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. 2013 Jan 15;699(1-3):112-7.
doi: 10.1016/j.ejphar.2012.11.040. Epub 2012 Dec 3.

Anti-inflammatory effects of carvacrol: evidence for a key role of interleukin-10

Milena da Silva Lima  1 , Lucindo J Quintans-Júnior, Wagno Alcântara de Santana, Carla Martins Kaneto, Milena Botelho Pereira Soares, Cristiane Flora Villarreal
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Anti-inflammatory effects of carvacrol: evidence for a key role of interleukin-10

Milena da Silva Lima et al. Eur J Pharmacol. .
Free article

Abstract

Carvacrol, a phenolic monoterpene, has been reported to possess anti-inflammatory properties. However, the mechanisms involved in its pharmacological properties are currently not well understood. In the present study, the contribution of cytokine modulation to the anti-inflammatory effects of carvacrol was investigated in a classical inflammation model: the complete Freund's adjuvant (CFA)-induced paw inflammation in mice. The paw edema was measured using a plesthismometer. Paw tissue was removed 2h after the inflammatory stimulus to determine the levels of prostaglandin E(2) (PGE(2)) by enzyme immunoassay, the levels of interleukin-1 β (IL-1β), tumor necrosis factor-α (TNF-α), and interleukin-10 (IL-10) by ELISA or the mRNA expression of cyclooxygenase-2 (COX-2), IL-1β, TNF-α, and IL-10 by real-time PCR. Administration of carvacrol produced anti-inflammatory effects against CFA-induced inflammation in mice. Treatment of mice with carvacrol at 50 and 100mg/kg attenuated the paw edema and reduced the IL-1β and PGE(2), but not TNF-α, local levels. Similarly, carvacrol (100mg/kg) reduced the COX-2 and IL-1β mRNA expression. The levels of IL-10, an anti-inflammatory cytokine, and the IL-10 mRNA expression in the inflamed paw were enhanced by carvacrol. In addition, the treatment with carvacrol did not reduce the CFA-induced paw edema in IL-10 knockout mice. The present results suggest that carvacrol causes anti-inflammatory effects by reducing the production of inflammatory mediators, such as IL-1β and prostanoids, possibly through the induction of IL-10 release.

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