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See detailDexamethasone-induced accumulation of a fibronectin and collagen extracellular matrix in transformed human cells.
Furcht, L. T.; Mosher, D. F.; Wendelschafer-Crabb, G. et al

in Nature (1979), 277(5695), 393-5

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See detailThe dexamethasone-induced inhibition of proliferation, migration and invasion in glioma cell lines is antagonized by macrophage migration inhibitory factor (MIF) and can be enhanced by specific MIF inhibitors.
Piette, Caroline ULg; Deprez, Manuel ULg; Roger, Th et al

in Journal of Biological Chemistry (2009), 284(47), 32483-92

Glioblastomas (GBMs) are the most frequent and malignant brain tumors in adults. Glucocorticoids (GCs) are routinely used in the treatment of GBMs for their capacity to reduce the tumor-associated edema ... [more ▼]

Glioblastomas (GBMs) are the most frequent and malignant brain tumors in adults. Glucocorticoids (GCs) are routinely used in the treatment of GBMs for their capacity to reduce the tumor-associated edema. Few in vitro studies have suggested that GCs inhibit the migration and invasion of GBM cells through the induction of MAPK phosphatase 1 (MKP-1). Macrophage migration inhibitory factor (MIF), an endogenous GC antagonist is up-regulated in GBMs. Recently, MIF has been involved in tumor growth and migration/invasion and specific MIF inhibitors have been developed on their capacity to block its enzymatic tautomerase activity site. In this study, we characterized several glioma cell lines for their MIF production. U373 MG cells were selected for their very low endogenous levels of MIF. We showed that dexamethasone inhibits the migration and invasion of U373 MG cells, through a glucocorticoid receptor (GR)- dependent inhibition of the ERK1/2 MAPK pathway. Oppositely, we found that exogenous MIF increases U373 MG migration and invasion through the stimulation of the ERK1/2 MAP kinase pathway and that this activation is CD74 independent. Finally, we used the Hs 683 glioma cells that are resistant to GCs and produce high levels of endogenous MIF, and showed that the specific MIF inhibitor ISO-1 could restore dexamethasone sensitivity in these cells. Collectively, our results indicate an intricate pathway between MIF expression and GC resistance. They suggest that MIF inhibitors could increase the response of GBMs to corticotherapy. [less ▲]

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See detailLe défi des générations, sous la direction de J. Grand’Maison, L. Baroni et J.-M. Gauthier (compte rendu)
Fournier, Bernard ULg

in Recherches Sociographiques : Revue Pluridisciplinaire d'Etudes sur le Québec et le Canada français. (1999), XL(1)

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See detailDFT investigation of the reaction mechanism for the guanidine catalyzed ring-opening of cyclic carbonates by aromatic and alkyl-amines
Alves, Margot ULg; Méreau, Raphaël; Grignard, Bruno ULg et al

in RSC Advances (2017), 7(31), 18993-19001

The guanidine catalysed aminolysis of propylene carbonate has been investigated using the density functional theory (DFT) and highlights that different reaction pathways are involved depending on the ... [more ▼]

The guanidine catalysed aminolysis of propylene carbonate has been investigated using the density functional theory (DFT) and highlights that different reaction pathways are involved depending on the aromatic or aliphatic nature of the amine. The structural ability of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) to simultaneously give and receive protons was demonstrated by a detailed mechanistic investigation. The bifunctional activity (base/H-bond donor) of TBD significantly reduces the Gibbs energy of the reaction and allows understanding its higher efficiency compared to its methyl counterpart (MTBD). [less ▲]

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See detailDFT studies of solvation effects on the nanosize bare, thiolated and redox active ligated Au55 cluster
Periyasamy, Ganga ULg; Durgun, Engin; Raty, Jean-Yves ULg et al

in Journal of Physical Chemistry C: Nanomaterials, Interfaces, and Hard Matter (2010), Protected Metallic Clusters, Quantum Wells and Metal-Nanocrystal Molecules Symposium

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See detailDGTs, a complementary tool towards more efficient biomonitoring practices
Richir, Jonathan ULg; Lepoint, Gilles ULg; Donnay, Annick et al

Conference (2015, October 01)

Among the diversity of contaminants, trace elements (TEs) remain of concern because of their persistence, their ability to accumulate in biota and their toxicity. The direct measurement of their dissolved ... [more ▼]

Among the diversity of contaminants, trace elements (TEs) remain of concern because of their persistence, their ability to accumulate in biota and their toxicity. The direct measurement of their dissolved concentrations only gives punctual and fluctuating information, and often remains below detection limits of analytical methods. The more appropriate use of sentinel organisms, or bioindicators, to monitor TEs has thus often been preferred in environmental surveys. The introduction of the diffusive gradients in thin films (DGTs) technique has however participated to progressively change this binary view - bioindicator vs water - of the coastal monitoring of TEs, and DGTs rapidly became a relevant complementary tool to bioindicators, has illustrated below. In the framework of the STARECAPMED project, the ecology and the ecotoxicology of TEs were studied in the seagrass Posidonia oceanica (L.) Delile and the mussel Mytilus galloprovincialis Lamarck, 1819. DGTs (free- and pore-water probes) were deployed before sampling of organisms. TEs were also analyzed in suspended matter (dissolved and suspended-particulate TE speciation). Studies were performed in the Calvi Bay (Corsica, France), northwestern Mediterranean. TE concentrations in organisms and suspended matter or in DGT resins were measured by DRC-ICP-MS after HNO3/H202 mineralization or after a 24h elution in HNO3 1M, respectively. (1) TE bioaccumulation was first seasonally studied in P. oceanica over 3 years. Dissolved TE concentrations monitored with DGTs were low to very low. TE bioaccumulation dynamics in P. oceanica could thus be linked to the natural physiological cycle of the plant, in clean environmental conditions. (2) To complement that field survey, isolated seagrasses were in situ contaminated with TEs at environmental relevant concentrations. Through the use of DGTs, TE uptake kinetics were modelled for seagrasses exposed to know bioavailable concentrations of contaminants, as were loss kinetics during the following depuration phase. The TE sequestration ability of a healthy P. oceanica meadow facing sudden trace metal contamination events could also be quantified. (3) The deployment of pore-water DGT probes in bare-sand or seagrass colonized sediments further showed that, through its stabilizing function of the seabed, P. oceanica maintained higher TE levels in the pore-water. P. oceanica meadows thus offer a significant “depuration-filtering” ecological service along highly anthropized Mediterranean coasts. M. galloprovincialis are widely used in large spatial scale coastal monitoring surveys. (4) The deployment of caged mussels together with DGTs showed that the little contaminated water body of the Calvi Bay was relatively homogenous. It also allowed to calculate TE bioaccumulation towards mussels in reference conditions, and to compare it to native mussel populations. (5) Finally, during a 5 months mussel caging survey, mussels and suspended matter were collected weekly to monthly, such as were deployed DGTs. The physiological status of mussels, the speciation of TEs between their dissolved and suspended-particulate phases, and their relative influence on TE bioaccumulation dynamics in mussels were investigated. In conclusion, these case studies properly demonstrate how DGT probes can be used as a relevant and complementary tool to bioindicators. Their concomitant use should therefore be privileged in monitoring surveys. [less ▲]

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See detailDHCo Délivrance d'héroïne sous contrôle médical
Ansseau, Marc ULg; Gustin, Frédéric; Hodiaumont, Fabienne et al

Book published by Academia Press (2005)

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See detailDHEA et intracrinologie de jouvence pour la peau? Entre raison et magie.
Bourguignon, Raphael; Uhoda, I.; Henry, Frédérique ULg et al

in Revue Médicale de Liège (2002), 57(7), 438-42

Slowing down ageing is a goal for a large part of the population. Some mercantile claims hold out bright prospects to DHEA. The effects of this hormone manifest themselves after intracrine conversion. In ... [more ▼]

Slowing down ageing is a goal for a large part of the population. Some mercantile claims hold out bright prospects to DHEA. The effects of this hormone manifest themselves after intracrine conversion. In the skin, sebaceous glands enlarge and seborrhoea increases in post-menopausal women. No other effect is clinically discernable on the skin. At this level, DHEA does not show efficacy comparable to that of other anti-ageing compounds. [less ▲]

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See detailDi sesso femminile
Tuil, Karine; Ricciardi, Stefania ULg

Book published by Voland (2005)

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See detail(Di)-aminoguanidine Functionalization through Transamination: An Avenue to an Auspicious Class of Supramolecular Synthons
Naik, Anil D; Tinant, Bernard; Léonard, Alexandre ULg et al

in Crystal Growth & Design (2011), 11

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See detail« La diabase de Challes, près de Stavelot» : Rapport sur une note de M. A. Renard par C. Malaise
Malaise, Constantin ULg

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (1878), 2e série(46), 186-188

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See detailDiabète : aspects particuliers. Microangiopathie et macroangiopathie diabétique
RADERMECKER, Régis ULg

Scientific conference (2011, March 18)

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See detailLe diabete de l'enfant et de l'adolescent. 1. Prise en charge par le Service Universitaire de Pediatrie et la Cellule "Education-Diabete en Pediatrie"
LEBRETHON, Marie-Christine ULg; Philippart, D.; Rocour-Brumioul, D. et al

in Revue Médicale de Liège (2005), 60(5-6, May-Jun), 313-9

The management and follow up of diabetes in youth is a multidisciplinary challenge due to both short and long term objectives. Awareness of the feelings and problems faced by the families is critical. The ... [more ▼]

The management and follow up of diabetes in youth is a multidisciplinary challenge due to both short and long term objectives. Awareness of the feelings and problems faced by the families is critical. The experience of our team has started in the 1960s and is briefly described and updated in this article. [less ▲]

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See detailLe diabète de l'enfant et de l'adolescent. 2 Aspects particuliers chez l'adolescent
BOURGUIGNON, Jean-Pierre ULg; Rocour-Brumioul, Danielle ULg; COLLARD, J et al

in Revue Médicale de Liège (2005), 60(5-6), 320-321

L'adolescent diabétique confronte les "soignants" à quelques aspects spécifiques, tant au moment du diagnostic que lors du suivi. L'existence de diabète de type 2 ne doit pas être méconnue, étant donné la ... [more ▼]

L'adolescent diabétique confronte les "soignants" à quelques aspects spécifiques, tant au moment du diagnostic que lors du suivi. L'existence de diabète de type 2 ne doit pas être méconnue, étant donné la fréquence croissante de celui-ci en relation avec la progression de l'obésité chez les sujets jeunes. Lors de l'éducation initiale, la place des parents doit être prise en compte et réfléchie, tout en créant un espace propre pour l'adolescent. Dans le suivi, toutes les dimensions du processus adolescentaire seront prises en considération en plus du diabète. Ceci implique, notamment, les comportements exploratoires ou à risques, les sentiments de marginalisation, voire la révolte, et les difficultés de prendre en compte le risque de complications à long terme. Une attention particulière sera portée sur la période de transition vers une consultation pour adultes. [less ▲]

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See detailLe diabete de type 1 et la maladie coeliaque.
Mathieu, Sandrine ULg; Stassen, A.; Paquot, Nicolas ULg et al

in Revue Médicale de Liège (2006), 61(9), 637-42

Celiac disease is more prevalent in type 1 diabetic patients than in the general population. The exact reason for this association remains unknown. Two hypotheses are taken into consideration: either a ... [more ▼]

Celiac disease is more prevalent in type 1 diabetic patients than in the general population. The exact reason for this association remains unknown. Two hypotheses are taken into consideration: either a common genetic background or an immune response against Langerhans islets triggered by celiac disease. This review presents recent data about this association and its consequences in clinical practice. [less ▲]

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See detailLe diabète de type 1: de la prédisposition génétique à un contexte environnemental hypothétique
PHILIPS, Jean-Christophe ULg; RADERMECKER, Régis ULg

in Revue de l'Association Belge du Diabète/ Supplément médical (2012), 55

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See detailLe diabete de type 1: de la predisposition genetique a un contexte environnemental hypothetique.
Phlips, J.-C.; Radermecker, Régis ULg

in Revue medicale de Liege (2012), 67(5-6), 319-25

Type 1 diabetes is an autoimmune disease that results in a progressive (complete in most cases) destruction of insulin-secreting beta cells from Langerhans islets. Even if the autoimmune process becomes ... [more ▼]

Type 1 diabetes is an autoimmune disease that results in a progressive (complete in most cases) destruction of insulin-secreting beta cells from Langerhans islets. Even if the autoimmune process becomes to be well known, no one is yet sure what specifically prompts the autoimmune response that destroys the body's ability to produce insulin. Etiology of this complex disease combines a genetic predisposition and still (almost) unknown environmental factors that trigger autoimmuninty specifically targeting beta cells. Genetic HLA predispositions are clearly identified. However, only few people with apparent genetic predisposition to type 1 diabetes actually end up getting the disease. Moreover, the remarkable increase of type 1 diabetes prevalence observed in numerous countries can not be explained by genetics. Because genetic factors can't predict alone the development of type 1 diabetes, environmental factors must be involved such as viral infections, toxins from food, cow milk during childhood (instead of breast feeding) or vitamin D deficiency. This paper aims at describing the role of the genetic predisposition and the environmental hypothesis which can be involved in the development of type 1 diabetes. We will conclude by briefly describing clinical trials targeting either the immune response or the potentially toxic environment. [less ▲]

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See detailLe diabete de type 2 au coeur du syndrome metabolique: plaidoyer pour une prise en charge globale.
Scheen, André ULg; Van Gaal, L. F.

in Revue Médicale de Liège (2005), 60(5-6), 566-71

Type 2 diabetes is frequently associated with other comorbidities among which abdominal obesity, arterial hypertension, dyslipidaemia and a prothrombotic state. All these cardiovascular risk factors ... [more ▼]

Type 2 diabetes is frequently associated with other comorbidities among which abdominal obesity, arterial hypertension, dyslipidaemia and a prothrombotic state. All these cardiovascular risk factors belong to the so-called metabolic syndrome. The appropriate management of a patient with type 2 diabetes requires a global approach targeting each risk factor in order to reduce cardiovascular morbidity and mortality. Microalbuminuria is correlated with markers of the metabolic syndrome in diabetic patients as shown by the DANA survey performed among general practitioners from the areas of Liege and Antwerp and, in this type of patients, is considered as a prognostic factor of cardiovascular complications. The OCAPI study, performed among Belgian internists and diabetologists, demonstrated that two thirds of diabetic patients have a metabolic syndrome and that the objectives are far from being reached in clinical practice, especially as far as lipid and arterial pressure control is concerned. Interestingly, the Danish STENO-2 study demonstrated that an intensive multi-risk approach reduces the incidence of both micro- and macroangiopathic complications by more than 50%. This challenge represents a major public health issue considering the high and increasing prevalence of type 2 diabetes and the major burden associated to this disease. [less ▲]

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