title: Effect of beta-carotene and vitamin A on progesterone production by bovine luteal cells.
abstract: The relationship between concentrations of plasma vitamin A and c-carotene and corpora lutea was studied using 52 Holstein cows. Bovine luteinizing hormone was added to incubation tubes in doses of 0, 10, or 100 ng/ml. Regression of progesterone secretion by luteal cells in vitro on plasma beta-carotene was positive and significant for corpora lutea collected during the winter months when plasma beta-carotene was low. The two were unrelated during the summer months when beta-carotene was higher. Similar regressions for in vitro progesterone production and vitamin A were not significant in either season. These results suggest that in vivo beta-carotene status is related to bovine luteal function in vitro.
authors.affiliation: Department of Animal Science, University of Connecticut, Storrs 06268.
authors.forename: R L
authors.initials: RL
authors.lastname: Graves-Hoagland
authors.forename: T A
authors.initials: TA
authors.lastname: Hoagland
authors.forename: C O
authors.initials: CO
authors.lastname: Woody
mesh_terms: D000818:Animals; D002338:Carotenoids / Q000494:pharmacology*; D002417:Cattle / Q000378:metabolism*; D003338:Corpus Luteum / Q000187:drug effects*; D005260:Female; D066298:In Vitro Techniques; D008184:Luteal Cells / Q000187:drug effects* / Q000378:metabolism; D011374:Progesterone / Q000096:biosynthesis*; D014801:Vitamin A / Q000494:pharmacology*; D019207:beta Carotene
chemical_list: D019207:beta Carotene; D014801:Vitamin A; D002338:Carotenoids; D011374:Progesterone