Abnormalities of apoptotic and cell cycle regulatory proteins in distinct histopathologic components of benign prostatic hyperplasia

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11 Scopus citations

Abstract

Introducion: Benign prostatic hyperplasia (BPH) is a slowly progressive abnormal glandular enlargement with heterogeneous morphology. Disruption of apoptotic pathways has been suggested as an important regulatory mechanism in this common and significantly morbid disease. Methods: Prostatic tissue from 20 patients with BPH and no prior or subsequent prostatic carcinoma was obtained by transurethral prostatectomy (TURP) at the University of California Davis. Apoptotic regulatory proteins: BCL2, BAX and p27 were analyzed by immunohistochemistry and evaluated for expression in four distinct histologic patterns: hyperplastic epithelium, nodules, dilated glands and atrophic/inflammatory glands. Results: Particularly striking was the decreased expression of BAX and an abnormal BCL2:BAX ratio within all nodules relative to expression in other epithelial patterns. p27 expression was decreased in 35% of the hyperplastic epithelial areas and 10% of the nodules. Discussion: Overall, abnormal expression of BCL2, BAX and/or p27 was identified in the hyperplastic epithelium of 19 (90%) of specimens and all 12 (100%) of the hyperplastic nodules. The high frequency of abnormalities in apoptosis regulatory genes, suggests that alteration of apoptotic pathways is important for the development of this condition.

Original languageEnglish (US)
Pages (from-to)321-326
Number of pages6
JournalProstate Cancer and Prostatic Diseases
Volume7
Issue number4
DOIs
StatePublished - Dec 2004

Keywords

  • Apoptosis
  • BAX
  • BCL2
  • Benign prostatic hyperplasia
  • p27

ASJC Scopus subject areas

  • Oncology
  • Urology

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