The Anti-inflammatory Effects of Yunnan Baiyao Are Involved in Regulation of the Phospholipase A2/arachidonic Acid Metabolites Pathways in Acute Inflammation Rat Model

Overview

Journal Mol Med Rep

Specialty Molecular Biology

Date 2017 Aug 3

PMID 28765972

Citations 14

Authors

Xiaobin Ren

Mingzhu Zhang

Lingxiang Chen

Wanli Zhang

Yu Huang

Huazhen Luo

Ling Li

Hongbing He

Affiliations

Soon will be listed here.

Abstract

The traditional Chinese medicine Yunnan Baiyao (YNB) has been reported to possess anti‑inflammatory properties, however its mechanism of action remains unclear. It was previously reported that YNB ameliorated depression of arachidonic acid (AA) levels in a rat model of collagen-induced arthritis. In the current study, the capacity of YNB to ameliorate inflammation was compared in carrageenan‑induced and AA‑induced acute inflammation of the rat paw with celecoxib and mizolastine, respectively (n=24 per group). The capacity of YNB to affect the phospholipase A2 (PLA2)/AA pathway (using reverse transcription‑quantitative polymerase chain reaction) and release of inflammatory lipid mediators (by ELISA) were investigated. Celecoxib ameliorated carrageenan‑induced paw edema, and mizolastine ameliorated AA‑induced rat paw edema. YNB alleviated paw edema and inhibited inflammatory cell infiltration in the two models. YNB inhibited production of 5‑LOX AA metabolite leukotriene B4 (LTB4), and suppressed expression of 5‑LOX, cytosolic PLA2 (cPLA2), 5‑LOX‑activating protein, and LTB4 receptor mRNA in the AA‑induced inflammation model (P<0.05). YNB Inhibited the production of the COX‑2 AA metabolite prostaglandin E2 (PGE2) and suppressed expression of COX‑2, cPLA2, PGE2 mRNA in the carrageenan‑induced inflammation mode (P<0.05). Taken together, the data suggest that modulation of COX and LOX pathways in AA metabolism represent a novel anti-inflammatory mechanism of YNB.

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