title: [Effects of 40H-tamoxifen on the proliferation and apoptosis of prostate stromal cells].
abstract: OBJECTIVE
  To investigate the effects of 4OH-Tamoxifen (OHT) on proliferation and apoptosis of primary cultured prostate stromal cells.
  
  
  METHODS
  Primarily cultured prostate stromal cells in vitro were treated with various concentrations (10(-8) mol/L - 10(-5) mol/L) of estradiol (E2), diethylstilbestrol (DES), OHT and the mixture of E2 (10(-8) mol/L - 10(-6) mol/L) with OHT (10(-7) mol/L) and then MTT and TUNEL were used to detect their proliferation and apoptosis respectively.
  
  
  RESULTS
  There was a significant difference (P < 0.05) between OHT and estrogens in the effects on the apoptosis and proliferation of the primarily cultured prostate stromal cells. OHT suppressed proliferation of the prostate stromal cells at the concentrations from 10(-7) mol/L to 10(-5) mol/L (P < 0.05), and this effect was concentration related (r = -0.383, P = 0.005); OHT (10(-7) mol/L) suppressed the proliferation stimulation effect of E2 at the concentrations from 10(-8) mol/L to 10(-6) mol/L (P < 0.05). OHT induced apoptosis at the concentrations from 10(-8) mol/L to 10(-5) mol/L (P < 0.05), and this effect was concentration related (r = 0.349, P = 0.012). The apoptosis induced by OHT could not be reversed by E2 at the concentrations from 10(-8) mol/L to 10(-5) mol/L (P > 0.05).
  
  
  CONCLUSIONS
  OHT can obviously suppressed the proliferation and promote the apoptosis of primarily cultured prostate stromal cells, which might not be totally attributed to the competitive inhibition of the estrogen receptor.
authors.affiliation: The Second Department of Urology, First Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150086, China.
authors.forename: Yi-Ming
authors.initials: YM
authors.lastname: Fu
authors.forename: Qiu-Ming
authors.initials: QM
authors.lastname: Li
authors.forename: Chun-Ying
authors.initials: CY
authors.lastname: Zhang
authors.forename: Zhao-Yan
authors.initials: ZY
authors.lastname: Chen
authors.forename: Cheng-Luo
authors.initials: CL
authors.lastname: Jin
authors.forename: Yun-Hui
authors.initials: YH
authors.lastname: Chan
authors.forename: Min-Kai
authors.initials: MK
authors.lastname: Wu
mesh_terms: D018931:Antineoplastic Agents, Hormonal / Q000494:pharmacology; D017209:Apoptosis / Q000187:drug effects*; D049109:Cell Proliferation / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008297:Male; D011467:Prostate / Q000166:cytology; D017154:Stromal Cells / Q000166:cytology / Q000187:drug effects*; D013629:Tamoxifen / Q000494:pharmacology*
chemical_list: D018931:Antineoplastic Agents, Hormonal; D013629:Tamoxifen