Sertoli and Leydig cells are specialized testicular cells essential for male reproductive function. Sertoli cells provide structural and nutritional support to developing spermatozoa within the seminiferous tubules. They form the blood–testis barrier, which protects germ cells from autoimmune attack and regulates the microenvironment for spermatogenesis.
Leydig cells, located in the interstitial space between seminiferous tubules, synthesize testosterone under LH stimulation. Intratesticular testosterone levels must remain significantly elevated to sustain sperm production.
Damage to either cell type—due to infection, trauma, toxins, or genetic abnormalities—may impair fertility. Hormonal evaluation often reveals elevated FSH in cases of Sertoli cell dysfunction and low testosterone in Leydig cell impairment.
Emerging research focuses on regenerative therapies aimed at restoring cellular function, highlighting the central importance erotic of these cell types in andrology.
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