Abstract
This study characterizes the clinical and morphofunctional effects of a 5α-reductase inhibitor on steroid hormone receptors in normal human prostate tissue, as potential mediators of the clinical effects of dutasteride. This work was a prospective, double-blind, and randomized study that evaluated 49 men aged between 45 and 70 years, with no alterations in a digital rectal examination and prostate-specific antigen measurements between 2.5 and 4.0 ng/mL. These patients underwent prostate biopsy guided by transretal ultrasound with prostate neoplasia being ruled out, and the patients were divided into two groups, with one group receiving dutasteride ( n = 25) and one group receiving a placebo ( n = 24). The patients were clinically assessed each quarter, and at the end of 12 months they underwent new laboratory tests, prostate rebiopsy, and histopathological, immunohistochemical and clinical analyses. The estrogen receptor-beta (ERβ) and androgen receptor immunoreactivities were higher, and the proliferation/apoptotic ratio was significantly lower with predominance of the apoptotic process, followed by a significant reduction in the prostate volume and the total serum prostate-specific antigen levels in the dutasteride group when...Continue Reading
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