Effect of tadalafil once daily on prostate blood flow and perfusion in men with lower urinary tract symptoms secondary to benign prostatic hyperplasia: a randomized, double-blind, multicenter, placebo-controlled trial. Academic Article Article uri icon

Overview

MeSH

  • Aged
  • Double-Blind Method
  • Drug Administration Schedule
  • Humans
  • Male
  • Middle Aged
  • Prostatic Hyperplasia
  • Tadalafil

MeSH Major

  • Carbolines
  • Lower Urinary Tract Symptoms
  • Phosphodiesterase 5 Inhibitors
  • Prostate
  • Regional Blood Flow

abstract

  • To assess effects of tadalafil vs placebo on prostatic blood flow measured by transrectal ultrasonography in men aged ≥45 years with moderate-to-severe benign prostatic hyperplasia-lower urinary tract symptoms. After screening and washout, patients were randomized to placebo (n = 50) or tadalafil 5 mg (n = 47) once daily for 8 weeks. Transrectal ultrasonography was performed at baseline, 4, and 8 weeks. The primary efficacy measure was the prostate transition zone (TZ) resistive index (RI). Secondary efficacy measures were RI in the peripheral zone and bladder neck, color pixel intensity (CPI), and color pixel density (CPD) in all 3 regions. Outcomes were assessed using mixed-model repeated-measures analyses. The overall treatment effect (tadalafil vs placebo) for the change from baseline through week 8 in prostate TZ RI was not statistically significant (least squares mean change: placebo, -0.01; tadalafil, 0.00; P = .118), nor was the change from baseline in prostate TZ CPI (P = .564) or CPD (P = .592). Results were similar for all flow measures in prostate peripheral zone and bladder neck. The adverse event profile was consistent with previous studies with no new safety findings. Tadalafil for 8 weeks in men with BPH-LUTS did not result in detectable decreases in arterial RI or increases in CPI or CPD in the prostate or bladder neck. Detection of changes may not be possible because of already low baseline RI, insufficient sensitivity of techniques used, or may have been confounded by methodologic variability across sites. Alternatively, other possible mechanisms not assessed in this study may be more prominently involved. Copyright © 2014 Elsevier Inc. All rights reserved.

publication date

  • August 2014

has subject area

  • Aged
  • Carbolines
  • Double-Blind Method
  • Drug Administration Schedule
  • Humans
  • Lower Urinary Tract Symptoms
  • Male
  • Middle Aged
  • Phosphodiesterase 5 Inhibitors
  • Prostate
  • Prostatic Hyperplasia
  • Regional Blood Flow
  • Tadalafil

Research

keywords

  • Journal Article
  • Multicenter Study
  • Randomized Controlled Trial

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1016/j.urology.2014.02.063

PubMed ID

  • 24938580

Additional Document Info

start page

  • 412

end page

  • 419

volume

  • 84

number

  • 2