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See detailNature of the late potentials and F-ratio values in dogs
Poncelet, Luc; Balligand, Marc ULg

in Research in Veterinary Science (1991)

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See detailLes applications informatiques des années 90 et leurs implications sur les réseaux de communication
Leduc, Guy ULg

in Bulletin Scientifique de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore (1991), 2

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See detailNUTRITIONAL-STATUS OF DECLINING SPRUCE (PICEA-ABIES (L) KARST) - EFFECT OF SOIL ORGANIC-MATTER TURNOVER RATE
Hambuckers, Alain ULg; Remacle, Jean ULg

in Water, Air & Soil Pollution (1991), 59(1-2), 95-106

Foliar analysis was undertaken in two plots of Picea abies (L.) Karst., located in a watershed of Haute Ardenne, Belgium, in order to estimate the decline of the trees. Apart from a general Mg deficiency ... [more ▼]

Foliar analysis was undertaken in two plots of Picea abies (L.) Karst., located in a watershed of Haute Ardenne, Belgium, in order to estimate the decline of the trees. Apart from a general Mg deficiency, the concentrations of the needles were in the same range as those determined in other European stands. Comparisons between healthy and declining trees within each plot revealed a general pattern of decline similar to that observed elsewhere in Western Europe. This was shown as lower Ca, Mg, Zn concentrations and water content and higher N and P concentrations of the needles collected from declining trees. It is concluded that this decline could be due to N over fertilization by the atmospheric deposition. The difference of decline between the two plots was attributed to the turnover rate of the soil organic layer which was less intensive in the most damaged plot. [less ▲]

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See detailLe type toponymique "mouchenière"
Boutier, Marie-Guy ULg

in Nouvelle Revue d'Onomastique (1991), 17/18

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See detailChoix de l'habitat par le lynx européen et par sa proie principale, le chevreuil, dans un milieu de moyenne montagne (massif vosgien). 1. le cas du chevreuil
Anciaux, Marie Rose; Herrenschmidt, Véronique; Libois, Roland ULg

in Cahiers d'Ethologie (1991), 11(1), 51-66

Since 1983, 12 lynxes were reintroduced in the forests of Eastern France (massif des Vosges). They use their habitat in a patchy way. In this part, the authors deal with the ecological distridution of ... [more ▼]

Since 1983, 12 lynxes were reintroduced in the forests of Eastern France (massif des Vosges). They use their habitat in a patchy way. In this part, the authors deal with the ecological distridution of their main prey, the roe deer. It is to see to what extent the prey distribution can influence the predator habits. Roe deer observations were made during 4 consecutive springs and 3 consecutive summers and related with the environmental characteristics of the forest plots: physiographical factors, vegetation type, vegetation structure, relative cover of vegetation layer... Eight discriminant analysis were performed. They suggest that in our study area, the roe deer spatial distribution is mainly influenced by the altitude and the non deciduous tree cover. Other factors of less importance are the global tree cover and the understory (scrub layer). Moreover it seems that the presence of the red deer can also influence the roe deer habitat utilization. [less ▲]

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See detailLes inventaires forestiers nationaux en Europe: tentative de synthèse.
Lecomte, Hugues; Rondeux, Jacques ULg

in Silva Belgica (1991), 98(4), 13-19

Dans de nombreux pays, la forêt est une ressource naturelle importante et au niveau mondial, les problèmes d'approvisionnement en bois se posent avec de plus en plus d'acuité. Le développement des ... [more ▼]

Dans de nombreux pays, la forêt est une ressource naturelle importante et au niveau mondial, les problèmes d'approvisionnement en bois se posent avec de plus en plus d'acuité. Le développement des populations et de leurs besoins en bois a fait prendre conscience de la nécessité de gérer ce patrimoine de façon responsable, sous peine de le voir s'appauvrir, voire même disparaître dans des proportions inquiétantes. Assez paradoxalement, ce sont les pays riches en "or vert" qui ont innové dans ce domaine (Suède, Finlande, Canada,...). Mais comment gérer une ressource aussi étendue et diversifiée sans se doter des moyens de la connaître ? A ce titre, un inventaire réalisé à l'échelle des nations est devenu indispensable. Dans les lignes qui suivent, nous tenterons de faire le point sur les approches méthodologiques propres aux inventaires forestiers nationaux (ou régionaux) et nous évoquerons différentes réalisations concrètes actuellement en vigueur dans plusieurs pays, principalement ceux à tradition forestière. [less ▲]

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See detailLe traitement pharmacologique de l'obésité.
PAQUOT, Nicolas ULg; SCHEEN, André ULg; Lefebvre, P.

in Médecine et Hygiène (1991), 49

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See detailImportance de l'axe hypophyso-hepatique dans le regulation hormonale de la croissance chez le bovin.
Renaville, Robert ULg; Portetelle, Daniel ULg; Sneyers, M. et al

in Bulletin des Recherches Agronomiques de Gembloux (1991), 26(2),

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See detailEvidence that the interaction between circulating IgA and fibronectin is a normal process enhanced in primary IgA nephropathy.
Davin, J. C.; Li Vecchi, M.; Nagy, J. et al

in Journal of Clinical Immunology (1991), 11(2), 78-94

A solid-phase ELISA was set up to measure the direct binding capacity (BC) of different, commercially available, purified human IgA preparations to plates coated with human fibronectin (FN). It was found ... [more ▼]

A solid-phase ELISA was set up to measure the direct binding capacity (BC) of different, commercially available, purified human IgA preparations to plates coated with human fibronectin (FN). It was found that secretory, polymeric, and, to a much lesser extent, monomeric IgA exhibited elevated FN-BC as compared to their BC to plates coated with bovine serum albumin. This binding was specific since not observed with human IgG or IgM antibodies. In addition, we noted that this interaction was dose dependent, Ca2+ dependent, saturable, and not covalent, was inhibited by soluble FN, but not by a prior incubation of FN-coated plates with anti-human fibronectin antibodies, and appeared to involve on the dimeric FN other structures than its heparin-binding, collagen-binding, or C1q-binding domains. Similar experiments conducted with normal plasma indicated that plasma IgA, but not plasma IgG or IgM, was also capable of significant binding to FN-coated plates. In contrast, serum IgA did not significantly bind to those plates under otherwise identical experimental conditions. Thus, the coagulation process induces a strong decrease in the FN-BC of circulating IgA, which implies the necessity of using plasma rather than serum to study such interactions. The apparent molecular weight of plasma IgA interacting with FN-coated plates ranged between 450 and 900 kd, and its major binding characteristics were quite similar to those observed with purified polymeric IgA. The FN-BC of plasma IgA was then measured by the same ELISA in 30 patients with primary IgA nephropathy (IgAN) and in 23 healthy controls. The mean FN-BC of plasma IgA was significantly higher in patients than in normal controls. This enhancement was due mainly to the augmentation in the concentration of circulating "macromolecular" IgA and was significantly correlated with the plasma levels of IgA-FN complexes. However, the pathogenetic role of these findings was probably not determinant since similar observations were made in alcoholic liver cirrhosis without urinary abnormalities and since the FN-BC of plasma IgA or the plasma levels of IgA-FN complexes were not correlated with the various biological parameters of evolutivity of primary IgAN. In conclusion, these studies suggest that the ability of polymeric IgA to directly bind to FN is involved in the formation of circulating IgA-FN complexes and that this normal binding process, although enhanced in IgAN, is probably not responsible for kidney injury, at least in the patients studied. [less ▲]

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See detailL'inertie dans la maison individuelle : un gain de consommation énergétique ? Simulation et étude de cas
Nicolas, Jacques ULg; Andre, Philippe ULg; Rivez, Jean-François et al

in Revue générale de thermique (1991), 30(352), 240-249

L'inertie thermique dans le bâtiment est l'une des composantes les plus étudiées en architecture bioclimatique. Le principal intérêt d'une grande capacité thermique est d'assurer le confort, surtout ... [more ▼]

L'inertie thermique dans le bâtiment est l'une des composantes les plus étudiées en architecture bioclimatique. Le principal intérêt d'une grande capacité thermique est d'assurer le confort, surtout durant l'été, en déphasant les apports extérieurs et en atténuant les fluctuations de la température extérieure. L'inertie a beaucoup été étudiée dans des cellules-tests. La démarche décrite dans cet article se base sur une modélisation par le logiciel Suncode de différentes variantes d'une maison unifamiliale, représentative du parc de logement belge. Pour une maison purement passive, il s'avère que la consommation énergétique annuelle est beaucoup moins sensible à l'inertie qu'à l'isolation de la maison. Une saturation de consommation est même atteinte pour de grandes inerties. Pour assurer un déphasage supérieur à une journée, il conviendrait de favoriser un système actif de captation de l'énergie solaire qui serait directement injectée dans le milieu des parois épaisses de la maison. [less ▲]

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See detailFluid inclusions in charnockites from the Bjerkreim-Sokndal massif (Rogaland, southwestern Norway): fluid origin and in situ evolution
Wilmart, Edith; Clocchiatti, Robert; Duchesne, Jean-Clair ULg et al

in Contributions to Mineralogy & Petrology (1991), 108

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See detailCharacterization of the discoidal complexes formed between apoA-I-CNBr fragments and phosphatidylcholine.
Vanloo, B.; Morrison, J.; Fidge, N. et al

in Journal of Lipid Research (1991), 32(8), 1253-64

The structure, composition, and physico-chemical properties of lipid-protein complexes generated between dimyristoylphosphatidylcholine (DPMC) and the CNBr fragments of human apoA-I were studied. The ... [more ▼]

The structure, composition, and physico-chemical properties of lipid-protein complexes generated between dimyristoylphosphatidylcholine (DPMC) and the CNBr fragments of human apoA-I were studied. The fragments were separated by high performance liquid chromatography and purified on a reversed-phase column. The complexes with DMPC were isolated on a Superose column; their dimensions were obtained by gradient gel electrophoresis and by electron microscopy. The secondary structure of the protein in the complexes was studied both by circular dichroism and by attenuated total reflection infrared spectroscopy. The fragments 1 and 4 of apoA-I, containing, respectively, two and three amphipathic helices, recombined with the phospholipid to generate discoidal particles with sizes similar to that of apoA-I- and apoA-II-DMPC complexes. The infrared measurements indicated that in all complexes the apolipoprotein helical segments were oriented parallel to the phospholipid acyl chains and that the protein was located around the edges of the discs. Computer modelling of the complexes based on energy minimization techniques proposed a model for these particles in agreement with the dimensions measured experimentally. In conclusion, we propose that apoA-I and its longest CNBr fragments are able to generate discoidal particles with DMPC, with apolipoprotein helical segments oriented parallel to the acyl chains of the phospholipids. [less ▲]

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See detailCorrelation of phasic muscle strength and corticomotoneuron conduction time in multiple sclerosis.
van der Kamp, W.; MAERTENS DE NOORDHOUT, Alain ULg; Thompson, P. D. et al

in Annals of Neurology (1991), 29(1), 6-12

Central motor conduction times for the adductor pollicis muscle, the twitch force of that muscle to scalp magnetic motor cortex stimulation, and the maximum force of phasic voluntary contraction of the ... [more ▼]

Central motor conduction times for the adductor pollicis muscle, the twitch force of that muscle to scalp magnetic motor cortex stimulation, and the maximum force of phasic voluntary contraction of the same muscle were measured in 15 patients with multiple sclerosis. Two tests of manual dexterity of the same hand also were studied: the Purdue pegboard test, and the maximal frequency of a scissors movement of the thumb and index finger. The patients had normal strength or minimal weakness of the intrinsic muscles of the hand on clinical examination. The mean central motor conduction times for the adductor pollicis muscle for the patients were longer than normal, the peak twitch force of the adductor pollicis muscle evoked by cortical stimulation and the maximum force of a phasic voluntary contraction of the adductor pollicis muscle were smaller than normal. There were strong correlations between all these measures. Central motor conduction time in the patients was inversely correlated with voluntary phasic force and the twitch force after cortical stimulation. That is, the longer the central motor conduction time, the weaker the force. Prolonged central motor conduction time is likely to be accompanied by conduction block in corticomotoneuron pathways. The correlation of central motor conduction time with voluntary phasic force and the twitch force most likely reflects the degree of conduction block and temporal dispersion rather than delay in conduction per se. These results indicate that objective assessments of phasic muscle strength may reveal correlations with central motor conduction time that are not evident on conventional clinical examination which assesses tonic muscle contraction strength.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailLe douglas en Belgique: premiers résultats d'une étude intégrée.
Rondeux, Jacques ULg; Laurent, C.; Thibaut, André ULg et al

in Silva Belgica (1991), 98(5), 29-35

La place occupée aujourd’hui par le douglas (Pseudotsuga menziesii (Mirb.) Franco) dans la sylviculture belge méritait qu’une étude aussi complète que possible lui soit consacrée. Depuis 1985, grâce à ... [more ▼]

La place occupée aujourd’hui par le douglas (Pseudotsuga menziesii (Mirb.) Franco) dans la sylviculture belge méritait qu’une étude aussi complète que possible lui soit consacrée. Depuis 1985, grâce à l’aide de l’I.R.S.I.A., le Département des Eaux et Forêts de la Faculté des Sciences Agronomiques de Gembloux s’est attaché à étudier cette essence dans 3 directions complémentaires : - la productivité des peuplements, exprimée au moyen de modèles de croissance et de tables de production à sylvicultures variables ; - la confection d’une matrice d’aptitude, reflet des potentialités de l’essence en fonction des conditions stationnelles ; - la qualité technologique du bois, traduite par ses principales propriétés physiques et mécaniques. Pour l’essentiel, cette étude intégrée analyse donc sous les angles quantitatifs et qualitatifs la production ligneuse du douglas en vue de fournir des éléments indispensables à sa sylviculture, à la prévision de sa production et à la valorisation de son bois. Eu égard à l’état d’avancement de nos travaux et à l’intérêt manifesté par les candidats reboiseurs pour cette essence, nous avons jugé qu’il était utile de communiquer les premiers résultats ou tendances observés dans les différents domaines précités. Nous envisagerons d’abord l’importance actuelle du douglas en termes de surfaces occupées (paragraphe 2), nous présenterons le matériel de base de l’étude (paragraphe 3) et quelques milieux de croissance typiques (paragraphe 4). Nous fournirons ensuite un ensemble de données relatives à ses capacités de production (paragraphe 5) et évoquerons quelques résultats issus d’analyses exploratoires portant sur la qualité de son bois (paragraphe 6). [less ▲]

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See detailHigh temperature crossover in paraconductivity of granular Y1Ba2Cu3O7-y
Ausloos, Marcel ULg; Gillet, François ULg; Laurent, Christian et al

in Zeitschrift für Physik. B, Condensed Matter (1991), 84(1), 13-16

We have examined the deviation from linearity of the temperature dependence of the electrical resistivity of a YBaCuO ceramics. We have observed at high temperature a crossover behavior toward a ... [more ▼]

We have examined the deviation from linearity of the temperature dependence of the electrical resistivity of a YBaCuO ceramics. We have observed at high temperature a crossover behavior toward a logarithmic temperature dependence at lower temperature. It seems relevant to attribute the origin of such a term to a pair breaking mechanism contribution, thus to give a lower bound to the existence of superconductivity fluctuations onset temperature. Our findings also implies that carriers are bosons above T(c). [less ▲]

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See detailLes inventaires forestiers nationaux en Europe: tentative de synthese.
Lecomte, Hugues; Rondeux, Jacques ULg

in Silva Belgica (1991), 98(6), 41-50

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See detailAtlas des Mammifères sauvages de Wallonie (suite). Le chat sauvage, Felis silvestris Schreber, 1777
Libois, Roland ULg

in Cahiers d'Ethologie (1991), 11(1), 81-90

Distribution and habitat in Belgium, population status, hunting and trapping, road casualties, habitat modifications, protection.

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See detailGenomic Diversity among Bovine Herpesvirus 4 Field Isolates
Bublot, M.; Wellemans, G.; Van Bressem, M. F. et al

in Archives of Virology (1991), 116(1-4), 1-18

Twenty-eight Belgian field isolates of bovine herpesvirus 4 (BHV-4) coming from a variety of clinical diseases have been studied by restriction analysis and Southern blot hybridization. The unique central ... [more ▼]

Twenty-eight Belgian field isolates of bovine herpesvirus 4 (BHV-4) coming from a variety of clinical diseases have been studied by restriction analysis and Southern blot hybridization. The unique central part of the genome was very well conserved among strains; only one variation in a restriction site was detected in 3 isolates which contain an additional EcoRI site also present in the LVR 140 strain; three regions in the unique part of the genome varied in size, one of these was highly variable. The polyrepetitive fragments (prDNAs) situated in tandem at both genomic ends were also variable in size; most of the isolates exhibited prDNA units of one size (major prDNA) and some of them also contained prDNA units having a different size and present in a lower amount (minor prDNA) than the major prDNA. Other isolates possessed two major prDNAs of different sizes which were both present in the same genome. The left junction fragment between the unique and the repeated sequences was also highly variable. No relationship could be established between the restriction pattern and the origin of the isolates; patterns of isolates coming from the same herd were similar except in one case. This study provides a view of the genome variability existing between BHV-4 field isolates. [less ▲]

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See detailCV 205-502 : Een niewe lang-werkende dopamine-agonist voor de behandeling van hyperprolactinemie.
Verhelst, J.; Abs, R.; Beckers, Albert ULg et al

in Tijdschrift voor Geneeskunde (1991)

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See detailThe Effect of Shape, Age and Extension on the Compliance of Equine Tracheal Segments
Art, Tatiana ULg; Lekeux, Pierre ULg

in Veterinary Research Communications (1991), 15(2), 135-146

The influence of the age and weight of the animal as well as that of the extension and the shape of the trachea on the mechanical properties of the cervical trachea was studied in 33 isolated tracheal ... [more ▼]

The influence of the age and weight of the animal as well as that of the extension and the shape of the trachea on the mechanical properties of the cervical trachea was studied in 33 isolated tracheal segments obtained from freshly slaughtered horses. The relationship between intraluminal pressure and volume was determined in the cervical tracheal segments positioned firstly under normal longitudinal tension and secondly in hyperextension. At the same time, changes in the area of the cross-section of the lumen (X-SA) at the midpoint of the segment were measured using photographs obtained by slit-lamp transillumination and endoscopy. The sagittal (DS) and transverse (DT) diameters were determined for each segment and the DT/DS ratio was calculated to give an estimate of the shape of the X-SA. The results showed that (i) neither the age nor the weight of the horses had any influence on the mechanical properties of the trachea; (ii) extension decreases the compressibility of the tracheal segment in vitro; (iii) there is a wide variation in the extrathoracic tracheal X-SA shape in horses; and (iv) the shape of the X-SA has a major influence on the mechanical properties of the trachea. It was concluded that (i) hyperextension of the neck will partly facilitate respiration at high levels of ventilation by elongating the trachea and by decreasing its collapsibility; and (ii) the tracheal collapse which may occur during high levels of ventilation will be more or less important depending on the individual X-SA shape. [less ▲]

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See detailAtlas des mammifères sauvages de Wallonie (suite). Le mouflon, Ovis ammon
Anciaux, Marie Rose; Libois, Roland ULg

in Cahiers d'Ethologie (1991), 11(1), 91-102

Distribution in Belgium, origin, introduction, evolution of the Belgian population, habitat,legal status,

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See detailTraitement des canaux carpiens modérés par le port nocturne d'une orthèse antébrachiale
WANG, François-Charles ULg; Gurne, Eric; FOIDART, Marguerite ULg et al

in Acta Physiotherapica et Rheumatologica Belgica (1991)

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See detailA new Theory for frequencies computation of overhead lines with bundle conductors.
dubois, Hervé; Dal Maso, Filipo; Lilien, Jean-Louis ULg

in Bulletin Scientifique de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore (1991), 1

Vertical, horizontal and torsional mechanical frequencies are studies for both single and bundle conductor lines. Models and tests are presented. These data are of particular impact on galloping ... [more ▼]

Vertical, horizontal and torsional mechanical frequencies are studies for both single and bundle conductor lines. Models and tests are presented. These data are of particular impact on galloping phenomenon. [less ▲]

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See detailL'approvisionnement en eau des porcs: un élément à ne pas négliger
Vandenheede, Marc ULg; Nicks, Baudouin ULg

in Annales de Médecine Vétérinaire (1991), 135(2), 123-128

Water requirements are determined according to the amounts of water stored in the tissues and lost by the animal. This review summarises estimates of water losses by faeces, urine, milk and by evaporation ... [more ▼]

Water requirements are determined according to the amounts of water stored in the tissues and lost by the animal. This review summarises estimates of water losses by faeces, urine, milk and by evaporation from the skin and respiratory tract. A description of the main pig drinkers is given with recommendations about the number, siting, fixing height and flow rate. Drinking water quality guidelines are also given. [less ▲]

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See detailLove in a Post-Cultural Ditch: Janet Frame
Delrez, Marc ULg

in Kunapipi : Journal of Postcolonial Writing (1991), XIII(3), 108-116

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See detailThrombocytopénie allergique à la nitrofurantoïne
Sautois, Brieuc ULg; Mélon, P.; Grek, V. et al

in Revue Médicale de Liège (1991), 46

Nous rapportons le dixième cas de thrombocytopénie à la nitrofurantoïne. Trois épisodes successifs sont décrits chez la même patiente, s'accompagnant de frissons et d'une thrombocytopénie extrême. La ... [more ▼]

Nous rapportons le dixième cas de thrombocytopénie à la nitrofurantoïne. Trois épisodes successifs sont décrits chez la même patiente, s'accompagnant de frissons et d'une thrombocytopénie extrême. La récupération hématologique est rapide à l'arrêt du médicament (retour à 150 000 plaquettes après 3 à 4 jours), en rapport avec la demi-vie plasmatique brève de la nitrofurantoïne. [less ▲]

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See detailCalcul de la propagation d'une onde de rupture de barrage
Pirotton, Michel ULg

in Tribune de l'Eau (La) (1991), 44(551), 23-31

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See detailFonction pulmonaire de la chèvre : normes et spécificités
Bakima, M.; Arendt, J.; Lomba, F. et al

in Annales de Médecine Vétérinaire (1991), 135

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See detailPolarization correction to the electrostatic potential at the CNDO and theab initio level. Influence of the basis set expansion
Dehareng, Dominique ULg; Dive, Georges ULg; Ghuysen, Jean-Marie ULg

in Theoretica Chimica Acta (1991), 79(2), 141-152

The influence of the basis set on the electrostatic potential corrected for polarization has been studied for H2S, CH3SH and COHCH2SH. The position and deepness of the minima and the height of the barrier ... [more ▼]

The influence of the basis set on the electrostatic potential corrected for polarization has been studied for H2S, CH3SH and COHCH2SH. The position and deepness of the minima and the height of the barrier between symmetric minima is discussed at both the deorthogonalized CNDO/2 and ab initio levels within STO-3G, 3-21G, 4-31G, 6-31G and 6-311G basis sets. The calculation of the electrostatic potential and corrected one using CNDO deorthogonalized coefficients including 3d orbitals has been applied at the first time on sulfur-containing molecules. The influence of polarization and diffuse functions has also been analysed and the incidence of the polarization correction on the relative proton affinity in NH2(CH2)3NHCH3 and in the adenine molecule has been investigated at the CNDO and ab initio levels. At both levels, the relative proton affinity of several basic sites in the same molecule can be qualitatively expressed without inclusion of the polarization correction except in the case of substituted amines. [less ▲]

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See detailRelease of 7-alkylguanines from N-(2-chloroethyl)-N'-cyclohexyl-N-nitrosourea-modified DNA by 3 methyladenine DNA glycosylase
Habraken, Yvette ULg; Carter, C.; Kirk, M. et al

in Cancer Research (1991), 51

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See detailLaparoscopic management of large ovarian endometrial cyst: use of fibrin sealant.
Donnez, Jacques; NISOLLE, Michelle ULg

in Journal of Gynecologic Surgery (1991), 7(3), 163-6

In order to prevent postoperative adhesions often present after CO 2 laser vaporization of large endometriomas, 62 patients with endometriomas greater than 3 cm diameter were treated with a new procedure ... [more ▼]

In order to prevent postoperative adhesions often present after CO 2 laser vaporization of large endometriomas, 62 patients with endometriomas greater than 3 cm diameter were treated with a new procedure. Partial cystectomy was performed using the CO 2 laser. Residual endometrial cyst was then vaporized. After laparoscopic vaporization of the interior cyst wall, a fibrin glue (Tissucol) was injected onto the vaporized area to close laparoscopically the ovarian cyst cavity. When performed, second-look laparoscopy demonstrated healing of the ovary without any periovarian adhesions. The incidence of periovarian adhesions was significantly lower (p less than 0.01) than in the group of women treated by laparoscopy and in whom the glue was not used to close the ovarian cyst cavity. [less ▲]

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See detailEtude régionale par éléments finis d'une nappe libre située dans les craies du Crétacé en Belgique
Dassargues, Alain ULg; Monjoie, Albéric ULg; Lambert, J. M. et al

in Revue des Sciences de l'Eau = Journal of Water Science (1991), 4

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See detailModélisation moléculaire de l'usambarensine, de la tubulosine et de l'émétine, alcaloïdes cytotoxiques et antiamibiens
Quetin-Leclercq, J.; Dupont, Léon ULg; Wright, C. W. et al

in Journal de Pharmacie de Belgique (1991), 46(2, Mar-Apr), 85-92

The analyses of the different possible conformations of usambarensine, tubulosine and emetine, which possess interesting cytotoxic and amoebicide properties showed us that they cannot take the planar ... [more ▼]

The analyses of the different possible conformations of usambarensine, tubulosine and emetine, which possess interesting cytotoxic and amoebicide properties showed us that they cannot take the planar conformation proposed to explain the activity of this type of molecules on protein synthesis. Nevertheless, a common (non planar) conformation exists where the angles between the two plans containing the aromatic rings are nearly the same for the three compounds. This fact could confirm the hypothesis of a common receptor which would be slightly different in amoebae because of its higher sensitivity to usambarensine. [less ▲]

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See detailGeotechnical properties of the Quaternary sediments in Shanghai
Dassargues, Alain ULg; Biver, Pierre; Monjoie, Albéric ULg

in Engineering Geology (1991), 31(1), 71-90

The subsoil of Shanghai is composed of Quaternary sediments of the Yangtse River estuary. The center of the city has undergone a man-induced subsidence due to water pumping in the confined multi-aquifer ... [more ▼]

The subsoil of Shanghai is composed of Quaternary sediments of the Yangtse River estuary. The center of the city has undergone a man-induced subsidence due to water pumping in the confined multi-aquifer system located in these sediments. Together with a sedimentological study of the post-Pleistocene conditions of deposition and accumulation, an accurate geotechnical study has been completed on the basis of all the available data from identification, oedometer and triaxial tests. Size analysis, X-ray analysis, compressibility characteristics, void ratio, preconsolidation pressures, permeabilities are considered taking into account the sedimentary sequence. Some relations between parameters are deduced and the hydrodynamic parameters are related to compaction parameters in order to predict their coupled and non-linear effects on the subsidence phenomena. Conclusions consist in the determination of the zones where different sensitivities to compaction are evaluated in these Quaternary formations. [less ▲]

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See detailGeneration of bovine multisite haplotypes using random cosmids
Steele, M.; Georges, Michel ULg

in Genomics (1991), 10

One hundred ten random cosmids were used to probe Southern blots of DNA from nine unrelated cattle digested with 12 restriction enzymes. Although only one-third of the expected fragments were explored, 85 ... [more ▼]

One hundred ten random cosmids were used to probe Southern blots of DNA from nine unrelated cattle digested with 12 restriction enzymes. Although only one-third of the expected fragments were explored, 85% of the cosmids revealed at least one polymorphism. The mean heterozygosity of the generated haplotypes was estimated at 51.9%. A surprisingly high proportion of polymorphisms (approximately 25%) was attributed to insertion-deletion events, compensating for the lower level of nucleotide diversity observed in cattle (pi approximately 0.0007) compared to that in human. The mutation rate at cytosines in the CpG dinucleotide was estimated approximately 10 times higher than that at other nucleotides. When used in linkage studies, the generated markers should cover approximately 50% of the bovine genome. [less ▲]

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See detailShort-latency autogenic inhibition in patients with Parkinsonian rigidity.
Delwaide, Paul ULg; PEPIN, Jean-Louis ULg; MAERTENS DE NOORDHOUT, Alain ULg

in Annals of Neurology (1991), 30(1), 83-9

The spinal Ib interneuron efficacy has been compared in 11 control subjects and 19 patients with parkinsonian rigidity. In normal subjects, gastrocnemius medialis nerve stimulation induces an inhibition ... [more ▼]

The spinal Ib interneuron efficacy has been compared in 11 control subjects and 19 patients with parkinsonian rigidity. In normal subjects, gastrocnemius medialis nerve stimulation induces an inhibition of the soleus H reflex for 3 to 8 msec with a peak at 5 msec of 83.72 +/- 7.28% of the control value of H reflex. In parkinsonian patients, inhibition is reduced or even replaced by facilitation, which also peaks at 5 msec. The departures from normal values correlate with rigidity intensity assessed by the Webster scale. Increase in rigidity is associated, first, with a reduction of inhibition and, from a score of 2 or more, with facilitation replacing the normal inhibition. In addition to providing an electrophysiological index of rigidity, reduction in autogenic inhibition might be one of the neurophysiological mechanisms underlying rigidity. In association with the known hyperactivity of the Ia inhibitory interneuron in Parkinson's disease, reduction of activity of Ib interneuron could be explained by an increased activity in the reticularis gigantocellularis nucleus; its efferent tracts both inhibit Ib interneurons and activate Ia interneurons. [less ▲]

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See detailPneumonie vermineuse caprine à Mulerius capillaris : étude des paramètres de la fonction pulmonaire
Bakima, M.; Arendt, J.; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1991), 131

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See detailVom Auffinden, Entziffern und Bewahren medizinisch-griechischer Papyrustexte
Marganne, Marie-Hélène ULg

in Waage (Die) (1991), 30(4), 136-143

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See detailCloning and characterization of a cDNA encoding the beta-subunit of the bovine insulin-like growth factor-1 receptor.
Sneyers, M.; Kettmann, Richard ULg; Massart, Serge et al

in DNA Sequence : The Journal of DNA Sequencing & Mapping (1991), 1(6),

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See detailThe Solar Abundance of Iron: a "Final" Word !
Biémont, Emile ULg; Baudoux, M.; Kurucz, R.L. et al

in Astronomy and Astrophysics (1991), 249

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See detailTarifs de cubage peuplement pour le douglas Pseudotsuga menziesii (Mirb.) Franco en moyenne et haute Belgique
Rondeux, Jacques ULg; Laurent, Christian; Lejeune, Philippe ULg

in Revue Forestière Française (1991), XLIII(6), 507-513

L'estimation rapide du volume des peuplements de nos principales essences forestières peut être réalisée au moyen de tarifs de cubage de peuplements. Nous avons mis à profit de grand nombre de données ... [more ▼]

L'estimation rapide du volume des peuplements de nos principales essences forestières peut être réalisée au moyen de tarifs de cubage de peuplements. Nous avons mis à profit de grand nombre de données dendrométrique récoltées dans le cadre d'une étude consacrée à la sylviculture et à la production du Douglas, pour établir des tarifs adaptés à la détermination du volume des peuplements de ce résineux en pleine expansion et qui couvre aujourd'hui près de 11 000 hectares en Moyenne et Haute Belgique. Nous présenterons d'abord les caractéristiques du matériel expérimental ainsi que la technique de construction des tarifs et nous fournirons les résultats obtenus pour le volume bois fort tige ainsi que ceux relatifs à différentes découpes, et, nous envisagerons enfin l'utilisation pratique de ces tarifs et rappellerons leur intérêt en matière de gestion forestière. [less ▲]

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See detailA Saint-Trond, un import-export de reliques des Onze Mille Vierges dans la seconde moitié du XIIIe siècle
George, Philippe ULg

in Bulletin de la Société Royale Le Vieux-Liège (1991), t. XII, n° 253

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See detailSurveillance des variations de la nappe d'eau superficielle en Fagnes de Duret et du Setay
Erpicum, Michel ULg; Streel, Maurice ULg; Groulard, J. M. et al

in Hautes Fagnes (1991), 203

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See detailThe triviality of abortion in Greece
Naziri, Despina ULg

in Planned Parenthood in Europe = Planning Familial en Europe (1991), 20(2), 12-14

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See detailUn exemple d'étude dendrochronologique: la charpente de la chapelle Saint_hubert à Weweler (Burg-Reuland)
Hoffsummer, Patrick ULg

in Bulletin de la Fondation Vanhove-Vonneche (1991), 3

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See detailNew alkoxypyridine Sulfonamides: Synthesis, Biological Evaluation and Physicochemical Properties
Liégeois, Jean-François ULg; Dive, Georges ULg; Dupont, Léon et al

in Helvetica Chimica Acta (1991), 74(8), 1764-1772

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See detailActions de groupes et représentations d’entiers par des formes quadratiques quaternaires
Pays, Isabelle ULg

in Bulletin de la Société Mathématique de Belgique (1991), 43

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See detailInterprétation et rectification des jugements répressifs
Masset, Adrien ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (1991)

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See detailLes legs volontaires en France: évaluation et explication
Pestieau, Pierre ULg; Perelman, Sergio ULg

in Economie et Prévision (1991), (100-101), 129-135

Cet article se propose d’évaluer l’importance des legs volontaires sur la base d’une enquête de l’Insee sur la structure des actifs financiers de 5 600 ménages. Cette mesure est alors analysée pour voir ... [more ▼]

Cet article se propose d’évaluer l’importance des legs volontaires sur la base d’une enquête de l’Insee sur la structure des actifs financiers de 5 600 ménages. Cette mesure est alors analysée pour voir si elle correspond à nos a priori sur les legs intentionnels et si elle est conforme à quelques modèles d’héritage. [less ▲]

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See detailLes innovations dans l'intervention sociale et la justice des mineurs en Belgique
Born, Michel ULg

in Revue Internationale de Criminologie et de Police Technique (1991), 4

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See detailBlowout of Carotid Venous Patch Angioplasty
VAN DAMME, Hendrik ULg; GRENADE, Thierry ULg; CREEMERS, Etienne ULg et al

in Annals of Vascular Surgery (1991), 5(6), 542-5

Two cases of vein patch blowout were observed five and seven days after carotid bifurcation endarterectomy with patch angioplasty. Both patients died in spite of emergency reoperation. One patient ... [more ▼]

Two cases of vein patch blowout were observed five and seven days after carotid bifurcation endarterectomy with patch angioplasty. Both patients died in spite of emergency reoperation. One patient developed respiratory failure with subsequent fatal cardiac arrest seven days after reoperation; the other died of extensive hemispheric infarction on the fifth postoperative day. At reoperation both ruptures were found to be located in the middle of the patch whereas the suture lines were intact. Both patients were hypertensive. In the first case, an accessory saphenous vein retrieved from the calf had been the only venous material available for the patch, while the other patient had varicose veins in the contralateral leg. Pathology revealed central transmural tissue necrosis in one of the disrupted patches. A review of the literature regarding morphologic alterations of free vein grafts placed within the arterial circulation as well as hemodynamics in patched arterial segments may provide additional insight as to the inherent benefits and risks of vein patch angioplasty after carotid endarterectomy. When considering vein patch angioplasty, particular attention should be directed to the gross aspect of the vein to be used as well as to any antecedent history of phlebitis. [less ▲]

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See detailLe test ELISA, une nouvelle voie rapide de determination de residus d'herbicides dans le sol. Application au cas de l'isoproturon.
Liegeois, E.; Dehon, Y.; Deleu, R. et al

in Mededelingen van de Faculteit Landbouwwetenschappen (Rijksuniversiteit te Gent) (1991), 56(3a),

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See detailAxillounifemoral and Axillobifemoral Bypasses. Retrospective Study of 85 Cases
DUJARDIN, P.; LAVIGNE, Jean-Paul ULg; Defraigne, Jean-Olivier ULg et al

in Acta Chirurgica Belgica (1991), 91(4), 155-60

From 1983 to 1990, 65 axillobifemoral and 20 axillofemoral bypasses have been performed in 85 patients (77 men and 8 women), with a mean age of 69 +/- 9 years. Indications for surgery were: severe ... [more ▼]

From 1983 to 1990, 65 axillobifemoral and 20 axillofemoral bypasses have been performed in 85 patients (77 men and 8 women), with a mean age of 69 +/- 9 years. Indications for surgery were: severe aortoiliac occlusive disease (87%), sepsis of previous aortoiliac prosthesis, abdominal aorta aneurysm. Anatomic bypass was precluded for general (81%) or local (19%) conditions. In the last group, 9 patients have had previous laparotomy. Four patients presented with aortoenteric fistulas. Eighteen patients were operated on in emergency. The operative mortality was 12%, with 50% cardiac related deaths. Early primary patency was 98%. Early secondary patency was 100%. The mean follow-up is 28 +/- 15 months. The 3 years survival is 77%. The cumulative patency rates at 1 and 3 years are 89% and 76% respectively. Although axillobifemoral bypasses achieve poor long-term results when compared with aortoiliac bypasses, they can be considered in high risk patients. In this group of patients, the cumulative patency rate and the survival curves tend to be parallel. [less ▲]

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See detailUn témoignage antérieur à Celse sur l’opération du coloboma : P. bibl. univ. Giss. IV.44
Marganne, Marie-Hélène ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1991), 66

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See detailLe point sur l'evolution dans le domaine des formulations.
Schiffers, Bruno ULg; Galoux, M.

in Parasitica (1991), 47(2-3),

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See detailTranscriptional induction of the human prolactin gene by cAMP requires two cis-acting elements and at least the pituitary-specific factor Pit-1
Peers, Bernard ULg; Monget, Philippe; Nalda, M. Asuncion et al

in Journal of Biological Chemistry (1991), 266(27), 18127-34

To identify the cis-acting elements responsible for cAMP stimulation of human prolactin (hPRL) promoter activity, pituitary GC cells were transfected with 5'-deleted hPRL promoters fused to the ... [more ▼]

To identify the cis-acting elements responsible for cAMP stimulation of human prolactin (hPRL) promoter activity, pituitary GC cells were transfected with 5'-deleted hPRL promoters fused to the chloramphenicol acetyltransferase reporter gene. The proximal regulatory region (coordinates -250 to -42) was sufficient to confer strong cAMP stimulation (+/- 25 fold). Further 5' and 3' deletions performed within this proximal region demonstrated that two types of cis-acting elements are involved in the cAMP regulation: (i) the binding sites of the pituitary-specific factor Pit-1, and (ii) the sequence between coordinates -115 and -85 (named fragment A), which contains a TGACG motif. We show by gel-shift and Southwestern experiments that fragment A binds Pit-1 monomer and also a ubiquitous factor that is neither cAMP-responsive element-binding protein nor activator protein-1. Strong cAMP induction was observed when fragment A was juxtaposed to a Pit-1 binding site. That Pit-1 plays an important role was supported further by the finding that the hPRL proximal region conferred cAMP regulation when linked to the herpes simplex virus thymidine kinase promoter only in pituitary GC cells and not in other heterologous cells, which do not express Pit-1. Furthermore, we observed that concatenated Pit-1 binding sites were able to confer cAMP responsiveness to the thymidine kinase promoter in GC cells. [less ▲]

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See detailBijlokekaai: Ziekenzaal
Hoffsummer, Patrick ULg; Laleman, Marie-Christine; Raveschot, Patrick

in Stadsarcheologie (1991), 15(1), 56-57

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See detailApplication of the GHER 3D general circulation model to the Western Mediterranean
Beckers, Jean-Marie ULg

in Journal of Marine Systems (1991), 1(4), 315-332

The GHER 3D k− OGCM is briefly described and its application to the Western Mediterranean Sea's specifities is discussed. The simulation of the Western Mediterranean General Circulation in typical winter ... [more ▼]

The GHER 3D k− OGCM is briefly described and its application to the Western Mediterranean Sea's specifities is discussed. The simulation of the Western Mediterranean General Circulation in typical winter conditions shows that the model is able to reproduce the main physical processes and the main trends of the general circulation. However, the detailed current patterns appears too sensitive to the choice of initial conditions and a better knowledge of these conditions is required for further routine forecasts. [less ▲]

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See detailLe dosage du récepteur circulant de la transferringe : une nouveauté pour quantifier l'érythropoïèse
Beguin, Yves ULg; Loo, M.; Fillet, Georges ULg

in Médecine et Hygiène (1991), 49

Les échanges de fer entre les tissus se font par l'intermédiaire de la transferrine plasmatique qui donne son fer aux cellules grâce à son interaction avec un récepteur mambranaire spécifique. Une forme ... [more ▼]

Les échanges de fer entre les tissus se font par l'intermédiaire de la transferrine plasmatique qui donne son fer aux cellules grâce à son interaction avec un récepteur mambranaire spécifique. Une forme soluble du récepteur de la transferrine a été mise en évidence dans le sang. Son dosage par méthode ELISA représente une excellente mesure quantitative de l'érythropoïèse qui devrait remplacer les méthodes anciennes moins fiables (réticulocytes) et plus complexes (tests au fer marqué). [less ▲]

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See detailModélisation mathématique de la nappe alluviale de la Meuse en aval de Liège (Belgique)
Dassargues, Alain ULg; Lox, André

in CHO-TNO Reports and notes (The Netherlands) (1991), (26), 27-54

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See detailJulian Key
Duchesne, Jean-Patrick ULg

in Sint-Lukasgalerij (1991), 2

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See detailAdenohypophysis hormone gene products in 14 pituitary adenomas: analysis by immunohistochemistry and northern blotting.
Scippo, Marie-Louise ULg; Beckers, Albert ULg; Frankenne, Francis ULg et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1991), 99(2), 135-40

We investigated 14 pituitary adenomas (10 silent adenomas; 3 prolactinomas and one GH-secreting tumor) for the presence of hormone gene transcripts (Northern blot) as well as for translation products ... [more ▼]

We investigated 14 pituitary adenomas (10 silent adenomas; 3 prolactinomas and one GH-secreting tumor) for the presence of hormone gene transcripts (Northern blot) as well as for translation products (immunohistochemistry). The GH-secreting tumor was shown to express the genes coding for GH and PRL and to synthesize the corresponding hormones. In the cases of prolactinomas, immunohistochemical data demonstrated the synthesis of prolactin only. In addition to the PRL gene, Northern blot analysis revealed the transcription of the alpha-subunit gene in one case. Hormone genes were found to be expressed in 7 out of the 10 silent tumors, whereas no hormone synthesis was detected in any of these tissues. LH-beta mRNA was found in 3 cases, FSH-beta mRNA in 5 cases and alpha-subunit gene was shown to be expressed in one case. Surprisingly, the level of expression of the FSH-beta gene was higher than in normal tissue. This study confirms that some so called "silent" adenomas are expressing alpha- and/or beta-subunit glycoprotein hormone genes, even if no hormone is synthesized. The therapeutic action of bromocriptine described in some "silent" adenomas cases could be related to that hormone gene expression potentiality. [less ▲]

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See detailAnalyse du coût d'exploitation des navires sur les voies d'eau intérieures
Marchal, Jean ULg; groupe international n°11 du Comité Permanent I

in Bulletin de l’Association Internationale Permanente des Congrès de Navigation [Bulletin de l'AIPCN] (1991), (supplément au Bulletin n°74), 20

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See detailAbsence de benefice de l'administration intermittente de l'insuline lors d'un traitement par pompe a perfusion sous-cutanee chez le diabetique de type-1.
Lilet, Henri ULg; Krzentowski, G.; Bodson, Arthur et al

in Diabète & Métabolisme (1991), 17(3), 363-72

Our study is based on two constatations: 1) Hyperinsulinaemia, a possible atherogenic factor, is frequent under continuous subcutaneous insulin infusion. 2) Pulsatile intravenous insulin delivery improve ... [more ▼]

Our study is based on two constatations: 1) Hyperinsulinaemia, a possible atherogenic factor, is frequent under continuous subcutaneous insulin infusion. 2) Pulsatile intravenous insulin delivery improve the insulin's hypoglycaemic activity. To test if equivalent metabolic control can be obtained with a reduced intermittent subcutaneous infused insulin dose, we compared nocturnal metabolic control of 8 c-peptide negative type 1 diabetic patients under three experimental conditions: Continuous usual dose test (1.0 +/- 0.1 u/h); Intermittent half dose test (1.0 +/- 0.1 u/h, 30 min/h); Continuous half dose test (0.5 +/- 0.05 u/h) Five parameters were monitored: blood glucose, plasma free insulin and beta-hydroxy-butyrate, free fatty acid and glycerol plasma level. No significant differences were found between intermittent and continuous half-dose tests. We conclude that, in our experimental conditions, intermittent subcutaneous insulin infusion does not reduce the metabolic degradation induced by insulin dose reduction. [less ▲]

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See detailApproche physique des phénomènes hydrodynamiques
Marchal, Jean ULg

in Revue de l'AIRH (1991)

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See detailMaladie de Crohn : de l'immunopathologie aux perspectives thérapeutiques
Louis, Edouard ULg; Belaiche, Jacques ULg

in Médecine et Hygiène (1991), 49

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See detailThymic cryptocrine signaling and the immune recognition of self neuroendocrine functions
Geenen, Vincent ULg; Martens, Henri ULg; Robert, Françoise et al

in Progress in NeuroEndocrinImmunology (1991), 4

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See detailApport de l'endocrinologie en selection laitiere bovine.
Renaville, Robert ULg; Massart, Serge; Shojae, D. et al

in Animal Genetic Resources Information (1991), (8),

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See detailNeuroendocrine Control of the Onset of Puberty: Secretion of Gonadotrophin-Releasing Hormone from Rat Hypothalamic Explants
Bourguignon, Jean-Pierre ULg; Gerard, Arlette ULg; Fawe, L. et al

in Acta Paediatrica Scandinavica. Supplement (1991), 372

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See detailRelations d'implémentation et transformations autorisées d'une spécification LOTOS
Leduc, Guy ULg

in Réseaux et Informatique Répartie (1991), 1

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See detailAspects chirurgicaux du traitement des affections surrenaliennes.
Meurisse, Michel ULg; Dewandre, J. M.; Pirenne, J. et al

in Acta Chirurgica Belgica (1991), 91(2), 107-11

With the greatly enhanced accuracy of current endocrinologic diagnosis assisted by precise diagnostic imaging, together with greatly enhanced preparation of patients with endocrinopathy for safer ... [more ▼]

With the greatly enhanced accuracy of current endocrinologic diagnosis assisted by precise diagnostic imaging, together with greatly enhanced preparation of patients with endocrinopathy for safer anesthetic and surgical procedure (e.g. adrenal cortical cancers, cortisol and aldosterone producing adenomas and pheochromocytomas), operative procedures can be planned and conducted more precisely. For the surgeon, the strategy for treatment of functional and neoplastic disorders of the adrenal glands has essentially to consider the anatomy of the suprarenal glands, the deleterious effects of hormone excess before and during operation, the presumed nature of incidentally discovered adrenal mass and the size of the tumor. [less ▲]

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See detailAutomatic Determination of Diltiazem and Desacetyldiltiazem in Human Plasma Using Liquid-Solid Extraction on Disposable Cartridges Coupled to Hplc--Part II: Optimization of Liquid-Solid Extraction
Hubert, Philippe ULg; Chiap, Patrice ULg; Crommen, Jacques ULg

in Journal of Pharmaceutical & Biomedical Analysis (1991), 9(10-12), 883-887

An automatic liquid-solid extraction (LSE) procedure to be coupled to HPLC for the determination of diltiazem and desacetyldiltiazem in plasma has been developed. The LSE operations are performed on ... [more ▼]

An automatic liquid-solid extraction (LSE) procedure to be coupled to HPLC for the determination of diltiazem and desacetyldiltiazem in plasma has been developed. The LSE operations are performed on disposable extraction cartridges (DECs) by means of a sample processor equipped with a robotic arm holding a needle through which the different liquids are dispensed. The operating parameters of LSE have been optimized with respect to recovery, detectability and reproducibility by using, whenever possible, aqueous solutions of the analytes. Different kinds of DECs have been tested. For the compounds studied, DECs filled with 50 mg of cyanopropyl silica have been selected. The influence of the pH of the buffer used in the washing step has been studied, leading finally to the selection of the same phosphate buffer (pH 7.4) as in the HPLC mobile phase. The minimum volume of methanol which still gives a nearly complete elution of the analytes from the extraction cartridges has been determined. Under these conditions, a high sensitivity can be obtained without an evaporation step. Moreover, the volume of buffer to be added to the methanolic eluate before injection into the HPLC system has been optimized in such a way that a focusing effect is obtained at the top of the analytical column while the dilution of the extract is minimized. [less ▲]

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See detailManagement of small woods in Belgium.
Rondeux, Jacques ULg

in Quarterly Journal of Forestry (1991), 85(1), 37-42

In Belgium, forest occupies 20 per cent of the total land area. Private forests account for about 52 per cent; they are generally small (averaging about three ha) and their owners are not accustomed to ... [more ▼]

In Belgium, forest occupies 20 per cent of the total land area. Private forests account for about 52 per cent; they are generally small (averaging about three ha) and their owners are not accustomed to basing their decisions on a management plan. However, some attempts to develop co-operation through forestry associations exist and the regional authorities tend to encourage them. Whatever the details of any possible future legislation may be, the principal aim must be the development and introduction of an extremely simple form of management plan (the so-called 'plan simple de gestion') in exchange for assistance to the private owner. [less ▲]

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See detailPulsatile insulin delivery has greater metabolic effects than continuous hormone administration in man: importance of pulse frequency.
Paolisso, G.; Scheen, André ULg; Giugliano, D. et al

in Journal of Clinical Endocrinology and Metabolism (1991), 72(3), 607-15

The aim of this study was to see if the greater effect of insulin on hepatic glucose output when insulin is given using 13-min pulses in man remains when the same amount of insulin is delivered using 26 ... [more ▼]

The aim of this study was to see if the greater effect of insulin on hepatic glucose output when insulin is given using 13-min pulses in man remains when the same amount of insulin is delivered using 26-min pulses. The study was performed on nine male healthy volunteers submitted to a 325 min glucose-controlled glucose iv infusion using the Biostator. The endogenous secretion of pancreatic hormones was inhibited by somatostatin. Three experiments were performed in each subject on different days and in random order. In all cases glucagon was replaced (58 ng min-1). The amounts of insulin infused were identical in all instances and were 0.2 mU kg-1 min-1 (continuous), 1.3 mU kg-1 min-1, 2 min on and 11 min off (13-min pulses) or 2.6 mU kg-1 min-1, 2 min on and 24 min off (26-min pulses). Blood glucose levels and glucose infusion rate were monitored continuously by the Biostator, and classic methodology using D-[3-3H] glucose infusion allowed to study glucose turnover. When compared with continuous insulin, 13-min insulin pulses induced a significantly greater inhibition of endogenous glucose production. This effect disappeared when insulin was delivered in 26-min pulses. We conclude that, in man, an adequate pulse frequency is required to allow the appearance of the greater inhibition of pulsatile insulin on endogenous glucose production. [less ▲]

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See detailColocalization of immunoreactive oxytocin, vasopressin and interleukin-1 in human thymic epithelial neuroendocrine cells
Robert, Françoise; Geenen, Vincent ULg; Schoenen, Jean ULg et al

in Brain, Behavior & Immunity (1991), 5

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See detailLarge-scale eradication of rabies using recombinant vaccinia-rabies vaccine
Brochier, Bernard; Kieny, M. P.; Costy, F. et al

in Nature (1991), 354(19/26 December), 520-521

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See detailThe clonidine test in posttraumatic stress disorder.
Hansenne, Michel ULg; Pitchot, William ULg; Ansseau, Marc ULg

in American Journal of Psychiatry (The) (1991), 148(6), 810-1

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See detailDescription de 70 souches d'Escherichia coli d'origine bovine possédant les gènes des vérotoxines
Pohl, P.; Daube, Georges ULg; Lintermans, P. et al

in Annales de Médecine Vétérinaire (1991), 135

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See detailEffects of exposure to cadmium on calcium metabolism : a population study
Staessen, Jan; Amery, Antoon; Bernard, Alfred et al

in British Journal of Industrial Medicine (1991), 48

The objective was to investigate the hypothesis that environmental exposure to cadmium may affect calcium metabolism in the population at large. The 1987 participants (965 men and 1022 women), from 20 to ... [more ▼]

The objective was to investigate the hypothesis that environmental exposure to cadmium may affect calcium metabolism in the population at large. The 1987 participants (965 men and 1022 women), from 20 to 80 years old, constituted a random sample of the population of four Belgian districts. The urinary excretion of cadmium, a mesure of lifetime exposure, averaged 9.3 nmo/24h in men (range 0.4-324 nmol/24h) and 7.1 nmol/24h (range 0.1-71 nmol/24h) in women. Serum alkaline phosphatase activity and the urinary excretion of calcium correlated significantly and positively with urinary cadmium excretion in both men and women, and serum total calcium concentration negatively with urinary cadmium excretion in men only. The regression coefficients obtained after adjustment for significant covariates indicated that when urinary cadmium excretion increased twofold, serum alkaline phosphatase activity and urinary calcim excretion rose by 3-4% and 0.25 mmol/24h respectively, whereas in men serum total calcium concentration fell by 6 µmol/l. After adjustment for significant covariates the relation between serum total calcium concentration and urinary cadmium excretion was not significant in women. The findings suggest that even at environmental exposure levels calcium metabolism is gadually affected, as cadmium accumulates in the body. The morbidity associated with this phenomenon in industrialised countries remains presently unknown and requires further investigation. [less ▲]

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See detailSpatially continuous processing within a raster based GIS : some examples of geographical models
Donnay, Jean-Paul ULg; Binard, Marc ULg

in Bulletin de la Société belge de Géographie - SOBEG (1991), 2

La représentation d'un territoire en mode raster introduit une discrétisation qui peut être considérée, en première approximation, comme le résultat d'un échantillonnage à deux dimensions de cette surface ... [more ▼]

La représentation d'un territoire en mode raster introduit une discrétisation qui peut être considérée, en première approximation, comme le résultat d'un échantillonnage à deux dimensions de cette surface. Sous cette forme, un attribut spatialement continu constitue une couche de données directement accessible aux systèmes d'information géographique (S.I.G.) hybrides (raster/vecteur). Les avantages de cette représentation sont déjà exploités pour visualiser et traiter des phénomènes physiques surfaciques, tels que les modèles numériques de terrain. Une procédure identique peut être appliquée aux surfaces théoriques issues de l'application de modèles géographiques. En outre, les propriétés du mode raster sont susceptibles d'offrir des solutions graphiques soit plus simples, soit en l'absence de solutions analytiques. Cet article illustre ces avantages sur quelques modèles bien connus de l'analyse spatiale. [less ▲]

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See detailLes courants excito moteurs de basses fréquences. Détermination des durées d'impulsions optimales de stimulation
Vanderthommen, Marc ULg; Kelleter, B.; Crielaard, Jean-Michel ULg

in Kinésitherapie, les Annales (1991), 18(10), 483-484

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See detailPast and Future CFC and other trace gas warming: results from a seasonal climate model
Hauglustaine, Didier A.; Gérard, Jean-Claude ULg

in Annales Geophysicae [= ANGEO] (1991), 9

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See detailQuantitative turbidimetric assay for determining myoglobin evaluated.
Delanghe, J.; Chapelle, Jean-Paul ULg; el Allaf, M. et al

in Annals of Clinical Biochemistry (1991), 28 ( Pt 5)

A recently introduced turbidimetric immunoassay using shell/core particles for determination of myoglobin (Turbiquant Myoglobin, Behringwerke, Marburg, Germany) was evaluated on the Behring Turbitimer ... [more ▼]

A recently introduced turbidimetric immunoassay using shell/core particles for determination of myoglobin (Turbiquant Myoglobin, Behringwerke, Marburg, Germany) was evaluated on the Behring Turbitimer analyzer. Intra-assay CV varied between 1.0% and 3.2%; interassay CV was between 2.0% and 3.6%. Linear results were obtained between 2.8 nmol/L and 36.7 nmol/L. Manual dilution in saline solution allowed measurement of myoglobin concentrations up to 25,400 nmol/L. In the tested range, no high-dose 'hook' effect was observed. Haemolysis interfered with the assay when haemoglobin concentrations exceeded 2 g/L. The occurrence of error codes due to the presence of triglycerides was shown to depend on particle size. Repeat assays on diluted samples were necessary at triglyceride concentrations of 2.3 mmol/L for post-prandial chylomicrons (200-1000 nm), and at 11-31 mmol/L for very-low density lipoprotein-triglycerides (80-200 nm). No significant interferences of haptoglobin, bilirubin, iodine containing contrast media, and rheumatoid factors were detected for the assay. Treatment of lipaemic samples with Lipoclean (Behringwerke) resulted in lower myoglobin values. Simultaneously drawn serum and heparin-plasma samples gave comparable myoglobin results. However, values obtained in EDTA- or citrate-treated plasma samples occasionally differed significantly from serum values. The upper reference limit for myoglobin concentration was 4.2 nmol/L. The turbidimetric assay correlated well with a radioimmunoassay (Byk-Sangtec; r = 0.892) and with the automated nephelometric assay (Behringwerke; r = 0.944). Values obtained by turbidimetry were comparable to those obtained by the latex agglutination test (Behringwerke). [less ▲]

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See detailMétoda Marginilor Rigidizate
Rigo, Philippe ULg; Mircea Soare, V.

in Studii şi Cercetări de Mecanică Aplicată (1991)

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See detailDe la raison à l'imaginaire:méthode et recherche de sens
Robert, Jocelyne ULg

in Revue de l'Institut de Sociologie (1991)

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See detailBiodegradation, drug release mechanism and physiological activity of a protein's sustained release system
Demoustier, M. M.; Beckers, Jean-François ULg; Legras, R. et al

in Proceedings International Symposium Control. Rel.Bioact. Mater. (1991)

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See detailFast double antibody radioimmunoassay of human granulocyte myeloperoxidase and its application to plasma.
Pincemail, Joël ULg; Deby-Dupont, G.; Deby, Christiane ULg et al

in Journal of Immunological Methods (1991), 137(2), 181-191

The haem enzyme myeloperoxidase (MPO) (EC 1.11.1.7) with a spectral A430/A280 ratio greater than 0.7 and a specific activity of 125 U/mg was purified from isolated human neutrophils. To obtain a ... [more ▼]

The haem enzyme myeloperoxidase (MPO) (EC 1.11.1.7) with a spectral A430/A280 ratio greater than 0.7 and a specific activity of 125 U/mg was purified from isolated human neutrophils. To obtain a radioimmunoassay (RIA) for this enzyme, a specific antiserum against human neutrophil MPO was raised in rabbits and used at an initial dilution of 1/10,000. MPO labelled with 125iodine by a technique of self-labelling in the presence of H2O2, had a specific activity of 24 mCi/mg. After incubation at room temperature (2 h) and separation by double antibody precipitation in the presence of polyethylene glycol, the sensitivity of the RIA was 21 ng/ml. The RIA showed good precision and accuracy with intra- and interassay coefficients of variation of less than 7% for MPO concentrations ranging from 100 to 800 ng/ml, and satisfactory recoveries of known amounts of exogenous MPO in plasma. For the measurement of MPO in blood, the best sampling technique was to collect blood into EDTA. Rapid centrifugation (within 20 min) was necessary for blood collected into heparin. Mean MPO values in normal individuals were 340 +/- 98 ng/ml in EDTA plasma (n = 152) and 332 +/- 82 ng/ml in heparinized plasma (n = 34). When MPO was measured 12-6 h after injury in critically ill patients high values (above 1000 ng/ml) were found in 6/15 patients with multiple injuries. In patients with sepsis (n = 22), MPO values were always above 1000 ng/ml. [less ▲]

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See detailAdult-like neurobehavioral changes induced by a GABA-A agonist in infant and weanling mice
Tirelli, Ezio ULg; Jodogne, C.; Perikel, J.

in Developmental Brain Research (1991), 61(2), 207-215

Neurobehavioral responsivity to peripherally injected muscimol, a gamma-aminobutyric acid-A (GABA-A) agonist, was assessed in infant (14-day-old), weanling (20-day-old), and young adult (53-day-old ... [more ▼]

Neurobehavioral responsivity to peripherally injected muscimol, a gamma-aminobutyric acid-A (GABA-A) agonist, was assessed in infant (14-day-old), weanling (20-day-old), and young adult (53-day-old) outbred male mice. In Exp 1, relatively high doses of muscimol (0.05-0.40 mg/kg in developing and 0.50-3 mg/kg in adult Ss) were found to dose-dependently induce solid catalepsy and ataxia. In Exp 2, the GABA agonist was injected in dose ranges that included relatively small concentrations to assess its excitatory properties, observable in adults, on rearing and locomotion in developing mice. Levels of rearing and especially locomotion were enhanced at low doses (0.025-0.050 mg/kg in developing and 1.3-2.9 mg/kg in adult mice) and inhibited at higher ones (0.150 mg/kg in developing and 1.9 and 2.5 mg/kg in adult mice). ((c) 1997 APA/PsycINFO, all rights reserved) [less ▲]

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See detailCloning and nucleotide sequencing of the gene encoding the beta-lactamase from Citrobacter diversus
Perilli, Mariagrazia; Franceschini, Nicola; Segatore, Bernardetta et al

in FEMS Microbiology Letters (1991), 83

The gene coding for the class A beta-lactamase of Citrobacter diversus has been cloned and sequenced. It contains the information for a 294-amino-acid precursor protein, including a 27-residue N-terminal ... [more ▼]

The gene coding for the class A beta-lactamase of Citrobacter diversus has been cloned and sequenced. It contains the information for a 294-amino-acid precursor protein, including a 27-residue N-terminal signal peptide. The deduced sequence of the N-terminal portion of the mature protein is in excellent agreement with that determined by microsequencing of the protein and readily explains the pI differences observed between the naturally occurring forms I and II of the enzyme. The sequence of the mature protein exhibits a very high degree of similarity with that of the Klebsiella oxytoca class A beta-lactamase [less ▲]

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See detailLaminin receptor complementary DNA-deduced synthetic peptide inhibits cancer cell attachment to endothelium.
Castronovo, Vincenzo ULg; Taraboletti, G.; Sobel, M. E.

in Cancer Research (1991), 51(20), 5672-8

Stable attachment of cancer cells to the endothelium is a key step in the formation of metastasis. In this study, we have investigated the possibility that interaction between laminin and its Mr 67,000 ... [more ▼]

Stable attachment of cancer cells to the endothelium is a key step in the formation of metastasis. In this study, we have investigated the possibility that interaction between laminin and its Mr 67,000 high-affinity receptor (67 LR) could play a major role in this process. Scatchard analysis of laminin-binding studies showed that bovine aortic endothelial cells exhibit 46,000 high-affinity receptors that mediate, at least in part, the attachment of highly invasive melanoma cells. This endothelial cell-melanoma cell interaction was significantly inhibited by soluble laminin and by anti-laminin antibodies. Peptide G, an eicosapeptide derived from the complementary DNA sequence of the 67 LR precursor (IPCNNKGAHSVGLMWWMLAR) that specifically binds to laminin and presumably contains the active ligand-binding site of the receptor, specifically prevented attachment of the melanoma cells to both the bovine aortic endothelial cell monolayer and human umbilical vein endothelium. Thus, peptide G may selectively interfere with the metastatic cascade by inhibiting tumor cell attachment to endothelium via the laminin-67 LR pathway and is a potential new antimetastatic agent. [less ▲]

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See detailThe Photoionization of Ammonia revisited. The Vibrational Autoionization of NH3 and its three Isotopomers in the 10-12 eV photon energy range.
Locht, Robert ULg; Leyh, Bernard ULg; Denzer, W. et al

in Chemical Physics (1991), 155

The photoionzation efficiency curves of NH3 and its three isotopomers have been investigated in the photon energy range of the first ionized state. From the analysis of the corresponding vibrational ... [more ▼]

The photoionzation efficiency curves of NH3 and its three isotopomers have been investigated in the photon energy range of the first ionized state. From the analysis of the corresponding vibrational structure, wavenumbers and anharmonicity constants are deduced. The detailed investigation of the abundant autoionization structure tends to show the adiabatic ionization energy to be 10.072+/-0.010 eV for NH3, NH2D and NHD2 and 10.083+/-0.010 eV for ND3. All autoionization features were classified in vibrational progressions (nu2 bending mode) belonging to nasa1 (or nd) and npe (n=5, 6, 7) Rydberg series. Vibrational autoionization occurs through Delta v transitions up to -9. A qualitative analysis of the intensity distribution of these series strongly supports that transitions involving odd Delta v values are favoured. This observation can be understood by applying group theoretical considerations to the theory of vibrational autoionization. [less ▲]

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See detailMalignant cell attachment to endothelium of ex vivo perfused human umbilical vein. Modulation by platelets, plasma and fibronectin.
Lewalle, J. M.; Castronovo, Vincenzo ULg; Goffinet, G. et al

in Thrombosis Research (1991), 62(4), 287-98

The success of blood-born metastatic spread depends upon a key event: the tumor cell arrest and attachment to the host organ vasculature. In the present study, we have investigated interactions between ... [more ▼]

The success of blood-born metastatic spread depends upon a key event: the tumor cell arrest and attachment to the host organ vasculature. In the present study, we have investigated interactions between several normal and cancer cell lines and vascular endothelium in a model of ex vivo perfusion of human umbilical vein. In this system, hydrodynamic parameters are monitored and endothelial cells are kept in their original environment known to modulate their phenotype. Metastatic tumor cell adhesion to the perfused endothelium was found to be significantly higher than that of normal cells tested. Platelets and soluble plasma factors including fibronectin promoted tumor cell arrest and adhesion to endothelium. Altogether our results indicate that the ex vivo perfusion of human umbilical vein allows the study of the interactions between malignant tumor cells, circulating plasma or blood cells and the endothelium during blood-born metastatic spread. [less ▲]

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