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Tesone, M.; Charreau, E.H. "Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata" (1980) Comparative Biochemistry and Physiology -- Part B: Biochemistry and. 65(4):631-637
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Abstract:

1. 1. A series of enzyme systems for steroid biosynthesis in the ovary and testis of Jenynsia lineata were demonstrated in vitro. In the ovary and testis of this teleost the following enzymic conversions of radiolabelled steroid substrates were observed in vitro: Pregnenolone → 17α-hydroxypregnenolone plus androstenedione and testosterone and Pregnenolone → 17α-hydroxyprogesterone plus androstenedione and testosterone. 2. 2. In addition, an unusual finding in the ovary and testes was the biosynthesis of 11-deoxycortisol (compound S) from the pregnenolone and progesterone substrates and the 21-hydroxylation of progesterone to form 11-deoxycorticosterone (DOC). 3. 3. The male gonad also exhibited 11β-hydroxylase activity and testosterone was converted to 11β-hydroxyandrostenedione. 4. 4. All conversions of radiolabelled substrates were identified on the basis of reverse isotope dilution and crystallization to constant specific activity. 5. 5. The physiological significance of DOC and 11β-hydroxyandrostenedione biosynthesis in the gonads of Jenynsia lineata and its possible role in the reproductive process are viewed against similar findings in other fishes. © 1980.

Registro:

Documento: Artículo
Título:Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata
Autor:Tesone, M.; Charreau, E.H.
Filiación:Instituto de Biología y Medicina Experimental, Laboratorio de Esteroides, Obligado 2490, Buenos Aires, 1428, Argentina
Departmento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Palabras clave:steroid; biosynthesis; endocrine system; female genital system; fish; gonad; male genital system
Año:1980
Volumen:65
Número:4
Página de inicio:631
Página de fin:637
DOI: http://dx.doi.org/10.1016/0305-0491(80)90171-6
Título revista:Comparative Biochemistry and Physiology -- Part B: Biochemistry and
ISSN:03050491
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03050491_v65_n4_p631_Tesone

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Citas:

---------- APA ----------
Tesone, M. & Charreau, E.H. (1980) . Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata. Comparative Biochemistry and Physiology -- Part B: Biochemistry and, 65(4), 631-637.
http://dx.doi.org/10.1016/0305-0491(80)90171-6
---------- CHICAGO ----------
Tesone, M., Charreau, E.H. "Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata" . Comparative Biochemistry and Physiology -- Part B: Biochemistry and 65, no. 4 (1980) : 631-637.
http://dx.doi.org/10.1016/0305-0491(80)90171-6
---------- MLA ----------
Tesone, M., Charreau, E.H. "Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata" . Comparative Biochemistry and Physiology -- Part B: Biochemistry and, vol. 65, no. 4, 1980, pp. 631-637.
http://dx.doi.org/10.1016/0305-0491(80)90171-6
---------- VANCOUVER ----------
Tesone, M., Charreau, E.H. Steroid biosynthesis in the gonads of the teleost fish Jenynsia lineata. 1980;65(4):631-637.
http://dx.doi.org/10.1016/0305-0491(80)90171-6