References of "2009"
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See detailEn passant : qualités et vices de la possession
Boufflette, Sophie ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009), (27), 1251-1254

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See detailSex differences in the expression of sex steroid receptor mRNA in the quail brain.
Voigt, C.; Ball, G. F.; Balthazart, Jacques ULg

in Journal of Neuroendocrinology (2009)

Abstract In Japanese quail, males will readily exhibit the full sequence of male-typical sexual behaviors but females never show this response even after ovariectomy and treatment with male-typical ... [more ▼]

Abstract In Japanese quail, males will readily exhibit the full sequence of male-typical sexual behaviors but females never show this response even after ovariectomy and treatment with male-typical concentrations of exogenous testosterone. Testosterone aromatization plays a key-limiting role in the activation of this behavior but the higher aromatase activity in the brain of males compared to females is not sufficient to explain the behavioral sex difference. The cellular and molecular bases of this prominent sex difference in the functional consequences of testosterone have not been identified so far. We hypothesized that the differential expression of sex steroid receptors in specific brain areas could mediate this behavioral sex difference and therefore quantified by radioactive in situ hybridization histochemistry the expression of the mRNA coding for the androgen receptor (AR) and the estrogen receptors (ER) of the alpha and beta sub-types. All three receptors were expressed in an anatomically discrete manner in various nuclei of the hypothalamus and limbic system and, at usually lower densities, in a few other brain areas. In both sexes, the intensity of the hybridization signal for all steroid receptors was highest in the medial preoptic nucleus (POM), a major site of testosterone action related to the activation of male sexual behavior. Although no sex difference in the optical density of the AR hybridization signal could be found in POM, the area covered by AR mRNA was significantly larger in males than in females, indicating a higher overall degree of AR expression in this region in males. In contrast, females tended to have significantly higher levels of AR expression than males in the lateral septum. ERalpha was more densely expressed in females than males throughout the medial preoptic and hypothalamic areas (including the POM and the medio-basal hypothalamus [MBH)], an area implicated in the control of female receptivity) and in the mesencephalic nucleus intercollicularis. ERbeta was more densely expressed in the medio-basal hypothalamus of females but a difference in the reverse direction (males>females) was observed in the nucleus taeniae of the amygdala. These data suggest that a differential expression of steroid receptors in specific brain areas could mediate at least certain aspects of the sex differences in behavioral responses to testosterone but they do not appear to be sufficient to explain the complete lack of activation by testosterone of male-typical copulatory behavior in females. [less ▲]

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See detailBousculer les habitudes scolaires. Vers une gestion pédagogique des écoles secondaires
Guillaume, Jean-François ULg

Book published by Les Editions de l'Université de Liège (2009)

La gestion d'un établissement scolaire en Belgique francophone doit compter avec des attentes multiples et parfois contradictoires : les soucis éducatifs des parents désireux de trouver la bonne école ... [more ▼]

La gestion d'un établissement scolaire en Belgique francophone doit compter avec des attentes multiples et parfois contradictoires : les soucis éducatifs des parents désireux de trouver la bonne école ; des projets politiques motivés par les résultats des évaluations internationales et visant à favoriser la mixité sociale et à améliorer la qualité de l'enseignement ; des injonctions pédagogiques valorisant l'acquisition des compétences. Dans les réformes qui se sont succédées au cours des deux dernières décennies, l'établissement scolaire a gagné en autonomie et a été investi de nouvelles responsabilités. La gestion pédagogique des écoles secondaires est un défi majeur des prochaines années. Et pour le relever, il ne saurait être question de faire l'impasse sur une critique radicale des habitudes scolaires. [less ▲]

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See detailExplosive strength imbalances in professional basketball players.
Schiltz, Marc; Lehance, Cédric ULg; Maquet, Didier ULg et al

in Journal of Athletic Training (2009), 44(1), 39-47

CONTEXT: Despite the high rate of lower limb injuries in basketball players, studies of the dominant-limb effect in elite athletes often neglect injury history. OBJECTIVE: To determine lower limb ... [more ▼]

CONTEXT: Despite the high rate of lower limb injuries in basketball players, studies of the dominant-limb effect in elite athletes often neglect injury history. OBJECTIVE: To determine lower limb explosive-strength asymmetries in professional basketball players compared with junior basketball players and control participants. DESIGN: Cohort study. SETTING: Academic medical institution. PATIENTS OR OTHER PARTICIPANTS: 15 professional basketball players, 10 junior basketball players, and 20 healthy men. MAIN OUTCOME MEASURE(S): We performed an isokinetic examination to evaluate the knee extensor (Ext) and flexor (Fl) concentric peak torque at 60 degrees .s(-1) and 240 degrees .s(-1) and (Fl only) eccentric peak torque at 30 degrees .s(-1) and 120 degrees .s(-1). Functional evaluation included countermovement jump, countermovement jump with arms, 10-m sprint, single-leg drop jump, and single-leg, 10-second continuous jumping. Variables were compared among groups using analysis of variance or a generalized linear mixed model for bilateral variables. RESULTS: The 2 groups of basketball players demonstrated better isokinetic and functional performances than the control group did. No differences in functional or relative isokinetic variables were noted between professional and junior basketball players. Professional players with a history of knee injury failed to reach normal knee extensor strength at 60 degrees .s(-1). Knee Ext (60 degrees .s(-1)) and Fl (eccentric 120 degrees .s(-1)) torque values as well as 10-second continuous jumping scores were higher in those professional players without a history of knee injury than those with such a history. Compared with the group without a history of knee injury, the group with a history of knee injury maintained leg asymmetry ratios greater than 10% for almost all isokinetic variables and more than 15% for unilateral functional variables. CONCLUSIONS: The relative isokinetic and functional performances of professional basketball players were similar to those of junior players, with no dominant-side effect. A history of knee injury in the professional athlete, however, was reflected in bilateral isokinetic and functional asymmetries and should be considered in future studies of explosive strength. [less ▲]

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See detailChemical Composition and Antioxydant Activity of Laurus nobilis Floral Buds Essential Oil
Bouzouita, N.; El Omri, A.; Kachouri, F. et al

in Journal of Essential Oil Research (2009)

The essential oil of Laurus nobilis floral buds (FB) collected in Tunisia was obtained by hydrodistillation and analysed by GC-MS. Twenty three constituents were identified. The main components of this ... [more ▼]

The essential oil of Laurus nobilis floral buds (FB) collected in Tunisia was obtained by hydrodistillation and analysed by GC-MS. Twenty three constituents were identified. The main components of this oil were α-terpinyl acetate (28.43 %), methyl eugenol (19.57 %), eugenol (7.42 %) and elemicin (4.41 %). The antioxidant activity of the oil of Laurus nobilis FB was evaluated by two methods, β-carotene bleaching (BCB) test and 2.2-diphenyl-β-picrylhydrazyl (DPPH) assay using respectively butylated hydroxytoluene (BHT), trolox, gallic acid, caffeic acid and δ-tocopherol as standards. It was found that the Laurus nobilis FB oil have a significant antioxidant effect when tested by each method respectively. The antioxidant activity of this oil is more effective than the synthetic antioxidant (BHT) at 200 ppm and can be attributed to the active compounds eugenol, elemicin and methyl eugenol present in this essential oil. [less ▲]

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See detailAbsence of aromatase protein and mRNA expression in endometriosis.
Colette, S.; Lousse, J. C.; Defrère, S. et al

in Human Reproduction (2009), 24(9), 2133-41

BACKGROUND: Aromatase has been reported to be involved in estrogen biosynthesis and expressed in eutopic and ectopic endometrium of endometriosis patients. The objective of the present study was to ... [more ▼]

BACKGROUND: Aromatase has been reported to be involved in estrogen biosynthesis and expressed in eutopic and ectopic endometrium of endometriosis patients. The objective of the present study was to investigate its expression and localization in three distinct types of endometriosis. METHODS: Human peritoneal, ovarian and rectovaginal endometriotic lesions and matched eutopic endometrium were collected from patients during laparoscopy. Aromatase protein localization (immunohistochemistry, n = 63) and mRNA expression [quantitative polymerase chain reaction (Q-PCR), n = 64] were assessed. RESULTS: No aromatase protein was detected by immunohistochemistry in either the glandular or stromal compartment of endometriotic lesions or eutopic endometrium, while it was strong in placental syncytiotrophoblasts, granulosa and internal theca cells from pre-ovulatory follicles, and luteal cells from corpus luteum. By Q-PCR, low but discernible levels of aromatase expression were found in endometriomas, probably due to follicular expression. Transcripts for aromatase were barely detectable in only a few peritoneal and rectovaginal endometriotic lesions, and a few eutopic endometrium samples, probably due to contaminating surrounding tissues (adipose tissue, intact peritoneum). CONCLUSIONS: Unlike previous studies, we observed no aromatase protein in any of the endometriosis types, and barely detectable aromatase mRNA expression, suggesting that locally produced aromatase (within endometriotic lesions) may be less implicated in endometriosis development than previously postulated. Potential factors responsible for these discrepancies are discussed. [less ▲]

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See detailCentre de Ressources Autisme Liège
Philippe, Paule ULg; Jacques, Jessica ULg

Poster (2009)

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See detailCardiac metastasis from malignant melanoma.
Lempereur-Legros, Sophie ULg; Radermecker, Marc ULg; Soyeur, Daniel ULg et al

in Revue Médicale de Liège (2009), 64

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See detailContamination du marsouin commun (Phocoena phocoena) de la Mer du Nord par des perturbateurs endocriniens persistants
Didimo Imazaki, Pedro Henrique ULg

Master's dissertation (2009)

Endocrine disrupters are molecules able to interfere with the endocrine system and are largely spread in the environment. The evaluation of the estrogenic activity of some of these substances by reporter ... [more ▼]

Endocrine disrupters are molecules able to interfere with the endocrine system and are largely spread in the environment. The evaluation of the estrogenic activity of some of these substances by reporter gene assays was the first aim of this paper. The substances chosen are also persistent organic pollutants (POP), which are capable to bioaccumulate in several organisms. Then, the occurrence of these substances was evaluated in the blubber tissue of North Sea harbour porpoises (Phocoena phocoena). Harbour porpoises are good indicators of the environmental contamination and therefore of seafood by POP. These POP were quantified by GC-MS and also by reporter gene assays. For the achievement of these aims, different analytical methods were developed. The following raking is proposed for the studied substances, according to their estrogenic activity: o,p’-DDT > o,p’-DDD > β-HCH > p,p’-DDT > p,p’-DDD > p,p’-DDE > δ-HCH > PCB 138 > γ-HCH > α-HCH > PCB 153 > HCB > PCB 180. None of them presented anti-estrogenic activity. The analysed samples presented high levels of POP, sometimes associated with estrogenic activity, confirming the occurrence of endocrine disruptors in these animals. [less ▲]

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See detailOptimisation du traitement pharmacologique chez un patient avec un diabete de type 2 nouvellement diagnostique.
De Flines, Jenny ULg; Radermecker, Régis ULg; Jandrain, Bernard ULg et al

in Revue Médicale de Liège (2009), 64(2), 109-14

The diabetic patient, when type 2 diabetes is newly diagnosed, raises a therapeutic problem commonly observed in clinical practice, which is more complex than expected at first glance. The physician has ... [more ▼]

The diabetic patient, when type 2 diabetes is newly diagnosed, raises a therapeutic problem commonly observed in clinical practice, which is more complex than expected at first glance. The physician has to select the most appropriate antidiabetic oral agent as first choice, to consider the potential of using combined glucose-lowering therapies, to fix glycaemic target taking into account the individual benefit/risk ratio, and to offer the best protection against cardiovascular complications. The present clinical case illustrates such therapeutic problem describing a patient with a high cardiovascular risk profile who experienced a hypoglycaemic episode after the prescription of glibenclamide following the discovery of a moderate hyperglycaemia. [less ▲]

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See detailModernisme
Delrez, Marc ULg

Learning material (2009)

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See detailL'excès pondéral et l'obésité chez l'enfant, un défi pour la santé publique
Guillaume, Michèle ULg; Counet, Laurence ULg

in Enfant et nutrition. Guide à l'usage des professionnels. (2009)

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See detailLe Dévonien: des mousses à l'arbre.
Gerrienne, Philippe ULg

Conference (2009)

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See detailInstruction-level countermeasures against stack-based buffer overflow attacks
Gadaleta, Francesco ULg; Younan, Yves; Jacobs, Bart et al

Report (2009)

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See detailIdentifier les structures locales de décision
Vermeulen, Cédric ULg

in Triplet, Patrick (Ed.) Manuel de gestion des aires protégées d'afrique de L'ouest (2009)

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See detailA 35nm diameter vertical silicon nanowire short-gate tunnelFET
Vandooren, A.; Rooyackers, R.; Leonelli, D. et al

Conference (2009)

A top-down integration scheme for silicon vertical nanowire (NW) tunnel field-effect transistors (TFETs) with a 35nm nanowire dimension and using state-of-the-art metal gate and high-k gate dielectric is ... [more ▼]

A top-down integration scheme for silicon vertical nanowire (NW) tunnel field-effect transistors (TFETs) with a 35nm nanowire dimension and using state-of-the-art metal gate and high-k gate dielectric is demonstrated. Using the short-gate concept [1], the ambipolar behavior of the TFET is successfully suppressed. The measured TFET performance is not yet beyond that of the MOSFET, most likely due to the use of silicon that has a large bandgap and the use of ion implantation for the formation of the tunnel junction which results in a low junction abruptness. To boost the device performance, a low thermal budget processing could be used on etched nanowires in a substrate with epitaxial grown junction, in order to increase the abruptness of the tunnel junction. [less ▲]

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See detailFirst insights into the gut microflora associated with an echinoid from wood falls environments
Becker, Pierre; Samadi, Sarah; Zbinden, Magali et al

in Cahiers de Biologie Marine (2009), 50

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See detailLes dernières girafes d'Afrique de l'Ouest
Vermeulen, Cédric ULg

in Parcs & Réserves (2009), 64(2), 14-16

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See detailSynthèse 2009: forger l'avenir
Malaise, Michel ULg

in Revue Médicale de Liège (2009), 64(Spec No), 1

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See detailOceanic sources, sinks, and transport of atmospheric CO2
Gruber, Nicolas; Gloor, Manuel; Fletcher, Sara E Mikaloff et al

in Global Biogeochemical Cycles (2009), 23

We synthesize estimates of the contemporary net air-sea CO2 flux on the basis of an inversion of interior ocean carbon observations using a suite of 10 ocean general circulation models (Mikaloff Fletcher ... [more ▼]

We synthesize estimates of the contemporary net air-sea CO2 flux on the basis of an inversion of interior ocean carbon observations using a suite of 10 ocean general circulation models (Mikaloff Fletcher et al., 2006, 2007) and compare them to estimates based on a new climatology of the air-sea difference of the partial pressure of CO2 (pCO(2)) (Takahashi et al., 2008). These two independent flux estimates reveal a consistent description of the regional distribution of annual mean sources and sinks of atmospheric CO2 for the decade of the 1990s and the early 2000s with differences at the regional level of generally less than 0.1 Pg C a(-1). This distribution is characterized by outgassing in the tropics, uptake in midlatitudes, and comparatively small fluxes in the high latitudes. Both estimates point toward a small(similar to -0.3 Pg C a(-1)) contemporary CO2 sink in the Southern Ocean (south of 44 degrees S), a result of the near cancellation between a substantial outgassing of natural CO2 and a strong uptake of anthropogenic CO2. A notable exception in the generally good agreement between the two estimates exists within the Southern Ocean: the ocean inversion suggests a relatively uniform uptake, while the pCO(2)-based estimate suggests strong uptake in the region between 58 degrees S and 44 degrees S, and a source in the region south of 58 degrees S. Globally and for a nominal period between 1995 and 2000, the contemporary net air-sea flux of CO2 is estimated to be -1.7 +/- 0.4 Pg C a(-1) (inversion) and -1.4 +/- 0.7 Pg C a(-1) (pCO(2)-climatology), respectively, consisting of an outgassing flux of river-derived carbon of similar to+0.5 Pg C a(-1), and an uptake flux of anthropogenic carbon of -2.2 +/- 0.3 Pg C a(-1) (inversion) and -1.9 +/- 0.7 Pg C a(-1) (pCO(2)-climatology). The two flux estimates also imply a consistent description of the contemporary meridional transport of carbon with southward ocean transport throughout most of the Atlantic basin, and strong equatorward convergence in the Indo-Pacific basins. Both transport estimates suggest a small hemispheric asymmetry with a southward transport of between -0.2 and -0.3 Pg C a(-1) across the equator. While the convergence of these two independent estimates is encouraging and suggests that it is now possible to provide relatively tight constraints for the net air-sea CO2 fluxes at the regional basis, both studies are limited by their lack of consideration of long-term changes in the ocean carbon cycle, such as the recent possible stalling in the expected growth of the Southern Ocean carbon sink. [less ▲]

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