PMID- 33880028 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220422 IS - 1176-6328 (Print) IS - 1178-2021 (Electronic) IS - 1176-6328 (Linking) VI - 17 DP - 2021 TI - Electroacupuncture Ameliorates Depressive-Like Behaviors in Poststroke Rats via Activating the tPA/BDNF/TrkB Pathway. PG - 1057-1067 LID - 10.2147/NDT.S298540 [doi] AB - BACKGROUND: Electroacupuncture (EA) is a form of physical therapy that has been widely used in clinical practice in China. Post-stroke depression (PSD) is the most common neuropsychiatric complication after stroke. EA has been shown to have beneficial effects on PSD patients. However, the potential mechanism underlying the protective effects of EA on PSD remains unclear. Here, we investigated whether tissue plasminogen activator (tPA)/brain-derived neurotrophic factor (BDNF)/tyrosine kinase receptor B (TrkB) signaling pathway participates in the therapeutic effects of EA in a rat PSD model. METHODS: Experimental PSD was induced by combining middle cerebral artery occlusion (MCAO) with chronic unpredictable mild stimulation (CUMS) in adult male rats. Bodyweight gain, neurological score, sucrose preference, and open field test were determined at 0, 7, 14, and 35 days after completing MCAO. The protein expressions of tPA, precursor BDNF (proBDNF), mature BDNF (mBDNF), and TrkB were measured by immunofluorescence and Western blot analysis. The tPA inhibitor plasminogen inhibitor-1 (PAI-1) was used to explore whether tPA plays a crucial role in the protective effects of EA on PSD. RESULTS: Compared with the sham rats, the PSD rats showed decreased bodyweight, deteriorated neurological score, and significant depressive-like behaviors. EA remarkably reversed bodyweight loss, neurological deficit, and depressive-like behaviors in PSD rats. Immunofluorescence staining and Western blot analysis showed that PSD-induced decreased expression of tPA, mBDNF, and TrkB were prevented by EA. Furthermore, we found that the effects of EA against PSD-induced depressive-like behaviors were abolished by PAI-1, the specific inhibitor of tPA. CONCLUSION: Our results suggest that the improvement in depressive-like behaviors induced by EA is likely achieved via activation of the tPA/BDNF/TrkB pathway. CI - (c) 2021 Dong et al. FAU - Dong, Hao AU - Dong H AD - Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, Beijing, People's Republic of China. FAU - Qin, Yan-Qiang AU - Qin YQ AD - Treatment Center of TCM, Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, School of Rehabilitation Medicine, Capital Medical University, Beijing, People's Republic of China. FAU - Sun, Ying-Chun AU - Sun YC AD - Treatment Center of TCM, Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, School of Rehabilitation Medicine, Capital Medical University, Beijing, People's Republic of China. FAU - Yao, Hai-Jiang AU - Yao HJ AD - Treatment Center of TCM, Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, School of Rehabilitation Medicine, Capital Medical University, Beijing, People's Republic of China. FAU - Cheng, Xian-Kuan AU - Cheng XK AD - Treatment Center of TCM, Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, School of Rehabilitation Medicine, Capital Medical University, Beijing, People's Republic of China. FAU - Yu, Yan AU - Yu Y AD - Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, Beijing, People's Republic of China. FAU - Lu, Shou-Si AU - Lu SS AD - Beijing Bo'ai Hospital, China Rehabilitation Research Center, China Rehabilitation Science Institute, Beijing, People's Republic of China. LA - eng PT - Journal Article DEP - 20210413 PL - New Zealand TA - Neuropsychiatr Dis Treat JT - Neuropsychiatric disease and treatment JID - 101240304 PMC - PMC8053498 OTO - NOTNLM OT - chronic unpredictable mild stimulation OT - depressive-like behaviors OT - electroacupuncture OT - poststroke depression OT - tPA/BDNF/TrkB COIS- The authors report no conflicts of interest in this work. EDAT- 2021/04/22 06:00 MHDA- 2021/04/22 06:01 PMCR- 2021/04/13 CRDT- 2021/04/21 06:40 PHST- 2020/12/22 00:00 [received] PHST- 2021/03/22 00:00 [accepted] PHST- 2021/04/21 06:40 [entrez] PHST- 2021/04/22 06:00 [pubmed] PHST- 2021/04/22 06:01 [medline] PHST- 2021/04/13 00:00 [pmc-release] AID - 298540 [pii] AID - 10.2147/NDT.S298540 [doi] PST - epublish SO - Neuropsychiatr Dis Treat. 2021 Apr 13;17:1057-1067. doi: 10.2147/NDT.S298540. eCollection 2021.