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See detailIgG fc receptors provide an alternative infection route for murine gamma-herpesvirus-68.
Rosa, Gustavo T; Gillet, Laurent ULg; Smith, Christopher M et al

in PLoS ONE (2007), 2(6), 560

BACKGROUND: Herpesviruses can be neutralized in vitro but remain infectious in immune hosts. One difference between these settings is the availability of immunoglobulin Fc receptors. The question ... [more ▼]

BACKGROUND: Herpesviruses can be neutralized in vitro but remain infectious in immune hosts. One difference between these settings is the availability of immunoglobulin Fc receptors. The question therefore arises whether a herpesvirus exposed to apparently neutralizing antibody can still infect Fc receptor(+) cells. PRINCIPAL FINDINGS: Immune sera blocked murine gamma-herpesvirus-68 (MHV-68) infection of fibroblasts, but failed to block and even enhanced its infection of macrophages and dendritic cells. Viral glycoprotein-specific monoclonal antibodies also enhanced infection. MHV-68 appeared to be predominantly latent in macrophages regardless of whether Fc receptors were engaged, but the infection was not abortive and new virus production soon overwhelmed infected cultures. Lytically infected macrophages down-regulated MHC class I-restricted antigen presentation, endocytosis and their response to LPS. CONCLUSIONS: IgG Fc receptors limit the neutralization of gamma-herpesviruses such as MHV-68. [less ▲]

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See detail13ième activité du CDS - Evaluation formative
Colaux, Catherine ULg

Report (2007)

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See detailL'histoire que nous faisons. Contre les théories de la manipulation
Jamin, Jérôme ULg; Jacquemain, Marc ULg

Book published by Espace de libertés (2007)

Dans un monde de plus en plus interdépendant, il nous arrive de nous sentir manipulés par les acteurs dominants que sont les institutions économiques internationales, les entreprises mondialisées, les ... [more ▼]

Dans un monde de plus en plus interdépendant, il nous arrive de nous sentir manipulés par les acteurs dominants que sont les institutions économiques internationales, les entreprises mondialisées, les grands médias ou les principaux responsables politiques. Pour autant, l’homme ordinaire d’aujourd’hui n’est-il vraiment qu’une marionnette comme le prétend toute une partie de la critique de gauche ? Ne sommes-nous pas davantage acteurs qu’on nous le prétend et n’avons-nous pas mieux à faire que de voir partout des manipulations et des « agendas cachés » ? C’est à cette réflexion que nous invitent les auteurs. [less ▲]

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See detailTraitement des pyodermites superficielles chez le chien
Cuvelier, Christine ULg

in Folia Veterinaria (2007), 2

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See detailNatural dualities for varieties generated by a set of subalgebras of a semi-primal algebra
Mathonet, Pierre ULg; Niederkorn, Philippe; Teheux, Bruno ULg

in Algebra and Discrete Mathematics (2007), (1), 67--85

The main contribution of this paper is the construction of a strong duality for the varieties generated by a set of subalgebras of a semi-primal algebra. We also obtain an axiomatization of the objects of ... [more ▼]

The main contribution of this paper is the construction of a strong duality for the varieties generated by a set of subalgebras of a semi-primal algebra. We also obtain an axiomatization of the objects of the dual category and develop some algebraic consequences (description of the dual of the finite structures and algebras, construction of finitely generated free algebras,. . . ). Eventually, we illustrate this work for the finitely generated varieties of MV-algebras. [less ▲]

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See detailNumerical simulation of semi-solid thixoforming
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in Int. Conf. on Computational Plasticity, COMPLAS IX (2007)

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See detailRetroperitoneal abscess from dropped appendicolith complicating laparoscopic appendectomy.
Lambo, A.; NCHIMI LONGANG, Alain ULg; Khamis, J. et al

in European journal of pediatric surgery : official journal of Austrian Association of Pediatric Surgery ... [et al] = Zeitschrift fur Kinderchirurgie (2007), 17(2), 139-41

Abscesses can occur after appendectomy. With the increasing use of laparoscopy, this risk has increased in the same way as the incidence of abscesses related to dropped gallstones increased after ... [more ▼]

Abscesses can occur after appendectomy. With the increasing use of laparoscopy, this risk has increased in the same way as the incidence of abscesses related to dropped gallstones increased after laparoscopic cholecystectomy. However, this occurrence has been rarely reported. We describe here the case of a young patient who developed retroperitoneal abscess one year after laparoscopic appendectomy. [less ▲]

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See detailEquity of achievement : A matter of education structures ?
Baye, Ariane ULg; Monseur, Christian ULg

in The Second IEA International Research Conference : Proceedings of the IRC-2006 (2007)

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See detailVaricella-zoster virus modulates NF-kappaB recruitment on selected cellular promoters.
El Mjiyad, Nadia ULg; Bontems, Sébastien ULg; Gloire, Geoffrey ULg et al

in Journal of Virology (2007), 81(23), 13092-104

Intercellular adhesion molecule 1 (ICAM-1) expression is down-regulated in the center of cutaneous varicella lesions despite the expression of proinflammatory cytokines such as gamma interferon and tumor ... [more ▼]

Intercellular adhesion molecule 1 (ICAM-1) expression is down-regulated in the center of cutaneous varicella lesions despite the expression of proinflammatory cytokines such as gamma interferon and tumor necrosis factor alpha (TNF-alpha). To study the molecular basis of this down-regulation, the ICAM-1 induction of TNF-alpha was analyzed in varicella-zoster virus (VZV)-infected melanoma cells (MeWo), leading to the following observations: (i) VZV inhibits the stimulation of icam-1 mRNA synthesis; (ii) despite VZV-induced nuclear translocation of p65, p52, and c-Rel, p50 does not translocate in response to TNF-alpha; (iii) the nuclear p65 present in VZV-infected cells is no longer associated with p50 and is unable to bind the proximal NF-kappaB site of the icam-1 promoter, despite an increased acetylation and accessibility of the promoter in response to TNF-alpha; and (iv) VZV induces the nuclear accumulation of the NF-kappaB inhibitor p100. VZV also inhibits icam-1 stimulation of TNF-alpha by strongly reducing NF-kappaB nuclear translocation in MRC5 fibroblasts. Taken together, these data show that VZV interferes with several aspects of the immune response by inhibiting NF-kappaB binding and the expression of target genes. Targeting NF-kappaB activation, which plays a central role in innate and adaptive immune responses, leads to obvious advantages for the virus, particularly in melanocytes, which are a site of viral replication in the skin. [less ▲]

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See detailEnrichissement des trouées d’abattage à la société Pallisco.
Bourland, Nils ULg; Daïnou, Kasso ULg; Kouadio, Y. L.

Conference given outside the academic context (2007)

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See detailInvestigations on Both Chemical Composition and Insecticidal Activities on Essential Oils of Vepris heterophylla (Rutaceae) from Two Localities of Northern Cameroon Towards Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
Ngamo, Tinkeu L.S.; Noudjou, W.Félicité; Ngassoum, Martin B. et al

in Research Journal of Biological Sciences (2007), 2(1), 57-61

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See detailToxicity Of Some Terpenoids Of Essential Oils Of Xylopia Aethiopica From Cameroon Against Sitophilus Zeamais Motschulsky
Kouninki, Habiba; Hance, Thierry; Noudjou, Félicité A. et al

in Journal of Applied Entomology (2007), 131(4), 269-274

The acute toxicity of essential oils from the whole fruit (EF) or from the fibres of the fruit (FF) of the local aromatic plants Xylopiα αethiopicα Dunal (Annonaceae) collected in north Cameroon was ... [more ▼]

The acute toxicity of essential oils from the whole fruit (EF) or from the fibres of the fruit (FF) of the local aromatic plants Xylopiα αethiopicα Dunal (Annonaceae) collected in north Cameroon was evaluated on Sitophilus zeαmαis adults. A concentration of 1 ml of essential oil per 100 g of maize seeds was tested to determine weevil mortality after 24 h of exposure. Under these conditions, the essential oil derived from both EF and FF of X. αethiopicα led to 100% mortality. In a second step, proportions of active compounds present in the oil of both EF and FF of X. αethiopicα were quantified. The toxicity of the four main compounds was tested against S. zeαmαis: α-pinene, β-pinene, -3-carene and terpinen-4-ol according to their proportion in the essential oil of the concerned plant part. β-pinene and terpinen-4-ol were responsible for 50% of the mortality at the proportion found in EF and FF essential oils respectively. When mixed, a synergic effect of the compounds was observed that restored the mortality percentage observed for the crude oil. It appears that X. αethiopicα essential oil could be a potential source of natural and low-cost insecticide to control storage pests. [less ▲]

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See detailLocked-in syndrome et états de conscience altérée: comment détecter la conscience?
Vanhaudenhuyse, Audrey ULg

in Pellas, Frederique; Kiefer; Weiss (Eds.) et al Entretiens de Médecine Physique et de Réadaptation (2007)

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