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Autor:
Eric Schmitt, Pierre F. Ray, Roland Abi Nahed, Emilie Le Blévec, Richard Le Boucher, Sabine Camugli, Jean-Pascal Hograindleur, Guillaume Martinez, Christophe Arnoult, Jessica Escoffier
Publikováno v:
Reproduction. 156:463-476
For artificial insemination (AI) to be successful, it is essential that sperm delivery be perfectly timed relative to ovulation, as sperm lifespan is limited due to oxidative metabolism induced by capacitation. Extending the window of sperm capacitat
Inhibition of luteolysis and embryo-uterine interactions during the peri-implantation period in pigs
Publikováno v:
Scopus-Elsevier
Inhibition of luteolysis and establishment of pregnancy in pigs results from oestrogen secretion by the conceptuses and requires progesterone produced by the corpus luteum (CL). An integral part of maternal recognition of pregnancy in the pig is the
Autor:
D. Schams
Publikováno v:
Bioscientifica Proceedings.
The variety of peptides synthesized by the corpus luteum (relaxin, vasopressin, oxytocin and oxytocin-related neurophysin) and their possible intracellular effects are reviewed. After luteinization of the granulosa cells and in response to LH and FSH
Autor:
Joy L. Pate
Publikováno v:
Bioscientifica Proceedings.
This review focuses on factors that may affect the sensitivity of the corpus luteum to uterine prostaglandin F2alpha (PGF2alpha) and embryonic signals. The heterogeneity of the types of cell that are present within the corpus luteum results in comple
Autor:
M. G. Hunter
Publikováno v:
Bioscientifica Proceedings.
An inadequate luteal phase occurs in domestic ruminants in several physiological situations (e.g. puberty, post partum), and also following the induction of ovulation in anoestrous ewes with GnRH treatment. The induced corpora lutea (CL) initially de
Publikováno v:
Reproduction. :93-99
The administration of prolactin to hypophysectomized rats results in regression of the corpora lutea, accompanied by immune-inflammatory events such as infiltration of monocytes and macrophages. Recent reports indicate an autocrine role for progester
Publikováno v:
Reproduction. 118:127-135
The effects of the male antifertility agent ornidazole on glycolysis as a prerequisite for fertilization were investigated in rats. Antifertility doses of ornidazole inhibited glycolysis within mature spermatozoa as determined from the lack of glucos
Publikováno v:
Reproduction. 116:315-320
Recent evidence indicates that, in mares, as in the domestic ruminants, oxytocin and its endometrial receptor play important roles in stimulating the pulsatile releases of prostaglandin F2 alpha from the endometrium that effect luteolysis. In the pre
Publikováno v:
Journal of Endocrinology. 157:405-414
The synthesis and secretion of progesterone in the corpus luteum are regulated by both endocrine and paracrine/ autocrine factors which affect the steroidogenic cells. Evidence suggests that these cells communicate via cell-cell junctional proteins,
Autor:
S M Feng, G W Almond
Publikováno v:
Reproduction. 113:83-89
The present study examined the effects of LH, prostaglandin E2 (PGE2), 8-bromo-cyclic AMP (cAMP) and forskolin on progesterone secretion by small and large pig luteal cells. Corpora lutea were isolated from gilts (n > or = 3 per day) on days 9, 12 an