PMID- 37313582 OWN - NLM STAT- MEDLINE DCOM- 20230725 LR - 20230730 IS - 1097-4547 (Electronic) IS - 0360-4012 (Linking) VI - 101 IP - 9 DP - 2023 Sep TI - Transcranial direct current stimulation alleviates nociceptive behavior in male rats with neuropathic pain by regulating oxidative stress and reducing neuroinflammation. PG - 1457-1470 LID - 10.1002/jnr.25204 [doi] AB - Transcranial direct curent stimulation (tDCS) and trans-spinal direct current stimulation (tsDCS) are promising therapies for pain that can alter the excitability of neuronal activity in cerebral cortex. The aim of the study is to investigate the therapeutic effects of direct current stimulation (DCS) over the spinal cord and cerebral cortex on oxidative stress and neuroinflammation in rats with chronic constriction injury (CCI). Male Wistar rats were randomly divided into four experimental groups: Sham, CCI, CCI + tDCS and CCI + tsDCS. The neuropathic pain model was induced by using the CCI model. Rats with neuropathy were treated with cathodal tDCS and tsDCS stimulations consisting of 0.5 mA for 30 min a day for 7 days from day 8 onwards. Locomotor activity was measured by open-field test and nociceptive behavior was assessed by hot-plate, tail-flick and Randall-Selitto tests. Following the behavioral experiments, total oxidant capacity (TOC), total antioxidant capacity (TAC) and proinflammatory cytokine levels were evaluated in spinal cord and cerebral cortex tissues. The CCI model induced significant mechanical and thermal hyperalgesia. Nociceptive behaviors in rats with CCI were reversed by DCS treatment. Higher TOC and lower TAC levels were detected in the spinal cord and cerebral cortex tissues of the CCI rats compared to the control. tsDCS treatment amended oxidant/antioxidant status. Moreover, tsDCS modulated the central levels of Tumor necrosis factor-alpha (TNF-alpha), interleukin 1-beta (IL-1beta), IL-6 and IL-18. tsDCS stimulation showed better therapeutic effect on neuropathic pain by regulating oxidant/antioxidant levels and reducing neuroinflammation. DCS, especially at spinal level, may be a promising therapeutic strategy that can be used alone or in combination with other effective treatments for alleviating neuropathic pain. CI - (c) 2023 The Authors. Journal of Neuroscience Research published by Wiley Periodicals LLC. FAU - Akcay, Guven AU - Akcay G AD - Faculty of Medicine, Department of Biophysics, Hitit University, Corum, Turkey. FAU - Nemutlu Samur, Dilara AU - Nemutlu Samur D AD - Faculty of Medicine, Department of Pharmacology, Alanya Alaaddin Keykubat University, Antalya, Turkey. FAU - Derin, Narin AU - Derin N AD - Faculty of Medicine, Department of Biophysics, Akdeniz University, Antalya, Turkey. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230614 PL - United States TA - J Neurosci Res JT - Journal of neuroscience research JID - 7600111 RN - 0 (Antioxidants) RN - 0 (Oxidants) SB - IM MH - Rats MH - Male MH - Animals MH - *Transcranial Direct Current Stimulation MH - Rats, Wistar MH - Antioxidants/therapeutic use MH - Neuroinflammatory Diseases MH - Nociception MH - Sciatic Nerve MH - *Neuralgia/therapy/pathology MH - Hyperalgesia/drug therapy MH - Spinal Cord/pathology MH - Oxidative Stress MH - Oxidants/pharmacology/therapeutic use OTO - NOTNLM OT - chronic constriction injury OT - neuroinflammation OT - neuropathic pain OT - tDCS EDAT- 2023/06/14 06:42 MHDA- 2023/07/25 06:42 CRDT- 2023/06/14 04:01 PHST- 2023/03/30 00:00 [revised] PHST- 2023/01/22 00:00 [received] PHST- 2023/05/03 00:00 [accepted] PHST- 2023/07/25 06:42 [medline] PHST- 2023/06/14 06:42 [pubmed] PHST- 2023/06/14 04:01 [entrez] AID - 10.1002/jnr.25204 [doi] PST - ppublish SO - J Neurosci Res. 2023 Sep;101(9):1457-1470. doi: 10.1002/jnr.25204. Epub 2023 Jun 14.