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See detailLe visage de l'Autre ou la conscience du regard
Mélon, Marc-Emmanuel ULg

in Revue belge du cinéma (1997), 41

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See detailOn the use of HF as a reference for the comparison of stratospheric observations and models
Chipperfield, M. P.; Burton, M.; Bell, W. et al

in Journal of Geophysical Research (1997), 102(11D), 12901-12919

Hydrogen fluoride (HF) is often used as a simple reference for other column observations of chemically active stratospheric species. However, seasonal and shorter timescale variations in column HF make ... [more ▼]

Hydrogen fluoride (HF) is often used as a simple reference for other column observations of chemically active stratospheric species. However, seasonal and shorter timescale variations in column HF make its use as a reference more complicated. In this paper we characterize the expected magnitude of these variations in HF, and variations of ratio quantities involving HF, using a two-dimensional (2-D) photochemical model and two versions of a three-dimensional (3-D) transport model. The 2-D model predicts that the column ratios HNO3/HF and HCl/HF increase from midlatitudes to the tropics, although this is very sensitive to HCl and HNO3 abundances in the tropical upper troposphere. Seasonal variations in vertical motion modifys the predicted ratios; for example, wintertime descent at high latitudes decreases HCl/HF. The ratio HNO3/HF at high latitudes is strongly modified by seasonal variations in the chemical partitioning of the odd nitrogen (NOy) species. We compare these model predictions with ground-based Fourier transform infrared spectroscopy (FTIR) observations of HF along with HCl, ClONO2 and HNO3 obtained at eight northern hemisphere sites between October 1994 and July 1995. We investigate quantitatively how HF can be used as a tracer to follow the evolution of observations at a single station and to intercompare results from different stations or with photochemical models. The magnitude of the 3-D model HF column agrees well with the observations, except on some occasions at high latitudes, giving indirect support for the important role of COF2 in the stratospheric inorganic fluorine budget. The observed day-to-day variability in the column ratios HCl/HF and HNO3/HF is much larger at high latitudes. This variability is reproduced in the 3-D models and is due to horizontal motion. Short timescale vertical displacement of the species profiles is estimated to have a small effect on the column ratios. In particular, we analyze the usefulness of the observed column ratio (ClONO2 + HCl)/HF as an indicator for chlorine activation. Current measurement uncertainties limit the degree of activation which can be unambiguously detected using this observed quantity, but we can determine that chlorine-activated air was observed above Aberdeen (58 degrees N) on 6 days in late January 1995. [less ▲]

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See detailThe Nucleotide Sequence Of Saccharomyces Cerevisiae Chromosome Vii
Tettelin, H.; Carbone, Mla.; Albermann, K. et al

in Nature (1997), 387(6632),

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See detailTowards interbreed IBD fine mapping of the mh locus: double-muscling in the Asturiana de los Valles breed involves the same locus as in the Belgian Blue cattle breed.
Dunner, S.; Charlier, Carole ULg; Farnir, Frédéric ULg et al

in Mammalian Genome : Official Journal of the International Mammalian Genome Society (1997), 8(6), 430-5

The Spanish "Asturiana" cattle breed is characterized by the segregation of a genetically determined muscular hypertrophy referred to as double-muscling or "culones". We demonstrate by linkage analysis ... [more ▼]

The Spanish "Asturiana" cattle breed is characterized by the segregation of a genetically determined muscular hypertrophy referred to as double-muscling or "culones". We demonstrate by linkage analysis that this muscular hypertrophy involves the mh locus previously shown to cause double-muscling in the Belgian Blue cattle breed, pointing towards locus homogeneity of this trait across both breeds. Moreover, using a twopoint and multipoint maximum likelihood approach, we show that flanking microsatellite markers are in linkage disequilibrium with the mh locus in both breeds albeit with different alleles. Finally, we discuss how allelic homogeneity across breeds might be exploited to achieve efficient genetic fine-mapping of the mh locus. [less ▲]

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See detailStability margins of nonlinear receding horizon control via inverse optimality
Magni, L.; Sepulchre, Rodolphe ULg

in Systems & Control Letters (1997), 32(4), 241-245

Using the nonlinear analog of the Fake Riccati equation developed for linear systems, we derive an inverse optimality result for several receding horizon control schemes. This inverse optimality result ... [more ▼]

Using the nonlinear analog of the Fake Riccati equation developed for linear systems, we derive an inverse optimality result for several receding horizon control schemes. This inverse optimality result unifies stability proofs and shows that receding horizon control possesses the stability margins of optimal control laws. [less ▲]

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See detailDissociations between the processing of proper and common names
Brédart, Serge ULg; Brennen, T.; Valentine, T.

in Cognitive Neuropsychology (1997), 14(2), 209-217

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See detaill'application des dispositions pénales générales en matière bancaire et boursière
Flore, Daniel ULg

in Revue de Droit Commercial Belge [= RDC] = Tijdschrift voor Belgisch Handelsrecht [=TBH] (1997), 4

L'objectif est de dresser un cadre pénal général pour l'approche du droit pénal bancaire et boursier.

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See detailGénération innommable
Demoulin, Laurent ULg

in Textyles : Revue des Lettres Belges de Langue Française (1997), 14

Evocation de tendances romanesque ayant émergé dans les années 1980 et 1990 envisagées au moyen des notions discutables et discutées de "minimalisme" et de "postmodernité".

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See detailOccult genital herpes presenting as an endometrial infection detected at delivery: a report of two cases
Aghazarian, Saro; Nikkels, Arjen ULg; Grodos, Jacques et al

in Journal of the European Academy of Dermatology & Venereology (1997), 9

Background: The prevalence and clinical implications of asymptomatic genital herpes remain elusive. Objective/aim: We report two cases of clinically asymptomatic intrautcrine herpes simplex virus II (HSV ... [more ▼]

Background: The prevalence and clinical implications of asymptomatic genital herpes remain elusive. Objective/aim: We report two cases of clinically asymptomatic intrautcrine herpes simplex virus II (HSV-II) infection in order to discuss their pathological significance and demonstrate the potential utility of specific DNA probes and antibodies. Methods: Standard histology, immunohistochemistry (IHC) and in situ hybridization (ISH) were applied to formalin-tixed. paraffin-em bedded lissue sections of curettage specimens from women presenting deciditalised fragments retention after normal delivery. Results: Hisiological analysis revealed a focal clearing of endometrial epithelial cell nuclei, suggesting a viral etiology. ISH and IHC with differetit DNA probes or antibodies confirmed the diagnosis of HSV-II infection at the time of specimen collection. Clinical signs of muco-cutaneous involvement in the mothers and of neonatal HSV infection were not observed. Conclusion: These findings suggest that intrauterinc HSV-II infection is not always associated with disease. The IHC and ISH methods can be helpful to a.ssess the diagnosis of HSV-II intrauterine infections in the presence of optically clear cndotTietrial nuclei. Whether or not such HSV-II occult infection may be associated with viral shedding and risk of sexual transtnission was not evaluated in the present study. © 1997 Elsevier Science B.V. [less ▲]

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See detail«Sui manoscritti veneziani del Foucon de Candie»
Moreno, Paola ULg

in Bulletin Bibliographique de la Société Rencesvals (1997)

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See detailCharacterization of Clostridium perfringens isolated from necrotic enteritis of fowls.
Das, B. C.; Dutta, G. N.; Daube, Georges ULg et al

in Indian Journal of Animal Sciences (The) (1997), 67

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See detailThe yeast genome directory.
Goffeau, A.; Hilger, F.; Portetelle, Daniel ULg et al

in Nature (1997), 387(5),

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See detailThe Complete Genome Sequence Of The Gram-Positive Bacterium Bacillus Subtilis
Kunst, F.; Ogasawara, N.; Moszer, I. et al

in Nature (1997), 390(6657), 249-256

Bacillus subtilis is the best-characterized member of the Gram-positive bacteria. Its genome of 4,214,810 base pairs comprises 4,100 protein-coding genes. Of these protein-coding genes, 53% are ... [more ▼]

Bacillus subtilis is the best-characterized member of the Gram-positive bacteria. Its genome of 4,214,810 base pairs comprises 4,100 protein-coding genes. Of these protein-coding genes, 53% are represented once, while a quarter of the genome corresponds to several gene families that have been greatly expanded by gene duplication, the largest family containing 77 putative ATP-binding transport proteins. In addition, a large proportion of the genetic capacity is devoted to the utilization of a variety of carbon sources, including many plant-derived molecules. The identification of five signal peptidase genes, as well as several genes for components of the secretion apparatus, is important given the capacity of Bacillus strains to secrete large amounts of industrially important enzymes. Many of the genes are involved in the synthesis of secondary metabolites, including antibiotics, that are more typically associated with Streptomyces species. The genome contains at least ten prophages or remnants of prophages, indicating that bacteriophage infection has played an important evolutionary role in horizontal gene transfer, in particular in the propagation of bacterial pathogenesis. [less ▲]

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See detailFormation of long-wavelength chlorophyllide (Chlide695) is required for the assembly of Photosystem II in etiolated barley leaves
Franck, Fabrice ULg; Eullaffroy, P.; Popovic, R.

in Photosynthesis Research (1997), 51(2), 107-118

Chlorophyll(ide) spectroscopic properties and Photosystem II assembly, monitored by 77 K variable fluorescence, were studied in etiolated barley leaves as a function of the extent of protochlorophyllide ... [more ▼]

Chlorophyll(ide) spectroscopic properties and Photosystem II assembly, monitored by 77 K variable fluorescence, were studied in etiolated barley leaves as a function of the extent of protochlorophyllide photoreduction by a single millisecond light flash of different intensities. Variable fluorescence, measured 2 hours after the flash, was only detected when the extent of phototransformation was higher than a threshold value of 0.4. Its development paralleled the formation of a chlorophyll emission component at 685 nm, which itself derived from long-wavelength chlorophyllide with an emission maximum at 695 nm. At low flash intensities, short-wavelength chlorophyllide forms preferentially accumulated and no Photosystem II fluorescence was detected after 2 hours. Chlorophyllide esterification was independent of the extent of phototransformation. These results suggested that the formation of long-wavelength chlorophyllide was essential for further assembly of Photosystem II. This interpretation was strengthened by the observed inhibition of both long-wavelength chlorophyllide formation and of variable fluorescence development in leaves treated with 6-aminolevulinic acid or in untreated leaves subjected to repeated flashes of low intensity. [less ▲]

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See detailEffect of diet and bST on mRNA for IGF-I binding proteins (BP)-2 and -3 in dairy cattle
Sharma, B. K.; Vandehaar, M. J.; Tucker, H. A. et al

in Journal of Dairy Science (1997), 80(suppl 1), 176

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See detailThe faint young sun climatic paradox: Influence of the continental configuration and of the seasonal cycle on the climatic stability
Longdoz, Bernard; François, Louis ULg

in Global and Planetary Change (1997), 14(3-4), 97-112

A quasi-three-dimensional climate model is used to study the early state of the Earth when the solar luminosity was 70% of the present value, Usually, climatic simulations going back to this period lead ... [more ▼]

A quasi-three-dimensional climate model is used to study the early state of the Earth when the solar luminosity was 70% of the present value, Usually, climatic simulations going back to this period lead to a completely frozen planet contrasting with the geologic evidences of sedimentary rock formation and thus of the presence of liquid water at the surface of the continents during the Archean (4.6-2.5 billion years before present). Here, several model simulations are performed for solar luminosities varying between 0.7 and 1 times the present value. Using the present-day continental configuration and taking the seasonal cycle into account, a steady state is found in which glaciation is complete but snow covers only some oceanic coasts, leaving the continents essentially snow-free. As a result, the albedo of the continental area is strongly reduced compared to that of the frozen ocean, Some continental temperatures can almost reach the freezing point of water in summer (-1 degrees C in the center of Eurasia). This result can be explained by the behavior of the detailed hydrologic cycle included in the model. During the decrease of the solar luminosity, the jump to a completely frozen Earth occurs when the solar luminosity reaches 0.86 times its present value. The behavior of the climatic system is substantially different with a global ocean configuration. In the absence of land surfaces, the meridional heat transport, explicitly calculated, is less effective and the glaciation of a model latitude zone does not lead to the glaciation of its equatorward neighbor. The climate instability is relatively local and the jump to the completely frozen state is much more progressive than in the case of the modem continental configuration. The role of the seasonal cycle in the paleoclimatic simulation is also studied. Due to the non-linearity of the model, removing the seasonal cycle drives the system to an increase of the annual mean planetary albedo and to a decrease of the relative value (0.82) of the critical solar luminosity at which the jump to the completely frozen solution occurs. [less ▲]

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See detailStudies on the O-J-I-P transient of chlorophyll fluorescence in relation to photosystem II assembly and heterogeneity in plastids of greening barley
Barthelemy, X.; Popovic, R.; Franck, Fabrice ULg

in Journal of Photochemistry and Photobiology B : Biology (1997), 39(3), 213-218

The polyphasic variable fluorescence in saturating light (O-J-I-P transient, Strasser et al. (1995) Photochem. Photobiol. 61: 21-42) has been investigated in etiochloroplasts during the greening of ... [more ▼]

The polyphasic variable fluorescence in saturating light (O-J-I-P transient, Strasser et al. (1995) Photochem. Photobiol. 61: 21-42) has been investigated in etiochloroplasts during the greening of etiolated leaves of Hordeum vulgare. The initial photochemical phase (O-J) due to reduction of the primary quinone acceptor Q(A) was found to represent a constant proportion (65-70%) of total variable fluorescence independent of greening time. The partial fluorescence quenching in the Q(A)-reduced state seems, therefore, to represent a basic property of PSII electron transport. The biphasic character of the slower J-I-P transient due to reduction of the plastoquinone pool developed progressively during the first hours of greening. in the same period of lime the proportion and rate constant of rapid PSII alpha sub-population increased, as calculated from the induction curve in the presence of DCMU. Etiochloroplasts or chloroplasts resuspended in low salt medium showed a low I level, which was restored upon readdition of 5 mM MgCl2 and NaCl. Salts also increased the apparent proportion of PSII alpha. These results suggest that the J-I and I-P phases of the induction curve are related to different rates of plastoquinone photoreduction by two distinct PSII populations. The effects of DMQ and of DCBQ on the O-J-I-P transient were also studied in (etio-)chloroplasts, In addition to the already reported quenching of the initial (F-0) and variable fluorescence by DCBQ, a slow fluorescence increase phase was found to appear upon the addition of DCBQ but not of DMQ. The latter observations confirm that DCBQ differs from DMQ by its higher efficiency as PSII electron acceptor. (C) 1997 Elsevier Science S.A. [less ▲]

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See detailIntensivemedizinische Probleme nach kardiochirurgischen Eingriffen in der Neugeborenenperiode
Hörnchen, H.; Dreuw, M.; Merz, U. et al

in Monatsschrift fur Kinderheilkunde (1997), 145

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See detailReprésentation de l'espace ouvert dans un système d'information de projet urbain
Dupagne, A.; Teller, Jacques ULg

in Ingénierie des Systèmes d'Information (1997), 5(2), 219-240

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See detailLes antidotes en Médecine Vétérinaire
Delaunois, A.; Plume, Ch; Ansay, M. et al

in Annales de Médecine Vétérinaire (1997), 141

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See detailRyle et la phénoménologie
Leclercq, Bruno ULg

in Recherches Husserliennes (1997), 7

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See detailField observations of the spawning behaviour of European grayling
Darchambeau, François ULg; Poncin, Pascal ULg

in Journal of Fish Biology (1997), 51(5), 1066-1068

During observations of the River Ourthe, Belgium, 70 spawning attempts were recorded during the reproductive period of the European grayling. Thirty-six per sent of the spawning attempts proceeded to ... [more ▼]

During observations of the River Ourthe, Belgium, 70 spawning attempts were recorded during the reproductive period of the European grayling. Thirty-six per sent of the spawning attempts proceeded to completion, while interference by another male may explain some of the incomplete acts. Sneaking behaviour was observed and one spawning act included two males and one female. (C) 1997 The Fisheries Society of the British Isles. [less ▲]

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See detailQuelques données inédites sur l'accroissement des peuplements de hêtre en Région wallonne.
Rondeux, Jacques ULg; Lecomte, H.; Florkin, P. et al

in Silva Belgica (1997), 104(5), 7-14

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See detailBulletin bibliographique de la Société Rencesvals, 1996-1997
Horrent, Jacques ULg; Henrard, Nadine ULg

in Bulletin bibliographique de la Société Rencesvals (1997), (28), 189

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See detailPhosphorylation of the Bovine Leukemia Virus transactivator p34Tax is required for transformation but not for transactivation.
Kettmann, Richard ULg; Grimonpont, C.; Kerkhofs, Pierre et al

in FASEB Journal (1997), 11(9), 1179

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See detailA bryological survey of the Brussels Capital Region (Belgium)
Vanderpoorten, Alain ULg

in Scripta Botanica Belgica (1997), 14

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See detailCo-regulation and physical association of the 67-kDa monomeric laminin receptor and the alpha6beta4 integrin.
Ardini, E.; Tagliabue, E.; Magnifico, A. et al

in Journal of Biological Chemistry (1997), 272(4), 2342-5

The interactions between tumor cells and laminin or other components of the extracellular matrix have been shown to play an important role in tumor invasion and metastasis. However, the role of the ... [more ▼]

The interactions between tumor cells and laminin or other components of the extracellular matrix have been shown to play an important role in tumor invasion and metastasis. However, the role of the monomeric 67-kDa laminin receptor (67LR) remains unclear. We analyzed the regulation of 67LR expression under different culture conditions with respect to the expression of other well characterized laminin receptors. In A431 cells treated with laminin for different time periods, the regulation of 67LR expression correlated with expression of the alpha6 integrin subunit but not with the expression of other laminin receptors. Moreover, cytokine treatment resulted in down-modulated expression of the alpha6 integrin subunit and the 67LR. Co-regulation of the expression of the two receptors was further suggested by the observation that specific down-modulation of the alpha6-chain by antisense oligonucleotides was accompanied by a proportional decrease in the cell surface expression of 67LR. Biochemical analyses indicated co-immunoprecipitation of 67LR and the alpha6 subunit with an anti-alpha6 but not an anti-beta1 monoclonal antibody. Co-regulation of 67LR and alpha6 subunit expression, together with the physical association between the two receptors, supports the hypothesis that 67LR is an auxiliary molecule involved in regulating or stabilizing the interaction of laminin with the alpha6beta4 integrin. [less ▲]

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See detailPresence of pap-, sfa- and afa-related sequences in necrotoxigenic Escherichia coli isolates from cattle : evidence for new variants of the AFA family
Mainil, Jacques ULg; Jacquemin, E.; Hérault, F. et al

in Canadian Journal of Veterinary Research = Revue Canadienne de Recherche Vétérinaire (1997), 61

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See detailProduction and activation of matrix metalloprotease-9 (MMP-9) by HL-60 promyelocytic leukemia cells
Devy, L.; Noël, Agnès ULg; Baramova, E. et al

in Biochemical and Biophysical Research Communications (1997), 238

Human promyelocytic HL-60 cells have been used as a model of acute leukemia to investigate the expression and the regulation of matrix metalloproteases (MMPs), known to contribute to the degradation of ... [more ▼]

Human promyelocytic HL-60 cells have been used as a model of acute leukemia to investigate the expression and the regulation of matrix metalloproteases (MMPs), known to contribute to the degradation of extracellular matrix components. As shown by gelatin zymography, HL-60 cells constitutively released significant amounts of proMMP-9 (92 kDa) and moderate amounts of proMMP-2 (72 kDa). Furthermore, casein zymography confirmed the presence of serine proteases in the form of pro-urokinase. Activation of proMMP-9 was dependent on the plasminogen activator/plasmin (PA/plasmin) system and was inhibited by aprotinin. MMP-9 was only detected in cellular extracts or conditioned media incubated with HL-60 cells, indicating that cells are essential to the activation process. Addition of plasminogen increased by 3-fold the basal invasive rate of these cells across a matrigel layer (2.1%versus0.7% in control cells after 4 h of incubation). Taken together, these results indicate that HL-60 cells exhibit an autocrine activation mechanism of proMMP-9 via the PA/plasmin system and that activation of proMMP-9 increases their invasive potential [less ▲]

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See detailStructural And Functional Properties Of The 154-171 Wild-Type And Variant Peptides Of Human Lecithin-Cholesterol Acyltransferase
Peelman, F.; Goethals, M.; Vanloo, B. et al

in European Journal of Biochemistry (1997), 249(3), 708-15

The 154-171 segment of the human lecithin-cholesterol acyltransferase (LCAT) enzyme was identified as the most stable amphipathic helix in the LCAT sequence. Its mean hydrophobicity, hydrophobic moment ... [more ▼]

The 154-171 segment of the human lecithin-cholesterol acyltransferase (LCAT) enzyme was identified as the most stable amphipathic helix in the LCAT sequence. Its mean hydrophobicity, hydrophobic moment and its orientation at a lipid/water interface are similar to those of some of the helical repeats of apolipoprotein A-IV and E. This domain was therefore proposed as a candidate peptide accounting for the association between LCAT and its lipid substrate. To investigate this hypothesis we synthesized the LCAT-(154-171)-peptide, two variants containing the natural Y156N and R158C mutations and a variant with increased hydrophobicity through Y156I, L160I, L163I and Y171W substitutions. The structural and lipid-binding properties of these synthetic peptides were investigated by turbidity, fluorescence, electron microscopy and circular dichroism. The wild-type peptide, the R158C variant in its dimeric form, as well as the more hydrophobic peptide, associated with phospholipids, whereas the Y156N and the R158C variant in its monomeric form did not. However, only the complexes generated with the hydrophobic variant were stable enough to resist dissociation during gel filtration. The wild-type peptide and hydrophobic variant formed discoidal complexes with dimyristoylglycerophosphocholine (Myr2GroPCho) as shown by negative staining electron microscopy. Comparison of the properties of the wild-type and hydrophobic variant LCAT-(154-171)-peptide stresses the contribution of the hydrophobic face of the amphipathic helix to the formation and stabilization of the peptide/lipid complexes. This is further confirmed by the decreased affinity of the Y156N variant peptide for lipids, as this mutation decreased the mean hydrophobicity of the hydrophobic face of the amphipathic helix. These results support the hypothesis that the 154-171 segment of LCAT might be involved in the interaction of the enzyme with its lipid substrate and suggest that the decreased activity of the Y156N natural LCAT mutant might result from a decreased affinity of this mutant for lipids. [less ▲]

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See detailNon délivrance et infécondité: intérêts de l’étiproston et du dosage de la PAGI (pregnancy-associated glycoprotein I) au cours du postpartum chez la vache.
Zaiem, I.; Tainturier, D.; Ben Othmen, H. et al

in Revue de Médecine Vétérinaire (1997), 148(8-9), 725-732

Sixty Prim'holstein cows with retained placenta for more than 24 hours after parturition, were shared in three groups of 20 cows each. All cows were delivred manually 24 to 36 hours post partum and ... [more ▼]

Sixty Prim'holstein cows with retained placenta for more than 24 hours after parturition, were shared in three groups of 20 cows each. All cows were delivred manually 24 to 36 hours post partum and received local treatment with 1 g of oxytetracyclin. Cows in group 1 received two intra-muscular injections of 5 mg etiproston on day of manual delivery (D1) and 15 days after (D15). Cows on group II received only one etiproston administration (D1), and cows in group III remained untreated. Ratios of delayed uterine involution were respectively 20, 40 and 55 % in groupsI,II and III(I<0.05;II<0.005). PAGI concentrations were checked 15 days after parturition and were significantly higher in cows affected by delayed uterine involution (p < 0.05). V-IAF intervals were significantly (p < 0.05) different between groups I (58 days), II (102 days) and III(143 days). [less ▲]

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See detailElastic vector-meson production at HERA
Cudell, Jean-René ULg; Royen, I.

in Physics Letters B (1997), 397

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See detailQuantitative estimation of estrogen and androgen receptor-immunoreactive cells in the forebrain of neonatally estrogen-deprived male rats.
Bakker, Julie ULg; Pool, C. W.; Sonnemans, M. et al

in Neuroscience (1997), 77(3), 911-9

Using quantitative immunocytochemical procedures, the total number of estrogen and androgen receptors was estimated in a large number of hypothalamic and limbic nuclei of male rats, in which brain ... [more ▼]

Using quantitative immunocytochemical procedures, the total number of estrogen and androgen receptors was estimated in a large number of hypothalamic and limbic nuclei of male rats, in which brain estrogen formation was inhibited neonatally by treatment with the aromatase inhibitor 1,4,6-androstatriene-3,17-dione. The highest densities of estrogen receptor immunoreactivity were observed in the periventricular preoptic area and the medial preoptic area. Neonatally estrogen-deprived males showed a higher estrogen receptor immunoreactivity than control males in the periventricular preoptic area and the ventrolateral portion of the ventromedial nucleus of the hypothalamus, i.e. those brain areas in which sex differences have been reported, with female rats showing a greater estrogen binding capacity than male rats. The highest densities of androgen receptor immunoreactivity were found in the septohypothalamic nucleus, the medial preoptic area, the posterior division of the bed nucleus of the stria terminalis and the posterodorsal division of the medial amygdaloid nucleus. No significant differences in distribution or total numbers of androgen receptors were found between neonatally estrogen-deprived males and control males. These findings suggest that neonatal estrogens, derived from the neural aromatization of testosterone, are involved in the sexual differentiation of the estrogen receptor system in the periventricular preoptic area and the ventromedial hypothalamus. The role of neonatal estrogens in the development of the forebrain androgen receptor system is less clear. [less ▲]

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See detailBovine Herpesvirus 1-Induced Apoptosis Occurs At The G0/G1 Phase Of The Cell Cycle
Hanon, Emilien ULg; Hoornaert, S.; Dequiedt, Franck ULg et al

in Virology (1997), 232(2), 351-358

We have previously shown that bovine herpesvirus 1 (BHV-1), even when inactivated, induces apoptotic cell death in mitogen-stimulated bovine peripheral blood mononuclear cells (PBMCs) (Hanon et al., 1996 ... [more ▼]

We have previously shown that bovine herpesvirus 1 (BHV-1), even when inactivated, induces apoptotic cell death in mitogen-stimulated bovine peripheral blood mononuclear cells (PBMCs) (Hanon et al., 1996, J. Virol. 70, 4116-4120). In order to gain insight into this process, we have investigated the cell cycle phase at which BHV-1 induces apoptosis in PBMCs. Our results show that the percentage of cells that progress through the S phase was always lower in BHV-1-infected PBMCs than in control cells. This effect was not due to a defective activation of mitogen-stimulated PBMCs since BHV-1 only slightly affected the percentage of cells expressing BoCD25, a well-known lymphocyte activation marker. Furthermore, mimosine and cyclosporine A, two chemicals that inhibit entry into the S phase of the cell cycle by different pathways, did not affect the ability of BHV-1 to induce apoptosis. BHV-1-induced apoptosis also occurred in unstimulated PBMCs and interestingly, this was associated with the expression of c-myc and BoCD25 proteins both of which are related to cell cycle progression. All together, these data provide evidence demonstrating that BHV-1-induced apoptosis occurs at the G0/G1 phase of the cell cycle. [less ▲]

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See detailThe Degradation Of L-Tyrosine To Phenol And Benzoate In Pig Manure - The Role Of 4-Hydroxy-Benzoate
Antoine, P.; Taillieu, X.; Thonart, Philippe ULg

in Applied Biochemistry and Biotechnology (1997), 63-5

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See detailRadiographical Assessment of Interphalangeal Rotation in the Evaluation of Equine Digital Conformation
Caudron, I.; Grulke, Sigrid ULg; Gabriel, Annick ULg et al

in Acta Anatomica (1997), 160(2), 95-9

This study is a part of a work to design a radiographical method to objectively define the conformation of an equine digit and to assess the individual appropriate trimming of a horse. Various angles were ... [more ▼]

This study is a part of a work to design a radiographical method to objectively define the conformation of an equine digit and to assess the individual appropriate trimming of a horse. Various angles were measured directly from the phalangeal bones. The authors observed that the bone relief of the sesamoid ligament insertions on the proximal phalanx was an essential landmark to determine the phalangeal alignment. The same angles were measured from specific radiographs and made it possible to quantify the rotation imposed to the proximal phalanx. The authors also noticed that the phalangeal rotation had little influence on the radiographic image of articular asymmetry. [less ▲]

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See detailInventaire forestier régional et applications cartographiques.
Rondeux, Jacques ULg; George, B.; Lecomte, Hugues

in Silva Belgica (1997), 104(3),

Il est pratiquement possible de représenter, par voie cartographique, tous les résultats issus d'un inventaire réalisé par échantillonnage, que ce soit en termes de variables quantitatives réparties en ... [more ▼]

Il est pratiquement possible de représenter, par voie cartographique, tous les résultats issus d'un inventaire réalisé par échantillonnage, que ce soit en termes de variables quantitatives réparties en classes d'amplitudes fixées ou de variables qualitatives codées sur une échelle de valeurs prédéfinie. A la condition d'être de type systématique [RONDEUX, 1993], cet échantillonnage assure une représentation cartographique homogène d'autant plus fine, lisible et fiable que la maille définissant l'emplacement des unités de sondage est dense et que la variabilité de l'élément ou de la variable à illustrer est faible. La localisation géographique de l'information, en particulier forestière, permet de donner une autre dimension aux résultats et offre d'évidentes perspectives de valorisation de ceux-ci, en particulier lorsqu'il s'agit de problèmes relevant de la gestion de l'espace et de stratégies touchant son organisation à une large échelle. Ces propos sont illustrés par la réalisation de cartes relatives à une situation photographiée par le premier inventaire forestier wallon mis en oeuvre [RONDEUX, 1988] entre 1980 et 1984. Elles concernent, à titre d'exemple et compte tenu des contraintes exposées au paragraphe 2, la répartition entre propriétés publiques et privées, les types de peuplement (feuillus ou résineux) et la structure de ceux-ci, les volumes à l'hectare de la totalité du matériel ligneux vivant et les niveaux de productivité des peuplements d'épicéa commun. Nous envisagerons sur un plan général le type de relations unissant un inventaire par échantillonnage à une représentation cartographique thématique (paragraphe 2), nous présenterons ensuite les documents proposés après avoir précisé la définition aussi stricte que possible des variables entrant en ligne de compte (paragraphe 3) avant de terminer par une brève conclusion (paragraphe 4). [less ▲]

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See detailRoom temperature fluorescence spectra of protochlorophyllide and chlorophyllide forms in etiolated bean leaves
Boddi, B.; Franck, Fabrice ULg

in Journal of Photochemistry and Photobiology B : Biology (1997), 41(1-2), 73-82

Room-temperature fluorescence emission and excitation spectra of 3-day or 10-day old dark-grown bean (Phaseolus vulgaris L. cv Commodore) leaves were measured. The excitation light was defocused in such ... [more ▼]

Room-temperature fluorescence emission and excitation spectra of 3-day or 10-day old dark-grown bean (Phaseolus vulgaris L. cv Commodore) leaves were measured. The excitation light was defocused in such way that only a low rate of phototransformation took place and protochlorophyllide (Pchlide) forms could be detected. The spectra were resolved into gaussian components using a new method based on the comparison of the 4th derivative of the experimental spectrum and that of the calculated spectrum, i.e. the sum of the gaussians. In addition to Pchlide emission bands with maxima at 631, 644, 655 and 667 nm which correspond to those described earlier in 77 K spectra, two new and unusally narrow bands were found at 637 and 650 nm. Tn the Chlide region, emission bands were found at 676, 682, 686 and 695 nm. Changes in the relative amplitudes of the Pchlide and Chlide room temperature emission bands as a function of age, of excitation wavelength and in response to a short light flash were studied. A model is given in which dynamic interconversions of the pigment forms are suggested and the presence of the new forms is explained with the differences in the aggregational states of the pigments and with their interaction with NADPH or NADP(+). (C) 1997 Elsevier Science S.A. [less ▲]

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See detailL'artiste belge entre le mot et l'image (quelques éléments de comparaison entre Hergé, Michaux, Magritte)
Defays, Jean-Marc ULg

in Texte : Revue de Critique et de Théorie Littéraire (1997), 21-22

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See detailEtude clinique et anatomopathologique de l'infection expérimentale de lapins par une souche virale amyxomateuse isolée en Belgique
Marlier, Didier ULg; Coignoul, Freddy ULg; Boucraut-Baralon, Corine et al

in Annales de Médecine Vétérinaire (1997), 141

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See detailFatal Mural Endocarditis and Cutaneous Botryomycosis after Heart Transplantation
Defraigne, Jean-Olivier ULg; Demoulin, J. C.; Pierard, Gérald ULg et al

in American Journal of Dermatopathology (1997), 19(6), 602-5

Fatal mural endocarditis and botryomycosis occurred concurrently in a 62-year-old women 4 months after orthotopic heart transplantation. Subsequent to mild mitral regurgitation, infection developed on a ... [more ▼]

Fatal mural endocarditis and botryomycosis occurred concurrently in a 62-year-old women 4 months after orthotopic heart transplantation. Subsequent to mild mitral regurgitation, infection developed on a left atrial thrombus and was complicated by cerebral embolization. Simultaneously, skin nodules manifested on both forearms. Histologic examination revealed typical aspects of early evolving botryomycosis with massive infiltration of the dermis and hypodermis by necrotic granulomas framed by grains of Gram-positive coccoid forms. Bacteria were decorated by a nonspecific polyclonal antibody to Mycobacterium bovis. [less ▲]

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See detailEmergency Coronary Stenting with Wiktor Stent N Immediate and Late Results.
Bertrand, Olivier; Legrand, Victor ULg; Bilodeau et al

in The Journal of invasive cardiology (1997), 9(1), 2-9

In case of failed angioplasty, coronary stenting has gradually emerged as a non-surgical method to restore vessel patency and optimize coronary blood flow. There is still little clinical and angiographic ... [more ▼]

In case of failed angioplasty, coronary stenting has gradually emerged as a non-surgical method to restore vessel patency and optimize coronary blood flow. There is still little clinical and angiographic information on the use of radiopaque single loose interdigitating wire stents in angioplasty complicated by threatened or acute closure. Seventy-one patients received Wiktor stents after threatened vessel closure in 53 cases and acute closure in 18 cases. Stent delivery was successful in 98%. In-hospital death occurred in 1 case (1.4%). Stents occlusion were faced in 10 cases (14%), of which 6 presented early and 4 late after the procedure. Urgent bypass surgery was needed in 9 cases (12%) and 7 patients (10%) developed acute myocardial infarction. Serious bleeding complications occurred in 7 cases (10%) and vascular repair was performed in 4 patients (5%). During a follow-up of 20 +/- 10 months, 2 patients died, no myocardial infarction was observed and recurrence of angina was noted in 17 patients (24%). Angiographic analysis showed an acute gain in minimal lumen diameter of 1.71 +/- 0.22 mm and a late loss of 0.63 +/- 0.17 mm. Angiographic restenosis (diameter stenosis > 50%) presented in 20% of patients. Therefore, Wiktor stenting yields similar results than currently used stents in acute closure and strictly defined threatened vessel closure following angioplasty. [less ▲]

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See detailBovine herpesvirus type 4. In Lymphotropicherpesviruses: Epstein-Barr virus and Human herpesvirus 8
Thiry, Etienne ULg; Lomonte, P.; Vanderplasschen, Alain ULg et al

in International Agency for research on cancer (1997)

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See detailHepatocyte transplantation in anhepatic rats: effect on survival, blood chemistry and growth factor profile
Khalili, T.; Arkadopoulos, N.; Detry, Olivier ULg et al

in Surgical Forum (1997), 44

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See detailFrançois Stockmans
Delmer, A; Fairon-Demaret, M; Streel, Maurice ULg

in Annales Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Notices (1997), 97

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See detailParathyroid Hormone in the Treatment of Involutional Osteoporosis: Back to the Future
Reginster, Jean-Yves ULg; Taquet, A. N.; Fraikin, G. et al

in Osteoporosis International (1997), 7(Suppl 3), 163-8

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See detailImprovement Of Lipase Production From Yarrowia Lipolytica
Destain, Jacqueline ULg; Weber, D.; Thonart, Philippe ULg

in Biotechnology Letters (1997), 19(2),

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See detailThe glucocorticoid receptor inhibits the human prolactin gene expression by interference with Pit-1 activity
Nalda, Asunción M; Martial, Joseph ULg; Muller, Marc ULg

in Molecular & Cellular Endocrinology (1997), 134(2), 129-37

Glucocorticoids have been shown to inhibit the activity of the human prolactin (hPRL) promoter. Using transient expression experiments in rat pituitary cells, we located the sequence conferring ... [more ▼]

Glucocorticoids have been shown to inhibit the activity of the human prolactin (hPRL) promoter. Using transient expression experiments in rat pituitary cells, we located the sequence conferring glucocorticoid inhibition to a region which contains Pit-1 binding sites, responsible for pituitary-specific expression, but does not seem to contain a glucocorticoid receptor (GR) binding site. Co-transfection experiments in non-pituitary cell lines, using expression vectors for Pit-1 and different mutants of the human GR show that inhibition of the hPRL gene is seen only in the presence of Pit-1 and GR, and that the DNA binding function of the receptor is not required. Immunoprecipitation studies show that either anti-GR or anti-Pit-1 antibodies are able to co-precipitate GR and Pit-1, suggesting an interaction between these factors. We conclude that the activated GR functionally interferes with the pituitary specific factor Pit-1, thereby leading to the observed transcriptional repression. [less ▲]

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See detailRecherches karstologiques au Sud Cameroun
Willems, Luc ULg

in Regards (1997), 28

Several karsts have been studied in South Cameroon, booth in gneiss and granite lithologies.

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See detailPratique et importance des principales activités de loisirs chez des jeunes de 12 et 15 ans dans cinq pays européens
Cloes, Marc ULg; Ledent, Maryse; Didier, Pascale et al

in Sport (1997), 159/160

On admet généralement que les loisirs sont devenus une expression du style de vie dans les pays industrialisés. Dans ce contexte, la place qu'ils occupent dans le secteur social et dans le monde ... [more ▼]

On admet généralement que les loisirs sont devenus une expression du style de vie dans les pays industrialisés. Dans ce contexte, la place qu'ils occupent dans le secteur social et dans le monde économique semble croître régulièrement. Les comparaisons interculturelles des activités de loisirs s'avèrent très difficiles en raison des différences enregistrées dans la conception des instruments utilisés dans les enquêtes et dans les intérêts des équipes de recherche. ... [less ▲]

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See detailLes avatars de la conscience
Richelle, Marc ULg

in Bulletin de la Classe des Lettres et des Sciences Morales et Politiques (1997), 6e série, tome VIII(1-6), 13-47

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See detailAutour de Benjamin et Arendt
Delruelle, Edouard ULg

in Revue belge de Cinéma (1997), 41

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See detailTrajectoire déviante à la lisière entre adolescence et âge adulte
Gavray, Claire ULg

in Déviance et Société (1997), 21(3), 273-288

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See detailNationalism, Ethnicity and Cultural Identity in Europe - Keebet von Benda-Beckman & Maykel Verkuyten
Martiniello, Marco ULg

in Ethnic and Racial Studies (1997), 20(4), 854-855

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See detail125I-Tyr0-hCRH labelling characteristics of corticotropin-releasing hormone receptors: differences between normal and adenomatous corticotrophs.
Abs, R.; Smets, G.; Vauquelin, G. et al

in Neurochemistry International (1997), 30(3), 291-297

The presence of corticotropin-releasing hormone (CRH) receptors has been previously demonstrated in corticotrophs from normal pituitaries using a method combining immunocytochemistry and liquid emulsion ... [more ▼]

The presence of corticotropin-releasing hormone (CRH) receptors has been previously demonstrated in corticotrophs from normal pituitaries using a method combining immunocytochemistry and liquid emulsion autoradiography. The aim of this study was to compare the characteristics of the 125I-Tyr0-hCRH binding in corticotrophs from normal pituitaries (three obtained at autopsy and one obtained at surgery) with corticotrophs from pituitary adenomas (six corticotroph adenomas responsible for Cushing's disease and two silent corticotroph adenomas secreting a biologically inactive ACTH molecule). In normal corticotrophs, the larger part of the 125I-Tyr0-hCRH binding was localised in patchy conglomerates at the centre of the cell and, to a much lesser degree, in a diffuse pattern at the cell periphery. In adenomatous corticotrophs, CRH receptor expression is disturbed both quantitatively and qualitatively. Except for a minority of cells in one adenoma, all adenomatous corticotrophs showed only peripherally bound 125I-Tyr0-hCRH and no centrally localised binding. Furthermore, adenomatous corticotrophs revealed a statistically significant lower signal intensity when compared to normal corticotrophs and a strongly negative correlation was found between the labelling area in adenomatous corticotrophs and both the basal and CRH-stimulated plasma ACTH levels. These findings suggest defective processing of CRH receptors and could be relevant to the sustained ACTH secretion by adenomatous corticotrophs in Cushing's disease and, more generally, provide an explanation to its pathology. The silent corticotrophs secreting a biologically inactive ACTH molecule were characterised by a very faint signal intensity, although present on almost every cell. [less ▲]

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See detailEffects of level of intake and of available volatile fatty acids on the absorptive capacity of sheep rumen
Doreau, Michel; Ferchal, Edwin; Beckers, Yves ULg

in Small Ruminant Research (1997), 25

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See detailSporopodiopsis, a new genus of lichens (Ectolechiaceae) from S-E Asia
Sérusiaux, Emmanuël ULg

in Abstracta Botanica (1997), 21

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See detailIntratumoral heterogeneity for hsp90 mRNA levels in a breast cancer cell line
Luparello, C.; Noël, Agnès ULg; Pucci-Minafra, I.

in DNA & Cell Biology (1997), 16

BC-3A and BC-61 are two breast cancer cell lines that have been cloned from parental 8701-BC cells and exhibit different biosynthetic, proliferative, and invasive properties in vitro. In the attempt to ... [more ▼]

BC-3A and BC-61 are two breast cancer cell lines that have been cloned from parental 8701-BC cells and exhibit different biosynthetic, proliferative, and invasive properties in vitro. In the attempt to search whether alterations in the profiles of gene expression could be detected, we have submitted both cytotypes to identification of differentially expressed cDNAs. In addition, steroid hormone receptor mRNA arrays and in vivo tumorigenesis of the two lines have been checked. The technique used allowed identification of changes in the expression of the 90-kD heat shock protein-beta (hsp90beta) which is prominently down-regulated in BC-61 cells. Because we have also found that these cells, which lack estrogen receptor mRNA synthesis, display a more invasive behavior in vitro and increased tumorigenesis in vivo, we propose that evaluation of hsp903 transcript levels may be taken into consideration for screening as a novel molecular marker of breast cancer progression. [less ▲]

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See detailUltrasonographic examination of the proximal scutum in the horse.
Denoix, J. M.; Busoni, Valeria ULg; Olalla, M. J.

in Equine Veterinary Journal (1997), 29(2), 136-41

Normal and abnormal ultrasonographic images are presented of the proximal scutum (proximal sesamoid bones and palmar ligament) in the horse. Comparison between anatomical sections, MRI (magnetic resonance ... [more ▼]

Normal and abnormal ultrasonographic images are presented of the proximal scutum (proximal sesamoid bones and palmar ligament) in the horse. Comparison between anatomical sections, MRI (magnetic resonance imaging) and ultrasound scans enabled the authors to establish the normal ultrasonographic anatomy of the palmar fetlock. Nine cases of proximal scutum injuries were identified ultrasonographically, of which 4 are illustrated. On normal limbs, the facies flexoria of the proximal sesamoid bones appeared as a thin and regular hyperechoic line and the palmar ligament was regularly echogenic. Lesions of the proximal scutum, that could be documented ultrasonographically, included rupture of the palmar ligament, avulsion fractures of the proximal sesamoid bones and palmar ligament desmopathy. Thinning or degeneration of the palmar ligament, concurrent with osteolysis of the proximal sesamoid bones, were indicative of palmar ligament enthesopathy. Ultrasonographic examination provided essential information for an accurate diagnosis of proximal scutum damage. [less ▲]

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See detailMechanisms of cancer-related anemia and rationale for erythropoietin treatment
Beguin, Yves ULg

in Cancer Biotherapy (1997), 1

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See detailPeptides in membranes: tipping the balance of membrane stability.
Brasseur, Robert ULg; Pillot, T.; Lins, Laurence ULg et al

in Trends in biochemical sciences (1997), 22(5), 167-71

This review describes a class of peptides that associate with lipids in membranes and are commonly known as 'oblique-orientated peptides'. Owing to an asymmetric distribution of hydrophobic residues along ... [more ▼]

This review describes a class of peptides that associate with lipids in membranes and are commonly known as 'oblique-orientated peptides'. Owing to an asymmetric distribution of hydrophobic residues along the axis of the alpha-helix, such peptides can destabilize membranes or lipid cores, thereby facilitating such cellular processes as vesicular fusion or protein transport across subcellular compartments, as well as remodelling of lipid cores. [less ▲]

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See detailCompte rendu du Cahier de Linguistique française, n°14 : Lexique et pragmatique
Defays, Jean-Marc ULg

in Français Moderne (Le) (1997), (2), 239-244

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See detailEvaluation d'un programme intensif de revalidation pour travailleurs lombalgiques
Mairiaux, Philippe ULg; Oblin, Marc

in Archives des Maladies Professionnelles et de Médecine du Travail (1997), 58(5), 432439

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See detailNumerical simulation of a quantum particle in a box
Hermann, Raphaël ULg

in Journal of Physics : A Mathematical & General (1997), 30(11), 3967-3975

It is shown how one can get numerical prediction of quantum mechanical particle behaviour without using the Schrodinger equation. The main steps of this development are the non-differentiability ... [more ▼]

It is shown how one can get numerical prediction of quantum mechanical particle behaviour without using the Schrodinger equation. The main steps of this development are the non-differentiability hypothesis, the equations of motion entailed by this hypothesis, and the numerical formulation of a simple one-dimensional problem: the particle in a box. [less ▲]

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See detailL'hypoglycemie du patient diabetique. Recommendations of ALFEDIAM (French Language Association for the Study of Diabetes and Metabolic Diseases.
Grimaldi, A.; Slama, G.; Tubiana-Rufi, N. et al

in Diabètes & Métabolism (1997), 23(1), 100-8

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See detailUnexpected Influence of a C-Terminal-Fused His-Tag on the Processing of an Enzyme and on the Kinetic and Folding Parameters
Ledent, Philippe; Duez, Colette ULg; Vanhove, Marc et al

in FEBS Letters (1997), 413(2), 194-196

The addition of a poly-His C-terminal extension, designed to facilitate the purification of the protein, to the beta-lactamase of a thermophilic Bacillus licheniformis strain modified the site of action ... [more ▼]

The addition of a poly-His C-terminal extension, designed to facilitate the purification of the protein, to the beta-lactamase of a thermophilic Bacillus licheniformis strain modified the site of action of the signal peptidase. This resulted in the secretion of a protein with a different N-terminus, showing that this type of protein engineering might not always be as 'neutral' as generally assumed. (C) 1997 Federation of European Biochemical Societies. [less ▲]

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See detailLa nature de l'acte juridique attesté par l'O. Mich. III 1098
Straus, Jean ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1997), LXXII(143), 128-129

O. Mich. III 1098 attests the delivery of a slave as a surety of a loan.

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See detailLes modes de transmission du virus de l'hépatite C
Delwaide, Jean ULg; Gerard, Christiane ULg; Sondag, Danièle ULg et al

in Revue Médicale de Liège (1997), 52(6), 388-391

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See detailIn vitro modulation of keratinocyte attachment to dentin by minocycline
Van Heusden, Alain ULg; Rompen, Eric ULg; Lapière, Charles

in Journal of Dental Research (1997), 76

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See detailThe 118-135 Peptide Lot The Human Prion Protein Forms Amyloid Fibrils And Induces Liposome Fusion
Pillot, T.; Lins, Laurence ULg; Goethals, M. et al

in Journal of Molecular Biology (1997), 274(3), 381-93

The prion protein (PrPC) is a glycoprotein of unknown function normally found at the surface of neurons and of glial cells. It is involved in diseases such as bovine spongiform encephalopathy, and ... [more ▼]

The prion protein (PrPC) is a glycoprotein of unknown function normally found at the surface of neurons and of glial cells. It is involved in diseases such as bovine spongiform encephalopathy, and Creutzfeldt-Jakob disease in the human, where PrPC is converted into an altered form (termed PrPSc). PrPSc is highly resistant towards proteolytic degradation and accumulates in the central nervous system of affected individuals. By analogy with the pathological events occuring during the development of Alzheimer's disease, controverses still exist regarding the relationship between amyloidogenesis, prion aggregation and neuronal loss. To unravel the mechanism of PrP neurotoxicity and understand the interaction of PrP with cellular membranes, a series of natural and variant peptides spanning residues 118 to 135 of PrP was synthesized. The potential of these peptides to induce fusion of unilamellar lipid vesicles was investigated. According to computer modeling calculations, the 120 to 133 domain of PrP is predicted to be a tilted lipid-associating peptide, and to insert in a oblique way into a lipid bilayer through its N-terminal end. In addition to amyloidogenic properties exhibited in vitro by these peptides, peptide-induced vesicle fusion was demonstrated by several techniques, including lipid- and core-mixing assays. Elongation of the 120 to 133 peptide towards the N- and C-terminal ends of the PrP sequence showed that the 118 to 135 PrP peptide has maximal fusogenic properties, while the variant peptides had no effect. Due to their high hydrophobicity, all peptides tested were able to interact with liposomes to induce leakage of encapsulated calcein. We demonstrate also that the propensity of the peptides to fold as an alpha-helix increases their fusogenic activity, thus accounting for the maximal fusogenic activity of the most stable helix at residues 118 to 135. These data suggest that, by analogy with the C-terminal domain of the beta-amyloid peptide, the fusogenic properties exhibited by the prion peptides might contribute to the neurotoxicity of these peptides by destabilizing cellular membranes. [less ▲]

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See detailAspects of the Upper Palaeolithic in Central Europe
Otte, Marcel ULg; Noiret, Pierre ULg; López Bayón, Ignacio

in Préhistoire Européenne (1997), 11

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See detailMotivation des jeunes à la pratique des activités physiques et sportives
Ledent, Maryse; Cloes, Marc ULg; Onofre, C. Jordan et al

in Sport (1997), 159/160

Nombreux sont ceux qui attribuent une importance capitale aux motivations à la participation des jeunes au sport. En effet, les modalités de pratique et la qualité des expériences vécues dans le domaine ... [more ▼]

Nombreux sont ceux qui attribuent une importance capitale aux motivations à la participation des jeunes au sport. En effet, les modalités de pratique et la qualité des expériences vécues dans le domaine des activités physiques et sportives exerceraient de profonds effets dans la perspective d'un style de vie actif et sain à l'âge adulte. Cette croyance, bien établie chez les éducateurs physiques et les partisans du sport, doit néanmoins être prise avec beaucoup de prudence lorsque l'on considère les résultats des études longitudinales. ... [less ▲]

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See detailSur la pratique de la localisation implicite dans le Dictionnaire de l'Ouest-wallon d'Arille Carlier
Boutier, Marie-Guy ULg

in Travaux de linguistique et de philologie (1997), 35-36

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See detailApprentissage implicite et temps de réaction sériel: Une perspective développementale
Meulemans, Thierry ULg; Van der Linden, Martial ULg; Perruchet, Pierre

in Neuropsychiatrie de l'Enfance et de l'Adolescence (1997), 45(7-8), 384-386

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See detailRadiative Lifetimes for the 4p Excited States of Phosphorus and the Oscillator Strengths of Solar Lines
Berzinsh, U.; Svanberg, S.; Biémont, Emile ULg

in Astronomy and Astrophysics (1997), 326

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See detailThe Civility of Relationships: Charles Tomlinson and the Conversion of American Modernism
Delville, Michel ULg

in Symbiosis: A Journal of Anglo-American Literary Relations (1997)

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See detailParticipation des jeunes Européens aux activités physiques et sportives
Ledent, Maryse; Cloes, Marc ULg; Telama, Risto et al

in Sport (1997), 159/160

Le rôle primordial que jouent les activités physiques et sportives en matière de prévention de plusieurs maladies parfois fatales survenant à l'âge adulte constitue un argument essentiel en faveur d'une ... [more ▼]

Le rôle primordial que jouent les activités physiques et sportives en matière de prévention de plusieurs maladies parfois fatales survenant à l'âge adulte constitue un argument essentiel en faveur d'une pratique régulière de l'effort physique. Ses effets sur la santé, ou plus précisément sur les facteurs de risque chez les adultes, ont suscité l'éveil d'un nombre croissant de chercheurs. ... [less ▲]

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See detailIntoxications par le Temik® chez les animaux domestiques et sauvages : un problème alarmant en Wallonie
Delaunois, Annie; Lessire, Françoise ULg; Ansay, M. et al

in Annales de Médecine Vétérinaire (1997), 141

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See detailAnti-PMSG in sheep subjected annualy to oestrus synchronisation
Bodin, L.; Drion, Pierre ULg; Remy, Benoit et al

in Reproduction Nutrition Development (1997), 37

Estimation of the long-term consequences on reproduction performance of the oestrus synchronisation treatments that are annually applied to ewes was carried out on nine officially controlled dairy flocks ... [more ▼]

Estimation of the long-term consequences on reproduction performance of the oestrus synchronisation treatments that are annually applied to ewes was carried out on nine officially controlled dairy flocks in the Roquefort region of France. A hormonal treatment combining the insertion of a vaginal fluoro-gestone acetate (FGA) sponge for 14 days and the injection of about 500 IU of pregnant mare serum gonadotropin (PMSG) at withdrawal was applied to the ewes in seven of the nine flocks. The ewes in the two other flocks were used as controls. Blood samples were taken from each female just before the treatment (to test for the presence of residual antibodies) and 20 days after the PMSG injection. Anti-PMSG antibody binding rates were calculated for each blood sample. The residual binding rate increased with age and induce negative effects on the following years reproduction performances, ie, they increased the probability that the ewes would not become pregnant. [less ▲]

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See detailEssai comparatif de deux antalgiques, la floctafénine et le paracétamol, au cours de l’arthrose des membres inférieurs
Lequesne, M; Fannius, J; Reginster, Jean-Yves ULg et al

in Revue du Rhumatisme (1997), 64(5), 349-355

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See detailLe rôle de l'expert
Boxho, Philippe ULg

in Société d'étude du dommage corporel (1997)

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See detailMutations in the immunosuppressive peptide of bovine leukema virus affect fusion and infectivity in vivo
GATOT, Jean-Stéphane ULg; Kettmann, Richard ULg; Callebaut-Mornon, Isabelle et al

in Virus Research (1997), 47(2-Special Issue), 103

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See detailReflections on risk and resilience in adolescence
Born, Michel ULg; Jackson, Sandy; Jacob, Marie-Noël

in Journal of adolescence (1997), 20

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See detailMonotonous stability for neutral fixed points
Bair, Jacques ULg; Haesbroeck, Gentiane ULg

in Bulletin of the Belgian Mathematical Society Simon Stevin (1997), 4(5), 639-646

We give subtle, simple and precise results about the convergence or the divergence of the sequence (x(n)), where x(j) = f(x(j-1)) for every integer j, when the initial element x(0) is in the neighbourhood ... [more ▼]

We give subtle, simple and precise results about the convergence or the divergence of the sequence (x(n)), where x(j) = f(x(j-1)) for every integer j, when the initial element x(0) is in the neighbourhood of a neutral fixed point, i.e. a point x* such that f(x*) = x* with \f'(x*)\ = 1 (where f is a C-infinity function defined on a subset of R). [less ▲]

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See detailBeam-laser measurements and relativistic Hartree-Fock calculations of the lifetimes of the 4d95p levels in Ag II
Biémont, Emile ULg; Pinnington, E. H.; Kernahan, J. A. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1997), 30

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See detailEffect of activators and inhibitors of K+-channels on insulin secretion in the amphibian pancreas
Francini, F.; Pirotte, Bernard ULg; Gagliardino, J. J.

in Archives of Physiology & Biochemistry (1997), 105

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See detailMéthodes chromatographiques de dosage dans les milieux biologiques : stratégie de validation - Rapport d'une commission SFSTP
Chapuzet, E.; Mercier, N.; Bervoas-Martin, S. et al

in STP Pharma Pratiques (1997), 7(3), 169-194

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See detailEntre Babil et Babel
Durand, Pascal ULg

in Liège Université (1997), (Automne), 15

Compte rendu de J.-A. Rondal et J.-P. Thibaut, Psychologie de l'enfant et de l'adolescent, Bruxelles, Labor, 1997

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