concept

Leydig cells

Also known as: Leydig cell

Facts (13)

Sources

Physiology, Male Reproductive System - StatPearls - NCBI Bookshelf ncbi.nlm.nih.gov National Library of Medicine 11 facts

claimLeydig cells are located in the interstitium of the testes adjacent to the seminiferous tubules and are characterized by pink cytoplasm and pink crystals of Reinke on histology.

claimLeydig cells in the testes produce testosterone, which is the primary driver of male reproductive development.

claimFSH and LH exert their physiological effects by binding to and activating a G protein receptor, which activates adenylyl cyclase and increases cellular cAMP levels to stimulate Sertoli and Leydig cells.

claimLH stimulates Leydig cells in the interstitium of the testes to produce testosterone from cholesterol.

claimWhile the majority of testosterone production in men occurs in the Leydig cells of the testes, the adrenal cortex also contributes to androgen production.

claimTestosterone is the major male androgen and is produced by Leydig cells located in the testes.

claimThe anterior pituitary secretes LH and FSH into the blood, which act on membrane receptors in the Leydig and Sertoli cells of the testes, respectively.

claimLoss of testicular function results in damaged or underdeveloped Leydig or Sertoli cells that cannot respond to stimuli to maintain reproductive function.

claimLeydig cells produce testosterone, a steroid hormone that regulates protein expression by binding to intracellular receptors in different tissues.

claimIn cases of secondary hypogonadism, Leydig and Sertoli cells remain functional and intact but cannot exert their effects due to a lack of proper stimuli (GnRH, LH, or FSH), resulting in low testosterone levels or loss of spermatogenesis.

claimLuteinizing hormone (LH) stimulates Leydig cells to increase testosterone production, which causes the growth and pigmentation of the scrotum and penis.

Seasonal Changes of Serum Gonadotropins and Testosterone in ... frontiersin.org Frontiers Jan 9, 2020 2 facts

referenceScrotal hyperthermia in rats causes long-term effects on Leydig cells, as observed in a histological, immunohistochemical, and ultrastructural study published in the Journal of Molecular Histology in 2009.

claimIn animal models, local heat has a detrimental effect on Leydig cell activity and survival, with heat-induced testicular damage mediated by the activation of specific apoptotic pathways.