Pentosan polysulfate decreases prostate smooth muscle proliferation and extracellular matrix turnover.

Published

Journal Article

Benign prostatic hyperplasia (BPH) involves proliferation of smooth muscle cells and increased deposition of extracellular matrix (ECM). We recently found that pentosan polysulfate (PPS) has marked effects on growth and ECM of smooth muscle cells derived from vascular tissues. We examined smooth muscle cells cultured from human prostates and the effects of PPS on their growth and ECM production. Fragments of surgical prostatectomy specimens were diced, digested with collagenase (0.01%), and placed in culture medium supplemented with 20% fetal bovine serum. Outgrowths of elongated cells were characterized by light microscopic examination and immunohistochemical techniques by the presence of F-actin, alpha-smooth muscle actin, and myosin, which is a characteristic of smooth muscle cells. Two independent isolates were propagated, and growth curves and ECM production were assessed in the presence and absence of PPS (10 or 100 microg/ml). PPS decreased cell number beginning at day 1 and throughout the incubation period, up to 4 days. The amount of the ECM degradative enzymes, metallo-proteinases MMP-9 and MMP-2, was examined by zymography. PPS did not alter the amount of MMP-2 in the supernatants but MMP-9 was increased 234.4 +/- 17.23-fold over control cells. Tissue inhibitor of MMP (TIMPS), examined by reverse zymography, increased 200% over control. The amount of alpha I type (IV) and alpha I type (I) collagen released in the supernatant, measured by ELISA, significantly decreased in PPS-treated cultures. In conclusion, we found that the administration of PPS decreased proliferation as well as ECM production in prostate smooth muscle. Since smooth muscle proliferation and ECM are involved in the pathophysiology of BPH, PPS may have therapeutic potential.

Full Text

Duke Authors

Cited Authors

  • Elliot, SJ; Zorn, BH; McLeod, DG; Moul, JW; Nyberg, L; Striker, LJ; Striker, GE

Published Date

  • 2003

Published In

Volume / Issue

  • 6 / 2

Start / End Page

  • 138 - 142

PubMed ID

  • 12806372

Pubmed Central ID

  • 12806372

International Standard Serial Number (ISSN)

  • 1365-7852

Digital Object Identifier (DOI)

  • 10.1038/sj.pcan.4500632

Language

  • eng

Conference Location

  • England