ISSN:
0263-6484
Schlagwort(e):
Hormones
;
gonadotropins
;
Leydig cells
;
perfusion
;
steroid hydroxylase
;
steroid oxidoreductase
;
testis
;
testosterone
;
Chemistry
;
Biochemistry and Biotechnology
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Biologie
,
Medizin
Notizen:
Production of testosterone by highly purified Leydig cells prepared from rat and mouse testes is compared. Testosterone formation is improved to a higher degree in rat (2.7-fold) than in mouse (1.7-fold) cells by callagenase treatment of the testis compared with mechanical isolation. Mouse Leydig cells respond to exogenous stimuli (chorigonadotropin, dibutyryl cyclic AMP) with 2.4-fold higher testosterone secretion than rat cells. A 1.7-fold increased conversion of androgen precursors to testosterone by mouse compared with rat Leydig cells is demonstrated in static incubations as well as in steady-state superfusion experiments and can be derived from enhanced androstenedione reduction and a less inhibitory effect of progesterone on this process is mouse Leydig cells.
Zusätzliches Material:
5 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cbf.290020109
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