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A protective role of resveratrol against the effects of immobilization stress in corpora lutea of mice in early pregnancy

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Journal of Integrative Agriculture 2020年第7期19卷 1857-1866页

作者： Saif ULLAH Sheeraz MUSTAFA Wael ENNAB Muhammad JAN Muhammad SHAFIQ Ngekure MXKAVITA LU Zeng-peng MAO Da-gan SHI Fang-xiong College of Animal Science and Technology Nanjing Agricultural UniversityNanjing 210095P.R.China

In the present study,we aimed to investigate a protective role for resveratrol against the effects of immobilization stress on corpora lutea(CL)of mice in early pregnancy.A total of 45 early-pregnant mice were divided into no immobilization stress(NIS)group,immobilization stress(IS)group,and immobilization and resveratrol treatment(IS+RES)group(n=15).Mice were immobilized in plastic tubes(50 mL)for 3 h per day during day 1 to 7 of *** the IS+RES group,5 mg kg-'d-1 of resveratrol was administered just prior to application of *** analyzed apoptotic activity in CL by Western botting analysis(WB),transmission electron microscopy(TEM),and immunohistochemistry(IHC).Serum progesterone levels were examined with radioimmunoassay(RIA).IHC results showed that the intensity of positive staining for Bax was increased,and for BcI-2 was decreased in CL after IS,while resveratrol treatment reversed the positive staining for Bax and *** revealed that immobilization stress up-regulated the expression of Bax and caspase-9,and down-regulated Bcl-2 expression,while resveratrol treatment attenuated the effects of immobilization stress on the expression of Bax,Bcl-2 and *** to our TEM results,apoptosis as defined by chromatin condensation was found in CL after immobilization stress,while resveratrol inhibited the *** also demonstrated that immobilization stress decreased progesterone concentrations and ovarian expression of StAR,while resveratrol restored the concentrations of progesterone and expression of StAR back to *** results indicated that immobilization stress induced luteal regression while resveratrol inhibited luteal regression,suggesting that resveratrol plays a protective role on corpora lutea of mice during early pregnancy.

关键词： immobilization stress apoptosis corpora lutea resveratrol pregnant mice

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SOME FACTORS AFFECTING [3H]TYROSINE BINDING TO PLASMA MEMBRANE PREPARATION OF RAT corpora lutea in vitro

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Science China Chemistry 1988年第12期31卷 1467-1473页

作者：高而威程治平 Department oF Physiology Harbin Medical University Department oF Physiology

Temperature, pH, enzymes and ions affected the two types of [H]tyrosine binding sites differently. The optimal temperature and pH for the high affinity sites were 24 C and 7.4, and for the low affinity sites 37℃ and 7.0, respectively. The [H]tyrosine binding to the high and low affinity sites was not observed at 55℃, nor at pH 6.0 or pH 8.5. Trypsin reduced [H]tyrosine binding to the high affinity sites, but had no effect on the binding to the low affinity sites. Neuraminidase reduced [H]tyrosine binding to the low affinity sites, but had no effect on the binding to the high affinity sites. None of cycloheximide, kCG, cAMP, and progesterone affected [H]tyrosine binding.

关键词： tyrosine receptor binding sites corpora lutea progesterone.

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