1. Quantitation of α1A and α1D-adrenoceptor mRNA in prostate tissues from patients with symptomatic benign prostatic hyperplasia
- Author
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B Acharya, H Okada, G Aryal, T Shirakawa, N Hinata, and A Gotoh
- Subjects
Adrenoceptor subtypes ,Benign prostatic hyperplasia ,Quantitative reverse transcription-polymerase chain reaction ,Pathology ,RB1-214 - Abstract
Background: To treat symptomatic benign prostatic hyperplasia α1-adrenoceptor antagonists with little antagonism at α1b-adrenoceptor were used to avoid orthostatic hypotension. In benign prostatic hyperplasia tissues α1D-adrenoceptor are thought to predominate, but in the Japanese experience, either α1A- or α1D- adrenoceptor antagonists can alleviate benign prostatic hyperplasia symptoms. We hypothesized that prostatic expression of α1A- and α1D-adrenoceptor varies quantitatively between patients. Materials and Methods: We immunohistochemically localized α1A- and α1D-adrenoceptor within benign prostatic hyperplasia tissues, and quantitated mRNA expression for these subtypes by real-time quantitative reverse transcription-polymerase chain reaction. Results: Immunohistochemistry detected both subtypes in stromal but not detected epithelial cells. Copy numbers of α1A-adrenoceptor mRNA in benign prostatic hyperplasia tissue were significantly higher than those of α1D-adrenoceptor mRNA. Among patients; the ratio of α1A- to α1D-adrenoceptor mRNA ranged from 1.0 to 8.4. Conclusion: An ideal therapeutic antagonist for treating benign prostatic hyperplasia symptoms should block both α1A- and α1D-adrenoceptor Keywords: Adrenoceptor subtypes; Benign prostatic hyperplasia; Quantitative reverse transcription-polymerase chain reaction DOI: 10.3126/jpn.v1i1.4439Journal of Pathology of Nepal (2011) Vol.1, 1-7
- Published
- 2011
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