Repetitive Transcranial Magnetic Stimulation Ameliorates Anxiety-Like Behavior and Impaired Sensorimotor Gating in a Rat Model of Post-Traumatic Stress Disorder |
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| Authors: | Hua-ning Wang Yuan-han Bai Yun-chun Chen Rui-guo Zhang Huai-hai Wang Ya-hong Zhang Jing-li Gan Zheng-wu Peng Qing-rong Tan |
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| Institution: | 1Department of Psychiatry, Xijing Hospital, Fourth Military Medical University, Xi''an, 710032, China;2Department of Psychiatry, 91 Hospital of P. L. A., Jiaozuo, 454150, China;University of South Florida, UNITED STATES |
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| Abstract: | BackgroundRepetitive transcranial magnetic stimulation (rTMS) has been employed for decades as a non-pharmacologic treatment for post-traumatic stress disorder (PTSD). Although a link has been suggested between PTSD and impaired sensorimotor gating (SG), studies assessing the effects of rTMS against PTSD or PTSD with impaired SG are scarce.AimTo assess the benefit of rTMS in a rat model of PTSD.MethodsUsing a modified single prolonged stress (SPS&S) rat model of PTSD, behavioral parameters were acquired using open field test (OFT), elevated plus maze test (EPMT), and prepulse inhibition trial (PPI), with or without 7 days of high frequency (10Hz) rTMS treatment of SPS&S rats.ResultsAnxiety-like behavior, impaired SG and increased plasma level of cortisol were observed in SPS&S animals after stress for a prolonged time. Interestingly, rTMS administered immediately after stress prevented those impairment.ConclusionStress-induced anxiety-like behavior, increased plasma level of cortisol and impaired PPI occur after stress and high-frequency rTMS has the potential to ameliorate this behavior, suggesting that high frequency rTMS should be further evaluated for its use as a method for preventing PTSD. |
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