The effects of acupuncture stimulation at PC6 (Neiguan) on chronic mild stress-induced...
In the present study, the effects of acupuncture on the behavioral and physiological responses induced by chronic mild stress (CMS) were evaluated. Sprague-Dawley rats were exposed to a variety of chronic unpredictable, mild stressors for 8 weeks. The effects of acupuncture on stress-induced anxiety and anhedonia were investigated using the elevated plus maze (EPM) and sucrose intake test. In addition, c-fos expression, as an early neuronal marker in the brain was also examined utilizing Fos-like immunohistochemistry (FLI). CMS rats significantly reduced the consumption of sucrose intake and latency in the open arms of the EPM, and gained body weight more slowly, compared to non-stressed normal rats. Exposure to CMS also significantly increased FLI in the paraventricular nucleus (PVN) of the hypothalamus. Acupuncture stimulation at point PC6 on the pericardium channels (3 min), but not at other point (TE5), restored stress-induced decrease in the latency in the open arms and significantly attenuated FLI in the PVN produced by CMS. Acupuncture stimulation also tended to restore stress-induced decrease in the sucrose intake. The present results demonstrated that acupuncture was effective in restoring CMS-related biochemical and behavioral impairments such as anxiety and anhedonia and that acupuncture point was more effective than non-acupuncture point. These results suggest that acupuncture has a therapeutic effect on chronic stress-related diseases such as depression and anxiety.
Neurosci Lett. 2009 Aug 21;460(1):56-60. Epub 2009 May 7. Kim H, Park HJ, Han SM, Hahm DH, Lee HJ, Kim KS, Shim I. Division of Brain Disease, Center for Biomedical Science, National Institute of Health, Seoul, 122-701 Republic of Korea.
Posted: 05/21/2010
This article provided by The International Hypnosis Research Institute.
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