Naringin attenuates the development of carrageenan-induced acute lung inflammation through inhibition of NF-κb, STAT3 and pro-inflammatory mediators and enhancement of IκBα and anti-inflammatory cytokines

Inflammation. 2015 Apr;38(2):846-57. doi: 10.1007/s10753-014-9994-y.

Abstract

Naringin has been reported to possess diverse pharmacological properties, including anti-arthritic and anti-inflammatory activities. The aim of the present study was to determine the potential anti-inflammatory effect of naringin in a mouse model of carrageenan-induced pleurisy. A single dose of naringin (40 and 80 mg/kg) was administered per oral (p.o.) 1 h before carrageenan (Cg) administration. Pro- and anti-inflammatory cytokines were analysed in pleural fluid. We also assessed the effects of naringin on the expression levels of iNOS, inducible cyclooxygenase isoform (COX-2), ICAM-1, MIP-2, PGE2, STAT3, TGF-β1, nuclear factor kappa B (NF-κB) and inhibitor of kappa B (IκBα) in lung tissue. The histological examinations revealed anti-inflammatory effect of naringin while Cg group deteriorated. Naringin downregulated Th1 and upregulated Th2 cytokines. Western blot analyses revealed increased protein expression of NF-κB, STAT3 and COX-2 and decreased IκBα in response to Cg treatment, which were reversed by the treatment with naringin. In the Cg group, mRNA expression levels of pro-inflammatory mediators upregulated and anti-inflammatory mediators downregulated. Naringin reversed these actions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents / pharmacology
  • Anti-Inflammatory Agents / therapeutic use
  • Carrageenan / toxicity
  • Cytokines / antagonists & inhibitors*
  • Cytokines / metabolism
  • Dose-Response Relationship, Drug
  • Female
  • Flavanones / pharmacology*
  • Flavanones / therapeutic use
  • I-kappa B Kinase / antagonists & inhibitors*
  • I-kappa B Kinase / metabolism
  • Inflammation Mediators / antagonists & inhibitors
  • Inflammation Mediators / metabolism
  • Mice
  • Mice, Inbred BALB C
  • NF-kappa B / antagonists & inhibitors*
  • NF-kappa B / metabolism
  • Pleurisy / metabolism
  • Pleurisy / prevention & control*
  • STAT3 Transcription Factor / antagonists & inhibitors*
  • STAT3 Transcription Factor / metabolism

Substances

  • Anti-Inflammatory Agents
  • Cytokines
  • Flavanones
  • Inflammation Mediators
  • NF-kappa B
  • STAT3 Transcription Factor
  • Stat3 protein, mouse
  • Carrageenan
  • Chuk protein, mouse
  • I-kappa B Kinase
  • naringin