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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 detailTemperature, air humidity and air pollution levels in breeding pig houses
Nicks, Baudouin ULg; Canart, B.; Vandenheede, Marc ULg

in Pigs News and Information (1993), 14(2), 77-78

A study was undertaken to provide practical information concerning the frequency of temp. and RH measurements required to obtain a good estimate of their averages and of their daily variations, and to ... [more ▼]

A study was undertaken to provide practical information concerning the frequency of temp. and RH measurements required to obtain a good estimate of their averages and of their daily variations, and to determine the relationships between ammonia, carbon dioxide and bacterial concn in a pig house. Measurements were made in 9 artificially ventilated farrowing or weaner houses with slatted floors. Temp. and RH were measured every 20 min for 7 d. Sensors were placed inside buildings in the middle of the houses, 0.8 m above floor level, and outside the buildings. Data were recorded using a datalogger. Ammonia and carbon dioxide concn were measured using 8 h Gastec diffusion tubes. Three readings were taken in the same location at 2-day intervals. The airborne bacterial concn was measured with a 6-stage Andersen sampler. Bacteria colony forming particles (BCFP) were collected by impacting onto agar-filled petri dishes which are placed in an incubator for 24 h prior to counting the colonies formed. Results are discussed, indicating no significant correlation between the 3 measures of pollution (NH3 and CO2 concn, BCFP levels) despite careful microclimate control. [less ▲]

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See detailEffect of prolactin on alpha and beta chloride cells in the gill epithelium of the saltwater adapted tilapia " Oreochromis niloticus"
Pisam, B.; Auperin, B.; Prunet, P. et al

in Anatomical Record (1993), 235

Tilapia (Oreochromis niloticus), 21 g average body weight, were divided into two groups. A group was maintained in fresh water, whereas another group was adapted for 2 weeks to 20% salt water. Among the ... [more ▼]

Tilapia (Oreochromis niloticus), 21 g average body weight, were divided into two groups. A group was maintained in fresh water, whereas another group was adapted for 2 weeks to 20% salt water. Among the latter, fishes were injected every 2 days for a week with tilapia prolactin (ti-PRL I). Gills were prepared for electron microscopy in order to determine the types and surface areas of chloride cells in each experimental condition. Two types of chloride cells, the alpha and beta cells were easily distinguished on the basis of their location and ultrastructural features in the gills of freshwater fishes, while only one type of cell, the saltwater alpha cells presumably derived from the transformation of the freshwater alpha cells, were encountered in saltwater adapted animals. After PRL injection of saltwater adapted fishes, small chloride cells, which displayed ultrastructural features similar to those of beta cells in freshwater tilapia, reappeared in interlamellar regions of the gills. In the same experimental conditions, the voluminous saltwater alpha cells showed a tendency to resume ultrastructural features more characteristic of the freshwater alpha cells from which they were derived. These observations tend to indicate that prolactin behaves as a "freshwater adapting hormone" and that beta cells are specifically involved in fish adaptation to freshwater living conditions. [less ▲]

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See detailMolecular Biology of tilapia prolactins
Swennen, E.; Sekkali, B.; Poncelet, A. C. et al

in Fundamental and applied research for aquaculture (1993)

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See detailSYNCYTIOTROPHOBLASTIC LOCALIZATION OF THE HUMAN GROWTH-HORMONE VARIANT MESSENGER-RNA IN THE PLACENTA
Scippo, Marie-Louise ULg; Frankenne, Francis ULg; HOOGHEPETERS, ELisabeth et al

in Molecular & Cellular Endocrinology (1993), 92(2), 7-13

The hGH/hCS genes, clustered on chromosome 17 in the 5' to 3' order GH-N, CS-L, CS-A, GH-V and CS-B, show a high degree of sequence identity. The expression product of the GH-V gene is the placental ... [more ▼]

The hGH/hCS genes, clustered on chromosome 17 in the 5' to 3' order GH-N, CS-L, CS-A, GH-V and CS-B, show a high degree of sequence identity. The expression product of the GH-V gene is the placental growth hormone, which replaces pituitary GH in maternal blood throughout pregnancy. By means of mRNA competitive hybridization using P-32-labelled and unlabelled 30 bases long oligonucleotides, we first optimized specific hybridization conditions. In situ hybridization was then performed to locate the GH-V mRNA encoding placental growth hormone. The hGH-V gene appears expressed in the placental syncytiotrophoblast. Unlike the CS-A and CS-B genes (both encoding hPL) which are expressed uniformly in the syncytiotrophoblast, the GH-V mRNA is located in a few syncytiotrophoblast cells only. [less ▲]

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See detailPotentialités de modulation de la réaction inflammatoire
Delannoy, I.; Miossec, P.; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1993), 137

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See detailCytokine and anti-cytokine strategies in inflammatory reaction modulation
Delannoy, I.; Lekeux, Pierre ULg; Miossec, P.

in Veterinary Research (1993), 24

Evidence of the importance of a cytokine cascade in the induction and control of the inflammatory reaction is increasing. Although cytokines are required in the inflammatory process in response to ... [more ▼]

Evidence of the importance of a cytokine cascade in the induction and control of the inflammatory reaction is increasing. Although cytokines are required in the inflammatory process in response to infection or injury, their overproduction, particularly that of interleukin-1 (IL-1) and tumor necrosis factor (TNF), can lead to local/systemic pathology. Selective inhibition of the synthesis or of the action of specific cytokines may be of therapeutic benefit. Various strategies for blocking IL-1 and TNF activities have been presented. While selective inhibition of cytokine synthesis is still in the early experimental phase, specific blockade of soluble cytokine action following synthesis and release from cells is undergoing preliminary clinical trials in humans. Animal data suggest that antimonoclonal therapy such as monoclonal antibodies to TNF, IL-1 receptor antagonists or soluble receptors to TNF and IL-1 can be effective in the modulation of the inflammatory reaction. Modulation of the cytokine network in some diseases might also include the use of anti-inflammatory cytokines. Nonetheless, the possibilities of side effects due to impaired host-defense mechanisms with the IL-1 or TNF blockade must also be taken into consideration. [less ▲]

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See detailLes cellules ECL et leurs récepteurs: rôle physiologique et intérêt physiopathologique
Belaiche, Jacques ULg; Delwaide, Jean ULg; Louis, Edouard ULg et al

in Acta Gastro-Enterologica Belgica (1993), 56(3-4, May-Aug), 235-44

The enterochromaffin-like (ECL) cells represent the predominating endocrine cell population in the oxyntic mucosa of the stomach. They are under the influence of gastrin. Recently, a histamine production ... [more ▼]

The enterochromaffin-like (ECL) cells represent the predominating endocrine cell population in the oxyntic mucosa of the stomach. They are under the influence of gastrin. Recently, a histamine production was shown within the secretory granules of ECL cells. ECL cells appear to play a crucial role in the physiology of gastric acid secretion. There are many unknowns concerning the intervention of other trophic factors in addition to gastrin and concerning the receptors located on the cells. ECL cell hyperplasia is a well documented consequence of hypergastrinemia. The latter can result from a gastrinoma or from a reduction of gastric acid secretion related to pernicious anemia or to long-term treatment with antisecretory drugs. [less ▲]

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See detailContingent negative variation: methods and potential interest in headache.
Schoenen, Jean ULg; Timsit-Berthier, M.

in Cephalalgia : An International Journal of Headache (1993), 13(1), 28-32

Contingent negative variation (CNV) is an event-related slow cerebral potential which has been found abnormal in migraine. Its methodology is described. Contrary to other neurophysiological techniques ... [more ▼]

Contingent negative variation (CNV) is an event-related slow cerebral potential which has been found abnormal in migraine. Its methodology is described. Contrary to other neurophysiological techniques, CNV needs special equipment and expertise. On average, CNV amplitude is increased and its habituation is lacking in migraine without aura between attacks, but not in migraine with aura. The sensitivity of CNV as a diagnostic tool is low, but its specificity is high. CNV amplitude normalizes after treatment with beta-blockers. The CNV abnormalities in migraine might be due to hyperreactivity of central catecholaminergic pathways. [less ▲]

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See detailResistance a la secheresse et reponses a l'acide abscissique: analyse d'une approche synthetique.
El-Jaafari, S.; Paul, Roger ULg; Lepoivre, Philippe ULg et al

in Cahiers Agricultures (1993), 2(4),

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See detailLes auteurs latins et les langues étrangères
Rochette, Bruno ULg

in Latomus : Revue d'Etudes Latines (1993), 52

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See detailControl of the illegal administration of natural steroid hormones in urine and tissues of veal calves and in plasma of bulls
Scippo, Marie-Louise ULg; Gaspar, Pol; Degand, Guy ULg et al

in Analytica Chimica Acta (1993), 275(1-2), 57-74

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See detailThiamin and Derivatives as Modulators of Rat Brain Chloride Channels
Bettendorff, Lucien ULg; Hennuy, Benoît ULg; Wins, Pierre et al

in Neuroscience (1993), 52(4), 1009-1017

Several membrane fractions were prepared from rat brain by differential and sucrose density gradient centrifugation. Most fractions took up 36Cl- rapidly at a rate linear with time during the first 30-60 ... [more ▼]

Several membrane fractions were prepared from rat brain by differential and sucrose density gradient centrifugation. Most fractions took up 36Cl- rapidly at a rate linear with time during the first 30-60 s, then the rate progressively slowed down. The lowest rate of uptake was found in the mitochondrial fraction. Oxythiamin partially inhibited 36Cl- uptake in all fractions. In P2 (crude synaptosomal fraction), oxythiamin decreased the initial rate of uptake by 32%, the apparent Ki being 1.5 mM. Thiamin and amprolium were less effective as inhibitors. 4,4'-Diisothiocyanostilbene-2,2'-disulfonic acid (0.1-1 mM) inhibited 36Cl- uptake by 40-50%. In the presence of this compound at a concentration > or = 5 x 10(-4) M, oxythiamin became ineffective. 36Cl- uptake was increased by GABA (0.1 mM) and this effect was antagonized by picrotoxin as expected, but not by oxythiamin. The rate of 36Cl- uptake did not appreciably depend on the external chloride concentration and was unaffected by bumetanide or by replacement of external Na+ by choline. Taken together, these data suggest that the oxythiamin-sensitive 36Cl- influx is essentially diffusional and is not related to the GABA receptor or the Na:K:2Cl co-transport. Partial replacement of external Na+ by K+ or treatment with 0.1 mM veratridine (which should both result in membrane depolarization) increased 36Cl- uptake by 50 and 30% respectively; the inhibitory effect of oxythiamin was enhanced to the same proportion.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailDecision tree approach to power systems security assessment
Wehenkel, Louis ULg; Pavella, Mania ULg

in International Journal of Electric Power and Energy Systems (1993), 15(1), 13-36

An overview of the general decision tree approach to power system security assessment is presented. The general decision tree methodology is outlined, modifications proposed in the context of transient ... [more ▼]

An overview of the general decision tree approach to power system security assessment is presented. The general decision tree methodology is outlined, modifications proposed in the context of transient stability assessment are embedded, and further refinements are considered. The approach is then suitably tailored to handle other specifics of power systems security, relating to both preventive and emergency voltage control, in addition to transient stability. Trees are accordingly built in these various application domains, and their salient features are explored, assessed, compared. Among attractive aspects of the trees, we mention their ability to uncover the intrinsic mechanism governing physical processes, and to provide a clear description in terms of tractable system parameters. Further, their dual, 'attribute space' representation is shown to have complementary possibilities for more refined analysis and, in addition, for sensitivity assessment and control. Overall, the approach is characterized by its great flexibility with respect to tree structure, types of physical parameters driving the phenomena, and classes of potential applications. To illustrate and support the developments,real-world examples are reported, rolatin 9 to transient and voltage stability issues simulated on several power systems. [less ▲]

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See detailCloning of a human GHF-1/Pit-1 cDNA variant
Pernasetti, Flavia; Wera, Stefaan; Belayew, Alexandra et al

in Nucleic Acids Research (1993), 21(15), 3584

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See detailA finite element code for subsidence problems: LAGAMINE
Charlier, Robert ULg; Radu, Jean-Pol ULg; Li, Q. F.

in Bulletin of Engineering Geology & the Environment (1993), 47(1 / avril), 5-11

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See detailMesures quantitatives de l'erythropoiese. Le recepteur soluble de la transferrine.
Beguin, Yves ULg

in Bulletin et Mémoires de l'Académie Royale de Médecine de Belgique (1993), 148(1-2), 100-4105-7

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

Iron transport in plasma is carried out by transferrin, which donates iron to cells through its interaction with a specific membrane receptor. The soluble form of the transferrin receptor has been identified in plasma. Dosage of the soluble receptor represents a simple, reliable, quantitative assay of erythropoiesis, which should replace the standard ferrokinetic measurement. Using this dosage, it is now possible to investigate the pathophysiology of anemia in many conditions, and to analyze the erythropoietic response to treatment with recombinant erythropoietin. [less ▲]

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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 detailLes articles 19 et 93 de la loi relative au crédit à la consommation, obs sous civ. Dinant, 28 juin 1989 et Liège, 26 juin 1992
Biquet, Christine ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (1993)

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See detailLe récepteur NMDA : base moléculaire du mécanisme d’action de la kétamine
Hanon, E.; Gustin, Pascal ULg; Ansay, M.

in Annales de Médecine Vétérinaire (1993), 137

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See detailRole of Neuropeptides in Acetylcholine-Induced Edema in Isolated and Perfused Rabbit Lungs
Delaunois, Annie ULg; Gustin, Pascal ULg; Ansay, Michel ULg

in Journal of Pharmacology and Experimental Therapeutics (The) (1993), 266(2), 483-491

Changes in pulmonary endothelial permeability and in microvascular hemodynamics in response to cumulative concentrations of acetylcholine (ACh) (10(-8) M to 10(-5) M) were investigated in isolated ... [more ▼]

Changes in pulmonary endothelial permeability and in microvascular hemodynamics in response to cumulative concentrations of acetylcholine (ACh) (10(-8) M to 10(-5) M) were investigated in isolated, perfused rabbit lungs. The total pressure gradient was partitioned into four components: arterial, pre- and postcapillary and venous. The capillary filtration coefficient (Kf, c) also was evaluated. ACh caused a significant increase in arterial and precapillary pressures at concentrations higher than 3 x 10(-6) M. The total pressure gradient and precapillary were significantly increased whereas arterial, postcapillary and venous pressure gradient remained unchanged. In papaverine (3 x 10(-4) M)-pretreated lungs, the vasoconstriction was abolished and a concentration-dependent increase in Kf,c was recorded from 10(-8) to 10(-5) M ACh. This reaction was accompanied by pulmonary edema. Atropine, indomethacin, aspirin, ketanserin, clonidine, morphine and (+/-)-CP 96-345, an antagonist of neurokinin NK1 receptors, completely prevented the effects of ACh on Kf,c. In contrast, cromolyn sodium and SR48968, a neurokinin NK2 antagonist, did not inhibit the response to ACh. Terfenadine together with cimetidine had a partially inhibitory effect. Changes in the Kf, c similar to those observed with ACh were induced by capsaicin (10(-4) M) by exogenous substance P (10(-7) M) and by 5-hydroxytryptamine (5-HT) (10(-4) M). The effects of SP were inhibited by aspirin, (+/-)-CP 96,345 and ketanserin, but not by atropine and antihistaminics. 5-HT effects were prevented by aspirin and not by (+/-)-CP 96,345. It was concluded that ACh-induced pulmonary edema was due to an increase in the capillary filtration coefficient.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailL'ostéoporose
Reginster, Jean-Yves ULg

in Medipractice Digest (1993)

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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 detailDynamics of mitotic activity and expression of viral proteins gp51 and p24 of Bovine Leukemia Virus producing cells.
Roussev, Roussi; Polianova, M.; Portetelle, Daniel ULg et al

in Folia Biologica (1993), 39

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See detailL'histoire de Méléagre : plaidoyer pour une analyse de l'ensemble du mythe
Renaud, Jean-Michel ULg

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

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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 detailAnalyse des comportements d'entraîneurs de volley-ball pendant des rencontres officielles
Cloes, Marc ULg; Delhaes, Jean-Pierre; Piéron, Maurice

in Sport (1993), 141(1), 16-25

L'observation systématique des comportements des entraîneurs sportifs a connu un réel développement au cours de la dernière décennie. Les études relevées dans la littérature spécialisée peuvent se ... [more ▼]

L'observation systématique des comportements des entraîneurs sportifs a connu un réel développement au cours de la dernière décennie. Les études relevées dans la littérature spécialisée peuvent se regrouper selon leurs objectifs: (1) l'analyse descriptive des comportements d'entraîneurs et de sportifs, parfois de très haut niveau; (2) la comparaison de situations pédagogiques, notamment en observant une même personne exerçant les fonctions d'entraîner et d'enseignant; (3) la comparaison des interventions des entraîneurs en fonction du niveau d'habileté des sportifs qu'ils dirigent; (4) la comparaison du comportement des entraîneurs en fonction des succès ou des échecs de leur équipe. ... [less ▲]

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See detailEl analisis estructural semi-rigido: definicion, camp y mood de applicacion
Jaspart, Jean-Pierre ULg; Maquoi, René ULg

in Construcciones Metalicas y Caldereria (1993), 28

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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 detailLasfe (CIL IV 2319 l) et quelques autres exemples d’usage abusif de l’épigraphie en phonétique historique
Purnelle, Gérald ULg

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

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See detailStructure of triosephosphate isomerase from Escherichia coli determined at 2.6 A resolution
Noble, M. E.; Zeelen, J. P.; Wierenga, R. K. et al

in Acta Crystallographica Section D-Biological Crystallography (1993), 49(Pt 4), 403-17

The structure of triosephosphate isomerase (TIM) from the organism Escherichia coli has been determined at a resolution of 2.6 A. The structure was solved by the molecular replacement method, first at 2.8 ... [more ▼]

The structure of triosephosphate isomerase (TIM) from the organism Escherichia coli has been determined at a resolution of 2.6 A. The structure was solved by the molecular replacement method, first at 2.8 A resolution with a crystal grown by the technique of hanging-drop crystallization from a mother liquor containing the transition-state analogue 2-phosphoglycolate (2PG). As a search model in the molecular replacement calculations, the refined structure of TIM from Trypanosoma brucei, which has a sequence identity of 46% compared to the enzyme from E. coli, was used. An E. coli TIM crystal grown in the absence of 2PG, diffracting to 2.6 A resolution, was later obtained by application of the technique of macro-seeding using a seed crystal grown from a mother liquor without 2PG. The final 2.6 A model has a crystallographic R factor of 11.9%, and agrees well with standard stereochemical parameters. The structure of E. coli TIM suggests the importance of residues which favour helix initiation for the formation of the TIM fold. In addition, TIM from E. coli shows peculiarities in its dimer interface, and in the packing of core residues within the beta-barrel. [less ▲]

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See detailReturn interval, firm size and systematic risk on the Dutch stock market
Corhay, Albert ULg; Tourani-Rad, Alireza

in Review of Financial Economics (1993), 2(2), 19-28

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See detailExperts et novices face à un circuit simulé sur ordinateur
Lafontaine, Dominique ULg; Blondin, Christiane ULg; Closset, Jean-Louis ULg

in Education et Recherche (1993), 1

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See detailLa collaboration entre les CPAS et autres institutions d'Aide Sociale
Gavray, Claire ULg; Huvelle, P.

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1993), 1-2

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See detailDémocratie, discussion et écriture chez Habermas et Lyotard
Delruelle, Edouard ULg

in Cahiers Internationaux de Symbolisme (1993), 74-76

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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 detailMuscles rotateurs d'épaule et isocinétisme
Croisier, Jean-Louis ULg; Mommer, R.; Crielaard, Jean-Michel ULg

in Médecine et Hygiène (1993), 51

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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 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 detailPlasticity of Developing and Adult Dorsal Root Ganglion Neurons as Revealed in Vitro
Delree, P.; Ribbens, Clio ULg; Martin, Didier ULg et al

in Brain Research Bulletin (1993), 30(3-4), 231-7

We review recent data on the plasticity of dorsal root ganglion (DRG) neurons as revealed during cultivation in vitro. Some experiments on cultured developing DRG neurons and on adult DRG neurons in vivo ... [more ▼]

We review recent data on the plasticity of dorsal root ganglion (DRG) neurons as revealed during cultivation in vitro. Some experiments on cultured developing DRG neurons and on adult DRG neurons in vivo are also mentioned. Cultured developing and adult DRG neurons can be switched from an apolar to a multipolar phenotype by fetal calf serum or fibronectin. The effect is concentration dependent and occurs through an early modification of cell-substratum interaction. Adult DRG neurons synthesize and release within hours after injury TGF beta-1, which is a mitogen and a differentiation factor for Schwann cells. Finally, adult DRG neurons express in vitro neurotransmitters that are not expressed in vivo. This neurotransmitter plasticity can be modulated in vitro by some growth factors and in vivo by distal or proximal axotomy. [less ▲]

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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 detailIn vitro susceptibility of Clostridium perfringens isolated from farm animals to growth-enhancing antibiotics.
Devriese, L. A.; Daube, Georges ULg; Hommez, J. et al

in Journal of Applied Bacteriology (1993), 75

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See detailEchec des élèves, échec de l'école ?
Crahay, Marcel ULg

in Recherche en Education. Théorie & Pratique (1993), 11-12

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See detailMonoclonal-Antibodies To Bovine Growth-Hormone Potentiate Hormonal Activity In-Vivo By Enhancing Growth-Hormone Binding To Hepatic Somatogenic Receptors
Massart, Serge; Maiter, D.; Portetelle, Daniel ULg et al

in Journal of Endocrinology (1993), 139(3),

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See detailDe lugebere droom van W.F. Hermans. Hermans'mythologie in het licht van A. Schopenhauer
Yans, Baudoin ULg

in Spiegel der Letteren (1993), (1), 47-61

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See detailSyngeneic Grafting of Adult Rat Drg-Derived Schwann Cells to the Injured Spinal Cord
Martin, Didier ULg; Schoenen, Jean ULg; Delree, P. et al

in Brain Research Bulletin (1993), 30(3-4), 507-14

A subdural inflatable micro-balloon was used to induce closed traumatic contusion to adult rat spinal cord. This spinal cord injury model was associated with reproducible and graded neurological deficits ... [more ▼]

A subdural inflatable micro-balloon was used to induce closed traumatic contusion to adult rat spinal cord. This spinal cord injury model was associated with reproducible and graded neurological deficits and histopathological alterations. At various delays after injury, transplantations of syngeneic adult cultured dorsal root ganglion-derived Schwann cells were performed into the spinal cord lesion. The transplants were well integrated and reduced the microcystic posttraumatic cavitation as well as the gliosis. Schwann cells transplants were invaded by numerous regenerating neurites most of which, based upon their neurotransmitter contents, seem to originate from the dorsal root ganglion. [less ▲]

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See detailUne nouvelle approche des echanges gazeux entre couverts vegetaux et atmosphere. La correlation de turbulences.
Aubinet, Marc ULg

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

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See detailDu bon steak et du bon lait: d'abord interroger le naturel et en percer tous ces secrets
Renaville, Robert ULg; Burny, Arsène; Portetelle, Daniel ULg

in Agricontact (1993), 255

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See detailLes aquifères crayeux en Belgique
Dassargues, Alain ULg; Monjoie, Albéric ULg

in Hydrogéologie (1993), (2), 135-145

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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 detailQuantitative estimation of chimerism in mice using microsatellite markers
Delhaise, F.; Zhao, X.; Dessy, F. et al

in Molecular Reproduction and Development (1993), 34(2), 127-132

An embryonic stem cell line was established from SV129 mouse blastocysts and used to generate chimeric mice by injection into OF1 blastocysts; 18 out of the 30 resulting offspring appeared chimeric as ... [more ▼]

An embryonic stem cell line was established from SV129 mouse blastocysts and used to generate chimeric mice by injection into OF1 blastocysts; 18 out of the 30 resulting offspring appeared chimeric as judged from their coat color patterns, and 3 of the 13 males proved to be germ-line chimeras as they transmitted the SV129 agouti phenotype to all or part of their offspring. The degree of chimerism of these males was evaluated for different tissues using polymorphic microsatellite markers amplified by the polymerase chain reaction. It was shown that these new markers can be effectively used to quantitatively estimate levels of chimerism. The CKMM (creatine kinase, muscle) microsatellite system was used to distinguish the SV129 from the OF1 genotype. In all performed tests, the correlation between DNA ratio and signal ratio, expressed as a base 10 logarithm, was shown to exceed or equal 0.98 for known DNA ratios (SV129/OF1) ranging from 1/99 to 99/1. Linear calibration methods were used to predict the % SV129 DNA of a test sample based on the obtained signal ratio. The accuracy of the prediction was evaluated by performing repeated measurements. Differences among three repeated estimates ranged from 2 to 17% for a given sample. Microsatellite systems should be very useful to monitor chimerism involving strains that can not be discerned with coat color or biochemical markers. This will be particularly important when ES methodology becomes available in species other than mice. [less ▲]

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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 detailThiamine Triphosphate Activates an Anion Channel of Large Unit Conductance in Neuroblastoma Cells
Bettendorff, Lucien ULg; Kolb, Hans-Albert; Schoffeniels, E.

in Journal of Membrane Biology (1993), 136(3), 281-8

In neuroblastoma cells, the intracellular thiamine triphosphate (TTP) concentration was found to be about 0.5 microM, which is several times above the amount of cultured neurons or glial cells. In inside ... [more ▼]

In neuroblastoma cells, the intracellular thiamine triphosphate (TTP) concentration was found to be about 0.5 microM, which is several times above the amount of cultured neurons or glial cells. In inside-out patches, addition of TTP (1 or 10 microM) to the bath activated an anion channel of large unit conductance (350-400 pS) in symmetrical 150 mM NaCl solution. The activation occurred after a delay of about 4 min and was not reversed when TTP was washed out. A possible explanation is that the channel has been irreversibly phosphorylated by TTP. The channel open probability (Po) shows a bell-shaped behavior as a function of pipette potential (Vp). Po is maximal for -25 mV < Vp < 10 mV and steeply decreases outside this potential range. From reversal potentials, permeability ratios of PCl/PNa = 20 and PCl/Pgluconate = 3 were estimated. ATP (5 mM) at the cytoplasmic side of the channel decreased the mean single channel conductance by about 50%, but thiamine derivatives did not affect unit conductance; 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid (0.1 mM) increased the flickering of the channel between the open and closed state, finally leading to its closure. Addition of oxythiamine (1 mM), a thiamine antimetabolite, to the pipette filling solution potentiates the time-dependent inactivation of the channel at Vp = -20 mV but had the opposite effect at +30 mV. This finding corresponds to a shift of Po towards more negative resting membrane potentials. These observations agree with our previous results showing a modulation of chloride permeability by thiamine derivatives in membrane vesicles from rat brain. [less ▲]

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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 detailRespiratory response to abdominal and rib cage muscle paralysis in dogs.
Brichant, Jean-François ULg; Gorini, Massimo; De Troyer, André

in Journal of Applied Physiology (Bethesda, Md. : 1985) (1993), 74(5), 2309-17

To assess the respiratory response to abdominal and rib cage muscle paralysis, we measured tidal volume, esophageal and gastric pressures, arterial blood gases, and the electromyogram (EMG) of the ... [more ▼]

To assess the respiratory response to abdominal and rib cage muscle paralysis, we measured tidal volume, esophageal and gastric pressures, arterial blood gases, and the electromyogram (EMG) of the diaphragm during progressive epidural anesthesia (lidocaine 2%) in 35 supine anesthetized dogs. The EMG activity of the diaphragm was measured with fine-wire electrodes; the abdominal cavity was thus left intact. Paralysis of the abdominal muscles alone did not produce any alterations. In contrast, when all rib cage muscles were also paralyzed, there were substantial increases in the peak height and the rate of rise of diaphragmatic EMG activity that were associated with a decrease in tidal volume and an increase in arterial PCO2 (PaCO2); swings in transdiaphragmatic pressure, however, were unchanged. The increased diaphragmatic activation due to rib cage muscle paralysis persisted after bilateral cervical vagotomy and was well explained by the increased PaCO2. These observations indicate that in the dog 1) the rib cage muscles contribute significantly to tidal volume, and their paralysis causes, through the increased hypercapnic drive, a compensatory increase in diaphragmatic activation; and 2) the rib cage inspiratory muscles enhance the diaphragm's ability to generate pressure during breathing. [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 detailEscherichia coli producing CNF1 and CNF2 cytotoxins in animals with different disorders
Pohl, P.; Oswald, E.; Van Muylem, K. et al

in Veterinary Research (1993), 24

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See detailL'âge est-il un facteur limitant pour la chirurgie carotidienne?
Van Damme, Hendrik ULg; Smitz, Simon ULg; Albert, Adelin ULg et al

in Journal des Maladies Vasculaires (1993), 18(3), 245-53

To evaluate the role of carotid surgery in elderly patients 75 years and older, we reviewed 912 carotid endarterectomies performed on 806 patients between 1987 and 1990. There were 151 patients (19% of ... [more ▼]

To evaluate the role of carotid surgery in elderly patients 75 years and older, we reviewed 912 carotid endarterectomies performed on 806 patients between 1987 and 1990. There were 151 patients (19% of the whole series) aged 75 years and older (160 endarterectomies, group A), including 29 octogenarians, vs 655 patients under 75 years of age (group B). There were more women in the elderly age group (44%) than in the younger one (38%). Symptoms, risk factors, operative outcome and follow up data of the two groups were compared. The risk profile was similar for the two age groups, with exception for coronary heart disease, less frequent in the older patient group (25% had previous infarction vs 44%). Indication for carotid endarterectomy was different in the two age groups: 41% of group A underwent prophylactic thrombendarterectomy for high degree stenosis, while only 30% of group B had asymptomatic carotid disease. In group A, 6% of the patients had carotid endarterectomy after recovering from a mild stroke, vs 2% in group B. Angiography revealed bilateral carotid disease in 59% of the group A patients (including 15% with contralateral occlusion) vs 40% in group B. Operative mortality was 1.5% for the younger age group vs 2.5% for the older age group. The cause of death was cardiac in 60%. A follow up is available for all patients who benefited carotid endarterectomy since 1976, including 180 patients aged 75 years or older.(ABSTRACT TRUNCATED AT 250 WORDS) [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 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 detailFructose utilization during exercise in men: rapid conversion of ingested fructose to circulating glucose.
Jandrain, Bernard ULg; Pallikarakis, N.; Normand, S. et al

in Journal of Applied Physiology (Bethesda, Md. : 1985) (1993), 74(5), 2146-54

The aim of the present study was to compare the metabolic fate of repeated doses of fructose or glucose ingested every 30 min during long-duration moderate-intensity exercise in men. Healthy volunteers ... [more ▼]

The aim of the present study was to compare the metabolic fate of repeated doses of fructose or glucose ingested every 30 min during long-duration moderate-intensity exercise in men. Healthy volunteers exercised for 3 h on a treadmill at 45% of their maximal oxygen consumption rate. "Naturally labeled" [13C]glucose or [13C]fructose was given orally at 25-g doses every 30 min (total feeding: 150 g; n = 6 in each group). Substrate utilization was evaluated by indirect calorimetry, and exogenous sugar oxidation was measured by isotope ratio mass spectrometry on expired CO2. Results were corrected for baseline drift in 13C/12C ratio in expired air due to exercise alone. Fructose conversion to plasma glucose was measured combining gas chromatography and isotope ratio mass spectrometry. Most of the ingested glucose was oxidized: 81 +/- 4 vs. 57 +/- 2 g/3 h for fructose (2P < 0.005). Exogenous glucose covered 20.8 +/- 1.4% of the total energy need (+/- 6.7 MJ) compared with 14.0 +/- 0.6% for fructose (2P < 0.005). The contribution of total carbohydrates was significantly higher and that of lipids significantly lower with glucose than with fructose. The blood glucose response was similar in both protocols. From 90 to 180 min, 55-60% of circulating glucose was derived from ingested fructose. In conclusion, when ingested repeatedly during moderate-intensity prolonged exercise, fructose is metabolically less available than glucose, despite a high rate of conversion to circulating glucose. [less ▲]

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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 detailEffects of a 1-year treatment with a low-dose combined oral contraceptive containing ethinyl estradiol and cyproterone acetate on glucose and insulin metabolism.
Scheen, André ULg; Jandrain, Bernard ULg; Humblet, Dominique ULg et al

in Fertility and Sterility (1993), 59(4), 797-802

OBJECTIVE: To study the effects of the slightly estrogen-dominant monophasic low-dose oral contraceptive (OC) Diane-35 (Schering AG, Berlin, Germany) (35 micrograms ethinyl estradiol [EE2] + 2 mg ... [more ▼]

OBJECTIVE: To study the effects of the slightly estrogen-dominant monophasic low-dose oral contraceptive (OC) Diane-35 (Schering AG, Berlin, Germany) (35 micrograms ethinyl estradiol [EE2] + 2 mg cyproterone acetate, a 17 alpha-hydroxyprogesterone derivative [17-OHP]) on glucose and insulin metabolism. DESIGN: Seven healthy young women were investigated by using the euglycemic hyperinsulinemic glucose clamp technique (insulin delivery rate = 100 mU/kg per hour for 120 minutes). This test was performed, after an overnight fast, during the last 7 days of a spontaneous cycle and within the last 5 days of pill intake during the sixth and twelfth cycle of a continuous treatment with Diane-35 in each subject. RESULTS: The three indexes measuring the insulin-induced glucose disposal during the clamp (glucose infusion rate, glucose metabolic clearance rate, and glucose infusion rate divided by plasma insulin plateau levels) were not significantly affected by Diane-35. In contrast, the metabolic clearance rate of the exogenous insulin infused during the clamp tended to be slightly increased with Diane-35 (significant after 6 but not after 12 cycles). CONCLUSION: These results suggest that a 1-year treatment with the OC Diane-35, which contains EE2 + a 17-OHP rather than a 19-nortestosterone derivative as the progestogen compound, does not significantly alter peripheral (presumably muscular) insulin sensitivity but slightly increases insulin (presumably hepatic) clearance. [less ▲]

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See detailRadiative Lifetime Measurements in Dy II and the Solar Abundance of Dysprosium
Biémont, Emile ULg; Löwe, R. M.

in Astronomy and Astrophysics (1993), 273

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See detailEffects of Capsaicin on the Endothelial Permeability in Isolated and Perfused Rabbit Lungs
Delaunois, Annie ULg; Gustin, Pascal ULg; Ansay, Michel ULg

in Fundamental & Clinical Pharmacology (1993), 7(2), 81-91

Changes in pulmonary endothelial permeability and in microvascular hemodynamics in response to capsaicin (10(-4) M) were investigated in isolated, perfused rabbit lungs. Blood-free perfusate was ... [more ▼]

Changes in pulmonary endothelial permeability and in microvascular hemodynamics in response to capsaicin (10(-4) M) were investigated in isolated, perfused rabbit lungs. Blood-free perfusate was recirculated through ventilated lungs in an isogravimetric state, under zone III conditions with a constant flow. Using the occlusions method, the total pressure gradient between the arterial and the venous levels (delta Pt) was partitioned into four components: arterial (delta Pa), pre-(delta Pa') and post-(delta Pv') capillary, and venous (delta Pv). The capillary filtration coefficient (Kf,c) was evaluated by measuring the amount of fluid filtering through the endothelium when arterial and venous pressures were suddenly increased. Capsaicin caused no changes in the vascular pressures at any level of the pulmonary circulation but induced a significant 3-fold increase in the Kf,c (P < 0.05). This reaction was accompanied by pulmonary oedema. The mechanisms involved in the permeability changes were investigated by testing the capacity of different drugs to block the response to capsaicin. Clonidine (10(-7) M to 10(-5) M), morphine (10(-6) M), aspirin (10(-3) M), ketanserin (10(-8) M) and (+/)- CP 96,345 (10(-6) M), an antagonist of neurokinin NK1 receptor, completely prevented the effects of capsaicin on the Kf,c. In contrast, terfenadine (10(-7)) together with cimetidine (10(-5) M) had no protective effect against capsaicin. It was concluded that capsaicin-induced pulmonary oedema was due to an increase in the capillary filtration coefficient and not to hemodynamic changes. This alteration in the endothelium permeability is mediated by the release of endogenous peptides from C-fibers upon the action of capsaicin and subsequent activation of NK1 receptors, probably by substance P. Moreover, 5-hydroxytryptamine receptors and arachidonic acid derivates are also involved in this reaction [less ▲]

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See detailLinks between Egyptian and Greek Medicine
Marganne, Marie-Hélène ULg

in Forum (1993), 3(5), 35-43

Given the present state of our knowledge, the question about the links between Egyptian and Greek medicine is far from being resolved. Some convergences can in fact be detected, but when you study them ... [more ▼]

Given the present state of our knowledge, the question about the links between Egyptian and Greek medicine is far from being resolved. Some convergences can in fact be detected, but when you study them further, you will find that they reveal a loan, or a simple coincidence, or else a false interpretation of the sources. At the end of the sixth century BC, Pharaonic medicine was outclassed and influenced little by little by Greek medicine. Lastly, the Coptic medical treatises, composed in Egyptian language, but written in Greek characters, combine some Greek and finally Arabic borrowings. [less ▲]

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See detailEffects of Neurochemical Lesions of the Preoptic Area on Male Sexual Behavior in the Japanese Quail
Bailhache, T.; Surlemont, C.; Balthazart, Jacques ULg

in Brain Research Bulletin (1993), 32(3), 273-83

Two experiments were carried out during which the noradrenergic neurotoxin, 5-amino-2,4-dihydroxy-alpha-methylphenylethylamine (5-ADMP) was applied to the brain of quail in order to evaluate the role of ... [more ▼]

Two experiments were carried out during which the noradrenergic neurotoxin, 5-amino-2,4-dihydroxy-alpha-methylphenylethylamine (5-ADMP) was applied to the brain of quail in order to evaluate the role of the noradrenergic system in the control of male copulatory behavior. In the first experiment, the ICV injection of 5-ADMP slightly enhanced the sexual behavior observed in testosterone (T)-treated castrated male quail. This brings additional support to the notion that norepinephrine tonically inhibits male copulatory behavior in quail. In the second experiment, 5-ADMP implanted directly into the preoptic area disrupted the restoration by T of copulatory behavior in castrated quail and, at the same time, produced a brain lesion that partly destroyed the sexually dimorphic medial preoptic nucleus, a previously established site of T action on behavior. These lesions produced by a high (presumably too high) concentration of neurotoxin provided an independent confirmation of effects previously observed after electrolytic lesions. Correlation analyses also confirmed that the medial part of the POM just rostral to the anterior commissure is more closely associated with copulatory behavior and may, therefore, represent a key center for steroid action on this behavior. [less ▲]

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See detailInventaire préliminaire sur le patrimoine campanaire de l'église Saint-Servais à Liège
Marganne, Marie-Hélène ULg; Mélard, Marc

in Bulletin de la Société Royale Le Vieux-Liège (1993), 261

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See detailEvaluation isocinétique des genoux ligamentaires en pré et postopératoire
Croisier, Jean-Louis ULg; Delcour, J. P.; Dupont, Géraldine ULg et al

in Lettre de Médecine Physique et de Réadaptation (1993), 29

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See detailCommon stochastic trends in European stock markets
Corhay, Albert ULg; Tourani-Rad, Alireza; Urbain, Jean-Pierre ULg

in Economics Letters (1993), 42(4), 385-390

The objective of the paper is to investigate whether price indices of different European stock markets display a common long-run trending behaviour. Using cointegration analysis, we provide empirical ... [more ▼]

The objective of the paper is to investigate whether price indices of different European stock markets display a common long-run trending behaviour. Using cointegration analysis, we provide empirical evidence of common stochastic trends among five important European stock markets over the period 1975-1991. [less ▲]

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See detailLa ferritine érythrocytaire
Guillemin, Ch; Revenant, M. C.; Vernet, V. et al

in Annales de Biologie Clinique (1993), 51

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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 detailMicroencapsulation by Coacervation of Poly(lactide-co-glycolide)-II:Encapsulation of a Dispersed Aqueous Phase
Nihant, Nicole; Stassen, S; Grandfils, Christian ULg et al

in polymer International (1993), 32

This paper is related to the phase separation of different copolyesters of lactides and glycolide solutions induced by the addition of silicone oil in order to promote microencapsulation of proteins. This ... [more ▼]

This paper is related to the phase separation of different copolyesters of lactides and glycolide solutions induced by the addition of silicone oil in order to promote microencapsulation of proteins. This coating process can be divided in three successive steps: phase separation of the coating polymer; adsorption of the coacervate droplets around the drugs phase, and microcapsule solidification. This paper focuses on the physico-chemical analysis of the second step. The knowledge of the interfacial tensions between the three liquid phases allows understanding of the microscopic evolution of the phase separation medium. [less ▲]

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See detailonce a day administration of amikacine in neonates: assessment of nephrotoxicity and ototoxicity
Battisti, Oreste ULg; Langhendries, J. P.; Bertrand, J. M. et al

in Developmental Pharmacology and Therapeutics (1993), 20

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See detailLa production des noms propres
Brédart, Serge ULg

in Revue de Neuropsychologie (1993), 3

Detailed reference viewed: 29 (2 ULg)
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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 detailEffect of the vector-axial-vector coupling on the vector-meson modes
Jaminon, Martine ULg; Mendez Galain, Ramon

in Nuclear Physics A (1993), 564

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See detailDensitometric Determination of Salicin in Willow Stem Bark
Poukens-Renwart, Pascale; Tits, Monique ULg; Angenot, Luc ULg

in Journal of Planar Chromatography (1993), 6(november-december), 434-437

Most of the salicin present in willow stem bark occurs as labile glycosides (e.g. salicin, salicortin, 2-O'-acetylsalicortin, 3-O'-acetylsalicortin, tremulacin and fragilin). On alkaline hydrolysis, these ... [more ▼]

Most of the salicin present in willow stem bark occurs as labile glycosides (e.g. salicin, salicortin, 2-O'-acetylsalicortin, 3-O'-acetylsalicortin, tremulacin and fragilin). On alkaline hydrolysis, these acylated derivatives decompose to salicin; in this way, the total amount of salicin can be determined. A HPTLC method has been developed for the quantitative determination of salicin in stem bark before and after alkaline hydrolysis. The mobile phase used for the separation is a modification of one described in the literature. a double or triple migration is necessary to separate salicin from other components of the extract. The results have been compared with those obtained after bidimensional chromatography using two phases described for the quantitative evaluation of salicin. to check that separation was complete, the spectrum of salicin obtained from willow extracts was superimposed on that of a salicin standard.Quantification was performed at lambda = 270nm, the wavelenght of maximum absorption in the IV spectrum of salicin. [less ▲]

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See detailReevaluation by Image Analysis of the Effects of Fibroblasts, Fibronectin or Laminin Upon Colony Formation in Mouse Lungs by B16 Melanoma Cells
Coucke, P. H.; Lambertz, M.; Baramova, E. N. et al

in Invasion & Metastasis (1993), 13(4), 201-11

A recently described personal method based on image analysis of histological sections was used in order to quantify lung colony formation by B16 melanoma cells injected intravenously into the mouse. These ... [more ▼]

A recently described personal method based on image analysis of histological sections was used in order to quantify lung colony formation by B16 melanoma cells injected intravenously into the mouse. These tumor cells were preincubated in vitro either with fibronectin (FN), laminin (LN) or fibroblasts (FB), which are implicated in the process of invasion and metastasis. Thanks to this method, a more accurate analysis of lung colonies (section area and number) formed by tumor cells was realized. By image analysis, we show that when FB were mixed with B16 cells, a drastic increase of tumor sections number and area was induced. LN increased the tumor sections area, but not their number. No effect of FN on B16 cells was observed. LN and FN promoted tumor anchorage in the depth of the lungs while FB reduced the latter. These facts could explain the contradictory results obtained by simply counting macroscopically superficial lung colonies. When cultured in vitro, these B16 melanoma cells did not produce any type of IV collagenase, either alone or in the presence of LN or FN, but in cocultures (B16 with 3T3) and in fibroblasts cultures, this enzyme was present. This could explain, among other factors, why the rate of invasiveness exerted by B16 cells is higher when the latter are coinjected with FB. [less ▲]

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See detailLa descendance de celt. *AKARNOS en wallon
Boutier, Marie-Guy ULg

in Revue de Linguistique Romane (1993)

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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 detailRole du systeme dopaminergique dans la depression: correlats cliniques du test a l'apomorphine.
Pitchot, William ULg; Gonzalez Moreno, Antonio; Hansenne, Michel ULg et al

in Acta Psychiatrica Belgica (1993), 93 Spec No

Disturbances in dopaminergic neurotransmission seem to play an important role in biochemical mechanisms involved in depressive disorders. The study of the growth hormone (GH) response to apomorphine, a ... [more ▼]

Disturbances in dopaminergic neurotransmission seem to play an important role in biochemical mechanisms involved in depressive disorders. The study of the growth hormone (GH) response to apomorphine, a dopaminergic agonist, provides an indirect index of dopaminergic neurotransmission at the postsynaptic level. In the present study, we assessed the role of the dopaminergic system in some psychopathological dimensions in depression: personality dimensions, suicidal behavior, psychomotor disturbances and dichotomy unipolar/bipolar. Our studies included major depressed inpatients matched for gender, age and, in the case of women, menopausal status. Our results show that dopaminergic disturbances are related to social introversion and anxiety according to dopaminergic hypothesis of schizophrenic disorders and dopaminergic hyperactivity hypothesis of anxiety disorders. A blunted GH response to apomorphine could be considered as a biological marker of suicidal behavior. Moreover motor retardation appeared to be in relationship with dopaminergic disturbances. Finally, the dopaminergic system did not appear to play a significant role in the dichotomy unipolar/bipolar. The results show the interest of the apomorphine test in the assessment of the relationship between biochemical disturbances and clinical correlates. [less ▲]

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See detailA model for the origin and petrogenesis of the red stromatactis limestone of Paleozoic carbonate mounds
Bourque, P. A.; Boulvain, Frédéric ULg

in Journal of Sedimentary Petrology (1993), 63(4), 607-619

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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 detailContribution à l'étude des effets de l'exposition à des champs magnétiques 50 Hz sur certains paramètres neuropsychologiques et neuroendocriniens
Crasson, Marion ULg; Timsit-Berthier, Martine; Legros, Jean-Jacques ULg

in Psychologie Médicale (1993), 25(13), 1341-1346

Depuis une trentaine d'années, l'exposition des populations industrialisées aux champs électromagnétiques 50/60 Hz n'a cessé de susciter des polémiques concernant ses éventuels effets nocifs. Cette étude ... [more ▼]

Depuis une trentaine d'années, l'exposition des populations industrialisées aux champs électromagnétiques 50/60 Hz n'a cessé de susciter des polémiques concernant ses éventuels effets nocifs. Cette étude préliminaire a été réalisée avec un appareillage original, qui génère des champs magnétiques comparables à ceux rencontrés dans la vie quotidienne. Deux groupes de 10 volontaires en bonne santé ont participé à cette recherche, le premier réellement exposé à un champ d'induction magnétique de 142 microtesla, 50 Hz, pendant une demi-heure, le deuxième exposé de manière simulée. Nos résultats montrent que le champ magnétique n'engendre aucun effet perceptible mais qu'il provoque une légère modification de certains paramètres psychologiques (humeur, attention visuelle). [less ▲]

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See detailViolences des jeunes : à l'école et ailleurs ?
Born, Michel ULg; Gavray, Claire ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1993), 6

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See detailProductive Performance of the French Insurance Industry
Fecher-Bourgeois, Fabienne ULg; Kessler, D.; Perelman, Sergio ULg et al

in Journal of Productivity Analysis (1993), (4), 77-93

The purpose of this paper is to provide for both life and non-life insurance an assessment of the relative productive performance of French companies. We use parametric and nonparametric approaches to ... [more ▼]

The purpose of this paper is to provide for both life and non-life insurance an assessment of the relative productive performance of French companies. We use parametric and nonparametric approaches to construct a frontier to be used as a yardstick of productive efficiency. Our data basis covers 84 life and 243 non-life companies for the period 1984-1989. The main findings show a high correlation between parametric and nonparametric results and a wide dispersion in the rates of inefficiency across companies. This dispersion can be reduced when controlling for variations in scale, ownership, distribution, reinsurance, and claims ratios. [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 detailDe la perversité des comptes rendus
Winand, Jean ULg

in Göttinger Miszellen (1993), 134

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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 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

Detailed reference viewed: 44 (1 ULg)