| Ovarian blood flow throughout the estrous cycle and early pregnancy in sows. | |
| | |
MedLine Citation:
|
PMID: 6871309 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The association between ovarian arterial blood flow (OBF), as measured with electromagnetic blood-flow transducers, and the concentrations of progesterone, estrone and estradiol-17 beta in systemic blood were determined throughout the estrous cycle and the first 21 days of pregnancy in four sows (first day of estrus or mating=Day 0). Changes in OBF were positively correlated (P less than 0.01) with the concentrations of progesterone in systemic blood throughout the estrous cycle (requal+0.63) and early pregnancy (requal+0.65) and negatively correlated (P less than 0.01) with estrone (r=-0.53) and estradiol-17 beta (r=-0.51) during the estrous cycle, but not (P greater than 0.10) during early pregnancy. In nonpregnant sows, OBF was lowest at estrus, highest during the luteal phase, and declined precipitously after Day 14 in association with declining concentrations of progesterone and increasing concentrations of estrogens in systemic blood. Patterns of OBF and progesterone during the subsequent pregnancy of each sow were similar to those observed during the estrous cycle until Day 12. Between Days 12 and 15 of pregnancy, blood flow to the ovary and progesterone in systemic blood exhibited transient rises of 26% (P less than 0.01) and 20% (P less than 0.05), respectively. Both an ovarian vasodilatory and luteotropic effect of the conceptuses was demonstrated on days critical for maintenance of the corpora lutea during early pregnancy in this species. |
| | |
Authors:
|
R R Magness; R K Christenson; S P Ford |
Related Documents
:
|
1478999 - Progesterone supplementation increases luteal phase endometrial thickness and oestradio... 401029 - Corpus luteum and fetoplacental functions in monkeys hypophysectomized during late preg... 21523849 - Management of cannabis use during pregnancy: an assessment of healthcare professionals'... 21372369 - A study on teenage pregnant mothers attending primary health centers of kempegowda inst... 21442629 - Monoamniotic twin pregnancy discordant for lethal open cranial defect: management dilem... 17422289 - Effects of prostaglandin f(2alpha) on corpora lutea formation and function in mated bit... 9646009 - Clinical pharmacokinetics of neuromuscular relaxants in pregnancy. 16445309 - A review of physical activity patterns in pregnant women and their relationship to psyc... 3985369 - The structure of the tupaia placenta. i. histology and vascularisation. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Biology of reproduction Volume: 28 ISSN: 0006-3363 ISO Abbreviation: Biol. Reprod. Publication Date: 1983 Jun |
Date Detail:
|
Created Date: 1983-09-23 Completed Date: 1983-09-23 Revised Date: 2003-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 0207224 Medline TA: Biol Reprod Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1090-6 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Estradiol / blood Estrone / blood Estrus* Female Ovary / blood supply* Pregnancy Pregnancy, Animal* Progesterone / blood Regional Blood Flow Swine |
| Chemical | |
Reg. No./Substance:
|
50-28-2/Estradiol; 53-16-7/Estrone; 57-83-0/Progesterone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effects of vasoactive intestinal polypeptide upon ovarian steroids, ovum transport and fertility in ...
Next Document: Effects of the embryo upon endometrial estrogen synthesis in the rabbit.