Temporal effect of electroacupuncture on anxiety-like behaviors and c-Fos expression in the anterior cingulate cortex in a rat model of post-traumatic stress disorder.

08:00 EDT 13th August 2019 | BioPortfolio

Summary of "Temporal effect of electroacupuncture on anxiety-like behaviors and c-Fos expression in the anterior cingulate cortex in a rat model of post-traumatic stress disorder."

Post-traumatic stress disorder (PTSD) is a psychiatric disease which leads to a series of anxiety-like behaviors. In this study, we investigated the temporal effects of electroacupuncture (EA) at acupoint ST36 on anxiety-like behaviors and the expression of c-Fos in the anterior cingulate cortex (ACC) in a rat model of PTSD. PTSD was induced by a single prolonged stress procedure comprising three stages: restraint for 2 h, forced swim for 20 min, and pentobarbital sodium anesthesia. EA at acupoint ST36 was performed from 7:00-9:00 once a day for 7 consecutive days. Open field test (OFT) and elevated plus maze (EPM) test were used to assess the success of the model and evaluate anxiety-like behaviors. Immunohistochemistry was used to detect Fos-positive nuclei in the ACC. We observed that EA performed from 7:00-9:00 was associated with significantly more time spent in the center area during the OFT and in the open arm during the EPM, as well as lower corticosterone response compared with that of regular EA (P < 0.05). PTSD rats expressed significantly less c-Fos in the ACC. Timed EA significantly increased c-Fos expression in the ACC. The effect of timed EA acting on PTSD rats was linked to altered neuronal activation in the ACC. Compared to regular EA, timed EA exhibited superior therapeutic effects by attenuating anxiety-like behaviors in PTSD rats. These results emphasize the association between temporal parameters of EA manipulation and acupuncture effects. Timed acupuncture therapy may be a novel therapeutic application in the treatment of PTSD.


Journal Details

This article was published in the following journal.

Name: Neuroscience letters
ISSN: 1872-7972
Pages: 134432


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