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- W2370361963 abstract "Objective To investigate the regulatory effect of transforming growth factor-β 1 (TGF-β 1)on the proliferation and apoptosis of human prostatic epithelial cells in vitro. Methods The primary culture was prepared by collagenase dissociation of minced prostatic tissue obtained from 8 BPH patients (53 to 70 of age) on open prostatectomy and from 5 organ donors (23 to 36).Cells were cultured in serum free prostate epithelial cell growth media and identified by immunocytochemical studies.The cells were passaged and cultured in media free of bovine pituitary extract and EGF and TGF-β 1 and EGF in different doses were then added either alone or in combination according to experimental requirement.The rate of cell proliferation was assessed by counting the cell number and by 5-bromo-2'-deoxyuridine (ELISA).Apoptosis induced by TGF-β 1 was examined by in situ transferase-mediated dUTP nick and labeling. Results The cultured cells had the typical morphological features of epithelium and stained positive for PSA and Pan-Keratin.The cells from normal prostates of young donors showed more mitogenic activity than those from BPH prostates.EGF enhanced cell proliferation whereas TGF-β 1 inhibited cell proliferation which could be reversed by increasing concentration of EGF.TGF-β 1 induced apoptosis of human prostatic epithelial cells.The effect of TGF-β 1 and EGF was concentration dependent. Conclusions TGF-β 1 is a direct physiological regulator of cell proliferation and cell apoptosis of human prostatic epithelial cells." @default.
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- W2370361963 date "2001-01-01" @default.
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- W2370361963 title "The regulatory effect of transforming growth factor-β_1 on the proliferation and apoptosis of human prostatic epithelial cells" @default.
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