INSULIN-LIKE GROWTH-FACTOR-I AND GROWTH-FACTOR-II IN FOLLICULAR AND OOCYTE MATURATION

被引：2
|
作者：
FRANCHIMONT, P
HAZOUT, A
MENEZO, Y
COLETTE, J
机构：
[1] CLIN CHEREST,NEUILLY SUR SEINE,FRANCE
[2] INST RHONE ALPIN ETUDE REPROD HUMAINE,BRON,FRANCE
来源：
NUCLEAR MEDICINE AND BIOLOGY | 1994年 / 21卷 / 03期
关键词：
D O I：
10.1016/0969-8051(94)90074-4
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
Insulin-like growth factors I and II are synthesized from animal and human follicles. Their reproduction is FSH-, LH- and oestrogen-dependent. Growth hormone is also involved. IGF-I receptor numbers increase in the presence of FSH, while estradiol has a synergic effect. IGF-I and IGF-II stimulate growth of different follicular cell elements. TGF-alpha has the same activity but seems to be mediated by an increase in IGFs. Conversely, TGF beta and activin inhibit follicular growth accompanied by a reduction in IGFs. In contrast to TGF alpha, IGFs do not cause acquisition of meiotic competence. Injection of IGF-I into cultures of prepuberal splenic primary follicles reduced IGF-II production.
引用
收藏
页码：523 / 530
页数：8
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