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Hum. Reprod. Advance Access published online on September 9, 2005
Human Reproduction, doi:10.1093/humrep/dei296
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© The Author 2005. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved.
Received June 6, 2005
Revised August 10, 2005
Accepted August 12, 2005

Article

17{beta}-Estradiol suppresses proliferation of fibroblasts derived from cardinal ligaments in patients with or without pelvic organ prolapse

Y.M. Liu 1, K.W. Choy 1, W.T. Lui 1, M.W. Pang 1, Y.F. Wong 1, and S.K. Yip 1*

1 Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong

* To whom correspondence should be addressed.
S.K. Yip, E-mail: yipsk{at}cuhk.edu.hk


  Abstract

BACKGROUND: Estrogen replacement therapy (ERT) has been used in the treatment of pelvic organ prolapse (POP) but clinical results are inconclusive. The purpose of this study was to investigate the effect of 17{beta}-estradiol (E2) on the proliferation of fibroblasts derived from cardinal ligaments in women with or without POP. METHODS: Fibroblasts were derived from seven patients with POP and seven age-matched controls. The growth rate of POP fibroblasts was compared with that of control by 3-(4,5,-dimethyl thiazolyl-2)-2,5-diphenyl tetrazolium bromide (MTT) assay. Four cell strains from each patient and control group were treated with different concentrations of E2 (10-4, 10-8, 10-9 and 10-10 mol/l). The effect of E2 on cell proliferation was then measured by MTT assay. RESULTS: The overall growth rate of POP fibroblasts was significantly slower than that of controls under normal culture conditions. Addition of E2 suppressed cell proliferation of all the fibroblasts, especially in POP fibroblasts. POP fibroblasts showed a significantly lower proliferative rate than that of controls at all E2 concentrations, with the most prominent inhibitory effect at physiological concentration (10.83 ± 34.41% versus 81.56 ± 48.10% at 10-8 mol/l). CONCLUSIONS: Our results suggest that decreased fibroblast turnover may contribute to the development of POP; and ERT may not be an effective POP treatment.

Keywords: 17{beta}-estradiol/cardinal ligament/cell proliferation/fibroblasts/pelvic organ prolapse.
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