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See detailL’Iynge dans le discours mythique et les procédures magiques
Pirenne-Delforge, Vinciane ULg

in Kernos : Revue Internationale et Pluridisciplinaire de Religion Grecque (1993), 6

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See detailColonne lithologique du sondage de Latour (494 m): une coupe de référence pour le Secondaire de la Gaume
Boulvain, Frédéric ULg; Monteyne, R.

in Professional paper Belgian geological survey (1993), 267

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See detailComputer Originated Polarizing Holographic Optical Element recorded in Photopolymerizable layers
Carré, Christiane; Habraken, Serge ULg; Roose, Stéphane ULg

in Optics Letters (1993), 18(9), 738-740

The photosensitive system that is used in most cases to produce holographic optical holograms is dichromated gelatin. Other materials may be used, in particular, photopolymerizable layers. In the present ... [more ▼]

The photosensitive system that is used in most cases to produce holographic optical holograms is dichromated gelatin. Other materials may be used, in particular, photopolymerizable layers. In the present investigation, we set out to use the polymer developed in the Laboratoire de Photochimie Générale in Mulhouse in order to duplicate a computer-generated hologram. Our technique is intended to generate polarizing properties. We took into account the fact that no wet chemistry processing is required; grating fringe spacings are not distorted through chemical development. [less ▲]

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See detailAmineptine and response timing in the rat
Lejeune, Helga ULg; Hermans, Isabelle ULg; Mocaer, E. et al

in Behavioural Processes (1993), 29

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See detailLa gestion de l'espace
Bock, Laurent ULg

in Bulletin des Recherches Agronomiques de Gembloux (1993), 28(2-3), 115-414

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See detailStructure of the 16 S ribosomal RNA of the thermophilic cyanobacterium Chlorogloeopsis HTF (‘Mastigocladus laminosus HTF’) strain PCC75 18, and phylogenetic analysis
Wilmotte, Annick ULg; Van Der Auwera, Gert; De Wachter, Rupert

in FEBS Letters (1993), 317

The thermophilic cyanobacterial strain, PCC7518, originally identified as ‘Mu~tigocludus hminosus HTF’ does not show branchings or heterocysts. The absence of branchings supports the later assignment to ... [more ▼]

The thermophilic cyanobacterial strain, PCC7518, originally identified as ‘Mu~tigocludus hminosus HTF’ does not show branchings or heterocysts. The absence of branchings supports the later assignment to the genus Chlorogloeopsu. The absence of heterocysts may be the result of a mutation because heterocysts were observed in the original isolate. Alternatively, contamination may have happened. To solve this problem, the 16 S rRNA sequence was determined and used to infer a secondary structure model and build distance trees. The trees showed that strain PCC7518 belongs to the cluster of heterocystous species and has most probably lost the abihty to produce heterocysts by mutation. It is only distantly related to Chlorogloeopsis fritschii PCC67 18. [less ▲]

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See detailEffects on performance and meat characteristics of a diet supplemented with fat during the finishing period of growing fattening bulls
Hollo, Véronique; Marche, Christian; Dufrasne, Isabelle ULg et al

in Animal Production (1993), 56

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See detailInfluence of body size on tibial nerve somato sensory evoked potentials in dogs
Poncelet, Luc; Michaux, Charles; Balligand, Marc ULg

in American Journal of Veterinary Research (1993)

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See detailHEXAGONAL MARANGONI CONVECTION IN A RECTANGULAR BOX WITH SLIPPERY WALLS
Dauby, Pierre ULg; Lebon, Georgy ULg; COLINET, P. et al

in Quarterly Journal Of Mechanics And Applied Mathematics (1993), 46(Part 4), 683-707

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See detailElimination des métaux lourds par précipitation biologique
Toye, Dominique ULg; Schlitz, Marc; Crine, Michel ULg

in Tribune de l'Eau (La) (1993), 565

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See detailThe Audiospinal Reaction in Parkinsonian Patients Reflects Functional Changes in Reticular Nuclei
Delwaide, Paul ULg; PEPIN, Jean-Louis ULg; Maertens De Noordhout, Alain ULg

in Annals of Neurology (1993), 33(1), 63-9

Audiospinal facilitation using the soleus H-reflex as a test was compared in 16 control subjects and 23 parkinsonian patients. In the patients, facilitation was significantly reduced during the 75 to 150 ... [more ▼]

Audiospinal facilitation using the soleus H-reflex as a test was compared in 16 control subjects and 23 parkinsonian patients. In the patients, facilitation was significantly reduced during the 75 to 150 msec after the conditioning stimulation. This reduction was seen bilaterally even in patients with a hemisyndrome. It was corrected by L-dopa but not by anticholinergic agents. Facilitation at the 75-msec delay showed an inverse linear correlation with the bradykinesia intensity (r = -0.7, p < 0.01). The results argue in favor of a reduced excitability of the nucleus reticularis pontis caudalis from which a reticulospinal tract emanates as effector of the audiospinal facilitation. This would represent another example of dysfunction of reticular nuclei in Parkinson's disease. [less ▲]

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See detailEnergy Analysis on Small to Medium Sized H-Bonded Complexes
Dive, Georges ULg; Dehareng, Dominique ULg; Ghuysen, Jean-Marie ULg

in Theoretica Chimica Acta (1993), 85(6), 409-421

Dimers (water-methanol, guanine-cytosine) as well as trimers (methanol-water-imidazole, formamide-methylformate-formamide), are studied as H-bonded complexes of increasing complexity. All the investigated ... [more ▼]

Dimers (water-methanol, guanine-cytosine) as well as trimers (methanol-water-imidazole, formamide-methylformate-formamide), are studied as H-bonded complexes of increasing complexity. All the investigated conformations have been fully optimized. In particular, it is the first time that all the intra- and intermolecular parameters of the guanine-cytosine complex are left variable. In minimal basis sets, the planar conformation has been found to be a first-order critical point. The minimal basis set MINI-1 has been adapted to provide nearly planar amides. The stability of the complexes is accounted for by four energy components of the same order: the first-order term (electrostatic + exchange), the polarization, the charge transfer and the correlation terms. In the case of the studied trimers, the energy components, apart from the electrostatic one, have been found to be nearly additive. [less ▲]

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See detailHemodynamic changes during laparoscopic cholecystectomy.
Joris, Jean ULg; Noirot, Didier P; Legrand, Marc ULg et al

in Anesthesia and Analgesia (1993), 76(5), 1067-71

Hemodynamics during laparoscopic cholecystectomy under general anesthesia (isoflurane in N2O/O2 (50%)) were investigated in 15 nonobese ASA Class I patients by using invasive hemodynamic monitoring ... [more ▼]

Hemodynamics during laparoscopic cholecystectomy under general anesthesia (isoflurane in N2O/O2 (50%)) were investigated in 15 nonobese ASA Class I patients by using invasive hemodynamic monitoring including a flow-directed pulmonary artery catheter. During surgery, intraabdominal pressure was maintained automatically at 14 mm Hg by a CO2 insufflator, and minute ventilation was controlled and adjusted to avoid hypercapnia. Hemodynamics were measured before anesthesia, after the induction of anesthesia, after tilting into 10 degrees head-up position, 5 min, 15 min, and 30 min after peritoneal insufflation, and 30 min after exsufflation. Induction of anesthesia decreased significantly mean arterial pressure and cardiac index (CI). Tilting the patient to the head-up position reduced cardiac preload and caused further reduction of CI. Peritoneal insufflation resulted in a significant increase (+/- 35%) of mean arterial pressure, a significant reduction (+/- 20%) of CI, and a significant increase of systemic (+/- 65%) and pulmonary (+/- 90%) vascular resistances. The combined effect of anesthesia, head-up tilt, and peritoneal insufflation produced a 50% decrease in CI. Administration of increasing concentrations of isoflurane, via its vasodilatory activity, may have partially blunted these hemodynamic changes. These results demonstrate that laparoscopy for cholecystectomy in head-up position results in significant hemodynamic changes in healthy patients, particularly at the induction of pneumoperitoneum. [less ▲]

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See detailEchographic Characterization of Carotid Plaques
VAN DAMME, Hendrik ULg; TROTTEUR, Geneviève ULg; Vivario, M. et al

in Acta Chirurgica Belgica (1993), 93(5), 233-8

The histology of the endarterectomy specimen was compared with the preoperative echopattern of 154 plaques. Thirty-four ultrasound images were of poor quality. The 120 adequate echographies revealed 22 ... [more ▼]

The histology of the endarterectomy specimen was compared with the preoperative echopattern of 154 plaques. Thirty-four ultrasound images were of poor quality. The 120 adequate echographies revealed 22 dense hyperechogenic homogeneous plaques, 28 soft hypoechogenic homogeneous plaques, 53 inhomogeneous plaques, and 13 mixed plaques. According to the surface, lesions were subdivided as smooth (n = 63) or irregular (n = 57). Echography recognized fibrous plaques (dense homogeneous hyperechogeneous lesions), with a specificity of 87% and a sensitivity of 56%. Recent intraplaque haemorrhage is echographically apparent as a hypoechogenic area in 88% of cases, what corresponds to a specificity of 79% and a sensitivity of 75%. Echography proved to be more accurate than angiography in determining the presence or absence of ulceration. The ability to characterize the pathology of carotid atheroma by duplex scan make the clinicopathologic correlation of carotid plaques of practical importance. [less ▲]

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See detailDe l'emploi des tests dans l'expertise psychologique
Mormont, Christian ULg

in Bulletin de Psychologie (1993), 47(415), 235-239

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See detailCompte rendu de J. HEERS, Précis d’histoire du Moyen Âge, 4e éd.
Marchandisse, Alain ULg

in Moyen Age (Le) (1993), 99

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See detailCompte-rendu de l'ouvrage de Hartmut Erbse : Thukydides-Interpretationen
Vanhaegendoren, Koen ULg

in Etudes Classiques (Namur, Belgium) (1993), 61

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See detailLes colibacilloses dans l'espèce bovine
Mainil, Jacques ULg

in Annales de Médecine Vétérinaire (1993), 137

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See detailApamin increases NMDA-induced burst-firing of rat mesencephalic dopamine neurons.
Seutin, Vincent ULg; Johnson, S. W.; North, R. A.

in Brain Research (1993), 630(1-2), 341-4

Intracellular recordings made in vitro from rat midbrain dopamine neurons showed that apamin (100 nM) did not alter the regular spontaneous firing of the neurons, but it increased the occurrence of bursts ... [more ▼]

Intracellular recordings made in vitro from rat midbrain dopamine neurons showed that apamin (100 nM) did not alter the regular spontaneous firing of the neurons, but it increased the occurrence of bursts of action potentials in N-methyl-D-aspartate. Apamin appeared to facilitate burst-firing induced by NMDA because, by blocking an outward calcium-activated potassium current, it increased the depolarizing action of NMDA. [less ▲]

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See detailLaparoscopic myolysis with the Nd:YAG laser.
NISOLLE, Michelle ULg; Smets, Mireille; Malvaux, Vincent et al

in Journal of Gynecologic Surgery (1993), 9(2), 95-9

Laparoscopic myomectomy can be carried out in cases of subserosal and intramural fibroids. Laparoscopic myolysis can be proposed as an alternative to laparoscopic myomectomy in cases of large or multiple ... [more ▼]

Laparoscopic myomectomy can be carried out in cases of subserosal and intramural fibroids. Laparoscopic myolysis can be proposed as an alternative to laparoscopic myomectomy in cases of large or multiple intramural fibroids in women aged over 40 or not desiring to bear more children but wishing to avoid a future hysterectomy. The authors report the technique and the long-term results in a series of 48 women with fibroids treated by myolysis. Because of the risk of bowel adhesions, further studies with another type of laser fiber are required. [less ▲]

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See detailTransforming growth factor ß as a neuronoglial signal during peripheral nervous sytem response to injury.
Rogister, Bernard ULg; Delrée, P.; Leprince, Pierre ULg et al

in Journal of Neuroscience Research (1993), 34

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See detailLate Famennian miospore assemblages from the Bergisch Gladbach - Paffrath Syncline, Rhenish Slate Mountains, Germany
Hartkopf-Fröder, C; Streel, Maurice ULg

in Annales de la Société Géologique de Belgique (1993), 116(2), 333-357

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See detailDRC1 expression on normal and pathological lymphoid cells.
Antoine, Nadine ULg; Heinen, Ernst ULg; Marcoty, C. et al

in Advances in Experimental Medicine and Biology (1993), 329

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See detailMonads and chaos : the vitality of Leibniz's philosophy
Bouquiaux, Laurence ULg

in Diogenes (1993)

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See detailMeasurement of the 2s2p2(4P)3s 3P2 lifetime in N II by beam-foil-laser spectroscopy
Bastin, Thierry ULg; Baudinet-Robinet, Y.; Garnir, Henri-Pierre ULg et al

in Journal Physical II (1993), 3

An accurate value for the radiative lifetime of the 2s2p2(4P)3s3P2 level in N II has been obtained using the beam-foil-laser spectroscopy method. The result (T = 0.456 ± 0.020 ns ) is shorter than the ... [more ▼]

An accurate value for the radiative lifetime of the 2s2p2(4P)3s3P2 level in N II has been obtained using the beam-foil-laser spectroscopy method. The result (T = 0.456 ± 0.020 ns ) is shorter than the beam-foil lifetime values reported previously for the 3s' 3P term. No theoretical value for the lifetime of this term is available at the present time. [less ▲]

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See detailDifferential location of nucleic acids within interchromatin granule clusters.
Thiry, Marc ULg

in European Journal of Cell Biology (1993), 62(2), 259-69

We have examined in great detail the distribution of nucleic acids within interchromatin granule clusters in different cell types by means of various immunocytochemical approaches. Using the in situ ... [more ▼]

We have examined in great detail the distribution of nucleic acids within interchromatin granule clusters in different cell types by means of various immunocytochemical approaches. Using the in situ polyadenylate nucleotidyl transferase-immunogold technique for RNA detection or anti-RNA antibodies, we decisively demonstrate the presence of appreciable amount of RNA in clusters of interchromatin granules of untreated cells. Neither the in situ terminal deoxynucleotidyl transferase-immunogold technique nor anti-DNA antibodies, nor the in situ nick-translation technique for DNA detection have revealed any DNA in the interchromatin granule clusters. However, dispersed chromatin sensitive to DNase I are found at the borders and in the close vicinity of interchromatin granule clusters. The results indicate that interchromatin granule clusters should not be nuclear structures directly involved in RNA transcription but rather in some other steps of RNA metabolism. [less ▲]

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See detailMourir à son postmoderne
Demoulin, Laurent ULg

in Ecritures (1993), 5

Treize réflexions sur la notion de postmodernité, considérée étymologiquement, c'est-à-dire comme un "après" la modernité (et non comme un retour en arrière, ou une surmodernité). La postmodernité est à ... [more ▼]

Treize réflexions sur la notion de postmodernité, considérée étymologiquement, c'est-à-dire comme un "après" la modernité (et non comme un retour en arrière, ou une surmodernité). La postmodernité est à distinguer du postmodernisme (si celui-ci existe). [less ▲]

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See detailSodium et hypertension artérielle essentielle. Nouveau refrain pour une vieille chanson
Krzesinski, Jean-Marie ULg

in L'Information Cardiologique (1993), 17(7), 299-304

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See detailProduction of hemicellulase by Penicillium canescens 10-10C. Arch. Int. Phys. Bioch., 101, B1-B00.
Fonder, C.; Rikir, R.; Kvesitadze, G. et al

in Archives Internationales de Physiologie et de Biochimie (1993), 101(B1-B100),

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See detailSell-Off en de welvaart van aandeelhouders
Corhay, Albert ULg; Tourani-Rad, Alireza

in Maandblad voor Accountancy en Bedrijfseconomie [=MAB] (1993), 67(10), 471-477

In het kader van de herstructurering van het Nederlandse bedrijfsleven vindt de laatste jaren een groot aantal Sell-Offs plaats. Theoretici betogen dat een Sell-Off een aantal voordelen voor het ... [more ▼]

In het kader van de herstructurering van het Nederlandse bedrijfsleven vindt de laatste jaren een groot aantal Sell-Offs plaats. Theoretici betogen dat een Sell-Off een aantal voordelen voor het afstotende moederbedrijf oplevert. Blijkens deze studie ondersteunt het empirische onderzoek de theorie. In Nederland lijken significante buitengewone positieve koerseffecten op de dag van aankondiging voor de aandeelhouders van de verkopende bedrijven met dit soort transacties gepaard te gaan. Tevens is vastgesteld dat de aard van de aankondiging en de bekendmaking van het motief voor de Sell-Off positieve significante invloed heeft op de grootte van het buitengewoon rendement. Ten slotte is geconcludeerd dat alleen in het geval van buiten Nederland gevestigde dochters sprake is van een positief significant rendement [less ▲]

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See detailConstruction of a bovine genomic library of large yeast artificial chromosome clones
Libert, F.; Lefort, A.; Okimoto, R. et al

in Genomics (1993), 18(2), 270-276

We have constructed a yeast artificial chromosome (YAC) library derived from bull fibroblasts in primary culture. The library consists of 21,500 clones arranged on 224 gridded plates (96 or 8×12 positions ... [more ▼]

We have constructed a yeast artificial chromosome (YAC) library derived from bull fibroblasts in primary culture. The library consists of 21,500 clones arranged on 224 gridded plates (96 or 8×12 positions) and in 2×224 96-well microplates maintained as permanent frozen stocks. An average insert size of 750 kb was estimated from the analysis of 200 randomly selected YACs, giving a sixfold coverage of the bovine genome for the total library. A screening strategy based on the polymerase chain reaction that allows the identification of individual clones has been devised. Screening of the library with six locus-specific markers of interest led to the isolation of 34 positive clones [less ▲]

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See detailSpelling en spellingverandering : een slingerbeweging in de tijd
Vromans, Joseph ULg

in Nederlands van Nu (1993), 41

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See detailLaparoscopic surgery, urology and gynaecology
Joris, Jean ULg

in Current Opinion in Anaesthesiology (1993), 6

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See detailApplications de l'échographie en reproduction bovine. 2. L'utérus gestant et non-gestant.
Hanzen, Christian ULg; Laurent, Yves; Jakovljevic, Samy

in Annales de Médecine Vétérinaire (1993)

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See detailLa fonction centrale du thymus dans la reconnaissance des fonctions neuroendocrines par les lymphocytes T au cours de leur développement
Geenen, Vincent ULg; Martens, Henri ULg; Cormann-Goffin, N. et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1993), 101(4, Jul-Aug), 19-22

The dual physiological role of the thymus in T cell positive and negative selection appears prominent in the establishment of appropriate host immune defenses. However, the cellular and molecular ... [more ▼]

The dual physiological role of the thymus in T cell positive and negative selection appears prominent in the establishment of appropriate host immune defenses. However, the cellular and molecular mechanisms underlying those thymic functions begin only to be understood. On the basis of our previous investigations about the thymic expression of different neuroendocrine-related signals, we have advanced a model which transposes at the peptide level the intervention of this primary lymphoid organ in both T cell positive and negative selective processes. There is now ample evidence that the thymic subcapsular and medullary epithelium is the site for synthesis of neurohypophysial (NHP)-related peptides (reviewed in Geenen et al., 1992a). We have also demonstrated that the epithelial component of thymic "nurse" cells (TNC) synthesizes NHP-related peptides and expresses a neuroendocrine-like phenotype (Geenen et al., 1988a). This observation was a remarkable example of the intimate neuroendocrine-immune interactions that take place during T cell ontogeny. Further immunocytochemical analyses have confirmed that one dominant NHP-related epitope belongs to the oxytocin (OT) lineage of the NHP peptide superfamily (Robert et al., 1991, 1992). The intrathymic coexpression of this OT-like epitope with a neurophysin protein domain is a strong argument for a local synthetic process similar to the hypothalamo-NHP one. However, the absence of ir-OT in secretory granules of thymic epithelial cells (TEC), as well as of NHP-related peptides in the supernatant of TEC cultures questioned the application to the thymus of the classical neurosecretory model established for hypothalamic magnocellular neurons (Scharrer [less ▲]

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See detailOlfactory receptors are displayed on dog mature sperm cells
Vanderhaeghen, P.; Schurmans, Stéphane ULg; Vassart, G. et al

in Journal of Cell Biology (1993), 123

Olfactory receptors constitute a huge family of structurally related G protein-coupled receptors, with up to a thousand members expected. We have shown previously that genes belonging to this family were ... [more ▼]

Olfactory receptors constitute a huge family of structurally related G protein-coupled receptors, with up to a thousand members expected. We have shown previously that genes belonging to this family were expressed in the male germ line from both dog and human. The functional significance of this unexpected site of expression was further investigated in the present study. We demonstrate that a few dog genes representative of various subfamilies of olfactory receptors are expressed essentially in testis, with little or no expression in olfactory mucosa. Other randomly selected members of the family show the expected site of expression, restricted to the olfactory system. Antibodies were generated against the deduced amino acid sequence of the most abundantly expressed olfactory receptor gene in dog testis. The purified serum was able to detect the gene product (DTMT receptor) in late round and elongated spermatids, as well as in the cytoplasmic droplet that characterizes the maturation of dog sperm cells, and on the tail midpiece of mature spermatozoa. Western blotting further confirmed the presence of a 40-kD immunoreactive protein in the membrane of mature sperm cells. Altogether , these results demonstrate that the main expression site of a subset of the large olfactory receptor gene family is not olfactory mucosa but testis. This expression correlates with the presence of the corresponding protein during sperm cell maturation, and on mature sperm cells. The pattern of expression is consistent with a role as sensor for unidentified chemicals possibly involved in the control of mammalian sperm maturation, migration, and/or fertilization [less ▲]

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See detailEarly prediction of response to recombinant human erythropoietin in patients with the anemia of renal failure by serum transferrin receptor and fibrinogen.
Beguin, Yves ULg; Loo, Martine; R'Zik, Samir ULg et al

in Blood (1993), 82(7), 2010-6

Recombinant human erythropoietin (rHuEpo) has been shown to be effective in correcting the anemia of chronic renal failure, but the dose needed may be variable. The reason for this variation is not known ... [more ▼]

Recombinant human erythropoietin (rHuEpo) has been shown to be effective in correcting the anemia of chronic renal failure, but the dose needed may be variable. The reason for this variation is not known, but several factors could be involved, such as iron deficiency, inflammation, aluminum intoxication, hyperparathyroidism, blood losses, or marrow dysfunction. Treatment with rHuEpo was given intravenously thrice weekly after hemodialysis to 64 consecutive unselected patients with the anemia of chronic renal failure. The starting dose was 50 U/kg/dose, which was increased to 75 and 100 U/kg/dose if no response was observed after 1 and 2 months of treatment. After a minimum follow-up of 6 months, response was evaluated as early (hematocrit [Hct] > or = 30% before 3 months) or late (Hct > or = 30% after 3 months) response, or failure (target Hct not attained). We examined the value of various laboratory parameters (baseline values and early changes) as predictors of response to rHuEpo. The best prediction by pretreatment parameters only was obtained with baseline serum transferrin receptor (TfR) (< or > or = 3,500 ng/mL) and fibrinogen (< or > or = 4 g/L): 100% response rate when both parameters were low, versus only 29% when they were both high, and versus 67% when one was low and the other high. When the 2-week TfR increment was greater than 20%, the response rate was 96%. When TfR increment was less than 20%, the response rate was 100% when baseline TfR and fibrinogen were low, 12% when fibrinogen was elevated, and 62% when fibrinogen was low but baseline TfR high. The predictive value of baseline TfR and fibrinogen and of the 2-week increment of TfR was confirmed by life table analysis and stepwise discriminant analysis. Major reasons for failure or late response were identified and included subclinical inflammation, iron deficiency, functional iron deficiency, marrow disorders, hemolysis, bleeding, and low Epo dose. We conclude that response to rHuEpo can be predicted early by pretreatment fibrinogen and TfR, together with early changes of TfR levels. These prognostic factors illustrate the importance of the early erythropoietic response, subclinical inflammation, and functional iron deficiency. Early recognition of a low probability of response in a given patient could help identify and correct specific causes of treatment failure to hasten clinical improvement and avoid prolonged ineffective use of an expensive medication. [less ▲]

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See detailModelling the Arterial Wall by Finite Elements
Mosora, F.; Harmant, A.; Hallet, Claude ULg et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1993), 101(3, May-Jun), 185-91

The mechanical behaviour of the arterial wall was determined theoretically utilizing some parameters of blood flow measured in vivo. Continuous experimental measurements of pressure and diameter were ... [more ▼]

The mechanical behaviour of the arterial wall was determined theoretically utilizing some parameters of blood flow measured in vivo. Continuous experimental measurements of pressure and diameter were recorded in anesthetized dogs on the thoracic ascending and midabdominal aorta. The pressure was measured by using a catheter, and the diameter firstly, at the same site, by a plethysmograph with mercury gauge and secondly, by a sonomicrometer with ferroelectric ceramic transducers. The unstressed radius and thickness were measured at the end of each experiment in situ. Considering that the viscous component is not important relatively to the nonlinear component of the elasticity and utilizing several equations for Young modulus calculation (thick and thin wall circular cylindrical tube formulas and Bergel's equation) the following values were obtained for this parameter: 0.6 MPa-2 MPa in midabdominal aorta and 2 MPa-6.5 MPa in thoracic ascending aorta. The behaviour of the aorta wall was modelled considering an elastic law and using the finite element program "Lagamine" working in large deformations. The discretized equilibrium equations are non-linear and a unique axi-symmetric, iso-parametric element of 1 cm in length with 8 knots was used for this bi-dimensional problem. The theoretical estimation of radius vessel, utilizing a constant 5 MPa Young modulus and also a variable one, are in good agreement with the experimental results, showing that this finite element model can be applied to study mechanical properties of the arteries in physiological and pathological conditions. [less ▲]

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See detailLes formes normes d’ordres,
Pays, Isabelle ULg

in Journal of Algebra (1993), 155

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See detailPilot study of flesinoxan in major depression. Effect on REM latency and body temperature
ANSSEAU, Marc ULg; PITCHOT, William ULg; Gonzalez Moreno, Antonio et al

in Human Psychopharmacology (1993)

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See detailFollicular dendritic cells: isolation procedures, short and long term cultures.
Heinen, Ernst ULg; Tsunoda, R.; Marcoty, C. et al

in Advances in Experimental Medicine and Biology (1993), 329

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See detailLocalisation scintigraphique de tumeurs neuroendocrines et de leurs métastases par un analogue de la somatostatine: [111In-DTPA-d-phe1] octréotide.
Beckers, Albert ULg; Pham, V. T.; Abs, R. et al

in Revue Médicale de Liège (1993), 48(6), 326-34

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See detailMonoamine Oxidase Inhibitors and Anesthesia: An Updated Literature Review
Blom-Peters, L.; Lamy, Maurice ULg

in Acta Anaesthesiologica Belgica (1993), 44(2), 57-60

Safe anesthesia for patients taking MAOIs has been possible since the 1980s using judicious choice of agents. The introduction of a new class of MAOIs (RIMA) has increased the margin of safety for these ... [more ▼]

Safe anesthesia for patients taking MAOIs has been possible since the 1980s using judicious choice of agents. The introduction of a new class of MAOIs (RIMA) has increased the margin of safety for these anesthetics. These drugs allow selective and rapidly reversible inhibition of type A-MAO. The pharmacologic effects of this new class of drug as well as their potential interactions with agents used in anesthesia are reviewed. [less ▲]

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See detailPalynological data from the Devono-Carboniferous boundary beds in the new Stockum Trench II and the Hasselbachtal Borehole. Northern Rhenish Massif, Germany.
Higgs, K; Streel, Maurice ULg; Korn, D et al

in Annales de la Société Géologique de Belgique (1993), 115(2/1992), 551-557

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See detailMicrosatellite mapping of a gene affecting horn development in Bos taurus
Georges, Michel ULg; Drinkwater, R.; Lefort, A. et al

in Nature Genetics (1993), 4(2), 206-210

The presence or absence of horns in Bos taurus is thought to be under the genetic control of the autosomal polled locus, characterized by two alleles: P dominant over p, and causing the polled or hornless ... [more ▼]

The presence or absence of horns in Bos taurus is thought to be under the genetic control of the autosomal polled locus, characterized by two alleles: P dominant over p, and causing the polled or hornless phenotype. We have demonstrated genetic linkage between the polled locus and two microsatellite markers, GMPOLL-1 and GMPOLL-2, and have assigned the corresponding linkage group to bovine chromosome 1. This confirms the existence of the postulated polled locus and the hypothesized inheritance pattern. It will allow marker assisted selection for the polledness trait in breeding programs and is a first step towards positional cloning and molecular study of a gene that has been subjected to both natural and artificial selection. [less ▲]

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See detailLe temps de la formation professionnelle pour les jeunes chômeurs
Robert, Jocelyne ULg

in Revue de l'Institut de Sociologie (1993), 1-4

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See detailLog jam effect on bed-load mobility from experiments conducted in a small gravel-bed channel
Assani, Ali; Petit, François ULg

in Memorial symposium Pro. J. De Ploey Experimental geomorphology and landscape ecosystem changes (1993)

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See detailMiddle Devonian to Lower Carboniferous Miospores from selected boreholes in Amazonas and Parnaiba basins (Brazil): additional data, synthesis, and correlation.
Loboziak, S; Streel, Maurice ULg; Caputo, MV et al

in Documents du laboratoire de Géologie de Lyon (1993), 125

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See detailDe la perversité des comptes rendus
Winand, Jean ULg

in Göttinger Miszellen (1993), 134

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See detailL'éducation, un acte fondamental
de Landsheere, Gilbert ULg

in Réseaux : Revue Interdisciplinaire de Philosophie Morale et Politique (1993), (67-69), 65-81

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See detailInventaire des végétaux éodévoniens de Belgique
Gerrienne, Philippe ULg

in Annales de la Société Géologique de Belgique (1993), 116

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See detailMicrosatellite mapping of the gene causing weaver disease in cattle will allow the study of an associated QTL
Georges, Michel ULg; Lathrop, M.; Dietz, A. B. et al

in Proceedings of the National Academy of Sciences of the United States of America (1993), 90

A genetic disease in cattle, progressive degenerative myeloencephalopathy (weaver disease), is associated with increased milk production. This association could result from population stratification, from ... [more ▼]

A genetic disease in cattle, progressive degenerative myeloencephalopathy (weaver disease), is associated with increased milk production. This association could result from population stratification, from a pleiotropic effect of a single gene, or from linkage disequilibrium between the gene causing weaver disease and a quantitative trait locus (QTL) for milk production. To test these hypotheses, we performed an extensive linkage study in a bovine pedigree segregating for the weaver condition and identified a microsatellite locus (TGLA116) closely linked to the weaver gene (zmax, 8.15; theta, 0.03). TGLA116 and, by extension, the weaver locus were assigned to bovine synteny group 13. This microsatellite can be used to identify weaver carriers, to select against this genetic defect, and to study the effect of the corresponding chromosomal region on milk production in Brown Swiss and other breeds of cattle. [less ▲]

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See detailL'ostéoporose
Reginster, Jean-Yves ULg

in Medipractice Digest (1993)

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See detailDesign and modeling of new platelet-activating-factor antagonists.1. Synthesis and biological activity of 1,4-bis(3',4',5'-trimethoxybenzoyl)-2-[[(substituted carbonyl and carbamoyl)oxy]methyl]piperazines
Lamouri, Aazdine; Heymans, Françoise; Tavet, Fabrice et al

in Journal of Medicinal Chemistry (1993), 36(8), 990-1000

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See detailPeut-on réfléchir sereinement sur les migrations humaines ?
Martiniello, Marco ULg

in Agenda Interculturel (1993), 113

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See detailPurification Of Antifungal Lipopeptides By Reversed-Phase High-Performance Liquid-Chromatography
Razafindralambo, Hary ULg; Paquot, Michel ULg; Hbid, Choukri et al

in Journal of Chromatography. A (1993), 639(1), 81-85

A rapid procedure for the purification of antifungal lipopeptides from Bacillus subtilis, a potential agent for biocontrol of plant diseases, was tested. It consists of a solid-phase extraction on C18 gel ... [more ▼]

A rapid procedure for the purification of antifungal lipopeptides from Bacillus subtilis, a potential agent for biocontrol of plant diseases, was tested. It consists of a solid-phase extraction on C18 gel followed by reversed-phase chromatography using a biocompatible PepRPC HR 515 column with a pharmacia fast protein liquid chromatographic system. This is a very effective method for isolating and fractionating iturin A and surfactin, two lipopeptides of different nature, co-produced by Bacillus subtilis strain S499. The presence of homologous lipopeptides was easily detected. [less ▲]

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See detailMutational analysis of the p50 subunit of NF-kappa B and inhibition of NF-kappa B activity by trans-dominant p50 mutants.
Bressler, P.; Brown, K.; Timmer, W. et al

in Journal of Virology (1993), 67(1), 288-93

The NF-kappa B family of DNA-binding proteins regulates the expression of many cellular and viral genes. Each of these proteins has an N-terminal region that is homologous to the c-Rel proto-oncogene ... [more ▼]

The NF-kappa B family of DNA-binding proteins regulates the expression of many cellular and viral genes. Each of these proteins has an N-terminal region that is homologous to the c-Rel proto-oncogene product, and this Rel homology region defines both DNA binding and protein dimerization properties of the individual proteins. Most of the NF-kappa B family members have been shown to associate with themselves or with each other to form homodimers or heterodimers, and previous studies have shown that dimerization of NF-kappa B factors is necessary to provide a functional DNA binding domain. We have used site-directed mutagenesis to identify regions in the Rel homology domain of the p50/NF-kappa B protein that are important for DNA binding and protein dimerization. Our studies have identified mutations of p50 that interfere with DNA binding only and those that interfere with protein dimerization. Mutations of p50 which disrupt only DNA binding were still able to associate with other members of the NF-kappa B protein family. We demonstrate that such heterodimeric complexes inhibit transcriptional activation mediated in trans through a cis-acting kappa B motif; therefore, we have identified trans-dominant negative mutants of p50. [less ▲]

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See detailLa racine grb et l'Amon-grb
Malaise, Michel ULg; Winand, Jean ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1993), 68

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See detailOccurrence of contrasting skarn formations in dolomites of the Traversella deposit (Ivrea, Italy)
Vander Auwera, Jacqueline ULg; Verkaeren, Jean

in Geologische Rundschau : Zeitschrift für Allgemeine Geologie (1993), 82

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See detailPiroxicam-Beta-Cyclodextrin in the Treatment of Acute Pain of Rheumatic Disease
Reginster, Jean-Yves ULg; Franchimont, P.

in European Journal of Rheumatology and Inflammation (1993), 12(4), 38-46

Analgesics continue to be the mainstay of therapy in osteoarthritis. Non-steroidal anti-inflammatory drugs (NSAIDs) play an important role, particularly where there is a significant inflammatory component ... [more ▼]

Analgesics continue to be the mainstay of therapy in osteoarthritis. Non-steroidal anti-inflammatory drugs (NSAIDs) play an important role, particularly where there is a significant inflammatory component to the osteoarthritis. Piroxicam-beta-cyclodextrin (PBC) is a new formulation in which piroxicam has been complexed with beta-cyclodextrin, a cyclic oligosaccharide. This results in an increase in the rate of absorption of the active compound and, consequently, in an earlier onset of analgesic action. PBC, like piroxicam, is administered once daily. PBC has been used in the treatment of osteoarthritis. In comparison with piroxicam, PBC showed a more rapid analgesic-anti-inflammatory action after the first administration in patients with active osteoarthritis. Subsequent evaluations at the second, fifth and last day of treatment demonstrated a comparable efficacy of the two drugs. The efficacy and tolerability of PBC was compared with other NSAIDs given intramuscularly, such as diclofenac and ketoprofen. The three compounds provided marked pain relief within thirty minutes and this increased progressively until the third to fourth hour. The efficacy of oral PBC was comparable to that of intramuscular diclofenac or ketoprofen. In comparison with metamisole PBC achieved a more rapid and sustained reduction in pain intensity during the first twelve hours of treatment. This rapid and marked reduction in pain intensity with PBC was also observed in patients with low-back pain when compared with etodolac. In view of its efficacy, tolerability and rapid onset of action, piroxicam-beta-cyclodextrin appears to be an useful analgesic and a prominent progress in the treatment of acute rheumatic pain. [less ▲]

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See detailIntracellular damages induced by singlet oxygen are signals for HIV-1 reactivation
Piette, Jacques ULg; Legrand-Poels, Sylvie ULg

in Journal of Free Radicals in Biology & Medicine (1993)

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See detailConfidence levels of correlations between miospore biohorizons and standard conodont zones during Middle and Late Devonian time.
Streel, Maurice ULg; Loboziak, S

in Newsletter. Subcommission on Devonian Stratigraphy (1993), 10

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See detailUnimolecular reaction dynamics from Kinetic Energy Release Distributions. 1 - Dissociation of Bromobenzene Ions.
Lorquet, Jean-Claude ULg; Leyh, Bernard ULg

in Organic Mass Spectrometry (1993), 28

Preliminary data on a new method for extracting data from the kinetic energy release distribution of metastable fragment ions are presented. This method can give information concerning the energy ... [more ▼]

Preliminary data on a new method for extracting data from the kinetic energy release distribution of metastable fragment ions are presented. This method can give information concerning the energy threshold of the reaction and the energy dependence of the rate constant (i.e. its logarithmic derivative). It was applied to bromine loss from bromobenzene cations. [less ▲]

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See detail"Influence of bioreactor aeration conditions on sporulation rate of Bacillus subtilis (b 213 stream)"
Meurisse, E.; Hbid, Ch.; Jacques, Ph. et al

in Mededelingen - Faculteit Landbouwwetenschappen, Rijksuniversiteit Gent (1993), 58(4b), 1985-1987

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See detailON THE FORMATION OF PHOTOSYSTEM-II CHLOROPHYLL PROTEINS AFTER A SHORT LIGHT FLASH IN ETIOLATED BARLEY LEAVES, AS MONITORED BY INVIVO FLUORESCENCE SPECTROSCOPY
Franck, Fabrice ULg

in Journal of Photochemistry and Photobiology B : Biology (1993), 18(1), 35-40

The biogenesis of photosystem II (PSII) was investigated using 77 K fluorescence spectroscopy in etiolated barley leaves subjected to a millisecond flash which reduced all protochlorophyllide (Pchlide ... [more ▼]

The biogenesis of photosystem II (PSII) was investigated using 77 K fluorescence spectroscopy in etiolated barley leaves subjected to a millisecond flash which reduced all protochlorophyllide (Pchlide) into chlorophyllide (Chlide). In darkness after the flash, a slow chlorophyll (Chl) band shift from 682 to 684 nm was associated with the development of PSII variable fluorescence. Two Chl fluorescence bands at 678 and 687 nm were formed during the shift, the 687 nm band corresponding to the spectrum of the PSII variable fluorescence. The development of PSII fluorescence was inhibited by chloramphenicol and enhanced by cyclobeximide, suggesting a competition between plastid- and nucleus-encoded proteins for Chl binding. [less ▲]

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See detailExteroceptive suppression of temporalis muscle activity in patients with chronic headache and in normal volunteers: methodology, clinical and pathophysiological relevance.
Schoenen, Jean ULg

in Headache (1993), 33(1), 3-17

Exteroceptive suppression of temporalis muscle activity was studied in patients with chronic headache and in healthy controls. Among different methods of recording, averaging 10 full-wave rectified EMG ... [more ▼]

Exteroceptive suppression of temporalis muscle activity was studied in patients with chronic headache and in healthy controls. Among different methods of recording, averaging 10 full-wave rectified EMG responses produces results with acceptable variability and discomfort. The late temporalis exteroceptive suppression period (ES2) is reduced on average in patients with chronic tension-type headache; this finding has been reproduced by several independent laboratories. Mean duration of temporalis ES2 is also diminished, but to a lesser degree, in daily drug abuse headache and, as shown by others, in episodic tension-type headache. It is normal in migraine between attacks, cluster headache and various types of symptomatic headaches. Temporalis ES2 may be decreased in untreated patients with major depression. In healthy volunteers, temporalis ES2 duration is reduced by a short-lasting painful stimulus to peripheral limbs after a delay of 50 to 60 ms, and by a sub-motor threshold electromagnetic stimulation to the contralateral cerebral cortex after a delay of 20 to 30 ms. In contrast, long-lasting trains of peripheral painful stimuli have no effect. Various pharmacological agents are able to modify temporalis ES2. Its duration is increased by 5-HT antagonists, but decreased by 5-HT uptake blockers. Pharmacological effects may differ between controls and patients. Considering these results and available data on the anatomo-functional organization of masticatory reflexes, we postulate that temporalis ES2 is a marker of the excitability of interneuronal nets in the ponto-medullary reticular formation. In chronic tension-type headache, excitability of these interneurons is decreased because of inadequate control by the serotonergic raphe magnus nucleus and the periaqueductal gray matter. Dysfunctioning of the latter structures might be caused by abnormal limbic inputs to the brain stem. Some steps of this pathophysiological hypothesis can be verified by modern neurophysiological techniques. [less ▲]

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See detailOptical imaging of the gravitational lens system B 1422+231
Remy; Surdej, Jean ULg; Smette, A. et al

in Astronomy and Astrophysics (1993), 278

Direct optical images (Bessel V, R and Gunn i; average seeing of 0.88 seconds) of B1422+231, obtained in March 1993 at European Southern Observatory (ESO) (La Silla), have been decomposed by fitting ... [more ▼]

Direct optical images (Bessel V, R and Gunn i; average seeing of 0.88 seconds) of B1422+231, obtained in March 1993 at European Southern Observatory (ESO) (La Silla), have been decomposed by fitting multiple Point Spread Functions (PSFs). We detect the optical counterparts of the four known radio point-like components. No additional optical image is found, but due to the compactness of the configuration, our detection limit for additional point sources is rather low (19.3 in R). The deduced positions and photometry of the four optical components agree pretty well with the radio and IR observations and this study provides further evidence supporting the gravitational lens origin of B1422+231. [less ▲]

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See detailApport de la mesure ambulatoire de la pression artérielle dans une consultation d'hypertension artérielle
Saint-Remy, Annie ULg; Dubois, Bernard ULg; Krzesinski, Jean-Marie ULg et al

in Journal de Cardiologie [= JDC] = Tijdschrift voor Cardiologie [= TVC] (1993), 5(1), 6-13

La fréquence du syndrome de la blouse blanche, l'importance de la charge tensionnelle et de la variabilité de la pression artérielle au cours du nycthémère ont été analysées dans une population de 181 ... [more ▼]

La fréquence du syndrome de la blouse blanche, l'importance de la charge tensionnelle et de la variabilité de la pression artérielle au cours du nycthémère ont été analysées dans une population de 181 patients ayant bénéficié d'un enregistrement de la pression artérielle en ambulatoire pendant 24 heures. En dépit d'une bonne corrélation entre la mesure clinique de la pression artérielle et la pression moyenne de jour ou de 24 heures, on observe une discordance entre les niveaux de pression fournis par les deux méthodes (la pression clinique étant supérieure à la pression en ambulatoire et cela d'autant plus que la pression clinique est élevée). Lors de l'évaluation de l'efficacité du traitement antihypertenseur, l'analyse des tracés montre qu'un tiers des patients traités ont des pressions normalisées, alors que deux tiers d'entre eux conservent des pressions de jour et de 24 heures nettement supérieures aux critères définissant l'hypertension artérielle. Par ailleurs, cette étude souligne également la supériorité des valeurs de pression en ambulatoire (surtout la pression systolique) par rapport à la pression clinique comme prédicteur d'une hypertrophie ventriculaire gauche. Ces observations confirment l'intérêt de cette technique non invasive de mesure de la pression artérielle moyenne tant pour objectiver l'effet blouse blanche, et ainsi préciser le diagnostic d'une hypertension artérielle, que pour s'assurer du contrôle de la pression par les thérapeutiques antihypertensives. [less ▲]

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See detailVers la postmodernité
Badir, Sémir ULg

in Ecritures (1993), 5

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See detailRapid and Selective Isolation of Follicular Dendritic Cells by Low Speed Centrifugations on Discontinuous Bsa Gradients
Marcoty, C.; Heinen, Ernst ULg; Antoine, Nadine ULg et al

in Advances in Experimental Medicine and Biology (1993), 329

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See detailHormonal regulation of adult partner preference behavior in neonatally ATD-treated male rats.
Bakker, Julie ULg; Brand, T.; van Ophemert, J. et al

in Behavioral Neuroscience (1993), 107(3), 480-7

Male rats, neonatally treated with ATD (1,4,6-androstatriene-3,17-dione), which blocks the aromatization of testosterone into estradiol (E2), were tested for adult partner preference behavior (PPB ... [more ▼]

Male rats, neonatally treated with ATD (1,4,6-androstatriene-3,17-dione), which blocks the aromatization of testosterone into estradiol (E2), were tested for adult partner preference behavior (PPB; estrous female vs. active male). Castration caused a decrease in preference for the female partner in all males, with ATD males showing lower preference for the female partner than controls. Long-term castrated males did not show preference for either partner. Precastration levels of PPB in control males occurred after treatment with E2 or dihydrotestosterone (DHT) plus E2. DHT alone had no effect on PPB. With E2 alone, the ATD males clearly preferred the male partner. When DHT was added, these ATD males showed no preference for either partner or a low preference for the female partner. In conclusion, adult PPB in male rats is activated by endogenous testosterone or by both its metabolites (DHT and E2) or by E2 alone. ATD males showed a much lower preference for the female. There was a differential effect of DHT and E2: DHT had no effect, but E2 clearly caused ATD males to prefer the male partner and control males to prefer the female partner. [less ▲]

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See detailThermal conductivity measurements in soil using an instrument based on the cylindrical probe method
Nicolas, Jacques ULg; Andre, Philippe ULg; Rivez, Jean-François et al

in Review of Scientific Instruments (1993), 64(3), 774-780

The article discusses the underlying hypothesis, the limits, the range of application, and the practical operation of a versatile thermal conductivity analyzer based on a transient cylindrical probe ... [more ▼]

The article discusses the underlying hypothesis, the limits, the range of application, and the practical operation of a versatile thermal conductivity analyzer based on a transient cylindrical probe method. The best expected precision for the conductivity determination appears to be ~±10%. A compact analyzer, integrating all the apparatus' components in the same unit, has been specifically designed for environmental research in the field. Calibration received special attention regarding thermal conductivity values in the range 0.1–3 W/mK. The analyzer was tested on seven materials, in field conditions, and discrepancies from published conductivity values did not exceed 9%. Several checks were performed in the laboratory to study the influence of experimental conditions, such as the probe insertion technique. The cylindrical probe method appears well suited to powdered materials, but may also be applied to viscous liquids and solid matter. As an application, the cylindrical probe was used to characterize nine soils from the Belgian Lorraine. After soil analysis in the dry state, thermal conductivity of each sample was determined at different moisture contents. The transient cylindrical probe method proved to be quick and easy, whether in situ or on samples in the laboratory. It is a powerful tool which can map a country's soil thermal properties. [less ▲]

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See detailCaractéristiques du nid et du site de nidification chez le grèbe huppé (Podiceps cristatus). Influence sur le succès des éclosions
Marechal, Corinne ULg

in Cahiers d'Ethologie (1993), 13(1), 1-34

The study aimed at determining the influence of nest and nest-site characteristics on breeding success in a population of great Crested grebes (Podiceps cristatus) nesting on an old máeander of the river ... [more ▼]

The study aimed at determining the influence of nest and nest-site characteristics on breeding success in a population of great Crested grebes (Podiceps cristatus) nesting on an old máeander of the river Meuse on the Belgium-Dutch border. Evolution of clutches has been followed during two breeding seasons (1991 and 1992). The features of the nests and the nest-sites have been subjected to a multivariate analysis. It’s difficult to distinguish clearly between successful and unsuccessful nests during the same year. Moreover, most characteristics are not constant any year. Only two parameters seem to have the same effects on nesting success in 1991 and 1992 : the distance from nest to nearest neighbour and the water level in nest site. Nests distant from another nest and in deep water were less successful. Other possible causes of nesting failure have been tackled (investigator disturbance, bad weather conditions, fall of eggs, clutch-destruction by human). [less ▲]

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See detailPalaeolithic and Mesolithic Research in Belgium, 1993: le Trou Magrite, Huccorgne & l'Abri du Pape
Straus, Lawrence; Otte, Marcel ULg; Cordy, Jean-Marie ULg et al

in Old World Archaeology Newsletter (1993), XVII(1), 17-24

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See detailL'antiquité classique comme source d'inspiration dans l'oeuvre de Karel Tchapek
Mouton, Charles ULg

in Slavica Gandensia (1993), 20

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See detailMathematical Programming Methods for Constrained Optimization: Dual Methods
Fleury, Claude ULg

in Progress in Astronautics and Aeronautics (1993), 150

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See detailLa transcription du nominatif -wn dans les noms propres grecs des inscriptions latines de Rome
Purnelle, Gérald ULg

in Revue. Informatique et Statistique dans les Sciences Humaines (1993)

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See detailImprovement Yarrowia lipolytica lipase production by mutant selection.
Destain, Jacqueline ULg; Roblain, D.; Thonart, Philippe ULg

in Archives Internationales de Physiologie et de Biochimie (1993), 101(B1-B25),

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See detailComparison of three metrenperone dosage regimens inhibiting the 5-hydroxytryptamine-induced pulmonary dysfunction in cattle
Linden, Annick ULg; Desmecht, Daniel ULg; Amory, Hélène ULg et al

in Research in Veterinary Science (1993), 55

The effects of a 5-hydroxytryptamine (5-HT) challenge infusion on pulmonary function values were studied in healthy calves, pretreated with varying doses of metrenperone, a selective type 2 serotonergic ... [more ▼]

The effects of a 5-hydroxytryptamine (5-HT) challenge infusion on pulmonary function values were studied in healthy calves, pretreated with varying doses of metrenperone, a selective type 2 serotonergic (5-HT2) antagonist. In the first part of the experiment, the 5-HT challenge was performed 30 minutes after administration of metrenperone at a dose of 0.025 mg kg-1 (group 1, n = 8), 0.050 mg kg-1 (group 2, n = 8) and 0.100 mg kg-1 (group 3, n = 7). In the second part, the 5-HT challenge was performed 12 hours after administration of metrenperone at a dose of 0.050 mg kg-1 (group 4, n = 5) and 0.100 mg kg-1 (group 5, n = 5). None of the three doses of metrenperone influenced the 5-HT-induced ventilatory changes. For the challenge performed 30 minutes after blockade, all three doses inhibited the bronchoconstrictive process triggered by the 5-HT challenge. There was no dose-related inhibition. On the other hand, when the challenge was performed 12 hours after metrenperone, there was a dose-related inhibition with only the higher dose (0.100 mg kg-1) showing a significant efficacy in inhibiting 5-HT-induced bronchoconstriction. It is concluded that, if 5-HT is involved in the pathophysiological processes of respiratory diseases in cattle, a 5-HT2 blockade with metrenperone at a dose rate of 0.100 mg kg-1 and with a dosage interval of 12 hours should improve pulmonary function. [less ▲]

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See detailCompte-rendu de B. A. SHAILOR, Catalogue of Manuscripts in Yale University
George, Philippe ULg

in Moyen Age (Le) (1993)

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See detailAnalgesic Efficiency of Propacetamol Hydrochlorid after Lumbar Disc Surgery
Hans, Pol ULg; Brichant, Jean-François ULg; Bonhomme, Vincent ULg et al

in Acta Anaesthesiologica Belgica (1993), 44(4), 129-33

The influence of intravenous propacetamol hydrochlorid administration on postoperative analgesia and intramuscular opioid consumption was assessed in a randomized placebo-controlled study. Fourty patients ... [more ▼]

The influence of intravenous propacetamol hydrochlorid administration on postoperative analgesia and intramuscular opioid consumption was assessed in a randomized placebo-controlled study. Fourty patients scheduled for lumbar disc surgery were randomly allocated to two groups. They were given either propacetamol 2 g or saline every 6 hours, starting at the end of procedure for a 24 hours period. The pain intensity (VAS) was not significantly different between the two groups except 3 and 4 hours after surgery, where it was higher in the paracetamol group. The cumulative narcotic consumption (piritramide on request) was higher in the placebo group from 6 hours till 9 hours after surgery but not significantly different after 24 hours. Piritramide administration decreased VAS score significantly in both groups while propacetamol reduced it in a significant way only when given from 12 hours after surgery. [less ▲]

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See detailThree-dimensional General Circulation Model of the Northern Bering Sea’s Summer Ecohydrodynamics
Nihoul, Jacques ULg; Adam, Paul; Brasseur, Pierre et al

in Continental Shelf Research (1993), 13(5-6), 509-542

The main features of the northern Bering Sea's summer ecohydrodynamics are investigated with the help of two three-dimensional—direct and inverse—models developed at theGeoHydrodynamics ... [more ▼]

The main features of the northern Bering Sea's summer ecohydrodynamics are investigated with the help of two three-dimensional—direct and inverse—models developed at theGeoHydrodynamics andEnvironmentResearch Laboratory of the University of Liège (GHER). Each model consists of two interacting sectorial submodels for (i) the general circulation hydrodynamics and synoptic structures, and (ii) the associated plankton ecosystem dynamics. The direct model is used to simulate, from an initial state compatible with historical, climatological and all available data pertinent to the summer season, a typical overview of the northern Bering Sea's ecohydrodynamics during the summer. The inverse model is applied in a two-fold perspective: (i) the reconstruction of typical summer distributions of temperature and salinity by using more than 1500 CTD profiles measured during the months of July, August and September, in the course of the ISHTAR program; (ii) considering the observations from specific ISHTAR surveys as quasi-synoptic, the reconstruction of individual data fields in order to provide additional information to assess the variability of the system. The model's predictions indicate that the summer dynamics are dominated by a few cogent semi-permanent and reproducible mechanisms which govern the main water mass transports, the upwellings, the fronts and the subsequent seasonal patterns of primary and secondary productions. The general circulation fields calculated by the direct model are considered as a standard of reference to give a coherent interpretation of—local and often instantaneous—observations, process studies and related results, in the context of the natural variability of the system. The simulated flow pattern has been validated, using the set of current measurements provided by 1985 and 1986 ISHTAR moorings. The contribution of the Anadyr Stream to the northward transport is reproduced qualitatively and quantitatively. The vertical motions—undetectable from direct experiments—are computed by the model, and represent one of the most efficient constraints on the ecohydrodynamics. For instance, the strong upwelling located along the Siberian coast—the existence of which was only presumed until recently—is now correctly estimated in position and intensity. The exceptionally high concentrations of nutrients found in the upwelled water turn this hydrodynamic structure into a catalyst element for the development of biological species in the region. The pattern of primary production shows two successive maxima: the first appears as a direct consequence of the frontal conditions associated with the Anadyr Stream, whereas the second develops further north, in the Chukchi Sea. The results display a fairly good agreement with the classical descriptions induced from observations, and suggest that the advection-growth coupling is the main physical conditioning factor for biological processes. [less ▲]

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See detailMonth-to-month variability of the general circulation fields in the western Mediterranean and the Gulf of Lions
Beckers, Jean-Marie ULg; Brasseur, P.

in Water Pollution Research (1993), 30

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See detailComparison of the cardiac pumping capability and cardiac pumping reserve in double muscled and conventional calves
Amory, Hélène ULg; Mc Entee, Kathleen ULg; Linden, Annick ULg et al

in Canadian Journal of Physiology & Pharmacology (1993), 71(12), 946-951

Hereditary muscular hypertrophy is a character that has been selected in several animal species for industrial meat production. The selection of this character in cattle produces animals of exceptional ... [more ▼]

Hereditary muscular hypertrophy is a character that has been selected in several animal species for industrial meat production. The selection of this character in cattle produces animals of exceptional commercial value but ones with a lower aerobic capacity than that of conventional cattle. The purpose of this work was to study the role of cardiac function as a potential limiting factor of aerobic capacity in double-muscled calves. Two groups of healthy calves were studied, one consisting of nine calves of conventional conformation and the other of nine double-muscled calves. Pulmonary arterial and capillary wedge, central venous, and systemic arterial pressures were measured by fluid-filled catheters and recorded together with the electrocardiogram. Cardiac output was measured by the thermodilution technique. From these measurements, the heart rate, the cardiac and the stroke indices, the pulmonary and the systemic vascular resistances, and the cardiac power output were calculated. The parameters were recorded under basal resting conditions and during incremental dobutamine challenge, which allowed determination of the resting cardiac power output, the cardiac pumping capability, and the cardiac reserve. Dobutamine challenge induced a significant rise in cardiac and stroke indices, heart rate, and cardiac power output, a significant decrease in pulmonary and systemic vascular resistances, and no change in systemic and pulmonary arterial pressures. The cardiac reserve obtained in the present study was low in comparison with those previously reported in humans, dogs, and horses. This may be related to the poor running capability of bovine species relative to that of the former species.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailEffects of trace metals on mouse B16 melanoma cells in culture
Bahbouth, Eliane; Siwek, Brigitte; Gillet, Marie-Claire ULg et al

in Biological Trace Element Research (1993), 36(2), 191-201

The effects of fourteen metal ions on B16 cell proliferation, differentiation and melanogenesis have been analysed.

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See detailChylothorax: a rare complication of endoscopic variceal sclerotherapy.
Bury, Thierry ULg; Corhay, Jean-Louis ULg; Louis, Renaud ULg et al

in European Journal of Gastroenterology & Hepatology (1993), 5

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See detailBIOLOGICAL-ACTIVITY OF THE SHRUB BOSCIA-SENEGALENSIS (PERS) LAM EX-POIR (CAPPARACEAE) ON STORED GRAIN INSECTS
SECK, D.; Lognay, Georges ULg; Haubruge, Eric ULg et al

in Journal of Chemical Ecology (1993), 19(2), 377-389

Biological activity of leaves, fruits and extract of the African shrub Boscia senegalensis (PERS.) LAM. ex Poir. was evaluated against five stored-grain insects. When added to cowpeas at 2-4% (w/w), fresh ... [more ▼]

Biological activity of leaves, fruits and extract of the African shrub Boscia senegalensis (PERS.) LAM. ex Poir. was evaluated against five stored-grain insects. When added to cowpeas at 2-4% (w/w), fresh ground fruits and leaves caused 80-100% mortality in Callosobruchus maculatus (F.) adults and significantly reduced both emergence and damage of the F1 progeny. Acetone fruit extract exhibited a potent fumigant effect on Prostephanus truncatus HORN., C maculatus, and Sitotroga cerealella OLIV.: with LT50 values of 3.8, 2.3, and below 1.5 hr, respectively. LC50 determination for B. senegalensis fruits and leaves as well as pure methylisothiocyanate (MITC) on Tribolium castaneum HERBST, Sitophilus zeamais MOTSCH. and C. maculatus showed a differential response of the insects to plant parts or MITC. Quantitative dosage of Boscia active components and LC50 values obtained for the plant tissues, compared to those of pure molecules, indicate that the biological activity of B. senegalensis is due to the liberation of MITC from a glucosinolate precursor glucocapparin contained in Boscia fruits and leaves. [less ▲]

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See detailIdentification of elemental sulphur (S8) in Boscia senegalensis (Pers.) Lam ex Poir. leaves.
Lognay, Georges ULg; Seck, D.; Marlier, M. et al

in Bulletin des Recherches Agronomiques de Gembloux (1993), 28(4),

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See detailEnvironnement socio-géographique et état de santé de la population liégeoise
Gosset, Christiane ULg

in Le journal du Réseau Villes-Santé - Réseau français (1993), 4

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See detailHyperlipidemies et medicaments hypolipidemiants.
Scheen, André ULg; Paquot, Nicolas ULg

in Journal de Pharmacie de Belgique (1993), 48(2), 92-101

Hyperlipidaemia, as a primary atherogenic risk factor, represents a major problem of public health. This review first reminds the main steps of lipoprotein metabolism, the classification of the most ... [more ▼]

Hyperlipidaemia, as a primary atherogenic risk factor, represents a major problem of public health. This review first reminds the main steps of lipoprotein metabolism, the classification of the most frequent hyperlipidaemias, the objectives of the treatment and the required initial evaluation allowing to decide how to manage the patient. Thereafter, it describes all the available treatments, more particularly the characteristics of the various lipid lowering drugs. Finally, it proposes a step by step strategy for the treatment of the main hyperlipidaemias and summarizes the managements of some particular cases. [less ▲]

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