Document Detail

Effects of (-)doxazosin on histomorphologic and cell apoptotic changes of the hyperplastic prostate in castrated rats.
MedLine Citation:
PMID:  19745610     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: (-)Doxazosin is one of the enantiomers of (+/-)doxazosin, and it was reported that (-)doxazosin possessed higher selectivity for lower urinary tract between the cardiovascular system and the urinary system in the animal experiments in comparison with that of (+/-)doxazosin and (+)doxazosin. Therefore, it is important to know whether (-)doxazosin has a therapeutic effect on the hyperplastic prostate. METHODS: (-)Doxazosin and (+/-)doxazosin were administered intragastrically to prostatic hyperplasia rats, induced by testosterone propionate for 4 weeks, and each experimental group contained 8 animals. The histomorphologic changes of the prostate were observed under light microscope, the quantitative analysis of the prostatic glandular cavity was performed using an image analysis system, and the cell apoptosis was detected by using flow cytometry. RESULTS: In comparison with model-control group, the volume index of the prostate in (-)doxazosin 3.0 mg/kg group became significantly smaller. The maximal diameter, perimeter, and area of the hyperplastic prostate glandular cavity, and the glandular epithelial cell height in (-)doxazosin (0.3, 1.0, and 3.0 mg/kg) groups and (+/-)doxazosin group were significantly reduced. (-)Doxazosin and (+/-)doxazosin did not significantly affect cell cycle distribution and cell proliferation index of the hyperplastic prostate. However, apoptotic rates of the prostatic cells in (-)doxazosin (0.3, 1.0, and 3.0 mg/kg) groups and (+/-)doxazosin group were significantly increased in comparison with those of model-control group. CONCLUSIONS: Both (-)doxazosin and (+/-)doxazosin inhibit the prostatic hyperplasia induced by testosterone propionate in castrated rats. The induction of prostate cell apoptosis might be one of the mechanisms underlying the therapeutic role of (-)doxazosin.
He-Lin Tian; Ding Zhao; Lei-Ming Ren; Xian-Hui Su; Yan-Hui Kang
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The American journal of the medical sciences     Volume:  338     ISSN:  1538-2990     ISO Abbreviation:  Am. J. Med. Sci.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-11     Completed Date:  2009-09-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370506     Medline TA:  Am J Med Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  196-200     Citation Subset:  AIM; IM    
School of Pharmacy, Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China.
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MeSH Terms
Apoptosis / drug effects*
Doxazosin / therapeutic use*
Prostatic Hyperplasia / chemically induced,  drug therapy*,  pathology
Rats, Wistar
Testosterone Propionate / toxicity
Reg. No./Substance:
57-85-2/Testosterone Propionate; 74191-85-8/Doxazosin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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