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See detailCompetition for amino acids as a potential mechanism of Aureobasidium pullulans against post-harvest apple blue mold.
Bencheqroun, S. K.; Bajji, M.; Labhilili, M. et al

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2007), 30(6(1)),

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See detailNouvelles approches dans la prise en charge de l'infection a VIH.
Chandrika, K.; Dellot, Patricia ULg; Frippiat, Frédéric ULg et al

in Revue Médicale de Liège (2007), 62 Spec No

HIV infection remains a major problem of public health in Belgium as well as globally. The number of new diagnosies of HIV infection in Belgium remains between two and three daily. Given the dramatic ... [more ▼]

HIV infection remains a major problem of public health in Belgium as well as globally. The number of new diagnosies of HIV infection in Belgium remains between two and three daily. Given the dramatic effect of antiretroviral therapy on the mortality due to HIV infection, the number of patients is constantly increasing. The different problems related to HIV care are also changing. Aging of the patients and chronic exposure to antiretroviral medications have induced new complications. We will present in this brief article several new experimental and clinical approaches in which our centre has participated during the last two years. [less ▲]

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See detailLa régionalisation des débits en Région wallonne
Gailliez, Sebastien; Dautrebande, Sylvia; Degre, Aurore ULg

(2007)

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See detailLes navettes scolaires en Belgique : situation en 2001 et évolution 1991-2001
Halleux, Jean-Marie ULg; Rixhon, Gilles ULg; Lambotte, Jean-Marc ULg et al

in Statistics Belgium Working Paper (2007), (16),

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See detailLandslide detection from remote sensing images using statistical and ANN classification methods
Danneels, Gaëlle; Havenith, Hans-Balder ULg; Pirard, Eric ULg

in Geophysical Research Abstracts (2007)

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See detailDes images et des récits qui disent le changement, des questions, des impasses et des possibles
Stassart, Pierre M ULg; Lecomte, Nadége

in Regards croisés (2007)

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See detailMolecular organization of surfactin-phospholipid monolayers: Effect of phospholipid chain length and polar head
Bouffioux, O.; Berquand, A.; Eeman, M. et al

in Biochimica et Biophysica Acta - Biomembranes (2007), 1768(7), 1758-1768

Mixed monolayers of the surface-active lipopeptide surfactin-C-15 and various lipids differing by their chain length (DMPC, DPPC, DSPC) and polar headgroup (DPPC, DPPE, DPPS) were investigated by atomic ... [more ▼]

Mixed monolayers of the surface-active lipopeptide surfactin-C-15 and various lipids differing by their chain length (DMPC, DPPC, DSPC) and polar headgroup (DPPC, DPPE, DPPS) were investigated by atomic force microscopy (AFM) in combination with molecular modeling (Hypermatrix procedure) and surface pressure-area isotherms. In the presence of surfactin, AFM topographic images showed phase separation for each surfactin-phospholipid system except for surfactin-DMPC, which was in good agreement with compression isotherms. On the basis of domain shape and line tension theory, we conclude that the miscibility between surfactin and phospholipids is higher for shorter chain lengths (DMPC > DPPC > DSPC) and that the polar headgroup of phospholipids influences the miscibility of surfactin in the order DPPC > DPPE > DPPS. Molecular modeling data show that mixing surfactin and DPPC has a destabilizing effect on DPPC monolayer while it has a stabilizing effect towards DPPE and DPPS molecular interactions. Our results provide valuable information on the activity mechanism of surfactin and may be useful for the design of surfactin delivery systems. (c) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailNumerical modelling of storage racks subjected to earthquake
Degée, Hervé ULg; Denoël, Vincent ULg

in Proceedings of COMPDYN 07, Conference on Computational Dynamics (2007)

This paper presents some aspects of the non linear dynamic time-history analysis of storage racks made of thin-walled steel products commonly used in warehouses when they are subjected to an earthquake ... [more ▼]

This paper presents some aspects of the non linear dynamic time-history analysis of storage racks made of thin-walled steel products commonly used in warehouses when they are subjected to an earthquake action. It focuses essentially on the accounting for structural non-linearities (geometric second order behavior of the structure and non-linear material be-havior of the joints) and for the possible relative motion between the rack and the stored goods that occurs as soon as the inertial force exceeds the friction resistance. In particular, it presents the algorithm used of to couple these two problems, followed by some simple appli-cations and comparisons with test results. [less ▲]

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See detailEtude d'impact de la MTR en Région wallonne
Delille, Nicolas ULg

Report (2007)

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See detailDifferential effects of hypoxia on etoposide-induced apoptosis according to the cancer cell lines
Cosse, Jean-Philippe ULg; Sermeus, Audrey; Vannuvel, Kayleen et al

in Molecular Cancer (2007)

Background: It is more and more recognized that hypoxia plays a role in the resistance of cancer cells to chemotherapy. However, the mechanisms underlying this resistance still need deeper understanding ... [more ▼]

Background: It is more and more recognized that hypoxia plays a role in the resistance of cancer cells to chemotherapy. However, the mechanisms underlying this resistance still need deeper understanding. The aim of this study was to investigate the effect of hypoxia on this process since hypoxia is one of the hallmarks of tumor environment. Results: The effect of hypoxia on the apoptosis induced by etoposide, one drug commonly used in chemotherapy, was investigated using three different cancer cell lines. Gene expression changes were also studied in order to delineate the mechanisms responsible for the hypoxia-induced chemoresistance. We observed that hypoxia differentially influenced etoposide-induced cell death according to the cancer cell type. While hypoxia inhibited apoptosis in hepatoma HepG2 cells, it had no influence in lung carcinoma A549 cells and further enhanced it in breast cancer MCF-7 cells. Etoposide increased p53 activity in all cell lines while hypoxia alone decreased it only in HepG2 cells. Hypoxia had no influence on the etoposide-induced p53 activity in A549, increased p53 abundance in MCF-7 cells but markedly decreased p53 activity in HepG2 cells. Using low density DNA arrays to detect the expression of genes involved in the regulation of apoptosis, etoposide and hypoxia were shown to each influence the expression of numerous genes, many of the ones influenced by etoposide being p53 target genes. Again, the influence of hypoxia on the etoposideinduced changes was different according to the cell type. Conclusion: These results evidenced that there was a striking parallelism between the effect of hypoxia on the etoposide-induced p53 stabilization as well as p53 target gene expression and its effect on the etoposide-induced apoptosis according to the cell type. They are very interesting not only because they provide one possible mechanism for the induction of chemoresistance under hypoxic conditions in cells like HepG2 but also because they indicate that not all cell types respond the same way. This knowledge is of importance in designing adequate treatment according to the type of tumors. [less ▲]

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See detailNon-Rigid Object Tracker Based On a Robust Combination of Parametric Active Contour and Point Distribution Model
Olszewska, Joanna; Mathes, Tom; De Vleeschouwer, Christophe et al

in Proceedings of the SPIE Conference on Visual Communication and Image Processing (2007)

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See detailMultatuli in Frankrijk. Van anarchist tot altermondialist
Andringa, Kim ULg

in Over Multatuli (2007)

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