Sertoli cells are highly specialized somatic cells located within the seminiferous tubules of the testes. They play a fundamental role in supporting and regulating spermatogenesis. Often referred to as “nurse cells,” Sertoli cells provide structural support, nutritional supply, and biochemical signaling necessary for germ cell maturation.
These cells form the blood–testis barrier through tight junctions, creating a protected microenvironment that shields developing germ cells from systemic immune responses. They also regulate the movement of germ cells across the seminiferous epithelium during different stages of development.
Follicle-stimulating hormone (FSH) directly stimulates Sertoli cell activity, promoting spermatogenic progression. Additionally, Sertoli cells secrete inhibin B, which exerts negative feedback on the anterior pituitary to regulate FSH production.
Dysfunction of Sertoli cells may result from genetic abnormalities, infections, toxins, or hormonal imbalance. Clinically, Sertoli cell impairment manifests as reduced sperm count, abnormal morphology, or complete spermatogenic arrest.
Assessment of inhibin B levels, semen analysis, and testicular biopsy may assist in evaluating Sertoli cell function. A detailed understanding of these cells enhances diagnostic precision in erotic male infertility management.
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