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On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2015-11-16

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Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Jun-rong Li

http://orcid.org/0000-0001-7642-7981

Fang-xiong Shi

http://orcid.org/0000-0001-6271-6184

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Journal of Zhejiang University SCIENCE B 2015 Vol.16 No.12 P.980-990

http://doi.org/10.1631/jzus.B1500046


Induction of follicular luteinization by equine chorionic gonadotropin in cyclic guinea pigs


Author(s):  Jun-rong Li, Wei Wang, Fang-xiong Shi

Affiliation(s):  Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; more

Corresponding email(s):   fxshi@njau.edu.cn

Key Words:  Equine chorionic gonadotropin (eCG), Guinea Pig, Follicular development, Proliferating cell nuclear antigen (PCNA), Steroidogenic acute regulatory protein (StAR)


Jun-rong Li, Wei Wang, Fang-xiong Shi. Induction of follicular luteinization by equine chorionic gonadotropin in cyclic guinea pigs[J]. Journal of Zhejiang University Science B, 2015, 16(12): 980-990.

@article{title="Induction of follicular luteinization by equine chorionic gonadotropin in cyclic guinea pigs",
author="Jun-rong Li, Wei Wang, Fang-xiong Shi",
journal="Journal of Zhejiang University Science B",
volume="16",
number="12",
pages="980-990",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B1500046"
}

%0 Journal Article
%T Induction of follicular luteinization by equine chorionic gonadotropin in cyclic guinea pigs
%A Jun-rong Li
%A Wei Wang
%A Fang-xiong Shi
%J Journal of Zhejiang University SCIENCE B
%V 16
%N 12
%P 980-990
%@ 1673-1581
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1500046

TY - JOUR
T1 - Induction of follicular luteinization by equine chorionic gonadotropin in cyclic guinea pigs
A1 - Jun-rong Li
A1 - Wei Wang
A1 - Fang-xiong Shi
J0 - Journal of Zhejiang University Science B
VL - 16
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SP - 980
EP - 990
%@ 1673-1581
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B1500046


Abstract: 
The effects of equine chorionic gonadotropin (eCG) on follicular development and ovulation in cyclic guinea Pigs were investigated by histological and immunohistochemical analyses. Three groups of guinea Pigs (n=12) were administrated subcutaneously with saline, 20 or 50 IU of eCG, respectively, on cyclic Day 12 (Day 1=vaginal openings). Ovaries were collected at 4 and 8 d after administration (6 animals per group each time). The eCG administration induced significant and distinct morphological changes in the ovaries, as it promoted the luteinization of granulosa cells, but not follicular development. In addition, proliferating cell nuclear antigen (PCNA) and steroidogenic acute regulatory protein (StAR) were immunolocalized specifically in luteinized follicles. Our experiments together indicate that eCG administration can induce follicular luteinization but not superovulation in guinea Pigs. The eCG in cyclic guinea Pigs functions similar to that of luteinizing hormone (LH), but not follicle-stimulating hormone (FSH).

正常发情周期豚鼠经孕马血清促性腺激素诱导的卵泡黄体化研究

目的:研究孕马血清促性腺激素(eCG)对发情周期豚鼠卵巢卵泡的作用。
创新点:首次发现eCG对于发情周期豚鼠发挥了类似促黄体素的作用,而非促卵泡素的作用。
方法:将成年雌性豚鼠(400~700 g,连续2次以上观察到稳定的16天发情周期)分为对照组(腹腔注射生理盐水)和实验组(腹腔注射eCG)。实验组根据注射强度分为20 IU组和50 IU组,并分别于注射后4和8天采集豚鼠卵巢。用苏木精-伊红染色法(H&E)和免疫组化法观察豚鼠卵巢变化情况。测定注射后4天卵巢卵泡大小和数量,测定注射后8天卵巢和子宫重量、黄体数量、黄体化细胞数量和闭锁黄体细胞比例。
结论:本实验中,豚鼠经eCG注射后卵巢变化结果显示:发情期豚鼠卵巢经eCG注射发生明显的形态改变(图1),50 IU组豚鼠卵巢在注射后8天出现了黄体化未破裂卵泡(LUF)现象(图3)。免疫组化结果显示增值细胞核抗原(PCNA)和类激素调节蛋白(StAR)都免疫定位于黄体化卵泡(图8)。综上所述,eCG对于发情期豚鼠发挥了类似促黄体素的作用。

关键词:孕马血清促性腺激素;豚鼠;卵泡发育;增值细胞核抗原;类激素调节蛋白

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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