Pharmacodynamic analysis and related mechanisms of pseudolaric acid B on contact hypersensitivity
10.3969/j.issn.1001-1978.2014.11.015
- VernacularTitle:土槿乙酸抑制接触性超敏反应的药效学研究及机制探讨
- Author:
Tan LI
;
Xiaoqing DONG
;
Yiteng WANG
;
Xiaoguang LIU
;
Wei WANG
;
Xin ZHOU
;
Hong CHEN
- Publication Type:Journal Article
- Keywords:
pseudolaric acid B;
contact hypersensitiv-ity;
pharmacodynamics;
inflammation;
PPARγ;
Akt;
signaling pathway
- From:
Chinese Pharmacological Bulletin
2014;(11):1552-1556,1557
- CountryChina
- Language:Chinese
-
Abstract:
Aim To investigate the pharmacodynamic experiment and molecular mechanisms of a diterpenoid from cortex pseudolaricis, pseudolaric acid B ( PB ) , on immunoregulation. Methods The mouse models of contact hypersensitivity ( CHS) were induced by 2,4-dinitrofluorobenzene ( DNFB ) . Then , the ear swelling and spleen index were measured after administered o-rally with PB. The pathological changes such as in-flammatory cell infiltration in ear skin were observed by hematoxylin and eosin ( HE ) staining. Besides, the expression of peroxisome proliferater-activated receptorγ ( PPARγ) and the phosphorylation of Akt were ana-lyzed by Western blot. The activity of PPARγ was fur-ther detected by luciferase reporter gene assay. Results The results showed that PB could both alleviate the ear thickness, inhibit the spleen index, and reduce the inflammatory degree of their ear skin, which might be involved in inducing PPARγexpression and activation, associated with suppressing Akt signaling pathway. Conclusion It is suggested that PB might regulate PPARγ-related Akt pathway, which indicates the pos-sibility of developing PB as a novel immunoregulation agent for treating inflammatory-immune disease.
