Zobrazeno 1 - 10
of 101
pro vyhledávání: '"E. Burzawa-Gerard"'
Autor:
François J. Meunier, Miskal Sbaihi, M. Fouchereau-Peron, E. Burzawa-Gerard, P. Elie, Sylvie Dufour, B. Vidal, Ian Mayer
Publikováno v:
Journal of Fish Biology. 59:302-318
The gonadosomatic indices (I G ) of female conger eel Conger conger, aged between 2 and 11 years postmetamorphosis, ranged between 0.04 and 4.78 and were correlated with both age and body length. Microscopical examination of the gonads showed immatur
Autor:
N. Le Belle, J. Marchelidon, Miskal Sbaihi, E. Burzawa-Gerard, A. Hardy, Sylvie Dufour, B. Vidal, Monika Schmitz
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 355, Pp 349-368 (1999)
L'argenture est une transformation complexe qui fait passer les anguilles de la phase de croissance juvenile, sedentaire (stade jaune) a la phase de migration d'avalaison (stade argente), etape initiale de la migration de reproduction oceanique. Cett
Publikováno v:
Fish Physiology and Biochemistry. 16:107-118
Changes in the levels of plasma vitellogenin (Vg), estradiol (E2) and testosterone (T) were examined following gonadal development induced by carp gonadotropin treatment (cGTH) of freshwater female yellow and silver eels (Anguilla anguilla L.). The a
Publikováno v:
General and Comparative Endocrinology. 102:263-273
Previous in vivo experiments have indicated a potentiating role of growth hormone (GH) during experimentally induced vitellogenesis by 17β-estradiol (E2) in the female silver eel ( Anguilla anguilla L.). To investigate whether GH has direct hepatic
Publikováno v:
General and Comparative Endocrinology. 91:318-329
Control and 17 beta-estradiol-primed eels were used to investigate the hormonal requirement of vitellogenesis in an immature fish, the eel. A primary culture of isolated liver cells from female silver eels was developed. The hepatocytes were maintain
Autor:
E. Burzawa-Gerard, A. Dumas-Vidal
Publikováno v:
General and Comparative Endocrinology. 84:264-276
The European silver eels are at the early stages of vitellogenesis before the marine reproductive migration. Vitellogenesis was induced by 17 beta-estradiol (E2) alone and by a purified carp gonadotropin (cGTH). We studied and compared their effects
Publikováno v:
Comparative biochemistry and physiology. Part A, Molecularintegrative physiology. 121(1)
Previous studies demonstrated that native and recombinant growth hormone from mammalian and fish species potentiate the estrogenic induction of vitellogenin synthesis by cultured eel hepatocytes. In the present study, the metabolic competence (respir
Autor:
Y.-S. Huang, E. Burzawa-Gerard, Sylvie Dufour, Karine Rousseau, N. Le Belle, J. Marchelidon, B. Vidal
Publikováno v:
The Journal of endocrinology. 159(1)
Insulin-like growth factor (IGF)-I has been suggested as a potential signal linking growth and puberty in mammals. Using the juvenile European eel as a model, we employed a long-term, serum-free primary culture of pituitary cells to study the direct
Publikováno v:
General and Comparative Endocrinology. 49:375-382
Four biologically active fractions of gonadotropic hormone (aci-GTH-A, -B, -C, -D) were isolated and purified from acetonized pituitaries of the starred sturgeon (Acipenser stellatus Pall.). Their separation was achieved by DEAE-cellulose chromatogra
Publikováno v:
General and Comparative Endocrinology. 27:296-304
Biochemical properties of the aci-GTH prepared by gel filtration and DEAE-C chromatography were studied. This material had a sedimentation coefficient of 2.4–2.8. In analytical electrophoresis acrylamide gel at pH 8.9 it gave two main bands, a and