Journal
FUNDAMENTAL & CLINICAL PHARMACOLOGY
Volume 28, Issue 4, Pages 455-464Publisher
WILEY
DOI: 10.1111/fcp.12049
Keywords
anti-inflammatory; cytokine; oxidative stress; phytol
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Studies have shown that diterpenes have anti-inflammatory and redox-protective pharmacological activities. The present study aimed to investigate the anti-inflammatory properties of phytol, a diterpene alcohol, in a mouse model of acute inflammation, and phytol effect on leukocyte recruitment, cytokines levels, and oxidative stress. The anti-inflammatory activities of phytol were assessed by measuring paw edema induced by different inflammatory agents (e. g., lambda-carrageenan, compound 48/80, histamine, serotonin, bradykinin, and prostaglandin E-2 [PGE(2)]), myeloperoxidase (MPO) activity, peritonitis model and cytokine levels. Further, oxidative stress was evaluated by determining glutathione (GSH) levels and malondialdehyde (MDA) concentration. The results showed that phytol (7.5, 25, 50, and 75 mg/kg) significantly reduced carrageenan-induced paw edema, in a dose-dependent manner. In addition, phytol (75 mg/kg) inhibited compound 48/80-, histamine-, serotonin-, bradykinin-and PGE(2)-induced paw edema. It also inhibited the recruitment of total leukocytes and neutrophils; decreased MPO activity, tumor necrosis factor-alpha (TNF-alpha) and interleukin-1 beta (IL-1 beta) levels, and MDA concentration; and increased GSH levels during carrageenan-induced acute inflammation. These results suggest that phytol attenuates the inflammatory response by inhibiting neutrophil migration that is partly caused by reduction in IL-1 beta and TNF-alpha levels and oxidative stress.
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