Changes of plasma concentrations of steroid hormones, prostaglandin F2 alpha-metabolite and pregnant mare serum gonadotropin during pregnancy in thoroughbred mares.
J Vet Med Sci
; 53(5): 797-801, 1991 Oct.
Article
em En
| MEDLINE
| ID: mdl-1836365
ABSTRACT
Plasma concentrations of estrogens, gestagens, cortisol (F), 13, 14-dihydro, 15-keto PGF2 alpha (PGFM) and pregnant mare serum gonadotropin (PMSG) in 10 Thoroughbred mares were measured for a 11-month pregnancy period. Estrone (E1) and estradiol-17 beta (E2) levels gradually increased as the pregnancy advanced, showing a peak around Month 8 and decreased thereafter. Progesterone (P) levels increased on Months 3 and 11, and 17 alpha-OH-progesterone (17 alpha-OHP) levels peaked on Month 3, whereas 20 alpha-OH-progesterone (20 alpha-OHP) levels increased sharply after Month 6. PGFM indicated peaks on Months 2 and 11. F and PMSG levels peaked on Months 2 and 3. From factor analysis, Month, E1, E2 and 20 alpha-OHP were discriminated as Factor 1, increasing with the progress of pregnancy, PMSG, 17 alpha-OHP and P as Factor 2, showing a relation with the secondary corpus luteum, and PGFM and F as Factor 3, affecting PGFM change on Month 2 by F. P also related to both Factors 1 and 3, showing an inverse relation against PGFM. In conclusion E1, E2 and 20 alpha-OHP contained in Factor 1 were suggested to be important especially as parameters of placental function after Month 6.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hormônios Esteroides Gonadais
/
Prenhez
/
Dinoprosta
/
Gonadotropinas Equinas
/
Cavalos
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
J Vet Med Sci
Assunto da revista:
MEDICINA VETERINARIA
Ano de publicação:
1991
Tipo de documento:
Article
País de afiliação:
Japão