The activities of hexokinase, citrate-cleavage enzyme, ;malic enzyme' and NADP-linked isocitrate dehydrogenase have been measured in the adipose tissue, testes and adrenals of normal rats, hypophysectomized rats and hypophysectomized rats treated with either thyroxine or thyroxine plus luteinizing hormone. Hypophysectomy reduced the activity of all four enzymes in all three tissues. Thyroxine a...

The ability of luteinizing hormone-releasing hormone (LHRH) neurons to express the oncogene c-fos was examined during the estrous cycle in rats. The immunocytochemical localization of the c-fos-encoded antigen, Fos, was coupled with the immunocytochemical localization of LHRH. LHRH neurons showed no Fos immunoreactivity during diestrus-1, diestrus-2, estrus, or the morning of proestrus. However...

Until recently, the study of hormonal influences in Alzheimer disease was limited to the role of sex steroids. Despite numerous epidemiological studies supporting a protective role for estrogen in Alzheimer disease, recent studies show that estrogen administration in elderly women increases the risk of disease. Reconciling these contradictory reports, we previously hypothesized that other hormo...

Background: Infertility is defined as the inability to conceive after one two years of unprotected intercourse. It types: primary infertility and secondary 5On basis etiopathology divided into five groups: unexplained (28%), male factor (24%), ovarian dysfunction (21%), tubal (14%) others (13%). Luteinizing hormone (LH) follicle-stimulating (FSH) are integral parts neural endocrine interchange ...

Polycystic Ovary Syndrome is a chronic endocrine disorder with clinical manifestations of oligomenorrhoea, amenorrhea, hirsuitism, ovarian dysfunction, and multiple cysts, affecting many women reproductive age. PCOS the primary cause ovulatory infertility worldwide. This study assessed concentration hormones in polycystic syndrome patients attending tertiary hospitals Niger Delta Region, Nigeri...

Mean plasma levels of prolactin (PRL), placental lactogen (OCS) and luteinizing hormone (LH) have been studied in pregnant ewes at different times of the year from approximately day 60 of gestation until parturition. Three groups were constituted and inseminated at different times: September, group I; November, group II; March, group III. Blood samples were collected on two consecutive days app...