[Effects of ginsenoside Rg1 on expression of insulin-like growth factor-1 in brain of rats with brain contusion].

Zhong Xi Yi Jie He Xue Bao

Department of Forensic Pathology, West China College of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan Province 610041, China.

Published: September 2008

Objective: To study the effects of ginsenoside Rg1 on the expression of insulin-like growth factor-1 (IGF-1) in the brain of rats after the experimental brain contusion.

Methods: A total of twenty-six Wistar rats were randomly divided into normal control group (n=2), untreated group (n=8) and ginsenoside Rg1 group (n=16). Brain injuries were induced in rats by a mechanical striking device. The brain tissues were extracted at different times after brain injury (6th hour, 12th hour, 2nd day, 6th day), then the expression of IGF-1 in brain tissue was examined by immunohistochemical method.

Results: In comparison with the normal control group, the expression of IGF-1 in the brain tissues was increased in the untreated group after the brain contusion (P<0.05). The expression of IGF-1 in brain tissues in ginsenoside Rg1 group was significantly increased as compared with the untreated group (P<0.05).

Conclusion: Ginsenoside Rg1 enhances the recovery of the contused brain through increasing the expression of IGF-1.

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http://dx.doi.org/10.3736/jcim20080907DOI Listing

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