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See detailA phosphorylation switch regulates the transcriptional activation of cell cycle regulator p21 by histone deacetylase inhibitors.
Simboeck, E.; Sawicka, A.; Zupkovitz, G. et al

in Journal of Biological Chemistry (2010)

Histone deacetylase inhibitors induce cell cycle arrest and apoptosis in tumor cells and are therefore promising anti-cancer drugs. The CDK inhibitor p21 is activated in HDAC inhibitor treated tumor cells ... [more ▼]

Histone deacetylase inhibitors induce cell cycle arrest and apoptosis in tumor cells and are therefore promising anti-cancer drugs. The CDK inhibitor p21 is activated in HDAC inhibitor treated tumor cells and its growth-inhibitory function contributes to the anti-tumorigenic effect of HDAC inhibitors. We show here that induction of p21 by trichostatin A involves MAP kinase signaling. Activation of the MAP kinase signaling pathway by growth factors or stress signals results in histone H3 serine 10 phosphorylation at the p21 promoter and is crucial for acetylation of the neighboring lysine 14 and recruitment of activated RNA polymerase II in response to trichostatin A treatment. In non-induced cells, the protein phosphatase PP2A is associated with the p21 gene and counteracts its activation. Induction of p21 is linked to simultaneous acetylation and phosphorylation of histone H3. The dual modification mark H3S10phK14ac at the activated p21 promoter is recognized by the phospho-binding protein 14-3-3 zeta, which protects the phosphoacetylation mark from being processed by PP2A. Taken together we have revealed a crosstalk of reversible phosphorylation and acetylation signals that controls the activation of p21 by HDAC inhibitors and identify the phosphatase PP2A as chromatin-associated transcriptional repressor in mammalian cells. [less ▲]

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See detailEntrée "Pierre Rivière"
Thirion, Nicolas ULg

in Di Folco, Philippe (Ed.) Dictionnaire de la mort (2010)

Etude visant à expliquer les raisons de la postérité du parricide Pierre Rivière, en particulier en ce qu'elle signe l'avènement et le renforcement constant, depuis le 19 siècle, d'une société ... [more ▼]

Etude visant à expliquer les raisons de la postérité du parricide Pierre Rivière, en particulier en ce qu'elle signe l'avènement et le renforcement constant, depuis le 19 siècle, d'une société disciplinaire [less ▲]

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See detailLa vignette thérapeutiqu de l'étudiant Diagnostic différentiel étiologique des oedmes
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2010), 65(11), 655-661

Oedema is a frequent disorder and the easily detectable consequence of an increase of fluid located in the interstitial tissue. It could be localized or generalized and related either to a primary ... [more ▼]

Oedema is a frequent disorder and the easily detectable consequence of an increase of fluid located in the interstitial tissue. It could be localized or generalized and related either to a primary disturbance of hemodynamics at the capillary level, due to a modification of the Starling’s law components with secondary water and saline retention, or to a primary retention of salt and water linked to a kidney abnormality. Generalized forms are pitting oedema, most often painless, white, bilateral and symmetric, distributed at the lower part of the body (localisation according to the gravitation law). They are different in their characteristics from localized oedema or lymphoedema which are tough. We propose a diagnostic approach based on medical history, clinical examination which allows a confident medical diagnosis and so an adapted therapy. [less ▲]

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See detailLa portée critique de l'analyse des idées d'existence et de néant
Caeymaex, Florence ULg

in François, Arnaud (Ed.) L'évolution créatrice de Bergson (2010)

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See detailSex steroid-induced neuroplasticity and behavioral activation in birds
Balthazart, Jacques ULg; Charlier, Thierry ULg; Barker, Jennifer ULg et al

in European Journal of Neuroscience (2010), 32

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See detailA Xylophone Bar Magnetometer for micro/pico satellites
Lamy, Hervé; Niyonzima, Innocent ULg; Rochus, Pierre ULg et al

in Acta Astronautica (2010), 67(7-8), 793-809

The Belgian Institute of Space Aeronomy (BIRA-IASB), "Centre Spatial de Liège" (CSL), "Laboratoire de Techniques Aéronautiques et Spatiales" (LTAS) of University of Liège, and the Microwave Laboratory of ... [more ▼]

The Belgian Institute of Space Aeronomy (BIRA-IASB), "Centre Spatial de Liège" (CSL), "Laboratoire de Techniques Aéronautiques et Spatiales" (LTAS) of University of Liège, and the Microwave Laboratory of University of Louvain-La-Neuve (UCL) are collaborating in order to develop a miniature version of a xylophone bar magnetometer (XBM) using Microelectromechanical Systems (MEMS) technology. The device is based on a classical resonating xylophone bar. A sinusoidal current is supplied to the bar oscillating at the fundamental transverse resonant mode of the bar. When an external magnetic field is present, the resulting Lorentz force causes the bar to vibrate at its fundamental frequency with an amplitude directly proportional to the vertical component of the ambient magnetic field. In this paper we illustrate the working principles of the XBM and the challenges to reach the required sensitivity in space applications (measuring magnetic fields with an accuracy of approximately of 0.1 nT). The optimal dimensions of the MEMS XBM are discussed as well as the constraints on the current flowing through the bar. Analytical calculations as well as simulations with finite element methods have been used. Prototypes have been built in the Microwave Laboratory using Silicon on Insulator (SOI) and bulk micromachining processes. Several methods to accurately measure the displacement of the bar are proposed. [less ▲]

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See detailStructures in Fire. Proceedings of the Sixth International Conference
Kodur, Venkatesh; Franssen, Jean-Marc ULg

Book published by DEStech Publications, Inc (2010)

These proceedings contains 122 papers. The covered topics are: steel structures, concrete structures, composite structures, timber structures, connections and fire safety engineering and practice.

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See detailA grid for a precise analysis of daily activities
Wojtasik, Vinciane ULg; Olivier, Catherine ULg; Lekeu, Françoise ULg et al

in Neuropsychological Rehabilitation (2010), 20

Assessment of daily living activities is essential in patients with Alzheimer's disease. Most current tools quantitatively assess overall ability but provide little qualitative information on individual ... [more ▼]

Assessment of daily living activities is essential in patients with Alzheimer's disease. Most current tools quantitatively assess overall ability but provide little qualitative information on individual difficulties. Only a few tools allow therapists to evaluate stereotyped activities and record different types of errors. We capitalised on the Kitchen Activity Assessment to design a widely applicable analysis grid that provides both qualitative and quantitative data on activity performance. A cooking activity was videotaped in 15 patients with dementia and assessed according to the different steps in the execution of the task. The evaluations obtained with our grid showed good correlations between raters, between versions of the grid and between sessions. Moreover, the degree of independence obtained with our analysis of the task correlated with the Kitchen Activity Assessment score and with a global score of cognitive functioning. We conclude that assessment of a daily living activity with this analysis grid is reproducible and relatively independent of the therapist, and thus provides quantitative and qualitative information useful for both evaluating and caring for demented patients. [less ▲]

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See detailMetalub – A Slab Method software for the numerical simulation of mixed lubrication regime. Application to cold rolling
Carretta, Yves ULg; Stephany, Antoine; Legrand, Nicolas et al

in ICTMP 2010 - International Conference on Tribology in Manufacturing processes (2010)

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See detailInterest of lasofoxifene in the treatment of osteoporosis. Evaluation of "Lasofoxifene in postmenopausal women with osteoporosis". N Engl J Med 2010;362:686-96.
Reginster, Jean-Yves ULg

in Expert Opinion on Pharmacotherapy (2010), 11(10), 1773-5

Lasofoxifene, a new selective estrogen receptor modulator (SERM), was investigated to assess its efficacy and safety in the management of postmenopausal osteoporosis. A dose of 0.5 mg/day of lasofoxifene ... [more ▼]

Lasofoxifene, a new selective estrogen receptor modulator (SERM), was investigated to assess its efficacy and safety in the management of postmenopausal osteoporosis. A dose of 0.5 mg/day of lasofoxifene, given to postmenopausal women with osteoporosis, induced a reduction in vertebral fracture rates after 3 years and a reduction, after 5 years, of nonvertebral fractures, estrogen receptor-positive and invasive breast cancers, major coronary heart diseases and strokes. However, this dose was associated with significant side effects including venous thromboembolisms, pulmonary embolisms, leg cramps, hot flushes, uterine polyps, endometrial hypertrophy, arthralgia and vaginal candidiasis. Since no effect was evidenced on hip fractures, the risk-benefit ratio of this new medication, compared with previously marketed SERMs is, at best, uncertain. [less ▲]

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See detailKnock-down of the COX3 and COX17 gene expression of cytochrome c oxidase in the unicellular green alga Chlamydomonas reinhardtii.
Remacle, Claire ULg; Coosemans, Nadine ULg; Jans, Frédéric ULg et al

in Plant Molecular Biology (2010), 74(3), 223-2363

The COX3 gene encodes a core subunit of mitochondrial cytochrome c oxidase (complex IV) whereas the COX17 gene encodes a chaperone delivering copper to the enzyme. Mutants of these two genes were isolated ... [more ▼]

The COX3 gene encodes a core subunit of mitochondrial cytochrome c oxidase (complex IV) whereas the COX17 gene encodes a chaperone delivering copper to the enzyme. Mutants of these two genes were isolated by RNA interference in the microalga Chlamydomonas. The COX3 mRNA was completely lacking in the cox3-RNAi mutant and no activity and assembly of complex IV were detected. The cox17-RNAi mutant presented a reduced level of COX17 mRNA, a reduced activity of the cytochrome c oxidase but no modification of its amount. The cox3-RNAi mutant had only 40% of the wild-type rate of dark respiration which was cyanide-insensitive. The mutant presented a 60% decrease of H(2)O(2) production in the dark compared to wild type, which probably accounts for a reduced electron leakage by respiratory complexes III and IV. In contrast, the cox17-RNAi mutant showed no modification of respiration and of H(2)O(2) production in the dark but a two to threefold increase of H(2)O(2) in the light compared to wild type and the cox3-RNAi mutant. The cox17-RNAi mutant was more sensitive to cadmium than the wild-type and cox3-RNAi strains. This suggested that besides its role in complex IV assembly, Cox17 could have additional functions in the cell such as metal detoxification or Reactive Oxygen Species protection or signaling. Concerning Cox3, its role in Chlamydomonas complex IV is similar to that of other eukaryotes although this subunit is encoded in the nuclear genome in the alga contrary to the situation found in all other organisms. [less ▲]

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See detailReanalysis of death risk in long-term follow-up in infliximab patients versus controls
Fidder, H.; Van Steen, Kristel ULg; Van Assche, G. et al

in Gut (2010), 59

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See detailDual approach for an accurate estimation of pull-in voltage
Rochus, Véronique ULg; Lemaire, Etienne ULg; Geuzaine, Christophe ULg

in Proceedings of the IVth European Conference on Computational Mechanics (ECCM 2010) (2010)

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See detailDosage par GC/QQQ de huit pesticides organochlorés dans le sérum
Dubois, Nathalie ULg; Elbaz, A.; Charlier, Corinne ULg

in Acta Clinica Belgica (2010), 65(1), 58-64

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See detailImmortal time bias and infliximab-related mortality and malignancy incidence
Fidder, H.; Van Steen, Kristel ULg; Van Assche, G. et al

in Gut (2010), 59

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See detail"Fitness" versus "fatness": impacts cardio-metaboliques respectifs aux differents ages de la vie.
Esser, N.; Paquot, Nicolas ULg; Scheen, André ULg

in Revue Médicale de Liège (2010), 65(4), 199-205

Almost 35% of overweight or obese individuals are free of any metabolic disorder. This may be explained by a favourable fat distribution. However, those individuals also have a higher level of physical ... [more ▼]

Almost 35% of overweight or obese individuals are free of any metabolic disorder. This may be explained by a favourable fat distribution. However, those individuals also have a higher level of physical fitness. Therefore, deleterious cardiometabolic effects of excessive fat mass ("fatness") might be counterbalanced by regular physical activity leading to high cardiorespiratory fitness ("fitness"). The present article first analyzes the various pathophysiological mechanisms explaining why muscular exercise has beneficial effects and second, describes the relationship between "fitness" and "fatness" and their respective cardiometabolic consequences at various ages: adolescents, adults and elderly people. [less ▲]

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See detailDes romanciers "pour la jeunesse" qui ne le restent pas : Circulation des auteurs entre le champ de la littérature de jeunesse et celui de la littérature générale
Delbrassine, Daniel ULg

in Foucault, Jean, Manson, Michel, Pinhas, Luc (Ed.) L'Edition de jeunesse francophone face à la mondialisation (2010)

Etude d'un corpus d'auteurs contemporains pour adolescents. L'évolution de leur bibliographie entre 2000 et 2007 démontre que beaucoup sont devenus des auteurs "mixtes", c'est-à-dire actifs à l'adresse de ... [more ▼]

Etude d'un corpus d'auteurs contemporains pour adolescents. L'évolution de leur bibliographie entre 2000 et 2007 démontre que beaucoup sont devenus des auteurs "mixtes", c'est-à-dire actifs à l'adresse de deux publics distincts (jeunes et adultes). [less ▲]

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