment des marqueurs tumoraux et les outils de la genetique autorisent le deploiement de mesures preventives.
Meurisse, Nicolas ULiege; Defechereux, Thierry ULiege; Hamoir, Etienne ULiege et al

in Revue Médicale de Liège (2003), 58(5), 346-350

Medullary thyroid cancer (MTC) arises from parafollicular C cells secreting calcitonin. MTC occurs both as sporadic tumors and as part of specific inherited autosomal dominant syndromes in which point ... [more ▼]

Medullary thyroid cancer (MTC) arises from parafollicular C cells secreting calcitonin. MTC occurs both as sporadic tumors and as part of specific inherited autosomal dominant syndromes in which point mutations within a discrete set of RET codons were described. Total thyroidectomy and aggressive neck dissection represents the only chance for cure in the affected patients. Therefore, all patients with thyroid nodular disease should undergo measurement of calcitonin plasma levels to allow preclinical diagnosis of the disease and early appropriate surgery ("secondary prevention"). In case of proband patient for inherited disease, all the family members should be genetically screened to detect the disease gene carriers. Patients with germline mutation would benefit either from earlier surgery at the stage of C-cell hyperplasia or microcarcinoma or prophylactic surgery (total thyroidectomy without neck dissection) (primary prevention) before the onset of any C-cells pathology. The ideal age for performance of such prophylactic surgery is determined by the genotypic features of the disease. [less ▲]

Detailed reference viewed: 220 (7 ULiège)
Full Text
See detailLa Zone Villageoise de Chasse de Sia (Ranch de Gibier de Nazinga, Burkina Faso)
Vermeulen, Cédric ULiege; Ouédraogo, M.

in Parcs & Réserves (2003), 58(2), 32-44

Detailed reference viewed: 111 (8 ULiège)
Full Text
Peer Reviewed
See detailGas chromatography-olfactometry analysis of the volatile compounds of two commercial Irish beef meats
Machiels, D.; van Ruth, S. M.; Posthumus, M. A. et al

in Talanta (2003), 60(4), 755-764

The volatile flavour compounds of two commercial Irish beef meats (labelled as conventional and organic) were evaluated by gas chromatography-olfactometry and were identified by gas chromatography-mass ... [more ▼]

The volatile flavour compounds of two commercial Irish beef meats (labelled as conventional and organic) were evaluated by gas chromatography-olfactometry and were identified by gas chromatography-mass spectrometry. The volatile compounds were isolated in a model mouth system. Gas chromatography-olfactometry was performed by a group of eight assessors using the detection frequency methodology. The odours of the detected compounds were described as well. Eighty-one volatile compounds were identified, 11 compounds of which possessed odour activity in the first beef sample and 14 of which in the second meat sample. Ten volatile flavour compounds were common to both: methanethiol, dimethyl sulphide, 2-butanone, ethyl acetate, 2- and 3-methylbutanal, an unknown compound, 2-octanone, decanal and benzothiazole. Two unknown compounds were only detected in the first sample while 2,3-pentanedione, 4-methyl-3-penten-2-one, 2-heptanone, dimethyl trisulphide and nonanal were only perceived in the second beef. Significant differences in terms of detection frequency, odour characteristics and in nature of the volatile flavour compounds were emphasised between the two samples. (C) 2003 Elsevier Science B.V. All rights reserved. [less ▲]

Detailed reference viewed: 58 (0 ULiège)
Full Text
Peer Reviewed
See detailEffets du protocole GPG sur l’activité ovarienne
Hanzen, Christian ULiege; Boudry, B.; Drion, Pierre ULiege

in Point Vétérinaire (2003), 34(237), 26-30

The GPG protocol or OvSynch includes an injection of GnRH and followed seven days later by an injection of PgF(2alpha), which is preceded forty-eight hours earlier by a second injection of GnRH. The ... [more ▼]

The GPG protocol or OvSynch includes an injection of GnRH and followed seven days later by an injection of PgF(2alpha), which is preceded forty-eight hours earlier by a second injection of GnRH. The effects of GnRH on follicular tissue are either ovulation or luteinization depending at which stage of the cycle the cow is injected i.e. metoestrus, dioestrus or end of dioestrus. Observation of one or the other effect suggests a close association between the stage of follicular development, the function of the follicular tissue present and also the concentration of progesterone. [less ▲]

Detailed reference viewed: 84 (15 ULiège)
Full Text
Peer Reviewed
See detailThe activation of birdsong by testosterone - Multiple sites of action and role of ascending catecholamine projections
Ball, G. F.; Castelino, C. B.; Maney, D. L. et al

in Annals of the New York Academy of Sciences (2003), 1007

Birdsong is a species-typical stereotypic vocalization produced in the context of reproduction and aggression. Among temperate-zone songbirds, it is produced primarily by males, and its frequency and ... [more ▼]

Birdsong is a species-typical stereotypic vocalization produced in the context of reproduction and aggression. Among temperate-zone songbirds, it is produced primarily by males, and its frequency and quality are enhanced by the presence of the gonadal steroid hormone testosterone in the plasma. In the brain, the effects of testosterone on song behavior involve both estrogenic and androgenic metabolites of testosterone that are locally produced and act via their cognate receptors. Androgen, and in some cases estrogen, receptors are present in many specialized forebrain song control nuclei. Testosterone can regulate catecholamine steady-state levels and turnover in these song control regions. Tracing studies combined with immunocytochemistry for tyrosine hydroxylase (a marker of catecholamine synthesis) reveal several catecholamine cell groups that project to forebrain song control nuclei. These brain areas also express the mRNA for either androgen receptors or estrogen receptor alpha, and androgens enhance the expression of tyrosine hydroxylase. Dopaminergic cell groups that project to song nuclei express the protein product of the immediate early gene fos in association with the production of territorial song. Thus, testosterone may be acting on song behavior via these ascending catecholamine cell groups. Chemical lesioning studies suggest that noradrenergic projections to the song system are involved in the latency to produce song and the ability to discriminate conspecific from heterospecific song. The song control circuit may thus be modulated in significant ways via the androgen regulation of forebrain catecholamine systems. [less ▲]

Detailed reference viewed: 38 (1 ULiège)
Full Text
Peer Reviewed
See detailModèle de croissance pour les plantations de mélèzes.
Pauwels, D.; Lejeune, Philippe ULiege; Rondeux, Jacques ULiege

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2003), 7(2), 87-97

A distance independent tree growth model has been determined for pure and even-aged larch stands (Larix sp.) growing in Walloon Region (South Belgium). This model has been built from 2578 larches ... [more ▼]

A distance independent tree growth model has been determined for pure and even-aged larch stands (Larix sp.) growing in Walloon Region (South Belgium). This model has been built from 2578 larches (Japanese, European and Hybrid larches) in 99 stands. It enables to predict tree circumference increment from circumference, dominant height, basal area, age and site index of stands. Estimating increments of 1283 larches in 48 stands has been used to validate the model that gives unbiased estimates of the increments (mean error = -0.002 cm with standard deviation of 0.60 cm). The mean absolute error of estimates is 0.46 cm.year-1. The model has also been tested to predict the increment of larches in French experimental plots having very different silvicultural treatments. The residues of these estimations depend on the stand basal area: the lesser the stand basal area, the higher the residues of the estimation. A correction factor, linked to basal area through a Bailey and Clutter curve, has been introduced to extend the validity of the model to stands with a basal area lower than 12 m2.ha-1. This factor does not affect the increment estimations if the stand characteristics are close to mean value of the sample used to build the model (correction factor close to 1). The introduction in the model of competition indexes distance dependant or site qualitative variables does not significantly improve the growth model. [less ▲]

Detailed reference viewed: 135 (16 ULiège)
Full Text
Peer Reviewed
See detailDeciphering the impaired cytokine cascades in chronic leg ulcers (review).
Quatresooz, Pascale ULiege; Henry, Frédérique ULiege; Paquet, Philippe ULiege et al

in International Journal of Molecular Medicine (2003), 11(4), 411-8

Chronic leg ulcers are typically wounds that do not heal at a normal rate. Impaired healing appears to be due to primary microvascular changes and it is aggravated by ongoing bacteria-driven vasculitis ... [more ▼]

Chronic leg ulcers are typically wounds that do not heal at a normal rate. Impaired healing appears to be due to primary microvascular changes and it is aggravated by ongoing bacteria-driven vasculitis. The various cytokines identified in experimental wounds are also present in leg ulcers. VEGF is strongly implicated as a promoter of blood vessel growth in patients with venous disease. In addition, there is good evidence of increased expression of bFGF, TGF-beta1, and PDGF in lipodermatosclerosis. All of these growth factors are involved in wound healing. Upregulated TGF-beta1 is probably one of the main causes of the fibrosis observed in lipodermatosclerosis. In leg ulcers, cytokines appear to be trapped in the perivascular fibrinoid deposits. It is not the nature and amount of cytokines that are inadequate in leg ulcers, but rather their spatial distribution. Dermal dendrocytes (DD) are resident factor XIIIa-enriched macrophages. They likely play a role in tissue repair when boosted adequately. New therapies aiming at helping the release of cytokines by DD apparently promote and improve the healing phase. [less ▲]

Detailed reference viewed: 33 (2 ULiège)
Full Text
Peer Reviewed
See detailDust-acoustic modes in plasmas with dust distributions and charge fluctuations
Verheest, F.; Jacobs, G.; Cattaert, Tom ULiege

in New Journal of Physics (2003), 5

Charge fluctuations in dusty plasmas are discussed starting from charge, mass, momentum and current equations for the combined dusty plasma. This allows a generic description of low-frequency waves in ... [more ▼]

Charge fluctuations in dusty plasmas are discussed starting from charge, mass, momentum and current equations for the combined dusty plasma. This allows a generic description of low-frequency waves in plasmas with dust distributions, and leads to the damping and other modifications of the dust-acoustic and related modes, like generalized dust-Coulomb modes. [less ▲]

Detailed reference viewed: 28 (2 ULiège)
Full Text
See detailLe mandat d'arrêt européen : remise en cause du mécanisme de simple remise.
Monville, Pierre ULiege

in Journal des Tribunaux Droit Européen (2003)

Detailed reference viewed: 58 (1 ULiège)
Full Text
Peer Reviewed
See detailLe cas clinique du mois. Masse médiastinale antérieure chez une patiente acromégale.
Laret, Vinciane ULiege; Valdes Socin, Hernan Gonzalo ULiege; Betea, Daniela ULiege et al

in Revue Médicale de Liège (2003), 58(12), 724-728

The discovery of an anterior asymptomatic mediastinal mass with acromegaly creates a dilemma for the clinician. As acromegaly can be due to a pituitary tumor but also to an ectopic production of GHRH, the ... [more ▼]

The discovery of an anterior asymptomatic mediastinal mass with acromegaly creates a dilemma for the clinician. As acromegaly can be due to a pituitary tumor but also to an ectopic production of GHRH, the first diagnostic step consists of finding the etiology of the disease in order to use adequate treatment. This can be complicated by the fact that acromegaly can be associated with other tumors (for instance in MEN-1 disease and Carney Complex) and because chronic GH hypersecretion can stimulate tumor overgrowth and perhaps tumor formation. We describe the case of a 44-year-old acromegalic woman with an anterior mediastinal mass. We present the different diagnoses and a review of the literature. [less ▲]

Detailed reference viewed: 174 (6 ULiège)
Full Text
Peer Reviewed
See detailLe Gigantisme : Un mystère élucidé
Beckers, Albert ULiege

in Revue Roumaine d'Endocrinologie (2003), 2(4), 88-9394-97

Detailed reference viewed: 9 (0 ULiège)
Full Text
Peer Reviewed
See detailThe emotional content of material and reality monitoring function in subjects predisposed towards hallucinations
Laroi, Frank ULiege; Marczewski, P.; Van der Linden, Martial ULiege et al

in Brain and Cognition (2003), 51

Detailed reference viewed: 26 (0 ULiège)
Full Text
Peer Reviewed
See detailThe family systems approach to treating families of persons with brain injury: a potential collaboration between family therapist and brain injury professional
Laroi, Frank ULiege

in Brain Injury (2003), 17

Although brain injury may have a great impact on the family as a whole, family reactions are not adequately addressed in rehabilitative programmes. When they are, treatment tends to be approached from a ... [more ▼]

Although brain injury may have a great impact on the family as a whole, family reactions are not adequately addressed in rehabilitative programmes. When they are, treatment tends to be approached from a family education and support perspective and not from a family therapy perspective. The aim of the following paper is to illustrate the important role that a family systems approach can play in treating families of individuals with brain injury. In particular, clinical examples taken from the literature will be presented that illustrate how family roles can be modified as a consequence of a brain injury, and the importance of re-establishing or re-distributing these roles. It will be argued that an intimate collaboration between family therapist and brain injury professional is essential, and that the ideal professional make-up of clinicians working with families of persons with brain injury are those well-versed in both brain injury rehabilitation and family therapy. [less ▲]

Detailed reference viewed: 49 (1 ULiège)
Full Text
Peer Reviewed
See detailDiagnosis and monitoring of pregnancy in sheep: reality and perspectives
El Amiri, Bouchra; Karen, Aly; Cognié, Yves et al

in Productions Animales (2003), 16(2), 79-90

The present review aims at presenting different methods for pregnancy diagnosis. Since these methods are to be used in the herds, precocity, sensitivity, specificity, accuracy to predict pregnant and non ... [more ▼]

The present review aims at presenting different methods for pregnancy diagnosis. Since these methods are to be used in the herds, precocity, sensitivity, specificity, accuracy to predict pregnant and non-pregnant ewes, and the possibility to determine fetal numbers are carefully analysed. The progesterone assay is accurate as early as day 17th after fecundation; but the fertilization day must be precisely known. The pregnancy specific or associated glycoproteins (PSPB/PAG) assay is highly sensitive and specific at day 22 in blood and at day 32 in milk samples. However, this assay does not allow to predict the fetal number. The ultrasonography B-mode used on 30 days of gestation gives very good or excellent performance in terms of sensitivity and specificity depending on the practitioner. The method is also able to predict the real time fetal number. [less ▲]

Detailed reference viewed: 177 (0 ULiège)
Full Text
Peer Reviewed
See detailPopulation Genetic Structure Of Wild Phaseolus Lunatus (Fabaceae), With Special Reference To Population Sizes
Zoro Bi, I.; Maquet, A.; Baudoin, Jean-Pierre ULiege

in American Journal of Botany (2003), 90(6), 897-904

Detailed reference viewed: 35 (1 ULiège)
Full Text
Peer Reviewed
See detailLe japonisme en Belgique. L’affiche Art nouveau et l’estampe ukiyo-e
Bawin, Julie ULiege

in Bulletin de la Classe des Beaux-Arts (2003), XIV

Detailed reference viewed: 138 (11 ULiège)
Full Text
Peer Reviewed
See detailAllons-nous mourir bronzés ou ostéomalaciques? Le dilemme de la protection solaire entre Charybde et Scylla
Uhoda, I.; Crestey, M.; Pierard, Claudine ULiege et al

in Revue Médicale de Liège (2003), 58(5), 307-9

Sun is at the origin of life. It can also be responsible for death. In the past decades cutaneous melanoma killed more and more young adults. Currently, the disease still progresses in the population, but ... [more ▼]

Sun is at the origin of life. It can also be responsible for death. In the past decades cutaneous melanoma killed more and more young adults. Currently, the disease still progresses in the population, but survival increases hopefully. Sun is pointed out as the main culprit. Hence, protection against harmful effects of ultraviolets is mandatory. However, preventive measures to be taken generate heated scientific argument. Sunlight exposure particularly in moderation is indeed necessary for health through vitamin D3 synthesis and psychological effects on wellbeing. Vitamin D3 provides numerous biological effects, particularly on bone calcification and also by inhibiting proliferation and migration of malignant cells including melanoma cells. Hence, we are facing the dilemma between too much and too little ultraviolet light exposure. Anyway, one cannot advocate that people lie in the sun until they burn or until they turn a rich brown complexion. [less ▲]

Detailed reference viewed: 106 (0 ULiège)
Full Text
Peer Reviewed
See detailRegulation of neural markers nestin and GFAP expression by cultivated bone marrow stromal cells.
Wislet-Gendebien, Sabine ULiege; Leprince, Pierre ULiege; Moonen, Gustave ULiege et al

in Journal of Cell Science (2003), 116(Pt 16), 3295-302

Bone marrow stromal cells can differentiate into many types of mesenchymal cells, i.e. osteocyte, chondrocyte and adipocyte, but can also differentiate into non-mesenchymal cells, i.e. neural cells under ... [more ▼]

Bone marrow stromal cells can differentiate into many types of mesenchymal cells, i.e. osteocyte, chondrocyte and adipocyte, but can also differentiate into non-mesenchymal cells, i.e. neural cells under appropriate in vivo experimental conditions (Kopen et al., 1999; Brazelton et al., 2000; Mezey et al., 2000). This neural phenotypic plasticity allows us to consider the utilization of mesenchymal stem cells as cellular material in regenerative medicine. In this study, we demonstrate that cultured adult rat stromal cells can express nestin, an intermediate filament protein predominantly expressed by neural stem cells. Two factors contribute to the regulation of nestin expression by rat stromal cells: serum in the culture medium inhibits nestin expression and a threshold number of passages must be reached below which nestin expression does not occur. Only nestin-positive rat stromal cells are able to form spheres when they are placed in the culture conditions used for neural stem cells. Likewise, only nestin-positive stromal cells are able to differentiate into GFAP (glial fibrillary acidic protein)-positive cells when they are co-cultivated with neural stem cells. We thus demonstrated that adult rat stromal cells in culture express nestin in absence of serum after passaging the cells at least ten times, and we suggest that nestin expression by these cells might be a prerequisite for the acquisition of the capacity to progress towards the neural lineage. [less ▲]

Detailed reference viewed: 121 (5 ULiège)
Full Text
Peer Reviewed
See detailPerfluorocarbons and Haemoglobin Solutions: Will They Ever Reach Clinical Practice?
Lamy, Maurice ULiege; Deby-Dupont, G.

in Acta Anaesthesiologica Belgica (2003), 54(4), 299-300

Detailed reference viewed: 38 (4 ULiège)
Full Text
Peer Reviewed
See detailRevisiting The Ramachandran Plot: Hard-Sphere Repulsion, Electrostatics, And H-Bonding In The Alpha-Helix
Ho, Bk.; Thomas, Annick ULiege; Brasseur, Robert ULiege

in Protein Science : A Publication of the Protein Society (2003), 12(11), 2508-22

What determines the shape of the allowed regions in the Ramachandran plot? Although Ramachandran explained these regions in terms of 1-4 hard-sphere repulsions, there are discrepancies with the data where ... [more ▼]

What determines the shape of the allowed regions in the Ramachandran plot? Although Ramachandran explained these regions in terms of 1-4 hard-sphere repulsions, there are discrepancies with the data where, in particular, the alphaR, alphaL, and beta-strand regions are diagonal. The alphaR-region also varies along the alpha-helix where it is constrained at the center and the amino terminus but diffuse at the carboxyl terminus. By analyzing a high-resolution database of protein structures, we find that certain 1-4 hard-sphere repulsions in the standard steric map of Ramachandran do not affect the statistical distributions. By ignoring these steric clashes (NH(i+1) and O(i-1)C), we identify a revised set of steric clashes (CbetaO, O(i-1)N(i+1), CbetaN(i+1), O(i-1)Cbeta, and O(i-1)O) that produce a better match with the data. We also find that the strictly forbidden region in the Ramachandran plot is excluded by multiple steric clashes, whereas the outlier region is excluded by only one significant steric clash. However, steric clashes alone do not account for the diagonal regions. Using electrostatics to analyze the conformational dependence of specific interatomic interactions, we find that the diagonal shape of the alphaR and alphaL-regions also depends on the optimization of the NH(i+1) and O(i-1)C interactions, and the diagonal beta-strand region is due to the alignment of the CO and NH dipoles. Finally, we reproduce the variation of the Ramachandran plot along the alpha-helix in a simple model that uses only H-bonding constraints. This allows us to rationalize the difference between the amino terminus and the carboxyl terminus of the alpha-helix in terms of backbone entropy. [less ▲]

Detailed reference viewed: 26 (0 ULiège)
Full Text
Peer Reviewed
See detailPrevention du diabete de type 2: style de vie ou medicaments?
Scheen, André ULiege; Letiexhe, Michel ULiege; Ernest, Philippe ULiege

in Revue Médicale de Liège (2003), 58(4), 206-10

The World Health Organisation strongly recommends strategies for the prevention of type 2 diabetes, knowing the epidemics of the disease and its strong association with that of obesity. Several ... [more ▼]

The World Health Organisation strongly recommends strategies for the prevention of type 2 diabetes, knowing the epidemics of the disease and its strong association with that of obesity. Several intervention studies, in China ("Da-Qing Study"), in Europe ("Malmo study", "Finnish Diabetes Prevention Study") and in the United States ("Diabetes Prevention Program"), showed that lifestyle change are able to reduce by around 50% the incidence of type 2 diabetes in at risk individuals. Various pharmacological approaches have also proven their efficacy in preventing type 2 diabetes, but in most cases with less impressive reductions, between 25% and 35%. It is the case for metformin, acarbose, orlistat or various inhibitors of the renin-angiotensin system. After the report of promising results with troglitazone, large prospective studies are ongoing to test the efficacy of rosiglitazone and pioglitazone in such an indication, two insulinsensitizers of the thiazolidinedione family. We will briefly described the main results of intervention studies to prevent type 2 diabetes in at risk subjects, because of the presence of obesity, impaired glucose tolerance and/or arterial hypertension. [less ▲]

Detailed reference viewed: 738 (5 ULiège)
Full Text
Peer Reviewed
See detailExpression in an msb3msb4 yeast mutant of 2 human homologues of the yeast MSB3 MSB4 genes: RN-tre and Tre2 oncogene
Bizimungu, Christelle; Burny, Arsène; Portetelle, Daniel ULiege et al

in Yeast (Chichester, England) (2003), 20(S1),

Detailed reference viewed: 8 (2 ULiège)
Full Text
Peer Reviewed
See detailHistometric assessment of psoriatic plaques treated by vitamin D3 derivatives.
Uhoda, Isabelle; Quatresooz, Pascale ULiege; Hermanns-Lê, Trinh ULiege et al

in Dermatology : International Journal for Clinical & Investigative Dermatology (2003), 206(4), 366-9

BACKGROUND: Psoriasis is an immunogenetic disorder. Factor XIIIa+ dermal dendrocytes (DD) are part of the pathobiological changes in the plaque type of the disease. OBJECTIVE: The present study aimed at ... [more ▼]

BACKGROUND: Psoriasis is an immunogenetic disorder. Factor XIIIa+ dermal dendrocytes (DD) are part of the pathobiological changes in the plaque type of the disease. OBJECTIVE: The present study aimed at comparing the effect of 3 vitamin D(3) derivatives on the epidermis, microvasculature and DD in psoriasis. METHOD: Twenty men suffering from chronic plaques of psoriasis on the trunk were enrolled in this study. They applied twice a day for 3 weeks calcipotriol, tacalcitol and calcitriol, each to one plaque. Another similar lesion received petrolatum as a placebo treatment. Skin biopsies were taken at entry and at completion of the 3-week treatment phase. Immunohistochemistry was performed using the lectin of Ulex europaeus and an antibody to factor XIIIa. Computerized image analysis served to measure the stratum Malpighii area, the microvasculature area and the DD numerical density in the papillary dermis. RESULTS: At entry in the study, the 4 test sites were indistinguishable with regard to the stratum Malpighii area, the papillary microvasculature area and the papillary DD density. The 3 histometric parameters appeared correlated with each other. At completion of the 3-week treatment phase, the 3 vitamin D derivatives had decreased the size of the stratum Malpighii. In addition, calcitriol had also reduced the DD density in the papillary dermis. No other significant changes were yielded. CONCLUSION: As assessed by histometry, the psoriatic epidermis responded to a short treatment using the 3 vitamin D derivatives. The better result compared to the control site was achieved by calcitriol. DD appeared to be most controlled by the same drug. The microvasculature did not appear to be decreased at the 3-week time point in treatment. [less ▲]

Detailed reference viewed: 41 (2 ULiège)
Full Text
Peer Reviewed
See detailEmile Adan en de introductie van reisinstructies voor de Belgische wetenschappelijke exploratie in Midden-Afrika.
Vandersmissen, Jan ULiege

in Archives et Bibliothèques de Belgique = Archief en Bibliotheekwezen in Belgie (2003), 74(1-4), 205-217

Detailed reference viewed: 25 (0 ULiège)
Full Text
Peer Reviewed
See detailPara-Adrenal Adrenal Pseudocyst
Milicevic, Mladen ULiege; Dondelinger, Robert ULiege; Detry, Olivier ULiege

in JBR-BTR : Journal Belge de Radiologie - Belgisch Tijdschrift voor Radiologie (2003), 86(3, May-Jun), 166-7

Detailed reference viewed: 64 (18 ULiège)
Full Text
Peer Reviewed
See detailWithin-herd effects of age at test day and lactation stage on test-day yields
Bormann, J.; Wiggans, G. R.; Druet, Tom ULiege et al

in Journal of Dairy Science (2003), 86(11), 3765-3774

Variance ratios were estimated for random within-herd effects of age at test day and lactation stage, on test-day yield and somatic cell score to determine whether including these effects would improve ... [more ▼]

Variance ratios were estimated for random within-herd effects of age at test day and lactation stage, on test-day yield and somatic cell score to determine whether including these effects would improve the accuracy of estimation. Test-day data starting with 1990 calvings for the entire US Jersey population and Holsteins from California, Pennsylvania, Wisconsin, and Texas were analyzed. Test-day yields were adjusted for across-herd effects using solutions from a regional analysis. Estimates of the relative variance ( fraction of total variance) due to within-herd age effects were small, indicating that regional adjustments for age were adequate. The relative variances for within-herd lactation stage were large enough to indicate that accuracy of genetic evaluations could be improved by including herd stage effects in the model for milk, fat, and protein, but not for somatic cell score. Because the within-herd lactation stage effect is assumed to be random, the effect is regressed toward the regional effects for small herds, but in large herds, lactation curves become herd specific. Model comparisons demonstrated the greater explanatory power of the model with a within-herd-stage effect as prediction error standard deviations were greater for the model without this effect. The benefit of the within-herd-stage effects was confirmed in a random regression model by comparing variance components from models with and without random within-herd regressions and through log-likelihood ratio tests. [less ▲]

Detailed reference viewed: 26 (3 ULiège)
Full Text
Peer Reviewed
See detailSpinal mechanisms contribute to analgesia produced by epidural sufentanil combined with bupivacaine for postoperative analgesia
Joris, Jean ULiege; Jacob, Eric; Sessler, Daniel et al

in Anesthesia and Analgesia (2003), 97

Detailed reference viewed: 30 (4 ULiège)
Full Text
Peer Reviewed
See detailPatterns Of Bryophyte Diversity And Rarity At A Regional Scale
Vanderpoorten, Alain ULiege; Engels, Patrick ULiege

in Biodiversity & Conservation (2003), 12(3),

Detailed reference viewed: 20 (0 ULiège)
Full Text
Peer Reviewed
See detailDifferential expression of alpha1 (IV) and alpha5 (IV) collagen chains in basal-cell carcinoma.
Quatresooz, Pascale ULiege; Martalo, Oriane; Pierard, Gérald ULiege

in Journal of Cutaneous Pathology (2003), 30(9), 548-52

BACKGROUND: Basement membrane alterations are common in malignancies, and they may indicate tumoral aggressiveness. Distinct patterns of tumoral coverage by collagen IV were reported in nodular and ... [more ▼]

BACKGROUND: Basement membrane alterations are common in malignancies, and they may indicate tumoral aggressiveness. Distinct patterns of tumoral coverage by collagen IV were reported in nodular and aggressive basal-cell carcinomas (BCCs). Differential expressions of alpha (IV) collagen chains were also shown on frozen sections. The aim of our work was to document the immunohistochemical expression of alpha1, alpha3, and alpha5 (IV) collagen chains in BCC after routine fixation and processing. METHODS: The patterns of distribution of alpha1 (IV), alpha3 (IV), and alpha5 (IV) collagen chains were studied in 20 formalin-fixed and paraffin-embedded BCCs showing different infiltrative patterns. One trichoblastoma was used as control. RESULTS: In nodular BCCs, the expression of alpha5 (IV) collagen chain was downregulated and uneven. By contrast, alpha1 (IV) collagen chain expression was preserved around these tumors similar to the surrounding skin. However, the alpha1 (IV) collagen chain expression was discontinuous or absent in BCC areas showing an infiltrative pattern of extension. The alpha3 chain was absent both underneath all BCCs and non-neoplastic skin. CONCLUSIONS: The basement membrane alterations around nodular BCCs involved more precisely the alpha5 (IV) collagen chains. Defects in alpha1 (IV) collagen chain expression seemed to be associated with a tumoral invasive and infiltrative pattern. The biological significance of these findings is unclear. [less ▲]

Detailed reference viewed: 19 (5 ULiège)
Full Text
Peer Reviewed
See detailPhylogeny
Baudoin, Jean-Pierre ULiege; Maquet, A.

in Plant and Soil (2003), 252(1), 55-128

Detailed reference viewed: 86 (2 ULiège)
Full Text
Peer Reviewed
See detailZur diatopischen Gliederung des alltagssprachlichen Wortgebrauchs
Möller, Robert ULiege

in Zeitschrift für Dialektologie und Linguistik (2003), 70

Detailed reference viewed: 37 (6 ULiège)
Full Text
Peer Reviewed
See detailThe changing spectrum of TSH-secreting pituitary adenomas: diagnosis and management in 43 patients.
Valdes Socin, Hernan Gonzalo ULiege; Chanson, Philippe; Delemer, B. et al

in European Journal of Endocrinology (2003), 148(4), 433-442

OBJECTIVE: Our aim was to report the recent changes in diagnosis and management of TSH-secreting pituitary adenomas. METHODS: We retrieved 43 consecutive patients with TSH-secreting pituitary tumors (23 ... [more ▼]

OBJECTIVE: Our aim was to report the recent changes in diagnosis and management of TSH-secreting pituitary adenomas. METHODS: We retrieved 43 consecutive patients with TSH-secreting pituitary tumors (23 male and 20 female) among 4400 pituitary adenomas followed between 1976 and 2001 in six Belgian and French centers. RESULTS: TSH was elevated in 18/43 and alpha subunit in 13/32 patients. In patients with intact thyroid (n=30), mean free tri-iodothyronine was 13.1 pmol/l (range 3.5-23) and mean free thyroxine was 38.4 pmol/l (range 10.2-62.7). Hyperprolactinemia and acromegaly were associated in 9/43 and 8/43 cases. The number of associated hypersecretions was higher in macroadenomas than in microadenomas (Chi square = 11.2, P<0.01). Two women had sporadic multiple endocrine neoplasia type 1-associated syndrome. The proportion of microadenomas versus macroadenomas was 1/11 (period 1974-1986) and 8/32 (period 1987-2001). Bilateral petrosal sinus sampling, (111)In-pentreotide scintigraphy and ((11)C)-l-methionine positron emission tomography scan confirmed diagnosis in four questionable microadenomas. Macroadenomas with extrasellar extension (31 cases) had a tendency to be medially located. Medical treatment with somatostatin analogs was initiated as first-line treatment in 26 patients. TSH levels were reduced by more than 50% in 23/26 cases. A tumoral shrinkage of more than 20% was observed in 5/13 cases. Surgery was performed in 36 patients. After 1 year, 21 of them (58.3%) met the criteria of surgical favorable outcome. Pituitary radiotherapy (n=8) and somatostatin analogs allowed normalization in cases not cured by surgery. CONCLUSION: Ultrasensitive methods for TSH measurement led to an earlier recognition of TSH-secreting pituitary tumors. In this series, we observed that TSH-secreting pituitary tumors are today more frequently found at the stage of microadenomas, medially located, without associated hypersecretions and needing new exploration methods as compared with older series. This changing spectrum in the presentation of TSH-secreting pituitary tumors and the excellent response to somatostatin analogs has been accompanied by an improvement in the prognosis of the disease. [less ▲]

Detailed reference viewed: 38 (6 ULiège)
Full Text
Peer Reviewed
See detailFrom skin microrelief to wrinkles. An area ripe for investigation.
Pierard, Gérald ULiege; Uhoda, Isabelle; Pierard, Claudine ULiege

in Journal of Cosmetic Dermatology (2003), 2(1), 21-8

Skin microrelief alters progressively with age. Wrinkles do not result from these changes but are superimposed upon them. Wrinkles result from structural changes in the epidermis, dermis and hypodermis ... [more ▼]

Skin microrelief alters progressively with age. Wrinkles do not result from these changes but are superimposed upon them. Wrinkles result from structural changes in the epidermis, dermis and hypodermis. Four types of wrinkles can be recognized. Type 1 wrinkles are atrophic. Type 2 wrinkles are elastotic. Type 3 wrinkles are expressional. Type 4 wrinkles are gravitational. Each type of wrinkle is characterized by distinct microanatomical changes and each type of wrinkle develops in specific skin regions. Each is likely to respond differently to treatment. Skin microrelief and skin folds can be identified on histological examination. By contrast, only minimal dermal changes are found beneath permanent or reducible wrinkles compared with immediately adjacent skin. A series of objective and non-invasive methods is available to quantify the severity of wrinkling. [less ▲]

Detailed reference viewed: 49 (0 ULiège)
Full Text
Peer Reviewed
See detailThe hair eclipse phenomenon: sharpening the focus on the hair cycle chronobiology.
Pierard, Claudine ULiege; Petit, L.; Loussouarn, G. et al

in International Journal of Cosmetic Science (2003), 25(6), 295-9

Chronobiology governing the hair cycle is a fascinating and complex process. Both the hair growth cycle and the hair shaft growth are coordinated and depend on the interplay of different biological ... [more ▼]

Chronobiology governing the hair cycle is a fascinating and complex process. Both the hair growth cycle and the hair shaft growth are coordinated and depend on the interplay of different biological signals and various exogenous stimuli. A latency period may occur between hair shedding (teloptosis, exogen phase) and the early emergence of the next anagen VI stage. This lag time referred to on the hair eclipse phenomenon likely depends on the influence of a series of distinct synchronizers, and does not represent per se a peculiar hair cycle phase. It is the result of some dysregulations of the hair cycling, involving early teloptosis, delayed anagen I initiation or stunted hair growth at any stage between the anagen I and anagen V phases. As such, the hair eclipse phenomenon may be an erratic process occurring in physiopathological conditions affecting hair follicles singly or in focal to generalized patterns. It may be more frequent when it follows synchronized teloptosis occurring in telogen effluvium (newborn alopecia, post-partum alopecia, seasonal alopecia and alopecia areata). It may also be prominent when microinflammation is abutted on the permanent portion of the hair follicle as in dandruff, seborrhoeic dermatitis, androgenic alopecia and photoageing baldness. Local synchronizers such as growth factors and other mediators may eventually be lacking or involved in the hair eclipse phenomenon. Their identification and characterization might drive new corrective or preventive applications. [less ▲]

Detailed reference viewed: 52 (0 ULiège)
Full Text
See detailLiège-Paris 1848 : Littérature, féminisme et Révolution
Droixhe, Daniel ULiege

in Bulletin de l'Académie Royale de Langue et de Littérature Françaises (2003), LXXXI(1-2), 41-49

Detailed reference viewed: 89 (5 ULiège)
Full Text
Peer Reviewed
See detailThe Tellnes ilmenite deposit (Rogaland, South Norway): magnetic and petrofabric evidence for emplacement of a Ti-enriched noritic crystal mush in a fracture zone
Diot, Hervé; Bolle, Olivier ULiege; Lambert, Jean-Marc et al

in Journal of Structural Geology (2003), 25(4), 481-501

The Tellnes ilmenite deposit, a world class titanium deposit, occurs in the Ana-Sira anorthosite (Rogaland anorthosite province, South Norway). It is mainly made up of an ilmenite-rich norite that has ... [more ▼]

The Tellnes ilmenite deposit, a world class titanium deposit, occurs in the Ana-Sira anorthosite (Rogaland anorthosite province, South Norway). It is mainly made up of an ilmenite-rich norite that has been previously interpreted as injected in a crystal mush state, in a weakness zone of the enclosing anorthosite. This emplacement mechanism has produced a faint orientation in the ore due to the flow of the mush. The internal flow structure of the orebody is studied here using the low-field anisotropy of magnetic susceptibility (AMS) method. Partial anhysteretic remanent magnetization (pAARM) indicates that coarse magnetite is the main mineral responsible for the magnetic fabric. Parallelism of the magnetic fabric with the shape-preferred orientation of the ore-forming minerals is checked using image analysis (IA) from oriented sections (intercept method). Interpretation of the AMS data verified by pAARM and IA, provides information on the magmatic foliation and lineation. Emplacement flow of the ilmenite norite crystal mush occurred in the direction of the orebody, parallel to its walls, and with an average SE 18degrees plunge. The feeder zone was likely situated below a network of veins on the SE end of the orebody. The sickle-shaped outcrop of the deposit suggests a transcurrent, dextral opening of a WNW-ESE-striking weakness zone across the anorthosite pluton. (C) 2002 Elsevier Science Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 82 (2 ULiège)
Full Text
See detailHanging in there by a fall – The Oncocyclus of Lebanon
Saad, Layla ULiege; Khuri, Sawsan

in British Iris Society Yearbook (2003)

Detailed reference viewed: 24 (2 ULiège)
Full Text
Peer Reviewed
See detailMagneto-transport study of nb-doped Bi/Pb2223 superconductor
Pekala, Marek; Mucha, Jan ULiege; Cloots, Rudi ULiege et al

in Physica C: Superconductivity (2003), 387(1-2), 191-197

The magneto-transport properties of Bi1.5Pb0.4Nb0.1Sr2Ca2Cu3O10-x polycrystalline, superconducting ceramic are reported. The material was found to be chemically homogeneous and partially textured. The ... [more ▼]

The magneto-transport properties of Bi1.5Pb0.4Nb0.1Sr2Ca2Cu3O10-x polycrystalline, superconducting ceramic are reported. The material was found to be chemically homogeneous and partially textured. The mixed state properties were investigated by measuring the electrical resistivity, longitudinal and transverse (Nernst effect) thermoelectric power, and thermal conductivity. The magnetization and AC susceptibility measurements were also performed. The variation of these characteristics for magnetic fields up to 5 T are discussed and compared to those of the zero field case. The transport entropy and thermal Hall angle are extracted and quantitatively compared to previously reported data of closely related systems. (C) 2003 Elsevier Science B.V. All rights reserved. [less ▲]

Detailed reference viewed: 35 (5 ULiège)
Full Text
Peer Reviewed
See detailLombalgies et remise au travail : Quel modèle d'intervention privilégier ?
Mairiaux, Philippe ULiege

in Médecine du Travail & Ergonomie= Arbeidsgezondheidszorg & Ergonomie (2003), XL(4), 185-188

Detailed reference viewed: 29 (3 ULiège)
Full Text
Peer Reviewed
See detailIsolation and partial characterization of three pregnancy-associated glycoproteins from the ewe placenta
El Amiri, B.; Remy, Benoit; Melo de Sousa, Noelita ULiege et al

in Molecular Reproduction and Development (2003), 64(2), 199-206

Pregnancy-associated glycoproteins (PAGs) are synthesized in the outer epithelial layer of the placenta in artiodactyls. In this work, three novel ovine PAGs were isolated from late-pregnancy fetal ... [more ▼]

Pregnancy-associated glycoproteins (PAGs) are synthesized in the outer epithelial layer of the placenta in artiodactyls. In this work, three novel ovine PAGs were isolated from late-pregnancy fetal cotyledons and characterized biochemically. The isolation procedure included acid and ammonium sulfate precipitations and anion and cation exchange chromatographies. The isolated PAGs have different NH2-terminal amino acid sequences (RGSXLTILPLRNMRDIVY, ISRVSXLTIHPLRNIMDML, and RGSNLTIHPLRNIRD) and apparent molecular masses (55, 57, and 59 kDa). Each shows several isoforms with different pl values. The three proteins share high sequence identity with each other and with other ovine, bovine, and caprine PAGs. They have not been described previously. The ovPAG-59 sequence differs from the previously identified ovPAG-4 sequence (determined by DNA cloning and sequencing) at only one position among the 15 N-terminal residues. The newly characterized ovPAGs and the procedure used to isolate them will be helpful in producing new antisera for investigating PAG secretion in pregnant ewes. [less ▲]

Detailed reference viewed: 39 (4 ULiège)
Full Text
Peer Reviewed
See detailModulating skeletal muscle mass by postnatal, muscle-specific inactivation of the myostatin gene.
Grobet, Luc ULiege; Pirottin, Dimitri ULiege; Farnir, Frédéric ULiege et al

in Genesis (2003), 35(4), 227-38

By using a conditional gene targeting approach exploiting the cre-lox system, we show that postnatal inactivation of the myostatin gene in striated muscle is sufficient to cause a generalized muscular ... [more ▼]

By using a conditional gene targeting approach exploiting the cre-lox system, we show that postnatal inactivation of the myostatin gene in striated muscle is sufficient to cause a generalized muscular hypertrophy of the same magnitude as that observed for constitutive myostatin knockout mice. This formally demonstrates that striated muscle is the production site of functional myostatin and that this member of the TGFbeta family of growth and differentiation factors regulates muscle mass not only during early embryogenesis but throughout development. It indicates that myostatin antagonist could be used to treat muscle wasting and to promote muscle growth in man and animals. [less ▲]

Detailed reference viewed: 77 (18 ULiège)
Full Text
Peer Reviewed
See detailIdentification of heterologous multicopy suppressors of the yeast msb3msb4 double mutation
Delroisse, Jean-Marc; Breban, Martine; Burny, Arsène et al

in Archives Internationales de Physiologie et de Biochimie (2003), 184

Detailed reference viewed: 10 (2 ULiège)
Full Text
See detailCloches et plaies des pieds.
Crosset, A.; Uhoda, Emmanuelle ULiege; Pierard, Gérald ULiege

in Pharma-Sphère (2003), 78

Detailed reference viewed: 29 (0 ULiège)
Full Text
Peer Reviewed
See detailPhotorefractive ZnTe grown by traveling heater method
Verstraeten, David; Launay, Jean-Claude; Delaye, Philippe et al

in Trends in Optics and Photonics (2003), 87

Detailed reference viewed: 34 (10 ULiège)
Full Text
Peer Reviewed
See detailFronts and mesoscale variability in the southern Indian Ocean as inferred from the TOPEX/POSEIDON and ERS-2 altimetry data
Kostianoy, Andrey G.; Ginzburg, Anna I.; Lebedev, Sergey Anatolievich et al

in Oceanology (2003), 43(5, SEP-OCT), 632-642

Charts of sea level anomalies (SLA) based on the combined altimetry data from the TOPEX/POSEIDON and ERS-2 satellites, as well as the corresponding charts of the sea surface dynamic heights (constructed ... [more ▼]

Charts of sea level anomalies (SLA) based on the combined altimetry data from the TOPEX/POSEIDON and ERS-2 satellites, as well as the corresponding charts of the sea surface dynamic heights (constructed by the superposition of SLA distributions over the climatic dynamic topography) and the temperature gradients at the ocean surface on the basis of the satellite Multi-Channel Sea Surface Temperature (MCSST) data, were used to study the mesoscale variability related to the fronts in the Southern Indian Ocean (30degrees-60degrees S, 20degrees-150degrees E). An analysis of these three types of satellite information for the central weeks of each month during the period from 1997 to 1999 allowed us to distinguish zones of enhanced meandering (eddy formation) within the basin under study, as well as the contributions of individual fronts and their interaction to the regional mesoscale variability. The problems of the correlation between the intensity of mesoscale variability and peculiarities of the local bottom topography and seasonal/interannual variability of mesoscale dynamics are addressed. [less ▲]

Detailed reference viewed: 70 (9 ULiège)
Full Text
Peer Reviewed
See detailAtypical recurrent varicella in 4 patients with hemopathies.
Nikkels, Arjen ULiege; Simonart, Thierry; Kentos, Alain et al

in Journal of the American Academy of Dermatology (2003), 48(3), 442-7

Relapsing varicella may occur in children with HIV infection and more rarely in younger adults. Our aim was to report unusual clinical, histologic, and virologic aspects of 4 elderly patients with ... [more ▼]

Relapsing varicella may occur in children with HIV infection and more rarely in younger adults. Our aim was to report unusual clinical, histologic, and virologic aspects of 4 elderly patients with malignant hemopathies who had an unusual form of recurrent varicella develop. Conventional microscopy, immunohistochemistry, and in situ hybridization were applied to smears and skin biopsy specimens. The patients presented a few dozen, scattered, large, papulovesicular lesions with central crusting. No zoster-associated pain or dermatomal distribution of the lesions was noted. Conventional microscopy revealed vascular changes and epidermal alterations typical for alpha-herpes virus infection. The varicella zoster virus major viral envelope glycoproteins gE and gB, and the immediate-early varicella zoster virus IE63 protein and the corresponding genome sequence for gE were detected on Tzanck smears; they were localized in endothelial cells and keratinocytes on skin biopsy specimens. The varicella zoster virus infection in endothelial cells, the vascular involvement, and the widespread distribution of the lesions suggest that the reported eruptions are vascular rather than neural in origin. These findings invalidate the diagnosis of herpes zoster but strongly support the diagnosis of recurrent varicella in an indolent and yet unreported presentation. Furthermore, these eruptions differ from relapsing varicella in children and young adults by the age of the patients, the paucity of clinical lesions, the larger diameter of the lesions and their peculiar clinical aspect, the significantly longer time interval between primary varicella and the recurrence, the prolonged healing time of the lesions, their mild disease course, and the fact that all the lesions are in the same stage of development. [less ▲]

Detailed reference viewed: 59 (0 ULiège)
Full Text
Peer Reviewed
See detailAlcoolisme ou aldehydisme : Role de l'acetaldehyde dans les effets psychotropes de l'alcool
Quertemont, Etienne ULiege

in Alcoologie et Addictologie (2003), 25(1), 33-39

De récentes études ont suggéré que l’acétaldéhyde, premier produit du métabolisme de l’éthanol, participe aux effets psychotropes résultant de la consommation d’alcool. L’acétaldéhyde semble ... [more ▼]

De récentes études ont suggéré que l’acétaldéhyde, premier produit du métabolisme de l’éthanol, participe aux effets psychotropes résultant de la consommation d’alcool. L’acétaldéhyde semble particulièrement impliqué dans les effets renforçants de l’éthanol, ce qui suggère un rôle important pour ce métabolite dans l’abus d’alcool et l’alcoolisme. Cette mise au point passe en revue les preuves expérimentales qui tendent à démontrer le rôle de l’acétaldéhyde dans les effets psychotropes de l’alcool. Les études animales et humaines indiquent que l’acétaldéhyde exerce une action renforçante plus puissante que l’éthanol dans le cerveau. Au contraire, il semble que l’accumulation d’acétaldéhyde dans le sang périphérique provoque des effets désagréables et une aversion pour l’alcool. Les effets hédoniques de l’acétaldéhyde seraient donc déterminés par le lieu, central ou périphérique, de son accumulation principale. Toutefois, l’acétaldéhyde ne doit pas être considéré comme le seul principe actif responsable de tous les effets psychotropes de l’éthanol. Plusieurs études ont par exemple démontré que l’acétaldéhyde ne participe pas significativement aux effets subjectifs de l’éthanol. Si l’acétaldéhyde exerce effectivement un rôle dans les effets renforçants de l’éthanol, il ne doit donc pas être tenu pour responsable de tous les effets pharmacologiques de la consommation d’alcool. [less ▲]

Detailed reference viewed: 385 (6 ULiège)