Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

The Suppression of Adjuvant-induced Inflammation and the Inhibition of the Serum and Tissue IL-17, TNF-α and IL-1β levels by Thymol and Carvacrol

Read this article at

ScienceOpenPublisherDOAJ
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Background and Aim: Thymol and carvacrol are two important components of thyme that have multiple medicinal uses. This study investigates the in vivo effects of these natural products on adjuvant-induced inflammation and secretion of interleukin (IL)-17 and key inflammatory cytokines in rats. Materials and Methods: We injected complete Freund’s adjuvant (CFA) into the hind paws of rats in order to induce inflammation. Each of the CFA-treated rat groups received gavages of thymol, carvacrol, or vehicle (CFA-only group). Rats’ paws and ankle edema were measured and then we were able to determine an inflammatory score based on the results. After 72 h of inflammation induction, sera were collected and subsequently inflamed tissue extracts were prepared for cytokine assay by ELISA. Results: Both components significantly decreased paw edema in rats (p<0.01). Thymol decreased ankle edema to 61.6% of edema in CFA-only rats (p<0.001). We observed a decreased inflammatory score in the thymol and carvacrol-treated rats. The evaluation of the tissue and serum inflammatory cytokine levels showed that both components decreased tumor necrosis factor (TNF)-α levels (p<0.05). Thymol and carvacrol reduced interleukin (IL)-1β serum and tissue levels, respectively. These components reduced tissue levels of IL-17 from 148.4±13.4pg/ml in CFA-only rats to 90.1±18.9pg/ml (thymol) and 82.3±9.2pg/ml (carvacrol). Both components decreased serum IL-17 levels in rats (p<0.05). In comparison, the anti-inflammatory drug, indomethacin, reduced the inflammatory score and decreased tissue TNF-α and IL-1β levels but did not affect IL-17 production. Conclusion: Carvacrol and thymol could relieve inflammation symptoms possibly by downregulating serum and tissue IL-17 expression in addition to key pro-inflammatory cytokines, TNFα and IL-1β.

      Related collections

      Author and article information

      Journal
      Herbal Medicines Journal
      Lorestan University of Medical Sciences
      01 June 2017
      : 2
      : 2
      123d551092fa41ce9f29f12a36569a84
      10.22087/hmj.v0i0.613

      This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. This work is licensed under a Creative Commons license (CC-BY). However, the license permits any user to read, copy, redistribute and make derivative the material in any medium or format for any purpose, even commercially. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/

      Categories
      Pharmacy and materia medica
      RS1-441

      Comments

      Comment on this article