Age-dependent changes in rat testicular LH/hCG receptors in relation to the membrane fluidity.
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چکیده
منابع مشابه
Pseudopregnancy-dependent changes in rat ovarian LH/hCG receptors in relation to membrane lipid fluidity.
The specific binding of [125I] hCG to ovarian membrane preparations as well as membrane fluidity have been investigated in immature rats during hormonally-induced pseudopregnancy. Membrane fluidity was monitored either by fluorescence polarization analysis of 1,6-diphenyl-1,3,5-hexatriene or by electron spin resonance of 16-, 12-, 5-doxyl stearic acid and CAT 16. A significant positive correlat...
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A method is described which makes use of 4M MgCl, to dissociate the testicular luteinizing hormone-receptor complex without altering either the binding capacity or binding affinity of the receptor. Using this method, it was demonstrated that in vitro incubation at 4" of decapsulated rat testes with various concentratznmuteinizing hormone or with human chorionic gonadotropin resulted in a reduct...
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Luteinizing hormone (LH) has been shown to be the only hormone essential for maintenance of testicular testosterone pr0duction.l LH mediates its effect on testicular steroidogenesis by binding to high affinity receptors in the plasma membrane of Leydig cells. In recent years, numerous investigators have reported that in vivo administration of LH or human chorionic gonadotropin (hCG) results in ...
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Porcine corpora lutea plasma membranes were treated with neutral lipids from hen egg yolk and a special mixture consisting of 70% neutral lipids, 20% phosphatidylcholine and 10% phosphatidylethanolamine. Membrane fluidity, as determined by fluorescence polarization of DPH, significantly increased already after 30 min of incubation of the membranes with lipids. The fluidization effect of neutral...
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ورودعنوان ژورنال:
- General physiology and biophysics
دوره 3 1 شماره
صفحات -
تاریخ انتشار 1984