Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailMacromolecular engineering of polylactones and polylactides. XXV. Synthesis and characterization of bioerodible amphiphilic networks and their use as controlled drug delivery systems
Barakat, Ibrahim; Dubois, Philippe ULg; Grandfils, Christian ULg et al

in Journal of Polymer Science. Part A, Polymer Chemistry (1999), 37(14), 2401-2411

Well-defined ,-methacryloyl poly--caprolactone (PCL) and poly(d,l)-lactide P(D,L)LA dimacromonomers have been synthesized by living ring-opening polymerization of the parent monomers initiated by ... [more ▼]

Well-defined ,-methacryloyl poly--caprolactone (PCL) and poly(d,l)-lactide P(D,L)LA dimacromonomers have been synthesized by living ring-opening polymerization of the parent monomers initiated by diethylaluminum 2-hydroxyethylmethacrylate (Et2AlO(CH2)2OC(O)C(CH3)CH2) and terminated by reaction of the propagating Al alkoxide groups with methacryloyl chloride. These dimacromonomers have been copolymerized with a hydrophilic comonomer, i.e., 2-hydroxyethylmethacrylate, in bulk at 65°C by using benzoyl peroxide as a free-radical initiator. The swelling ability of the amphiphilic PHEMA/PCL or P(D,L)LA networks has been investigated in both aqueous and organic media. Effect of network composition and molecular weight of the dimacromonomer on the swelling kinetics and the equilibrium solvent uptake has been studied. Lipophilic dexamethasone acetate and the hydrophilic sodium phosphate counterpart have been incorporated into the amphiphilic gels and their release has been studied in relation to the gel characteristics. [less ▲]

Detailed reference viewed: 17 (1 ULg)
See detailMacromolecular engineering to the service of advanced drug delivery systems
Jérôme, Christine ULg

Conference (2010, September 16)

Detailed reference viewed: 14 (1 ULg)
See detailMacromolecular engineering to the service of advanced drug delivery systems
Jérôme, Christine ULg

Conference (2010, October 25)

Detailed reference viewed: 4 (2 ULg)
Full Text
Peer Reviewed
See detailMacronutrient composition of three cucurbit species cultivated for seed consumption in Côte d'Ivoire
Loukou, A. L.; Gnakri, D.; Djè, Y. et al

in African Journal of Biotechnology (2007), 6(5), 529-533

Detailed reference viewed: 31 (7 ULg)
Full Text
Peer Reviewed
See detailMacronutrients supply during Lactation and Infant Growth
Senterre, Thibault ULg; Rigo, Jacques ULg

in Symonds, M.; Ramsay, M. (Eds.) Maternal-Fetal Nutrition during Pregnancy and Lactation (2010)

Detailed reference viewed: 24 (3 ULg)
Full Text
Peer Reviewed
See detailMacrophage migration inhibitory factor (MIF) expression in human glioblastomas correlates with vascular endothelial growth factor (VEGF) expression
Munaut, Carine ULg; Boniver, Jacques ULg; Foidart, Jean-Michel ULg et al

in Neuropathology & Applied Neurobiology (2002), 28(6), 452-460

Macrophage migration inhibitory factor (MIF) is a peptide released upon hypothalamo-pituitary stimulation that acts as a potent endogenous antagonist of the glucocorticoid inhibition of acute inflammatory ... [more ▼]

Macrophage migration inhibitory factor (MIF) is a peptide released upon hypothalamo-pituitary stimulation that acts as a potent endogenous antagonist of the glucocorticoid inhibition of acute inflammatory response and subsequent antigen-specific response. MIF also sustains tumour growth as it promotes angiogenesis, overcomes p53-mediated cell growth arrest and inhibits tumour-specific immune responses. Using quantitative reverse transcriptase polymerase chain reaction (RT-PCR) and immunohistochemistry, we studied MIF expression in 35 human glioblastomas and two normal brains. We compared these results with the expression of vascular endothelial growth factor (VEGF), the most potent angiogenic factor in glioblastomas. We detected MIF in normal cortical neurons and glial cells. All glioblastomas were positive for MIF mRNA with expression levels similar to or higher than those of normal brain. MIF immunoreactivity was seen mainly in tumour cells and less frequently in hyperplastic endothelial cells. The expressions of MIF and VEGF mRNA were strongly correlated (P < 0.0001). Our results demonstrate the expression of MIF in human glioblastomas, and indicate a close relationship with VEGF expression. This is of particular interest given the potential modulation of MIF by glucocorticosteroids. [less ▲]

Detailed reference viewed: 57 (3 ULg)
Full Text
Peer Reviewed
See detailMacrophages and Tumor Necrosis Factor Alpha in Toxic Epidermal Necrolysis
Paquet, Philippe ULg; Nikkels, Arjen ULg; Arrese Estrada, Jorge ULg et al

in Archives of Dermatology (1994), 130(5), 605-608

BACKGROUND: We studied the immunopathologic characteristics of five cases of toxic epidermal necrolysis by using a large panel of antibodies. OBSERVATIONS: The pattern and amount of the inflammatory cell ... [more ▼]

BACKGROUND: We studied the immunopathologic characteristics of five cases of toxic epidermal necrolysis by using a large panel of antibodies. OBSERVATIONS: The pattern and amount of the inflammatory cell infiltrate varied according to the stage of the disease. The main constant feature was the prominent involvement of the monocyte-macrophage lineage, including factor XIIIa+HLA-DR+ dendrocytes and CD68+ Mac 387+ macrophages, before and during the epidermal necrosis. The number of CD4+ and CD8+ lymphocytes was comparatively small. This was associated with a dense labeling of the epidermis for tumor necrosis factor alpha. CONCLUSIONS: Cells of the monocyte-macrophage lineage largely outnumber lymphocytes in the lesions of toxic epidermal necrolysis. Tumor necrosis factor alpha is likely a major cytokine that is responsible for necrosis. [less ▲]

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailLes macrophages interstitiels, gardiens de l'homeostasie immune pulmonaire.
Bedoret, Denis; Bureau, Fabrice ULg; Desmet, Christophe ULg

in Medecine Sciences : M/S (2010), 26(3), 229-31

Detailed reference viewed: 63 (20 ULg)
Full Text
See detailMacrophyte biological index for rivers (MBIR) application for an ecological assessment of walloon rivers, prelilminary investigations.
Sossey Alaoui, Khadija ULg; Galoux, D.; Rosillon, Françis ULg

Conference (2009)

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of ... [more ▼]

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of rivers. Within each collected sample, macrophyte data were gathered at species level and the main water quality parameters were analyzed. This involved the use of two approaches: firstly, methods of ordination and classification (Principal Component Analysis and Multiple Factorial Analysis) and secondly, aquatic macrophyte community indexes. The Macrophyte Biological Index for Rivers (MBIR) was used to define the ecological status of the macrophyte community in response to eutrophication pressure. Four trophic qualities were detected in all the monitored stations: 56% of the sites showed a good trophic quality, with the Ardennes region in the leading position and only 2% of the sites showed a poor trophic quality. A Multiple Factorial Analysis (MFA) made it possible to regroup the species according to their ecological affinities and to specify their indicator values in relation to some abiotic parameters. As a result, a rivers typology was outlined based on this analysis. The dendrogram of the Hierarchical Cluster Analysis (HCA) gave three clusters determined by active variables of each compartment that defined functional parts of the Walloon network: Chiloscyphus polyanthos (L.) Corda, Rhynchostegium riparioides(Hedw.)C.Jens., Fontinalis squamosa(Hedw) and Ranunculus penicillatus (Dum.)Bb. showed an oligotrophic status and low mineralization in the Ardennes (GI), while P. pectinatus(Linne), Cladophora glomerata(Linnaeus)proved to be found more often in eutrophicated waters in the Region limoneuse (GIII). Pellia endvifolia (Dicks.)Dum, Fissidens crassipes(Br.Eur);Cinclidotus riparius (Web. & Mohr.) appeared in the Condroz and Famenne, rivers characterized by a high concentration of nitrogen (N-35. NO3-) (GII). [less ▲]

Detailed reference viewed: 176 (9 ULg)
Peer Reviewed
See detailMacrophytes : limitations of using them to assess reservoir status according to the water framework directive
Sossey Alaoui, Khadija ULg; Rosillon, Francis ULg

Conference (2013, July)

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of reservoirs. The use of macrophytes in reservoir monitoring ... [more ▼]

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of reservoirs. The use of macrophytes in reservoir monitoring is still fairly limited and studies are needed on their inter-calibration and sources of variation. Many status assessment methods based on macrophyte communities have been defined for lakes, Nevertheless few of them have been tested for reservoirs. The purpose of the study is to highlight the limitations of using macrophytes to assess reservoir status according to the Water Framework Directive. An assessment of macrophyte composition and abundance and of water quality was carried out in seven Walloon reservoirs between 2010 and 2012. The main limitations of the macrophyte approach for assessing these reservoirs were: i) geographical features, ii) physical variables, iii) water chemistry and iiii) lack of ecological information on the various macrophytic groups, such as helophytes, algae and mosses. Few of the taxa occurring in the Walloon reservoirs have an indicator score for status assessment based on macrophyte communities. We used two assessment methods to test the relevance of using macrophyte communities to assess reservoir status: the Flanders (Belgium) method (BE-FL method) and the United Kingdom method (UK-method). The relationships between macrophyte metrics for both methods and nutrient enrichment were examined. Highly significant correlations were found between the chemical variables (O-P [mg P/l]); P tot (μg P/l); total hardness (°F), conductivity (μS/cm) and the trophic UK-metric (LMNI); and between it and the abundance of ‘Bl-FL disturbance indicators’ metric (V). The ‘UK group of macrophyte species’ metric does not provide direct information on the quality or degree of degradation of the environment from which the sample was taken. [less ▲]

Detailed reference viewed: 20 (3 ULg)
Peer Reviewed
See detailLes macrophytes dans les ruisseaux de référence wallons: caractérisation des sites et typologie floristique
Sossey Alaoui, Khadija ULg; Galoux, Daniel; Rosillon, Francis ULg

in Colloque international des Macrophytyes: IRSTEA, Bordeaux 28-30 mai 2013 (2013, May 30)

La Directive européenne cadre 2000/60/CE sur l’eau a pour objectif l’atteinte du bon état écologique et du bon état chimique au sein des bassins hydrographiques, d'ici 2015. Pour établir l’état écologique ... [more ▼]

La Directive européenne cadre 2000/60/CE sur l’eau a pour objectif l’atteinte du bon état écologique et du bon état chimique au sein des bassins hydrographiques, d'ici 2015. Pour établir l’état écologique, la Directive impose de mesurer l’écart à la référence pour les indicateurs de la qualité biologique des cours d’eau (macroinvertébrés, diatomées, poissons, macrophytes et phytoplancton). L’élaboration d’une typologie macrophytique des ruisseaux de référence du bassin hydrographique de la Meuse, en Wallonie est l’objectif de l’étude. Les 50 sites étudiés font l’objet d’une caractérisation physico-chimique et mésologique et ensuite de relevés de végétation. Ceux-ci sont effectués sur des segments de cours d’eau de 100m de long et le recouvrement de chaque espèce est estimé selon une échelle d’abondance. Les ruisseaux étudiés peuvent être considérés comme le résultat d’un inventaire quasi exhaustif pour la Wallonie. Les plantes supérieures (hydrophytes), les mousses, les hépatiques, les macroalgues sont identifiées sur le terrain et au laboratoire à l’aide du binoculaire et du microscope. Le degré de la pente, l’altitude de la source et du site, l’occupation du sol, la géologie et certaines caractéristiques physico-chimiques de l’eau (ph, conductivité, teneur en calcium, magnésium et alcalinité) permettent de caractériser les stations. Six ensembles de ruisseaux avec leurs espèces caractéristiques sont mis en évidence par le "Two-Way Clustering" et "l’Indicator Species". L'analyse du déterminisme de distribution de la végétation dans les différents ensembles montre que ces derniers sont étroitement liés aux régions naturelles et leur typologie s’inscrit dans la typologie physique choisie par le Service public de Wallonie. [less ▲]

Detailed reference viewed: 33 (3 ULg)
Full Text
Peer Reviewed
See detailMacrophytes: Limitations of Using Them to Assess Reservoir Status According to the Water Framework Directive
Sossey Alaoui, Khadija ULg; Galoux, Daniel; Rosillon, Francis ULg

in International Journal of Water Sciences (2013)

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of natural lakes. The use of macrophytes in reservoir ... [more ▼]

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of natural lakes. The use of macrophytes in reservoir monitoring is still limited and further studies are needed on their inter-calibration and sources of variation. Many status assessment methods based on macrophyte <br />communities have been defined for lakes. Nevertheless, few of them have been tested for reservoirs. The purpose of the study is to highlight the limitations of using macrophytes to assess reservoir status according to the Water Framework Directive. <br />An assessment of macrophyte composition and abundance and of water quality was carried out in nine Walloon reservoirs between 2010 and 2012. The main limitations of the macrophyte approach for assessing these reservoirs were: i) geographical features; ii) physical variables; iii) lack of ecological information on the various macrophytic groups, such as helophytes, algae and mosses. We used two assessment methods to test the relevance of using macrophyte communities to assess reservoir status: the Flanders (Belgium) method (BE-FL method) and the United Kingdom method (UK method). The relationships between macrophyte metrics for both methods and nutrient enrichment were examined. Highly significant correlations were found between the chemical variables O-P [mg P/l]), Total P (µg P/l), Conductivity (µS/cm) and the trophic UK-metric (Lake Macrophyte Nutrient) (LMNI), as well as between such variables and the abundance of Bl-FL "disturbance indicators" metric(V). The UK "group of macrophyte species" metric provided limited information on the quality or degrees of degradation in the environment from which the sample was taken. [less ▲]

Detailed reference viewed: 36 (4 ULg)
Full Text
Peer Reviewed
See detailMacrophytes: limitations of using them to assess reservoir status according to the Water Framework Directive
Sossey Alaoui, Khadija ULg; Galoux, Daniel; Rosillon, Francis ULg

in Peer Review (2013)

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of natural Lakes. The use of macrophytes in reservoir ... [more ▼]

Macrophytes are among the major groups of organisms that the Water Framework Directive (WFD) recommends should be used in assessing the status of natural Lakes. The use of macrophytes in reservoir monitoring is still fairly limited and studies are needed on their inter-calibration and sources of variation. Many status assessment methods based on macrophyte communities have been defined for lakes, Nevertheless few of them have been tested for reservoirs. The purpose of the study is to highlight the limitations of using macrophytes to assess reservoir status according to the Water Framework Directive. An assessment of macrophyte composition and abundance and of water quality was carried out in nine Walloon reservoirs between 2010 and 2012. The main limitations of the macrophyte approach for assessing these reservoirs were: i) geographical features, ii) physical variables and iii) lack of ecological information on the various macrophytic groups, such as helophytes, algae and mosses. We used two assessment methods to test the relevance of using macrophyte communities to assess reservoir status: the Flanders (Belgium) method (BE-FL method) and the United Kingdom method (UK-method). The relationships between macrophyte metrics for both methods and nutrient enrichment were examined. Highly significant correlations were found between the chemical variables (O-P [mg P/l]); Total P (µg P/l); Conductivity (µS/cm) and the trophic UK-metric (Lake Macrophyte Nutrient) (LMNI); and between it and the abundance of Bl-FL "disturbance indicators’ metric (V). The UK "group of macrophyte species’ metric provide a limited information's on the quality or degree of degradation of the environment from which the sample was taken. [less ▲]

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailMacrophytic Distribution and Trophic State of Some Natural and Impacted Watercourses - Belgium Wallonia
Sossey Alaoui, Khadija ULg; Rosillon, Francis ULg

in International Journal of Water Sciences (2013), 2(3), 1-11

In the present paper we investigated macrophyte community structure in 60 natural and impacted stream and river sites distributed throughout the Walloon river network. The objectives were to describe the ... [more ▼]

In the present paper we investigated macrophyte community structure in 60 natural and impacted stream and river sites distributed throughout the Walloon river network. The objectives were to describe the distribution of macrophyte assemblages in relation to physico‐chemical parameters of their environment and to assess the variability in ecological metrics within these watercourses. Two‐way clustering allowed us to simultaneously assign sample units and species to groups by performing two separate cluster analyses. Indicator species analysis allowed us to assess the degree to which a species indicated a group, based on its constancy and distribution of abundance. Six end‐groups were identified as a result of using twoway clustering and indicator species analysis techniques. Hygroamblystegium fluviatile, Chiloscyphus polyanthos and Lemanea fluviatilis were found to characterize acidic and low impacted streams and rivers (G1), while Ranunculus fluitans was found in all low impacted large streams (G2). Potamogeton pectinatus, proved to be more common in eutrophicated waters in the calcareous areas particularly in the ʺLoess low plateauxʺ region (G6). Cinclidotus riparius, Fissidens crassipes and Pellia endiviifolia, appeared in rivers situated in the Condroz region (G4), which was characterized by a high concentration of nitrogen. [less ▲]

Detailed reference viewed: 49 (6 ULg)
Full Text
See detailMacropinocytosis of human papillomaviruses in natural killer cells via CD16 induces cytotoxic granule exocytosis and cytokine secretion
Renoux, V; Langers, I; Clémenceau, B et al

Poster (2011)

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailMacroporous poly(ionic liquid)s and poly(acrylamide)s monoliths from CO2-in-water emulsion templates stabilized by sugar-based surfactants
Boyère, Cédric ULg; Favrelle, Audrey; Léonard, Alexandre ULg et al

in Journal of Materials Chemistry A (2013), 1(29), 8479-8487

Highly interconnected poly(acrylamide) (PAM) and poly(vinylimidazolium) (PVIm) porous monoliths were templated by carbon 10 dioxide-in-water (CO2/W) high internal phase emulsions (HIPEs), a toxic-solvent ... [more ▼]

Highly interconnected poly(acrylamide) (PAM) and poly(vinylimidazolium) (PVIm) porous monoliths were templated by carbon 10 dioxide-in-water (CO2/W) high internal phase emulsions (HIPEs), a toxic-solvent free process. A range of sugar-based fluorinated surfactants prepared by chemoenzymatic synthesis were used as emulsifiers. Both the concentration and the structure of the surfactants, especially the length of their CO2-philic part and of their spacer between the sugar head and the tail, were found to strongly affect the cellular structure and morphology of the PAM polyHIPEs, i.e. the size of pores and cells. A mannose derivative bearing a chain ranging from 6 to 10 perfluorinated carbons and a long spacer emerged as the best stabilizer, leading to a porous monolith with average pores and 15 cells sizes (about 2.6 1m and 5-10 1m, respectively) among the lowest reported for polyHIPEs produced from CO2/W emulsions. The same template then served for the preparation of the first macroporous poly(ionic liquid)s (PILs) polyHIPE by using 1-vinyl-3- ethylimidazolium bromide as monomer. Shrinkage of the final material was prevented by adjusting the divinylimidazolium crosslinker content. The resulting low density polyHIPE exhibits small spherical cells (~5 1m) connected by numerous small pores (~2 1m), confirming that the CO2/W HIPE templating methodology based on fluorinated glycosurfactants is a technique of choice for the 20 preparation of macroporous PILs. [less ▲]

Detailed reference viewed: 47 (16 ULg)
Full Text
See detailMacroporous polyhipes from CO2-in-water emulsion templates stabilized by new sugar-based surfactants
Boyère, Cédric ULg; Favrelle, Audrey; Léonard, Alexandre F. et al

Poster (2013, May 16)

Detailed reference viewed: 13 (4 ULg)
See detailMacroprolactinemia in a patient with prolactinoma : A condition that may occur
Burlacu, M. C.; Valdes Socin, Hernan Gonzalo ULg; Betea, Daniela ULg et al

in 23ème Congrès de la Société Française d'Endocrinologie - Abstract book (2006)

Detailed reference viewed: 6 (0 ULg)