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Abstract Title:

Anti-inflammatory activity of patchouli alcohol isolated from Pogostemonis Herba in animal models.

Abstract Source:

Fitoterapia. 2011 Dec ;82(8):1295-301. Epub 2011 Sep 19. PMID: 21958968

Abstract Author(s):

Yu-Cui Li, Yan-Fang Xian, Siu-Po Ip, Zi-Ren Su, Ji-Yan Su, Jing-Jin He, Qing-Feng Xie, Xiao-Ping Lai, Zhi-Xiu Lin

Article Affiliation:

Yu-Cui Li

Abstract:

Pogostemonis Herba has long been used in traditional Chinese medicine for the treatment of inflammatory disorders. Patchouli alcohol (PA), a tricyclic sesquiterpene isolated from Pogostemonis Herba, is known to possess a variety of pharmacological activities. The present study aimed to investigate the in vivo anti-inflammatory effect of PA using two common inflammatory animal models i.e., xylene-induced ear edema in mice and carrageenan-induced paw edema in rats. The degree of edema in both inflammatory animals, as well as the protein and mRNA expression of some inflammatory mediators including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), prostaglandin E₂ (PGE₂) and nitric oxide (NO) in the hind paw of carrageenan-treated rats were measured. Results showed that PA (10-40 mg/kg) significantly inhibited the ear edema induced by xylene in mice and the paw edema induced by carrageenan in rats. In addition, treatment with PA (10-40 mg/kg) also dose-dependently decreased the production of TNF-α, IL-1β, PGE₂ and NO in the hind paw of carrageenan-treated rats. Furthermore, PA treatment also suppressed the mRNA expression of TNF-α, IL-1β, inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in the hind paw of carrageenan-treated rats. These results suggest that PA possesses potent anti-inflammatory activity, which may be mediated, at least in part, by down-regulating the mRNA expression of a panel of inflammatory mediators including TNF-α, IL-1β, iNOS and COX-2.

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