Hair growth-promoting activity of hot water extract of Thuja orientalis

BMC Complementary and Alternative Medicine

Hye-Jin Park¹  Dong Ki Park²  Nan-nan Zhang¹ 

[1] Department of Bioscience and Biotechnology, Konkuk University, 1 Kwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea;Cell Activation Research Institute, Konkuk University, 1 Hwayang-dong, Kwangjin-gu, Seoul 143-701, Republic of Korea

关键词: Thuja orientalis;    Sonic hedgehog (Shh);    Hair growth;    Hair follicles;    β-catenin;    Anagen;   

Others  :  1231167
DOI  :  10.1186/1472-6882-13-9

 received in 2012-05-25, accepted in 2012-12-19,  发布年份 2013

【 摘 要 】

Background

Thuja orientalis has been traditionally used to treat patients who suffer from baldness and hair loss in East Asia. The present study sought to investigate the hair growth-promoting activity of T. orientalis hot water extract and the underlying mechanism of action.

Methods

After T. orientalis extract was topically applied to the shaved dorsal skin of telogenic C57BL/6 N mice, the histomorphometric analysis was employed to study induction of the hair follicle cycle. To determine the effect of T. orientalis extract on the telogen to anagen transition, the protein expression levels of β-catenin and Sonic hedgehog (Shh) in hair follicles were determined by immunohistochemistry.

Results

We observed that T. orientalis extract promoted hair growth by inducing the anagen phase in telogenic C57BL/6 N mice. Specifically, the histomorphometric analysis data indicates that topical application of T. orientalis extract induced an earlier anagen phase and prolonged the mature anagen phase, in contrast to either the control or 1% minoxidil-treated group. We also observed increases in both the number and size of hair follicles of the T. orientalis extract-treated group. Moreover, the immunohistochemical analysis reveals earlier induction of β-catenin and Shh proteins in hair follicles of the T. orientalis extract-treated group, compared to the control or 1% minoxidil-treated group.

Conclusion

These results suggest that T. orientalis extract promotes hair growth by inducing the anagen phase in resting hair follicles and might therefore be a potential hair growth-promoting agent.

【 授权许可】

   
2013 Zhang et al.; licensee BioMed Central Ltd.

【 图 表 】

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