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See detailEndocrinology of pregnancy in the cow: embryonic signals, placental hormones and proteins
Ayad, A.; Melo de Sousa, Noelita ULg; Hornick, Jean-Luc ULg et al

in Annales de Médecine Vétérinaire (2006), 150(4), 212-226

The development, the establishment and the embryonic survival at early stages of gestation are depending on an intimate dialogue between the embryo and his mother. For the embryo part, it is especially ... [more ▼]

The development, the establishment and the embryonic survival at early stages of gestation are depending on an intimate dialogue between the embryo and his mother. For the embryo part, it is especially the trophoblast, or the future placenta, which plays a key role in initializing pregnancy. The placenta emits many signals of various chemical natures ( steroids, prostaglandins, peptides, proteins), some of them, e. g. the interferon tau, determine the maintenance of the corpus luteum at the beginning of gestation. Until now, although having raised many speculations, the earliest of these signals were not identified in peripheral circulation. Consequently, they cannot be used as a pregnancy diagnosis or to indicate embryonic mortality. However, since the eighties, the specific proteins "associated with pregnancy", produced by the trophoblastic cells are used as tool for breeding management. Most of these molecules are present in peripheral circulation. In this review, we will describe the major mechanisms associated with the maternal recognition of the gestation and their possible applications as pregnancy diagnosis tool in the cow. [less ▲]

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See detailEndocrinology of pregnancy: chorionic somatomammotropins and pregnancy-associated glycoproteins: review
Beckers, Jean-François ULg; Zarrouk, Anissa; Batalha, Evie S et al

in Acta Veterinaria Hungarica (1998), 46(2), 175-189

The two main groups of placental proteins of ruminants are discussed in this paper: chorionic somatomammotropins (placental lactogens) and pregnancy-specific (-associated) proteins. Placental lactogens ... [more ▼]

The two main groups of placental proteins of ruminants are discussed in this paper: chorionic somatomammotropins (placental lactogens) and pregnancy-specific (-associated) proteins. Placental lactogens belong to the prolactin and growth hormone family. They stimulate mammogenesis, fetal growth and maternal metabolism. Pregnancy-specific proteins and pregnancy-associated glycoproteins belong to the aspartic proteinase family like pepsin, cathepsin D and E. These two groups of proteins are secretd in the maternal circulation by the binucleate cells after their migration to and fusion with the uterine cells. Theirs profiles were determined by radioimmunoassay (RIA). Further investigations are in progress to related secretory profiles with alterations of the trophoblastic function such as those occuring in embryonic mortality, abortion, and fetal distress. The endocrine function of the primate and equine palcenta is also discussed. [less ▲]

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See detailL'endoctrinement affectif du citoyen, La politique sous l'éclairage des sciences psychologiques: Préface
Hermans, Michel ULg

in Pleyers, Gordy (Ed.) L'endoctrinement affectif du citoyen, La politique sous l'éclairage des sciences psychologiques (2006)

Detailed reference viewed: 33 (3 ULg)
See detailEndodontie dans la pratique quotidienne: que faut il retenir du progrès?
MAINJOT, Amélie ULg

Scientific conference (2002, November)

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See detailEndodontie mécanisée
MAINJOT, Amélie ULg

Scientific conference (2004, October)

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See detailEndogenous Altruism, Redistribution, and Long Term Care
Pestieau, Pierre ULg; Cremer, Helmuth; Gahvari, Firouz

in B.E. Journal of Economic Analysis & Policy (2014), 14(2), 499-524

Detailed reference viewed: 32 (4 ULg)
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See detailEndogenous and Exogenous Neuronal Rhythmicity
Drion, Guillaume ULg

Conference (2013, June 25)

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See detailEndogenous auxin and cytokinin levels in shoots of a nonrooting tobacco mutant
Faivre-Rampant, O.; Kevers, Claire ULg; Gaspar, Th

in Bulletin de la Societe Royale des Sciences de Liege (1999), 68(5-6), 318

[No abstract available]

Detailed reference viewed: 29 (1 ULg)
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See detailEndogenous erythropoietin in the anemia of chronic disorders
Beguin, Yves ULg

in Weiss, W.; Gordeuk, V. R.; Hershko, C. (Eds.) Anemia of chronic disease (2005)

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See detailAn endogenous gibbon ape leukemia virus (GALV) identified in a rodent (Melomys sp.) from Indonesia
Alfano, niccolo; Michaux, Johan ULg; Fabre, Pierre-Henri et al

in Journal of Virology (2016)

Gibbon ape leukemia virus (GALV) and koala retrovirus (KoRV) most likely originated froma cross-species transmission of an ancestral retrovirus into koalas and gibbons via one or moreintermediate as yet ... [more ▼]

Gibbon ape leukemia virus (GALV) and koala retrovirus (KoRV) most likely originated froma cross-species transmission of an ancestral retrovirus into koalas and gibbons via one or moreintermediate as yet unknown hosts. A highly similar virus to GALV has been identified in anAustralian rodent (Melomys burtoni) after extensive screening of Australian wildlife. GALV-likeviruses have also been discovered in several Southeast Asian species although screening has not beenextensive and viruses discovered to date are only distantly related to GALV. We therefore screened 26Southeast Asian rodent species for KoRV- and GALV-like sequences, using hybridization capture andhigh-throughput sequencing, in the attempt to identify potential GALV and KoRV hosts. Only onespecies, an undescribed species of Melomys from Indonesia, was positive yielding an endogenousprovirus very closely related to a strain of GALV. The sequence of the critical receptor domain forGALV infection in the Indonesian Melomys sp. was consistent with the susceptibility of the species toGALV infection. The discovery of a GALV in a second Melomys species provides further evidencethat Melomys may play a role in the spread of GALV-like viruses, especially since the genus is foundin Indonesia, Papua New Guinea and Australia, connecting the home ranges of koalas and gibbons [less ▲]

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See detailAn endogenous gibbon ape leukemia virus (GALV) identified in a rodent (Melomys sp.) from Indonesia
Niccolo, Alfano; Michaux, Johan ULg; Fabre, pierre-Henri et al

in Journal of Virology (2016), sous presse

ABSTRACT Gibbon ape leukemia virus (GALV) and koala retrovirus (KoRV) most likely originated from a cross-species transmission of an ancestral retrovirus into koalas and gibbons via one or more ... [more ▼]

ABSTRACT Gibbon ape leukemia virus (GALV) and koala retrovirus (KoRV) most likely originated from a cross-species transmission of an ancestral retrovirus into koalas and gibbons via one or more intermediate as yet unknown hosts. A highly similar virus to GALV has been identified in an Australian rodent (Melomys burtoni) after extensive screening of Australian wildlife. GALV-like viruses have also been discovered in several Southeast Asian species although screening has not been extensive and viruses discovered to date are only distantly related to GALV. We therefore screened 26 Southeast Asian rodent species for KoRV- and GALV-like sequences, using hybridization capture and high-throughput sequencing, in the attempt to identify potential GALV and KoRV hosts. Only one species, an undescribed species of Melomys from Indonesia, was positive yielding an endogenous provirus very closely related to a strain of GALV. The sequence of the critical receptor domain for GALV infection in the Indonesian Melomys sp. was consistent with the susceptibility of the species to GALV infection. The discovery of a GALV in a second Melomys species provides further evidence that Melomys may play a role in the spread of GALV-like viruses, especially since the genus is found in Indonesia, Papua New Guinea and Australia, connecting the home ranges of koalas and gibbons. IMPORTANCE The gibbon ape leukemia virus (GALV) and the koala retrovirus (KoRV) are very closely related, yet their hosts are neither closely related nor overlap geographically. Direct cross-species infection between koalas and gibbons is unlikely. Therfore, GALV and KoRV may have arisen via a cross-species transfer from an intermediate host that overlaps in range with both gibbons and koalas. Using hybridization capture and high-throughput sequencing, we have screened a wide range of rodent candidate hosts from Southeast Asia for KoRV- and GALV-like sequences. Only a Melomys species from Indonesia was positive for GALV. We report the genome sequence of this newly identified GALV, the critical domain for infection of its potential cellular receptor and its phylogenetic relationships with the other previously characterized GALVs. We hypothesize that the genus Melomys may have played a key role in cross-species transmission to other taxa. [less ▲]

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See detailEndogenous Glutamate Involvement in Pulsatile Secretion of Gonadotropin-Releasing Hormone: Evidence from Effect of Glutamine and Developmental Changes
Bourguignon, Jean-Pierre ULg; Gerard, Arlette ULg; Alvarez Gonzalez, Maria-Luz ULg et al

in Endocrinology (1995), 136(3), 911-6

The secretion of GnRH can be stimulated by glutamate (GLU) and GLU agonists, whereas GLU receptor antagonists inhibit GnRH. Using 6-diazo-5-oxo-L-norleucine (DON), an inhibitor of glutaminase, we aimed to ... [more ▼]

The secretion of GnRH can be stimulated by glutamate (GLU) and GLU agonists, whereas GLU receptor antagonists inhibit GnRH. Using 6-diazo-5-oxo-L-norleucine (DON), an inhibitor of glutaminase, we aimed to study the involvement of endogenous GLU in GnRH secretion through the effects of impaired GLU biosynthesis from its precursor glutamine (GLN). GnRH secretion by hypothalamic explants of male rats, aged 15 and 50 days, was compared, because the frequency of spontaneous GnRH secretory pulses showed a 2-fold increase between those two ages. Using explants of 50-day-old rats, GLN elicited GnRH secretion in a similar dose-related manner as GLU. DON prevented GLN-evoked secretion of GnRH, whereas the effect of GLU was not altered. DON also markedly inhibited spontaneous pulsatile secretion of GnRH and the secretory response to veratridine, a Na+ channel opener. The inhibitory effect of DON on veratridine-evoked secretion of GnRH was directly related to the duration of exposure to DON and the frequency of GnRH secretory episodes. Using explants of 15-day-old rats, GLN could elicit GnRH release, although this response was lower than GLU-evoked secretion of GnRH. The DON concentrations required for inhibition of veratridine-evoked secretion of GnRH were lower at 15 days than at 50 days. These data indicate that 1) GLU biosynthesis from GLN is a prerequisite to the physiological mechanism of pulsatile GnRH secretion; and 2) inhibition of veratridine- or GLN-induced secretion of GnRH requires higher DON concentrations after the onset of puberty than before. This suggests that glutaminase, the enzyme controlling GLU biosynthesis from GLN, shows increased activity after the onset of puberty when the frequency of pulsatile GnRH secretion is increased as well. [less ▲]

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See detailEndogenous Growth and Regional Dynamics in an OLG Model with Land
Artige, Lionel ULg

Conference (2000, June)

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See detailEndogenous growth and regional dynamics in an OLG model with land
Artige, Lionel ULg

Conference (2001, November)

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See detailEndogenous Growth in an OLG Model with a Fixed Factor
Artige, Lionel ULg

E-print/Working paper (2010)

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See detailEndogenous mode of competition in general equilibrium
Tharakan, Joseph ULg

Conference (2006, November)

Detailed reference viewed: 13 (1 ULg)
See detailEndogenous mode of competition in general equilibrium
Tharakan, Joseph ULg

Conference (2010, December)

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See detailEndogenous mode of competition in general equilibrium
Tharakan, Joseph ULg

Conference (2007, May)

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See detailEndogenous mode of competition in general equilibrium
Tharakan, Joseph ULg

Conference (2009, March)

Detailed reference viewed: 3 (0 ULg)