Corpus luteum maintenance during early pregnancy in the cow
نویسندگان
چکیده
منابع مشابه
Vascular changes in the corpus luteum during early pregnancy in the cow.
The present study determined vascular changes in the bovine corpus luteum (CL) at Day 16 (early maternal recognition period) and Day 40 in early pregnancy and compared them to the CL from Day 12 and Day 16 of the estrous cycle. The CLs were analyzed in the central and peripheral regions, where site-depending features of vessels and angiogenic factors are evident. The same protein level of the e...
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To investigate the possible role of the superoxide radical and its scavenging system in the human corpus luteum, superoxide dismutase (SOD) values and lipid peroxide concentrations were analysed in the corpora lutea during the menstrual cycle and in early pregnancy. Copper-zinc SOD (Cu,Zn-SOD) activities increased from the early to mid-luteal phase, and gradually decreased thereafter and were t...
متن کاملMaintenance or regression of the corpus luteum during multiple decisive periods of bovine pregnancy
In ruminants, there are specific times during the estrous cycle or pregnancy when the corpus luteum (CL) may undergo regression. This review has attempted to summarize the physiological and cellular mechanisms involved in CL regression or maintenance during four distinct periods. The first period is near day 7 when animals that are ovulating after a period of low circulating progesterone (P4), ...
متن کاملRuptured corpus luteum cyst in early pregnancy: a case report.
INTRODUCTION Transvaginal sonography and human chorionic gonadotropin (hCG) testing are cornerstones of modern clinical practice in cases with the suspected ectopic pregnancy. In unclear cases, if the level of hCG is above the discriminatory zones, the use of uterine curettage is recommended.There is an increasing concern that strict observation of the guidelines would potentially harm otherwis...
متن کاملEffect of rising hCG levels on the human corpus luteum during early pregnancy.
BACKGROUND During early pregnancy, the most important task of the corpus luteum (CL) is to produce sufficient progesterone until the luteoplacental shift occurs. Progesterone production is closely related to the extensive vasculature surrounding and supplying the CL. The synthesis of both progesterone and factors controlling the vasculature in the CL is regulated by hCG, which is released initi...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1980
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0590485