alexa Serum inhibin B as a marker for spermatogenesis.
Clinical Research

Clinical Research

JBR Journal of Clinical Diagnosis and Research

Author(s): Hipler UC, Hochheim B, Knll B, Tittelbach J, Schreiber G

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Abstract Inhibin B generated by Sertoli cells provides negative feedback on FSH secretion. In men, inhibin B seems to be the physiologically important form of inhibin. Serum inhibin B was measured by two-site immunoenzymatic assay in 40 normal men (27 years of age) with sperm concentrations 100 +/- 9.2 x 10(6)/mL, 51 subfertile men (31 years of age) with sperm concentrations 6.8 +/- 0.8 x 10(6)/mL, 16 men with varicocele with sperm concentrations 54.3 +/- 0.8 x 10(6)/mL (31 years of age), men with hypogonadotrophic hypogonadism, men with Klinefelter syndrome, and men with obstructive and non-obstructive azoospermia. In men with normal sperm concentrations (>20 x 10(6) mL) serum inhibin B was 201 +/- 17 pg/mL and FSH 4 +/- 0.5 IU/L. Varicocele patients showed normal sperm concentrations > 20 x 10(6)/mL, normal serum inhibin B (173 +/- 21 pg/mL), and normal FSH levels (4.6 +/- 0.6 IU/L). In patients with sperm concentrations < 20 x 10(6)/mL the inhibin B level was 118 +/- 14 pg/mL and the FSH level was 10 +/- 1.1 IU/L. In all patients, except those with hypogonadotrophic hypogonadism and Klinefelter syndrome. inhibin B and FSH were inversely correlated (r = -.41, p > 0.01). There was a positive correlation between inhibin B and sperm concentrations (r = .34, p < .01). In varicocele men there was a correlation of r = .574, p < .05. Inhibin B may be a marker of exocrine testicular function and may offer an improved diagnosis of testicular dysfunction.
This article was published in Arch Androl and referenced in JBR Journal of Clinical Diagnosis and Research

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