Data/hora: 24/06/2024 00:55:02

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	01/08/1992	
Data da última atualização: 	31/05/2023	
Autoria: 	PEXTON, J. E.; FORD, S. P.; WILSON JUNIOR, L.; BUTCHER, R. L.; INSKEEP, E. K.	
Título: 	Prostaglandins F in uterine tissue and venous plasma of ewes with intrauterine devices.	
Ano de publicação: 	1975	
Fonte/Imprenta: 	Journal of Animal Science, v. 41, n. 1, p. 144-153, 1975.	
DOI: 	https://doi.org/10.2527/jas1975.411144x	
Idioma: 	Inglês	
Conteúdo: 	Levels of prostaglandins F (PGF) in uterine tissues and in uterine and peripheral plasma from ewes with and without IUD's were examined. Mature ewes were laparotomized on day 2 of the estrous cycle. Fifteen ewes with a corpus luteum on only one ovary were assigned at random to either a treated group (10 ewes) which received an intrauterine device (IUD) in each uterine horn or to a control group (five ewes). Twelve ewes had a corpus luteum on each ovary and received at random an IUD in one uterine horn (eight ewes) or a sham operation (four ewes). Blood was collected from a major vein of each uterine horn on day 5. Uteri were removed and the uterine horns were separated and dissected into caruncular and intercaruncular endometrium and myometrium. Prostaglandins F were extracted with ethyl acetate, separated by column chromatography on silicic acid and quantified by radioimmunoassay. An IUD in one or in both uterine horns resulted in higher concentrations (ng/ml) of PGF in uterine venous plasma from both horns (6.4 + 2.2 to 9.3 + 2.7) than in controls (.5 + .1 to .6 -+ .2). PGF (ng/g) in uterine tissue from ewes which had an IUD in each uterine horn was considerably higher in caruncular (382 + 42), intercaruncular (641 -+ 95) and myometrial tissue (82 + 9) than in controls (199 + 49, 240 -+ 72 and 50 -+ 11 in caruncular and intercaruncular endometrium and myometrium, respectively). In bilaterally-ovulating ewes with an IUD in one uterine horn, caruncular endometrium from those horns consistently contained more PGF (293 + 23 ng/g) than caruncular endometrium from uterine horns not containing an IUD (149 + 21) or from control ewes (130 + 24). The concentration of PGF in jugular plasma from IUD-bearing ewes (.4 + .1) was not different from that measured in plasma from control ewes (.4 + .1).	
Thesagro: 	Endocrinologia; Fisiologia; Ovino; Prostaglandina; Reprodução; Útero.	
Thesaurus Nal: 	Animal physiology; Animal reproduction; Corpus luteum; Metabolism; Ovulation; Pregnancy; Progesterone; Prostaglandins; Sheep; Uterus.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
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