Abstract:
:Follicle-stimulating hormone (FSH) stimulates aromatase activity of immature rat Sertoli cells cultured in vitro in the presence of an androgen substrate, a phenomenon that can be used to measure FSH bioactivity. This paper analyzes the effects of sera from various animal species on both aromatase activity and morphological aspects of cultured rat Sertoli cells. Treatment of Sertoli cells with increasing concentrations of serum from humans, monkeys, rats, hamsters, and mice gave a dose-dependent stimulation of estradiol production parallel to the response obtained with FSH standard. Serum from these species and from rabbits also had a characteristic morphological effect on the cells, to produce a fibroblast-like aspect and clumping. This effect was dose-dependent, was increased by the addition of FSH, and was eliminated by heating the sera at 56 degrees for 30 min prior to incubation with the cells. Clumping did not interfere with the aromatase activity of Sertoli cells and did not cause the cellular response to deviate from parallelism with the standard curve. Heat treatment of FSH standard and serum samples did not significantly change the aromatase activity. FSH bioactivity could be measured accurately in intact and castrated monkeys. It is concluded that the Sertoli cell aromatase bioassay can be applied directly to the measurement of serum bioactive FSH in several animal species without any preliminary treatment of the serum samples.
journal_name
Gen Comp Endocrinoljournal_title
General and comparative endocrinologyauthors
Simoni M,Schuhmann B,Weinbauer GFdoi
10.1006/gcen.1994.1106subject
Has Abstractpub_date
1994-07-01 00:00:00pages
99-108issue
1eissn
0016-6480issn
1095-6840pii
S0016-6480(84)71106-3journal_volume
95pub_type
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journal_title:General and comparative endocrinology
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1995-10-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1988-10-01 00:00:00
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journal_title:General and comparative endocrinology
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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journal_title:General and comparative endocrinology
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doi:10.1016/j.ygcen.2014.08.008
更新日期:2014-11-01 00:00:00
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journal_title:General and comparative endocrinology
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1995-11-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/0016-6480(84)90158-8
更新日期:1984-06-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/j.ygcen.2008.12.015
更新日期:2009-04-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章,评审
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更新日期:2011-05-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/j.ygcen.2010.10.009
更新日期:2011-01-15 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1993-11-01 00:00:00
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更新日期:2014-09-15 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1986-01-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:2006-09-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:2004-05-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1006/gcen.1994.1088
更新日期:1994-06-01 00:00:00
abstract::The effects of PGE1, PGE2, PGF2 alpha (2 micrograms/ml), and forskolin (10 microM) on follicle contraction of brook trout (salvelinus fontinalis) were studied by measuring the weight loss of punctured follicles during in vitro incubation. PGE1, PGE2, and forskolin significantly inhibited spontaneous contraction of fol...
journal_title:General and comparative endocrinology
pub_type: 杂志文章
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更新日期:1992-12-01 00:00:00
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journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/j.ygcen.2015.07.014
更新日期:2016-11-09 00:00:00
abstract::Effects of fasting on the growth hormone (GH)--growth hormone receptor (GHR)-insulin-like growth factor-I (IGF-I) axis were characterized in seawater-acclimated tilapia (Oreochromis mossambicus). Fasting for 4 weeks resulted in significant reductions in body weight and specific growth rate. Plasma GH and pituitary GH ...
journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/j.ygcen.2006.04.007
更新日期:2006-09-15 00:00:00
abstract::The rate-limiting and regulated step in steroidogenesis, the conversion of cholesterol to pregnenolone, is facilitated by the steroidogenic acute regulatory protein (StAR) and cytochrome P450 cholesterol side-chain cleavage (P450scc). We have isolated cDNAs encoding StAR and P450scc from the Atlantic stingray, Dasyati...
journal_title:General and comparative endocrinology
pub_type: 杂志文章
doi:10.1016/j.ygcen.2010.04.018
更新日期:2010-08-01 00:00:00