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See detailRetour sur le délit collectif
Kéfer, Fabienne ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2017), (16), 738-739

La nature réglementaire des infractions de non-paiement de rémunération ne les empêche pas de former un délit collectif

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See detailStudy of the evolution of the osteoarthritis pathology and the mechanical properties of cartilage in a spontaneous osteoarthritis model in the Dunkin-Hartley guinea pigs.
Legrand, Catherine ULg; Centonze, Prescilia ULg; Comblain, Fanny ULg et al

in Osteoarthritis and Cartilage (2017, April), 25

In animal models, the severity of cartilage damage is assessed by histological scores evaluating the structure, the proteoglycan con- tent, the integrity of the tidemark, the cellularity, and osteophytes ... [more ▼]

In animal models, the severity of cartilage damage is assessed by histological scores evaluating the structure, the proteoglycan con- tent, the integrity of the tidemark, the cellularity, and osteophytes. In parallel to these histological analyzes, we studied the mechanical properties of cartilage at different stages of disease progression in the Dunkin-Hartley guinea pigs. We also correlated the severity of histo- logical lesions with the mechanical properties of cartilage. [less ▲]

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See detailKranzhugeln et seconde révolution urbaine en Haute Mésopotamie au IIIe millénaire av. J.-C.
Mas, Juliette ULg

Scientific conference (2017, April)

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See detailAn innovative non-animal chitosan hydrogel is able to restore the rheology of osteoarthritis synovial fluid ex vivo
Henrotin, Yves ULg; Rocasalbas, Guillem; Chausson, Mickaël et al

in Osteoarthritis and Cartilage (2017, April)

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See detailVitamin D supplementation in the prevention and management of major chronic diseases not related to mineral homeostasis in adults: research for evidence and a scientific statement from the European society for clinical and economic aspects of osteoporosis and osteoarthritis (ESCEO)
Cianferotti, Luisella; Bertoldo, Francesco; Bischoff-Ferrari, Heike et al

in Endocrine (2017), 56(2), 245-61

Introduction Optimal vitamin D status promotes skeletal health and is recommended with specific treatment in individuals at high risk for fragility fractures. A growing body of literature has provided ... [more ▼]

Introduction Optimal vitamin D status promotes skeletal health and is recommended with specific treatment in individuals at high risk for fragility fractures. A growing body of literature has provided indirect and some direct evidence for possible extraskeletal vitamin D-related effects. Purpose and Methods Members of the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis have reviewed the main evidence for possible proven benefits of vitamin D supplementation in adults at risk of or with overt chronic extra-skeletal diseases, providing recommendations and guidelines for future studies in this field. Results and conclusions Robust mechanistic evidence is available from in vitro studies and in vivo animal studies, usually employing cholecalciferol, calcidiol or calcitriol in pharmacologic rather than physiologic doses. Although many cross-sectional and prospective association studies in humans have shown that low 25-hydroxyvitamin D levels (i.e., <50 nmol/L) are consistently associated with chronic diseases, further strengthened by a dose-response relationship, several meta-analyses of clinical trials have shown contradictory results. Overall, large randomized controlled trials with sufficient doses of vitamin D are missing, and available small to moderate-size trials often included people with baseline levels of serum 25-hydroxyvitamin D levels >50 nmol/L, did not simultaneously assess multiple outcomes, and did not report overall safety (e.g., falls). Thus, no recommendations can be made to date for the use of vitamin D supplementation in general, parental compounds, or non-hypercalcemic vitamin D analogs in the prevention and treatment of extra-skeletal chronic diseases. Moreover, attainment of serum 25-hydroxyvitamin D levels well above the threshold desired for bone health cannot be recommended based on current evidence, since safety has yet to be confirmed. Finally, the promising findings from mechanistic studies, large cohort studies, and small clinical trials obtained for autoimmune diseases (including type 1 diabetes, multiple sclerosis, and systemic lupus erythematosus), cardiovascular disorders, and overall reduction in mortality require further confirmation. [less ▲]

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See detailGlobaLex / Update : Research Guide to Belgian Law
Malliet, Christoph; Desseilles, François ULg

Learning material (2017)

1. The Belgian Legal System in a Nutshell 2. Developments in Belgian Legal Documentation 3. Legal Documentation

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See detailThe ‘male escape hypothesis’: sex-biased metamorphosis in response to climatic drivers in a facultatively paedomorphic amphibian
Mathiron, Anthony; Lena, Jean-Paul; Baouch, Sarah et al

in Proceedings of the Royal Society B : Biological Sciences (2017), 284(1853), 20170176

Paedomorphosis is a major evolutionary process that bypasses metamorphosis and allows reproduction in larvae. In newts and salamanders, it can be facultative with paedomorphs retaining gills and ... [more ▼]

Paedomorphosis is a major evolutionary process that bypasses metamorphosis and allows reproduction in larvae. In newts and salamanders, it can be facultative with paedomorphs retaining gills and metamorphs dispersing. The evolution of these developmental processes is thought to have been driven by the costs and benefits of inhabiting aquatic versus terrestrial habitats. In this context, we aimed at testing the hypothesis that climatic drivers affect phenotypic transition and the difference across sexes because sex-ratio is biased in natural populations. Through a replicated laboratory experiment, we showed that paedomorphic palmate newts (Lissotriton helveticus) metamorphosed at a higher frequency when water availability decreased and metamorphosed earlier when temperature increased in these conditions. All responses were sex-biased, and males were more prone to change phenotype than females. Our work shows how climatic variables can affect facultative paedomorphosis and support theoretical models predicting life on land instead of in water. Moreover, because males metamorphose and leave water more often and earlier than females, these results, for the first time, give an experimental explanation for the rarity of male paedomorphosis (the ‘male escape hypothesis’) and suggest the importance of sex in the evolution of paedomorphosis versus metamorphosis. [less ▲]

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See detailRésultats des enquêtes "Attrait des Sciences" (années académiques 2015–2016 et 2016–2017)
Aerts, Stéphanie ULg; Ernst, Marie ULg

Report (2017)

Lors des rentrées académiques 2015-2016 et 2016-2017, une enquête a été envoyée aux étudiants primants inscrits en Faculté des Sciences. Cette enquête interroge les étudiants sur leur parcours secondaire ... [more ▼]

Lors des rentrées académiques 2015-2016 et 2016-2017, une enquête a été envoyée aux étudiants primants inscrits en Faculté des Sciences. Cette enquête interroge les étudiants sur leur parcours secondaire, leur choix d'étude, leur avenir professionnel et leurs aptitudes. Ce rapport consiste en une analyse descriptive et exploratoire des résultats des deux enquêtes. [less ▲]

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See detailThe Case of the Decaying Cadaver
Stefanuto, Pierre-Hugues ULg; Focant, Jean-François ULg

in The Analytical Scientist (2017), 51

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See detailEtude comparative des profils de dissolution in vitro de quinine sulfate générique et princeps en utilisant la Chromatographie Liquide Haute Performance
Mbinze Kindenge, Jérémie ULg; Diallo, Tediane; Yemoa, Loconon ULg et al

in Médecine d'Afrique Noire (2017), 64

Introduction : La quinine est une molécule préconisée pour le traitement du paludisme dans les régions où les souches de P. falciparum sont polyrésistantes. Face à l’importante utilisation de ses ... [more ▼]

Introduction : La quinine est une molécule préconisée pour le traitement du paludisme dans les régions où les souches de P. falciparum sont polyrésistantes. Face à l’importante utilisation de ses médicaments génériques d’une part, et au fléau des médicaments de qualité inférieure d’autre part, il devient plus que nécessaire d’appuyer les données des tests physico-chimiques par celles de dissolution in vitro dont l’évaluation et la comparaison des cinétiques permettra de prédire le comportement in vivo du principe actif et par conséquent l’efficacité du médicament générique. L’objectif de la présente étude est de réaliser une étude comparative de la cinétique de dissolution d’un princeps et d’un générique à base de quinine comprimé 300 mg commercialisés à Kinshasa. Matériels et méthodes : L’étude a été réalisée en utilisant trois milieux de pH différents (1,2 - 4,5 - 6,8) tels que recommandés par l’Agence Européenne de Médicament et en se servant d’un appareil de dissolution, tandis que l’équipement de chromatographie liquide à haute performance couplée à un détecteur à barrette de diodes a été utilisé pour la quantification. La méthode statistique fit factor a été appliquée pour comparer les résultats de dosage de la quinine dans les trois milieux tout en ayant évalué le biais à différents temps de dissolution. Résultats : Les différents échantillons de médicaments générique et princeps ont été conformes quant à l’identification et au dosage de la quinine, par contre leurs cinétiques de dissolution étaient non similaires. Discussion : Ceci pourrait avoir une influence sur l’efficacité du produit générique et la sécurité des consommateurs, dénotant l’importance d’examiner les profils de dissolution des génériques avant toute autorisation de mise sur le marché plus particulièrement dans les pays en voie de développement. [less ▲]

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See detailLa musica di fra Giovanni da Verona - presentazione monografia Classiques Garnier
Bugini, Mariaelena ULg

Scientific conference (2017, March 30)

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See detailGovernance of plant health and management of crop diversity - the case of common bean health management among members of the association Croqueurs de Carottes
Klaedtke, Stephanie ULg

Doctoral thesis (2017)

All over the globe, networks of seed growers are cultivating crop diversity in fields and gardens. Their contribution to the maintenance of this diversity has been studied, but research has widely left ... [more ▼]

All over the globe, networks of seed growers are cultivating crop diversity in fields and gardens. Their contribution to the maintenance of this diversity has been studied, but research has widely left aside their management of plant health. The governance of bean health practiced by an association of artisanal seed companies, Croqueurs de Carottes, is approached as a case study in the objective of specifying how management of crop diversity and governance of plant health are articulated. Their concern for the governance of bean health is elucidated from an agroecological perspective, taking an interdisciplinary and transformative approach. Actor-network theory constitutes the backbone of the thesis, situated between agronomy and sociology and drawing upon a threefold research device: on-farm experiments, semi-directive interviews and participant observation. The Croqueurs' approach to bean health is described as in situ approach, in which plant populations are considered healthy if they are able to live with potential plant pathogens and adapt to their growing environments. Relying on ecological interactions, competences of plant health management are distributed throughout the production system. Both for plant health and crop diversity management, a seed lot is determined by a complex system of interactions. A clear boundary distinguishing plant populations from their growing environment cannot be drawn. This implies (i) that plant health must be judged upon in situ in the plants' growing environment and (ii) that the governance of plant health must be considered at the collective scale. [less ▲]

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See detailInfectious diseases diagnosis and vaccination in pet rabbits : an everyday challenge
Marlier, Didier ULg

in Marlier, Didier (Ed.) Proceedings of the Third International Conference on Avian heRpetological and Exotic mammal medicine (2017, March 25)

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See detailDepression is a heterogeneous condition: A cluster-analysis approach
Wagener, Aurélie ULg; Baeyens, Céline; Van der Linden, Martial ULg et al

Poster (2017, March 24)

The heterogeneity of depression (i.e., symptomatology profiles, treatment responsiveness) is more and more evidenced. From a clinical perspective, having a clearer overview of the symptoms’ heterogeneity ... [more ▼]

The heterogeneity of depression (i.e., symptomatology profiles, treatment responsiveness) is more and more evidenced. From a clinical perspective, having a clearer overview of the symptoms’ heterogeneity of depression will help (1) to deeper understand its underlined psychological processes and (2) to tailor clinical treatments (i.e., psychological interventions and/or antidepressant medications). In order to so, an effort to determine subtypes of depression has been developed through a cluster-analysis approach. Andreasen et al. (1980) identified three clusters of depressed patients based on the Schedule for Affective Disorders and Schizophrenia; Schacht et al. (2014) evidenced five clusters based on the Hamilton Depression Rating Scale (i.e., lack of insight, sleep/sexual/somatic, typical MDD, gastrointestinal/weight loss, mild MDD); Hybels et al. (2012) found three clusters of depressive patients based on the Center for Epidemiologic Studies-Depression Scale in community seniors; and Guidi et al. (2011) found two clusters of depressives in medically ill patients based on the Structured Clinical Interview for DSM-IV (i.e., depressed somatizers, irritable/anxious depression). The current study aims at replicating and extending these previous findings in adults presenting depressive symptoms through a cluster-analysis approach. Unlike previous studies, the highlighting of the clusters will be based on the most frequently used assessment of depression, the Beck Depression Inventory-Second Edition (BDI-II). Further, the definition of the clusters will be based on the presence of the depressive symptoms rather than on their severity because symptoms’ severity on the BDI-II can be misrepresentative of the phenomenology of depressive symptoms’ clusters. A sample of 619 adults from community and mental healthcare centers has been recruited. Inclusion criteria were as follows: being a French-speaking adult aged between 18 and 60 years and presenting at least five symptoms on the BDI-II, irrespective of their severity. Data grouping was achieved through a combination of hierarchical (Ward’s method with squared Euclidian distance measurement) and nonhierarchical procedures (K-means cluster analysis), as recommended by recent theoretical trends. A six-cluster solution was evidenced: heavy sleepers (high levels of tiredness, loss of energy and increase of sleep), cognitive depressives (high levels of pessimism, past failures, guilty feelings, self-dislike and worthlessness), affective-somatic depressives (high levels of affective symptoms - loss of interest and pleasure - and somatic symptoms - increase of appetite and sleep, irritability), mild depressives (mild levels of all symptoms), sleepless depressives (high levels of decrease of sleep and tiredness), typical depressives (high levels of all symptoms). Results evidenced the heterogeneity of depressive symptoms, as six different clusters of depressive adults have been found. Two of the clusters identified in the current study are similar to two clusters identified by Schacht et al. (2014) (sleepless depressives are similar to the cluster “sleep/sexual/somatic” because their profile are highly characterized by symptoms related to insomnia and tiredness; mild depressives are similar to the cluster “mild MDD/symptoms” because their profile are characterized by low to average levels on all symptoms). The take-home message of this study is that depression is a heterogeneous condition. Consequently, it is necessary to consider this heterogeneity in order to tailor the psychological intervention. [less ▲]

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See detailInterest of multisite bacterial screening for the diagnosis of congenital listerisosis with negative blood culture: a case report
Snyers, Diane ULg; Thirion, Sophie ULg; Kalenga, Masendu ULg et al

Scientific conference (2017, March 23)

Listeria monocytogenes (LM) is known to cause severe invasive disease in pregnant women and in newborns. Fortunately, despite the wide natural distribution of this pathogen, clinically overt neonatal ... [more ▼]

Listeria monocytogenes (LM) is known to cause severe invasive disease in pregnant women and in newborns. Fortunately, despite the wide natural distribution of this pathogen, clinically overt neonatal infections occurs rarely. As a consequence, listeriosis is not always considered for early onset neonatal infection, especially when blood culture is negative. Indeed, identification of listeria in the blood stream by conventional bacteriological methods remains the reference method for diagnosing listeriosis. We report a case of congenital listeriosis with negative blood culture despite typical chorioamnionitis, where the pathogen was cultured in gastric aspirate.Although the disease is rare, congenital listeriosis still remain a possible challenging condition in neonatal practice as revealed by this case report. This also shows the importance of multisite bacterial culture beside conventional blood and CSF culture, in combination with histological examination of the placenta for the diagnosis of congenital listeriosis. [less ▲]

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See detailLa musica di fra Giovanni da Verona
Bugini, Mariaelena ULg

Scientific conference (2017, March 23)

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See detailKNN-MDR: a learning approach for improving interactions mapping performances in genome wide association studies
Abo Al Chamlat, Sinan ULg; Farnir, Frédéric ULg

in BMC Bioinformatics (2017), 18

Background Finding epistatic interactions in large association studies like genome-wide association studies (GWAS) with the nowadays-available large volume of genomic data is a challenging and largely ... [more ▼]

Background Finding epistatic interactions in large association studies like genome-wide association studies (GWAS) with the nowadays-available large volume of genomic data is a challenging and largely unsolved issue. Few previous studies could handle genome-wide data due to the intractable difficulties met in searching a combinatorial explosive search space and statistically evaluating epistatic interactions given a limited number of samples. Our work is a contribution to this field. We propose a novel approach combining K-Nearest Neighbors (KNN) and Multi Dimensional Reduction (MDR) methods for detecting gene-gene interactions as a possible alternative to existing algorithms, e especially in situations where the number of involved determinants is high. After describing the approach, a comparison of our method (KNN-MDR) to a set of the other most performing methods (i.e., MDR, BOOST, BHIT, MegaSNPHunter and AntEpiSeeker) is carried on to detect interactions using simulated data as well as real genome-wide data. Results Experimental results on both simulated data and real genome-wide data show that KNN-MDR has interesting properties in terms of accuracy and power, and that, in many cases, it significantly outperforms its recent competitors. Conclusions The presented methodology (KNN-MDR) is valuable in the context of loci and interactions mapping and can be seen as an interesting addition to the arsenal used in complex traits analyses. [less ▲]

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