Premium
Pygeum africanum extract inhibits proliferation of human cultured prostatic fibroblasts and myofibroblasts
Author(s) -
Boulbès Delphine,
Soustelle Laurent,
Costa Pierre,
Haddoum Mohammed,
Bali JeanPierre,
Hollande Frédéric,
Magous Richard
Publication year - 2006
Publication title -
bju international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 1464-4096
DOI - 10.1111/j.1464-410x.2006.06483.x
Subject(s) - stromal cell , cell culture , cell growth , microbiology and biotechnology , fibroblast , hyperplasia , cytotoxicity , fetal bovine serum , vimentin , biology , cancer research , chemistry , endocrinology , immunology , in vitro , immunohistochemistry , biochemistry , genetics
OBJECTIVE To investigate the effect of Pygeum africanum ( PA ) extract on the proliferation of cultured human prostatic myofibroblasts and fibroblasts; this extract is used for treating urinary disorders associated with benign prostatic hyperplasia (BPH). MATERIALS AND METHODS Primary cultures of prostatic stromal cells were obtained from histologically confirmed human BPH by enzymatic digestion. Cell proliferation was measured by 5‐bromo2′‐deoxy‐uridine (BrdU) incorporation assays, and cytotoxicity by luminescent quantification of adenylate kinase activity. RESULTS Cultured cells were labelled by an anti‐vimentin antibody, and most of them by an α−smooth‐muscle‐actin antibody, revealing the presence of fibroblasts and myofibroblasts. BrdU incorporation tests showed that proliferation of cultured human stromal cells, stimulated by fetal calf serum, by basic fibroblast growth factor and by epidermal growth factor, was dose‐dependently inhibited by PA extract (5–100 µg/mL). Except at 100 µg/mL, no acute cytotoxicity of the extract was detected after 24 h of culture. Similarly, the extract dose‐dependently inhibited the proliferation of Madin–Darby canine kidney epithelial cells, but to a lesser extent; whatever the dose of extract, no acute toxicity was evident on this cell line. CONCLUSION PA extract inhibits the proliferation of cultured human prostatic myofibroblasts and fibroblasts. We propose that cultured human prostatic cells offer a reliable model for preclinical screening of therapeutic agents, and to study the mechanisms underlying the inhibition of proliferation.