Relationship between steroidogenesis and spermiation in Rana catesbeiana and Leptodactylus ocellatus

The present study employs an in vitro system to analyse the role of steroid hormones in hCG-induced spermiation in two species of anuran amphibian: Rana catesbeiana and Leptodactylus ocellatus. In vitro spermiation was induced with 10 IU hCG and the effect of different steroid-biosynthesis inhibitor...

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Autor principal: Rosemblit, C.
Otros Autores: Pozzi, A.G, Ceballos, N.R
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2006
Acceso en línea:Registro en Scopus
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024 7 |2 cas  |a androstanolone, 521-18-6; chorionic gonadotropin, 9002-61-3; progesterone, 57-83-0; testosterone, 58-22-0; 17,20-dihydroxy-4-pregnen-3-one, 10456-50-5; Androgens; Chorionic Gonadotropin; Dihydrotestosterone, 521-18-6; Hydroxyprogesterones; Progesterone, 57-83-0; Steroids; Testosterone, 58-22-0 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a JCPBD 
100 1 |a Rosemblit, C. 
245 1 0 |a Relationship between steroidogenesis and spermiation in Rana catesbeiana and Leptodactylus ocellatus 
260 |c 2006 
270 1 0 |m Ceballos, N.R.; Laboratorio de Endocrinología Comparada and PRHOM-CONICET, Departamento de Biodiversidad Y Biología Experimental, Pabellón 2, C1428EHA, Buenos Aires, Argentina; email: nceballo@bg.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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504 |a Yueh, W.S., Chang, C.F., 17α,20β,21-trihydroxy-4-pregnen-3-one and 17α,20β- dihydroxy-4-pregnen-3-one stimulated spermiation in protandrous black porgy, Acanthopagrus schlegeli (1997) Fish Physiol Biochem, 17, pp. 187-193 
520 3 |a The present study employs an in vitro system to analyse the role of steroid hormones in hCG-induced spermiation in two species of anuran amphibian: Rana catesbeiana and Leptodactylus ocellatus. In vitro spermiation was induced with 10 IU hCG and the effect of different steroid-biosynthesis inhibitors was analysed. Cyanoketone (10-5 M), an inhibitor of 3-oxo-4-ene steroid biosynthesis, did not block hCG-inducing activity even when biosynthesis of androgen was significantly reduced. These results clearly showed that, in both species, spermiation-inducing action of hCG does not depend on the biosynthesis of 3-oxo-4-ene steroids. Moreover, when combined inhibitors, aminoglutethimide (10-5 M) plus cyanoketone (10-5 M), were employed, spermiation evoked by hCG was not modified while hCG-induced androgen secretion significantly decreased. Additionally, none of the steroids used, progesterone, 17, 20α-dihydroxy-4-pregnen-3-one, testosterone and 5α- dihydrotestosterone, were able to induce spermiation in the absence of hCG, confirming that steroids are not involved in that process. In conclusion, as previously described in Bufo arenarum, in L. ocellatus and R. catesbeiana hCG-induced spermiation does not depend on steroid biosynthesis. © Springer-Verlag 2006.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: National Council for Scientific Research 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Acknowledgements This work was supported by grants from the University of Buenos Aires and the National Research Council of Argentina (CONICET) to its Programa de Regulación Hormonal y Metabólica (PRHOM). The experiments comply with the ‘‘Amphibians Guidelines for the breeding, care, and management of laboratory animals’’ published in 1996 by the National Institute of Health and also with the Argentine laws. 
593 |a Laboratorio de Endocrinología Comparada and PRHOM-CONICET, Departamento de Biodiversidad Y Biología Experimental, Pabellón 2, C1428EHA, Buenos Aires, Argentina 
690 1 0 |a AMPHIBIANS 
690 1 0 |a ANURA 
690 1 0 |a HCG 
690 1 0 |a SPERMIATION 
690 1 0 |a STEROIDS 
690 1 0 |a 17,20 DIHYDROXY 4 PREGNEN 3 ONE 
690 1 0 |a 17,20-DIHYDROXY-4-PREGNEN-3-ONE 
690 1 0 |a ANDROGEN 
690 1 0 |a ANDROSTANOLONE 
690 1 0 |a CHORIONIC GONADOTROPIN 
690 1 0 |a PROGESTERONE 
690 1 0 |a PROGESTERONE DERIVATIVE 
690 1 0 |a STEROID 
690 1 0 |a TESTOSTERONE 
690 1 0 |a ANIMAL 
690 1 0 |a ARTICLE 
690 1 0 |a BIOSYNTHESIS 
690 1 0 |a FROG 
690 1 0 |a FROGS AND TOADS 
690 1 0 |a HUMAN 
690 1 0 |a MALE 
690 1 0 |a PHYSIOLOGY 
690 1 0 |a SECRETION 
690 1 0 |a SPERMATOGENESIS 
690 1 0 |a ANDROGENS 
690 1 0 |a ANIMALS 
690 1 0 |a ANURA 
690 1 0 |a CHORIONIC GONADOTROPIN 
690 1 0 |a DIHYDROTESTOSTERONE 
690 1 0 |a HUMANS 
690 1 0 |a HYDROXYPROGESTERONES 
690 1 0 |a MALE 
690 1 0 |a PROGESTERONE 
690 1 0 |a RANA CATESBEIANA 
690 1 0 |a SPERMATOGENESIS 
690 1 0 |a STEROIDS 
690 1 0 |a TESTOSTERONE 
690 1 0 |a AMPHIBIA 
690 1 0 |a ANURA 
690 1 0 |a BUFO ARENARUM 
690 1 0 |a LEPTODACTYLUS OCELLATUS 
690 1 0 |a RANA CATESBEIANA 
700 1 |a Pozzi, A.G. 
700 1 |a Ceballos, N.R. 
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