Gonadotropin-releasing hormone stimulates the biosynthesis of pregnenolone sulfate and dehydroepiandrosterone sulfate in the hypothalamus.

Dehydroepiandrosterone Sulfate (DHEAS) Stimulates the First Step in the Biosynthesis of Steroid Hormones

Dehydroepiandrosterone sulfate (DHEAS) is the most abundant circulating steroid in human, with the highest concentrations between age 20 and 30, but displaying a significant decrease with age. Many beneficial functions are ascribed to DHEAS. Nevertheless, long-term studies are very scarce concerning the intake of DHEAS over several years, and molecular investigations on DHEAS action are missing...

ACTH Adrenocorticotropic hormone CRF/CRH Corticotrophin releasing factor/hormone DALY Disability-adjusted life years DHEA Dehydroepiandrosterone DHEAS Dehydroepiandrosterone sulfate DNA Deoxyribose nucleic acid FSH Follicle stimulating hormone GH Growth hormone GHRH Growth hormone releasing hormone GnRH Gonadotropin releasing hormone HPA Hypothalamo–pituitary–adrenal axis

Daily subcutaneous testosterone for management of testosterone deficiency.

Testosterone deficiency (TD) is a public health concern, a predictor of metabolic syndrome, and is associated with an increased all-cause and cardiovascular mortality. Testosterone deficiency in men is treated by a variety of methods including injectable testosterone compounds, patches, gels, pellets, and oral preparations. The use of testosterone alone has been linked to various adverse effect...

Coexpression of gonadotropin inhibitory hormone with Agouti-related peptide in the neurons of arcuate nucleus of ewe hypothalamus

Introduction: Gonadotropin inhibitory hormone (GnIH) and Agouti-related peptide (AgRP) are orexigenic peptides expressed in the arcuate nucleus (Arc) of the hypothalamus in the ewe. In addition, effects of GnIH and AgRP on the regulation of gonadotropin releasing hormone secretion have been shown in some mammals. The objective of the present study was to investigate the coexpression of GnIH ...

Dehydroepiandrosterone sulfate levels reflect endogenous luteinizing hormone production and response to human chorionic gonadotropin challenge in older female macaque (Macaca fascicularis).

OBJECTIVE We propose that the adrenal gland of an older higher primate female animal model will respond to human chorionic gonadotropin (hCG) hormone challenge by secreting additional dehydroepiandrosterone sulfate (DHEAS). Such a response in surgically and chemically castrated animals will provide proof of concept and a validated animal model for future studies to explore the rise in DHEAS dur...