Hypothalamic-Pituitary Axis
Definition
The hypothalamic-pituitary axis is the neuroendocrine system connecting the hypothalamus to the anterior pituitary gland, governing the secretion of hormones including growth hormone, gonadotropins, thyroid-stimulating hormone, and ACTH. Hypothalamic releasing hormones (GHRH, GnRH, TRH) travel via the portal circulation to stimulate pituitary hormone release. Many research peptides — including sermorelin, gonadorelin, and PE-22-28 — act on components of these axes.
Related Terms
Related Compounds
Sermorelin
An in-depth review of Sermorelin (GHRH 1-29), a growth hormone-releasing hormone analog, covering its mechanism of action, pharmacokinetics, safety profile, research applications in GH stimulation, anti-aging, and pituitary function preservation.
Read monographGonadorelin
An in-depth review of gonadorelin, the native gonadotropin-releasing hormone (GnRH) decapeptide that regulates the hypothalamic-pituitary-gonadal axis. This monograph covers its mechanism of action at the GnRH receptor on pituitary gonadotrophs, the critical role of pulsatile secretion in differential LH/FSH regulation, pharmacokinetics, diagnostic and research applications, and key published studies.
Read monographRelated Studies
Gonadotropin-releasing hormone analogs: mechanisms of action and clinical applications in female reproduction
Wu HM, Chang HM, Leung PCK · Frontiers in Neuroendocrinology (2021)
European Consensus Statement on congenital hypogonadotropic hypogonadism — pathogenesis, diagnosis and treatment
Boehm U, Bouloux PM, Dattani MT, et al. · Nature Reviews Endocrinology (2015)
Growth hormone-releasing hormone and aging
Merriam GR, Schwartz RS, Vitiello MV · Endocrine (2001)
Clinical uses of gonadotropin-releasing hormone analogues
Casper RF · Canadian Medical Association Journal (1991)