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侏儒仓鼠(Phodopus sungorus)卵巢中缺乏特异性促黄体生成激素释放激素(LHRH)受体。

Absence of specific luteinizing hormone-releasing hormone (LHRH) receptors in the ovaries of Djungarian hamsters (Phodopus sungorus).

作者信息

Theuring F, Ucer U, Hansmann I

出版信息

Biol Reprod. 1987 May;36(4):825-8. doi: 10.1095/biolreprod36.4.825.

DOI:10.1095/biolreprod36.4.825
PMID:3036261
Abstract

High affinity binding sites for luteinizing hormone-releasing hormone (LHRH) were characterized in Djungarian hamsters. Scatchard analysis was used to demonstrate specific LHRH-binding in hamster and, serving as controls, rat pituitaries (dissociation constant, KD = 0.6 nM, binding capacity, BM = 2.5 +/- 0.7 fmol/mg tissue; KD = 0.6 nM, BM = 6.9 +/- 1.9 fmol/mg tissue, respectively). In contrast to results obtained with rat ovaries (KD = 0.9 nM, BM = 3.0 +/- 0.9 fmol/mg tissue), no specific LHRH-binding was detected in hamster ovaries. Thus, it seems that direct gonadal action of LHRH in the Djungarian hamster is not involved in ovarian regulation.

摘要

在中仓鼠中对促黄体生成激素释放激素(LHRH)的高亲和力结合位点进行了表征。采用Scatchard分析来证明仓鼠垂体中存在特异性LHRH结合,并以大鼠垂体作为对照(解离常数KD = 0.6 nM,结合容量BM = 2.5±0.7 fmol/mg组织;KD = 0.6 nM,BM = 6.9±1.9 fmol/mg组织)。与大鼠卵巢的结果(KD = 0.9 nM,BM = 3.0±0.9 fmol/mg组织)相反,在中仓鼠卵巢中未检测到特异性LHRH结合。因此,LHRH在中仓鼠中的直接性腺作用似乎不参与卵巢调节。

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