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See detailEffects of fetal bovine serum, FSH and 17ß-Estradiol on the culture of bovine preantral follicles
Hulshof, S. C. J.; Figueiredo, J. R.; Beckers, Jean-François ULiege et al

in Theriogenology (1995), 44(2), 217-226

We describe a 7-d culture in droplets of collagen gel of isolated small bovine preantral follicles in medium with or without 10% fetal bovine serum (FBS). In addition, the effect of human recombinant FSH ... [more ▼]

We describe a 7-d culture in droplets of collagen gel of isolated small bovine preantral follicles in medium with or without 10% fetal bovine serum (FBS). In addition, the effect of human recombinant FSH and 17beta-estradiol on the morphology and growth of the preantral follicles was investigated in medium without FBS. After culture in medium with 10% FBS, the increase in follicle diameter was 13.1 +/- 8.4 microm, the percentage of BrdU-labeled cells was 49.9 +/- 11.3 and the number of cells per area granulosa was 11.1 +/- 1.8. Omission of serum from the culture medium had no effect on the percentage of labeled cells, but the diameter increase was lower and the cells were smaller. Apparently, serum affects the size of the granulosa cells from small preantral follicles rather than the stimulation of cell proliferation. Addition of human recombinant FSH and/or 17beta-estradiol to serum-free medium resulted in a larger diameter increase during culture compared with that of the control. With FSH, this was due to an increase in cell proliferation, while with estradiol this was caused by an increase in granulosa cell size. The effects of simultaneous treatment with FSH and estradiol was simply the combination of their individual effects. In conclusion, small bovine preantral follicles can be cultured for 7 d in the absence of serum and hormones. The follicles increase in diameter and react to FSH with enhanced cell proliferation and to estradiol with an increase in cell size. [less ▲]

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See detailEffects of fibrates on cardiovascular outcomes.
Delanaye, Pierre ULiege; Scheen, André ULiege

in Lancet (2010), 376(9746), 1051

Detailed reference viewed: 38 (1 ULiège)
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See detailEffects of fish predation on Posidonia oceanica amphipod assemblages
Sturaro, Nicolas ULiege; Gobert, Sylvie ULiege; Pérez-Perera, Amanda et al

in Marine Biology (2016), 163

Amphipod assemblages that inhabit Posidonia oceanica seagrass meadows are potentially relevant trophic resources for ichthyofauna. However, the effects of fish predation on amphipod assemblages in this ... [more ▼]

Amphipod assemblages that inhabit Posidonia oceanica seagrass meadows are potentially relevant trophic resources for ichthyofauna. However, the effects of fish predation on amphipod assemblages in this system have received little attention. To address this gap in knowledge, experimental manipulations of predation intensity (exclusion and inclusion cages) were conducted at two sites in a Mediterranean marine protected area, where different levels of fish predation were expected to occur. We found that in the absence of predatory fishes (exclusion cages), total amphipod density and biomass were higher than in uncaged areas and partially controlled cages. At the species level, Caprella acanthifera and Iphimedia minuta responded to caging with increased abundance, while in most cases different species did not exhibit differences in density or biomass between treatments. The presence of one enclosed labrid fish predator (inclusion cages) resulted in a lower density and biomass of Aora spinicornis and a lower biomass of Phtisica marina, although total amphipod density and biomass were unchanged. In the inclusion cages, a size-frequency analysis revealed that predators mainly targeted large A. spinicornis and Apherusa chiereghinii individuals. Our results suggest that predation by fish may be an important factor in controlling amphipod abundances and biomasses in P. oceanica meadows. Overall, amphipod community composition was not affected by exclusion or inclusion of fish predators. However, some significant effects at the species level point to more complex interactions between some amphipods and fish. [less ▲]

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See detailEffects of fish size on agonistic sounds in the clownfish Amphiprion akallopisos : implications for the role of the swimbladder in the sound production mechanism?
Colleye, Orphal ULiege; Vandewalle, Pierre ULiege; Frederich, Bruno ULiege et al

Conference (2008)

Clownfishes (i.e. Amphiprion akallopisos) are territorial fishes that use sound production to defend their anemone territory. They live in social groups which display a size-based dominance hierarchy. In ... [more ▼]

Clownfishes (i.e. Amphiprion akallopisos) are territorial fishes that use sound production to defend their anemone territory. They live in social groups which display a size-based dominance hierarchy. In such a system, agonistic interactions are frequent and play an important role in the social organization. In addition, these interactions are often associated with sounds. In this study, we compared the sonic features between individuals of different sizes and in different sexual status (juvenile, male and female). The existent relationship between fish size and swimbladder size also implied to seek the swimbladder role in the sound production. Sound analyses showed that juveniles, males and females had distinct sounds in the dominant frequency and pulse duration. These differences were however not in relation to the sexual state; influence of sex on sonic features being mainly the result of a size dimorphism between sexes. Differences in calls were therefore due to the respective size of the emitter. This observation highlighted the role of the swimbladder as a resonance chamber. This role was also reinforced because the experimental filling of the swimbladder with physiological liquid significantly modified the acoustic features. In A. akallopisos, frequency and pulse duration are directly related to swimbladder size, and thus to fish size. This relationship provides strong evidence that the emitter could be identified by its calls. [less ▲]

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See detailThe effects of flowering on root development in Arabidopsis
Mathieu, Laura ULiege; Lobet, Guillaume ULiege; Périlleux, Claire ULiege

Poster (2013, July 05)

Flowering in Arabidopsis thaliana is controlled by photoperiod. In long days, the mobile proteins FLOWERING LOCUS T (FT) and TWIN SISTER OF FT (TSF) are produced in the leaves and transported in the ... [more ▼]

Flowering in Arabidopsis thaliana is controlled by photoperiod. In long days, the mobile proteins FLOWERING LOCUS T (FT) and TWIN SISTER OF FT (TSF) are produced in the leaves and transported in the phloem toward the shoot apical meristem (SAM). In the SAM, FT and TSF interact with the transcription factor FD to activate the expression of genes responsible for floral meristem identity [1]. Since the formation of flowers and fruits is a costly and critical stage for the plant, it is expected to be supported by a well developed root system to insure the increase in plant’s needs. As a first step to understand the effects of flowering on root growth, we compared root development in long days, promoting flowering, and in short days (16h and 8h days, respectively). [less ▲]

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See detailThe effects of flowering signals on root architecture in Arabidopsis
Mathieu, Laura ULiege; Lobet, Guillaume ULiege; Périlleux, Claire ULiege

Poster (2014, May 15)

Roots are responsible for water and nutrient uptake and hence are critical to sustain the whole plant life cycle. This study aims at characterizing how root development is affected by flowering. We ... [more ▼]

Roots are responsible for water and nutrient uptake and hence are critical to sustain the whole plant life cycle. This study aims at characterizing how root development is affected by flowering. We therefore focused on the effects of systemic signals produced in the leaves at floral transition, namely the proteins FLOWERING LOCUS T (FT) and TWIN SISTER OF FT (TSF), on root growth and branching. These proteins act in the shoot apical meristem as potent promoters of flowering [1] but their effects in other parts of the plant are still unknown. [less ▲]

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See detailEffects of fluid preservation on sea star stable isotope compositions: How useful can museum collections be for trophic ecology studies?
Le Bourg, Baptiste ULiege; Lepoint, Gilles ULiege; Michel, Loïc

Poster (2017, November 23)

Stable isotope analyses (SIA) of carbon (δ13C) and nitrogen (δ15N) are a common tool to investigate the trophic ecology of animals. After field sampling, animal tissues are usually preserved dried or ... [more ▼]

Stable isotope analyses (SIA) of carbon (δ13C) and nitrogen (δ15N) are a common tool to investigate the trophic ecology of animals. After field sampling, animal tissues are usually preserved dried or frozen before subsequent analysis. However, museum samples, or samples not initially collected for SIA are often fixed in preservative solutions. These preservation methods may alter stable isotope ratios in animal tissues, and those effects should be quantified. Here, we investigated long-term effects (one year) of four preservation methods (freezing, alcohol, formaldehyde, drying) on δ13C and δ15N values of sea stars. We show that only formaldehyde preservation significantly affects δ13C values. However, after being altered, the mean δ13C value remained stable over time, suggesting that a correction factor may be used regardless of preservation time. δ15N values change across time for all methods except freezing but this may be the result of a higher intra-individual variability of δ15N values. The influence of preservation methods on estimation of isotopic niches size (parameterised as standard ellipse area) was also investigated. Bayesian estimations of standard ellipse areas (SEAB) of preserved samples were not different from those of fresh samples except for the samples preserved 6 months in alcohol. These preliminary results suggest that samples stored during one year in preservative fluids may be used for SIA in order to investigate the trophic ecology of sea stars. Future results will also help to determine whether the findings can be generalised to sea stars preserved for a longer time, such as those in museum collections. [less ▲]

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See detailEffects of formoterol and ipratropium bromide on repeated cadmium inhalation -induced pulmonary inflammation and emphysema in rats
Zhang, Whenhui; Fievez, Laurence ULiege; Zhang, F. et al

in European Journal of Pharmacology (2010), 25(647), 178-187

Detailed reference viewed: 71 (10 ULiège)
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See detailEffects of formoterol on repeated cadmium inhalation-induced lung inflammation and emphysema in rats
Zhang, W.; Fievez, Laurence ULiege; Cheu, Esteban ULiege et al

in Proceedings : Congrès de physiologie, de pharmacologie et de thérapeutique P2T (2007)

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See detailEffects of formoterol,ipratropium and their combination on repeated cadmium inhalation-induced lung inflammation and airspace enlargement
Zhang, W. H.; Fievez, Laurence ULiege; Cheu, Esteban ULiege et al

in Fundamental & Clinical Pharmacology (2010), 10

Detailed reference viewed: 52 (15 ULiège)
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See detailThe effects of forodesine in murine and human multiple myeloma cells
Bieghs, Liesbeth; Caers, Jo ULiege; De Bruyne, Elke et al

in Advances in Hematology (2010)

Detailed reference viewed: 22 (4 ULiège)
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See detailEffects of fruit maturity on oxidative stability of Lagenaria siceraria (Molina) standl. seed oil extracted with hexane
Loukou, A.L.; Lognay, Georges ULiege; Baudoin, Jean-Pierre ULiege et al

in Journal of Food Biochemistry (2013), 37(4), 475-484

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See detailEffects Of Fungicide Treatment, N-Fertilisation And Harvest Date On Arabinoxylan, Endoxylanase Activity And Endoxylanase Inhibitor Levels In Wheat Kernels
Dornez, Emmie; Gebruers, Kurt; Joye, Iris J. et al

in Journal of Cereal Science (2008), 47(2), 190-200

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See detailEffects Of Galanin Infusion On Gh Secretion And Ghrh-Induced Gh Release In Prepubertal Male Lambs
Saleri, R.; Baratta, M.; Renaville, Robert ULiege et al

in Small Ruminant Research (1999), 33(3),

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See detailEffects of gastrointestinal helminth infections and plane of nutrition on the health and productivity of F1 (West African Dwarf x Sahelian) goat crosses in The Gambia
Faye, D.; Leak, S.; Nouala, S. et al

in Small Ruminant Research (2003), 50(1-2), 153-161

A two by two factorial design including natural helminth infections (dewormed 'D' or not dewormed 'ND') and different levels of diet (basal 'B' or basal diet plus supplement 'S') was used to assess the ... [more ▼]

A two by two factorial design including natural helminth infections (dewormed 'D' or not dewormed 'ND') and different levels of diet (basal 'B' or basal diet plus supplement 'S') was used to assess the effect of helminth infections and plane of nutrition on health and productivity of F1 (West African Dwarf (WAD) x Sahelian) crosses. The pasture composed the basal diet and supplemented animals received cottonseed and rice bran. Feed composition analysis revealed that the pasture did not provide sufficient nutrients for reproduction requirements. Feed supplementation had a significant effect on weight gain of does during pregnancy and lactation, and milk off-take was significantly higher in supplemented does compared to non-supplemented ones (31.3 +/- 2.5 1 versus 17.7 +/- 2.5 1 respectively, P < 0.01). A peri-parturient rise in strongyle egg output was noted, and diet supplementation tended to reduce faecal egg count and to increase packed cell volume (PCV), mainly during the dry season. Deworming had a significant effect on red blood cell (RBC) count, PCV and haemoglobin (Hb) concentration, mainly during the period of peak strongyle egg output (season x deworming: P < 0.001 for RBC and PCV and P < 0.05 for Hb). Helminth infections combined with a basal diet seriously affected weight gain but the interaction of deworming and diet was not significant. In groups receiving the basal diet, dewormed animals had a significantly higher milk yield than those that were not dewormed (23.5 +/- 3.31 versus 12.0 +/- 3.71, respectively; interaction diet x deworming: P < 0.05). The higher daily weight gains of offspring born from dewormed does might be explained by the fact that, in addition to the effect of deworming on milk yield in animals receiving basal diet, the kids were less exposed to helminth eggs, whereas does that were not dewormed constituted a greater source of helminth infection for their kids. (C) 2003 Elsevier Science B.V. All rights reserved. [less ▲]

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See detailEffects of gastroplasty on body weight and related biological abnormalities in morbid obesity.
Luyckx, Françoise ULiege; Scheen, André ULiege; Desaive, Claude ULiege et al

in Diabètes & Métabolism (1998), 24(4), 355-61

Obesity is a prevalent metabolic disorder associated with high morbidity and mortality rates. Medical treatment rarely succeeds, and bariatric surgery has been proposed as an alternative therapy. The ... [more ▼]

Obesity is a prevalent metabolic disorder associated with high morbidity and mortality rates. Medical treatment rarely succeeds, and bariatric surgery has been proposed as an alternative therapy. The purpose of this non-controlled retrospective study was to evaluate time-course changes in body weight in severely obese patients who underwent vertical ring gastroplasty or adjustable silicone gastric banding, and to assess the prevalence and potential reversibility of several of the biological abnormalities associated with morbid obesity. From an initial cohort comprising 658 patients, regular body weight measurements and biological data were obtained in 505 patients [419 females, 86 males; age 36 +/- 11 years; body mass index 42.7 +/- 6.9 kg/m2; (mean +/- SD)] with a mean follow-up of 26 +/- 14 months. Mean weight loss was 32 +/- 16 kg. Most weight reduction occurred within the first 6 months, followed by near-stabilisation or even slight weight regain. Most biological parameters were obtained before surgery and after at least 6 months of follow-up. The high prevalence and severity of metabolic disturbances associated with the insulin resistance syndrome (hyperglycaemia, hyperinsulinaemia, decreased HDL cholesterol, hypertriglyceridaemia, elevated fibrinogen levels and hyperuricaemia) before gastroplasty were significantly decreased after weight loss. No major biological deficiencies were observed following gastroplasty, except low iron serum levels. It is concluded that marked weight loss associated with gastroplasty involved a remarkable reduction in the prevalence and severity of several biological abnormalities classically considered as cardiovascular risk factors. [less ▲]

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See detailEffects of genotype and nutrition on growth performance,carcass characteristics, and meat properties of goats in Laos
Nguyen Xuan, Trach; Phiovankham, Bounmy; Do Duc, Luc ULiege

in Journal of Southern Agriculture (2011), 42(7), 786-790

【Objective】A 2×2 factorial trial was carried out to determine effects of genotype and nutrition on improved growth performance, carcass characteristics, and meat properties of goats in Laos. 【Method】The ... [more ▼]

【Objective】A 2×2 factorial trial was carried out to determine effects of genotype and nutrition on improved growth performance, carcass characteristics, and meat properties of goats in Laos. 【Method】The indigenous goat breed (Lat) was used as the control in comparison with F1 (BT×L) as a result of crossbreeding Lat does with Bach Thao bucks imported from Vietnam. For each genotype, 30 growing male goats at age of 7 months were chosen and equally divided into 2 groups, one was raised according to the traditional feeding regime (free ranging only) and the other with an improved feeding regime including cassava hay and mineral block provided ad libitum in addition to free ranging. The animals were observed for the average daily gain (ADG) and at the end, three animals per group were slaughtered to determine carcass characteristics (physical composition, primal cuts), and meat properties (shear force, color, pH, drip loss, and cooking loss). 【Result】The results showed that the ADG of F1(60.02 g/head/day) was very much higher (56.09%) than that of the indigenous goat (38.45 g/head/day). The ADG of goats supplemented with cassava hay and mineral block (55.45g/head/day)was also significantly higher (28.89%) than that of those not supplemented (43.02 g/head/day). No significant (P >0.05)effects of the crossbreeding and supplementation were found for dressing percentage and percentages of shoulder-foreleg, rump-rearleg, and breast-rip cuts in the carcass; however, the F1 had a bigger neck (P<0.01) but a smaller loin-abdomen cut (P<0.01) compared with the indigenous goat. No significant differences were observed for the parameters of meat characteristics between Lat and F1 goats under the two different feeding regimes. 【Conclusion】It was therefore concluded that crossbreeding with Bach Thao bucks and supplementation of cassava hay and mineral block improved meat yield without negative effects on meat quality of goats in Laos. [less ▲]

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See detailEffects Of Genotype, Harvest Year And Genotype-By-Harvest Year Interactions On Arabinoxylan, Endoxylanase Activity And Endoxylanase Inhibitor Levels In Wheat Kernels
Dornez, Emmie; Gebruers, Kurt; Joye, Iris J. et al

in Journal of Cereal Science (2008), 47(2), 180-189

Detailed reference viewed: 17 (0 ULiège)