De novo biosynthesis of FSH like peptide by the human prostate.

Human benign prostatic hyperplasia tissue is able to synthesize immunoreactive FSH (IR FSH) in vitro. The prostatic FSH is similar to pituitary FSH as evident by co-elution on Sephadex G-100. High performance gel filtration chromatography and Western blot analysis. Immunocytochemical localization studies indicate positive staining in the cytoplasm of prostatic epithelial cells. There is a two fold increase in the concentration of immunoreactive FSH in benign hyperplastic tissue as compared to normal prostate.