Results 131 to 140 of about 7,496 (181)
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Cellular components involved in luteolysis
Journal of Animal Science, 1994In the domestic species, regression of the corpus luteum is dependent on uterine release of prostaglandin (PG)F2 alpha. Despite the central role of PGF2 alpha in luteolysis, very little is known about the actual mechanism of prostaglandin-induced regression at the level of the luteal cell.
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Induction of luteolysis in the mare with a prostaglandin analogue
Theriogenology, 1974Abstract Five mares were administered 0.5 to 2.0 mg of a prostaglandin analogue, RS 9390 (Syntex), during nine estrous cycles in February and March. Luteolysis as measured by peripheral plasma progesterone occurred in four cycles, transitory luteolysis following 0.5 mg RS 9390 in two cycles, while functional corpora lutea were not present in three ...
F N, Thompson, D M, Witherspoon
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Luteolysins and Mechanisms of Luteolysis
1987A fundamentally important event in reproduction is luteolysis because without a decrease in progesterone secretion, there can be no gonadotropin-dependent ovarian differentiation and cyclic function. Until the last two decades, virtually nothing was known of the mechanisms of luteolysis or of the agents that regulate such processes.
H. R. Behrman +5 more
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Luteolysis in Mares After Endometrial Biopsy
American Journal of Veterinary Research, 1981SUMMARY The length of diestrus was not changed in 4 mares by taking endometrial biopsy specimens during estrus. In contrast, taking endometrial biopsy specimens on postovulation day 4 induced premature luteolysis and significantly (P < 0.05) reduced the length of diestrus.
C B, Baker +3 more
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Cellular Mechanisms Involved in Luteolysis
1979Regression of the mammalian corpus luteum is commonly thought to involve autophagy (cellular self-digestion) or heterophagy (removal of cells by macrophages), or both. However, few studies have focused on these mechanisms, and their actual importance in luteolysis thus remains uncertain.
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Monocyte chemoattractant protein 1 in luteolysis
Reviews of Reproduction, 2000Monocyte chemoattractant protein 1 (MCP-1) is a member of the chemokine family of cytokines which are involved in leukocyte physiology and trafficking. Interest in the role of inflammatory cells and their cytokine products in luteolysis has been increasing and there is mounting evidence demonstrating that MCP-1 is involved in luteolysis.
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Luteolysis in the hamster: Abrogation by gonadotropin and prolactin pretreatment
Prostaglandins, 1981The luteolysis which terminated pseudopregnancy (PSP) in superovulated hamsters was studied. Spontaneous luteolysis occurred before 1100 on Day 7 of PSP and was characterized by a rapid decline in circulating progesterone levels. Luteolysis induced by prostaglandin F2 alpha (PGF2 alpha) on Day 5 of PSP displayed a similar rapid reduction in ...
K H, Harris, B D, Murphy
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A possible role for testosterone during luteolysis in the ewe
Research in Veterinary Science, 1988Increased peripheral plasma concentrations of testosterone were detected at the commencement of luteolysis and at oestrus in sheep. Daily subcutaneous administration of spironolactone (10 mg kg-1) between days 10 and 16 of the oestrous cycle suppressed testosterone secretion and delayed luteolysis and oestrus.
R G, Cooke, K M, Benhaj
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Prostaglandins and post-abortion luteolysis in early pregnancy
Prostaglandins, 1975This study was undertaken to determine if post-abortion luteolysis in early pregnancy could be accelerated by the administration of 15(S)15-methyl-PGF2alpha(15-me-PGF2alpha) or delayed following pretreatment with indomethacin. Thirty-nine women were divided into four groups: 7 women were given 400mug 15-me-PGF2alpha extra-amniotically one hour prior to
A, Leader +6 more
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Control of pregnancy, parturition and luteolysis in marsupials
Reproduction, Fertility and Development, 1990In most eutherian species the function of the corpus luteum (CL) is influenced by extrinsic factors and it is subordinate to the pituitary, placenta, or uterus. In contrast, in marsupials the CL is relatively autonomous. Although the pituitary is essential for the formation of the CL, thereafter the secretory activity of the CL is independent of ...
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