Procyanidin B2 ameliorates carrageenan-induced chronic nonbacterial prostatitis in rats via anti-inflammatory and activation of the Nrf2 pathway

Biochem Biophys Res Commun. 2017 Nov 4;493(1):794-799. doi: 10.1016/j.bbrc.2017.08.089. Epub 2017 Aug 24.

Abstract

Prostatitis is one of the most prevalent problems in andriatry and urinary surgery. In the present study, we evaluated the effect of procyanidin B2 (PB) on carrageenan-induced chronic nonbacterial prostatitis in rats. Results showed that PB significantly decreased the prostatic index and enhanced the body weight inhibited by carrageenan. Biochemical results revealed that PB significantly lowered the prostatic specific antigen (PSA) and alleviated oxidative stress in serum. The levels of TNF-α, IL-6, and IL-10 in prostatic homogenate were also significantly decreased after PB treatment. We also found evidence that PB treatment reversed the suppression of Nrf2 nuclear translocation, and increased the expressions of NQO1 and HO-1 in the prostate glands. In conclusion, treatment with PB attenuates carrageenan-induced chronic nonbacterial prostatitis via anti-inflammatory and activation of the Nrf2 pathway.

Keywords: Anti-inflammatory; Chronic nonbacterial prostatitis; Nrf2; Oxidative stress; Procyanidin B2.

MeSH terms

  • Animals
  • Anti-Inflammatory Agents / administration & dosage
  • Bacterial Infections / chemically induced
  • Bacterial Infections / pathology
  • Biflavonoids / administration & dosage*
  • Carrageenan
  • Catechin / administration & dosage*
  • Cytokines / immunology*
  • Dose-Response Relationship, Drug
  • Gene Expression Regulation / immunology
  • Immunologic Factors / immunology
  • Male
  • NF-E2-Related Factor 2 / immunology*
  • Proanthocyanidins / administration & dosage*
  • Prostatitis / chemically induced
  • Prostatitis / immunology*
  • Prostatitis / pathology
  • Rats
  • Rats, Sprague-Dawley
  • Signal Transduction / drug effects
  • Signal Transduction / immunology*

Substances

  • Anti-Inflammatory Agents
  • Biflavonoids
  • Cytokines
  • Immunologic Factors
  • NF-E2-Related Factor 2
  • Nfe2l2 protein, rat
  • Proanthocyanidins
  • procyanidin B2
  • Catechin
  • Carrageenan