The ontogeny of hypothalamic pituitary function in the pig. I. Pituitary LH and FSH in the fetus and neonate.
Pituitaries were collected from fetal and postnatal pigs from day 55 p.c. until 6 weeks after birth at closely spaced intervals. LH and FSH in individual pituitaries were quantified by both homologous RIA and homologous RRA. No significant difference was found between results obtained by RIA and RRA. Both LH and FSH are first detected by RIA and RRA in the porcine fetal pituitary at 75 days p.c. Thereafter both LH and FSH pituitary content rises until term. LH pituitary concentration in both male and female fetuses and FSH pituitary concentration in males exhibit a peak just before birth. FSH pituitary concentration in females rises until birth and thereafter remains elevated. A statistically significant sex difference was found postnatally with regard to FSH content and concentration but not for LH.
D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism; D005260:Female; D005333:Fetus / Q000378:metabolism; D005640:Follicle Stimulating Hormone / Q000096:biosynthesis*; D007986:Luteinizing Hormone / Q000096:biosynthesis*; D008297:Male; D010902:Pituitary Gland / Q000196:embryology* / Q000254:growth & development / Q000378:metabolism; D011247:Pregnancy; D011863:Radioimmunoassay; D011869:Radioligand Assay; D012737:Sex Factors; D013552:Swine / Q000196:embryology* / Q000254:growth & development
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone