Humic acid reduces gonadotropin activity and hormonal sensitivity of frog oocytes
Identifieur interne : 000227 ( PascalFrancis/Corpus ); précédent : 000226; suivant : 000228Humic acid reduces gonadotropin activity and hormonal sensitivity of frog oocytes
Auteurs : H. Zenkevics ; M. Klavins ; V. Vose ; A. BucenaSource :
- Aquatic toxicology [ 0166-445X ] ; 2005.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The specific stimulatory effect of sturgeon Acipenser güldenstädti Br. gonadotropic hormone (GTH) on frog Rana temporaria L. oocyte maturation in vitro was investigated in relation to humic acid (HA) concentrations from 12.5 to 50 mg/l. HA was observed to bind to both the follicular membrane of the oocytes and the GTH molecule, reducing the oocytes' hormone sensitivity and maturation ability. It was also shown that HA inactivated GTH, lowering its specific ability to stimulate oocyte maturation.
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Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 06-0042657 INIST |
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ET : | Humic acid reduces gonadotropin activity and hormonal sensitivity of frog oocytes |
AU : | ZENKEVICS (H.); KLAVINS (M.); VOSE (V.); BUCENA (A.) |
AF : | Institute of Biology, University of Latvia, Miera Street 3/2169, Salaspils/Lettonie (1 aut., 3 aut., 4 aut.); Department of Environmental Science, University of Latvia, Raina bh'd. 19/1586, Riga/Lettonie (2 aut.) |
DT : | Publication en série; Courte communication, note brève; Niveau analytique |
SO : | Aquatic toxicology; ISSN 0166-445X; Coden AQTODG; Pays-Bas; Da. 2005; Vol. 75; No. 4; Pp. 380-383; Bibl. 14 ref. |
LA : | Anglais |
EA : | The specific stimulatory effect of sturgeon Acipenser güldenstädti Br. gonadotropic hormone (GTH) on frog Rana temporaria L. oocyte maturation in vitro was investigated in relation to humic acid (HA) concentrations from 12.5 to 50 mg/l. HA was observed to bind to both the follicular membrane of the oocytes and the GTH molecule, reducing the oocytes' hormone sensitivity and maturation ability. It was also shown that HA inactivated GTH, lowering its specific ability to stimulate oocyte maturation. |
CC : | 002A14B02C2B; 002A15C |
FD : | Gonadotrophine; Ovocyte; Milieu aquatique; Ecotoxicologie; Acide humique; Salientia; Rana temporaria |
FG : | Amphibia; Vertebrata; Ranidae |
ED : | Gonadotropin; Oocyte; Aquatic environment; Ecotoxicology; Humic acid; Salientia; Rana temporaria |
EG : | Amphibia; Vertebrata; Ranidae |
SD : | Gonadotropina; Ovocito; Medio acuático; Ecotoxicología; Acido húmico; Salientia; Rana temporaria |
LO : | INIST-18841.354000135696040080 |
ID : | 06-0042657 |
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Pascal:06-0042657Le document en format XML
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<front><div type="abstract" xml:lang="en">The specific stimulatory effect of sturgeon Acipenser güldenstädti Br. gonadotropic hormone (GTH) on frog Rana temporaria L. oocyte maturation in vitro was investigated in relation to humic acid (HA) concentrations from 12.5 to 50 mg/l. HA was observed to bind to both the follicular membrane of the oocytes and the GTH molecule, reducing the oocytes' hormone sensitivity and maturation ability. It was also shown that HA inactivated GTH, lowering its specific ability to stimulate oocyte maturation.</div>
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<ET>Humic acid reduces gonadotropin activity and hormonal sensitivity of frog oocytes</ET>
<AU>ZENKEVICS (H.); KLAVINS (M.); VOSE (V.); BUCENA (A.)</AU>
<AF>Institute of Biology, University of Latvia, Miera Street 3/2169, Salaspils/Lettonie (1 aut., 3 aut., 4 aut.); Department of Environmental Science, University of Latvia, Raina bh'd. 19/1586, Riga/Lettonie (2 aut.)</AF>
<DT>Publication en série; Courte communication, note brève; Niveau analytique</DT>
<SO>Aquatic toxicology; ISSN 0166-445X; Coden AQTODG; Pays-Bas; Da. 2005; Vol. 75; No. 4; Pp. 380-383; Bibl. 14 ref.</SO>
<LA>Anglais</LA>
<EA>The specific stimulatory effect of sturgeon Acipenser güldenstädti Br. gonadotropic hormone (GTH) on frog Rana temporaria L. oocyte maturation in vitro was investigated in relation to humic acid (HA) concentrations from 12.5 to 50 mg/l. HA was observed to bind to both the follicular membrane of the oocytes and the GTH molecule, reducing the oocytes' hormone sensitivity and maturation ability. It was also shown that HA inactivated GTH, lowering its specific ability to stimulate oocyte maturation.</EA>
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