PMID- 34983570 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220108 IS - 1749-8546 (Print) IS - 1749-8546 (Electronic) IS - 1749-8546 (Linking) VI - 17 IP - 1 DP - 2022 Jan 5 TI - Echinacoside exhibits antidepressant-like effects through AMPAR-Akt/ERK-mTOR pathway stimulation and BDNF expression in mice. PG - 9 LID - 10.1186/s13020-021-00549-5 [doi] LID - 9 AB - BACKGROUND: Several natural products have been demonstrated to be effective in the treatment of depressive disorders. Echinacoside, a naturally occurring phenol extracted from Cistanche tubulosa, Echinacea angustifolia, and Cistanche spp, has a wide range of physiological effects, such as antioxidation, neuroprotection, anti-inflammatory, and immunoregulation, which are closely related to depression. In addition, echinacoside can activate protein kinase B (Akt), extracellular signal-regulated kinase (ERK), and brain-derived neurotrophic factor (BDNF) in the brain. A key downstream event of the Akt, ERK, and BDNF signaling pathways, namely mechanistic target of rapamycin (mTOR) signaling, plays a crucial role in generating an rapid antidepressant effect. Thus, echinacoside is a promising therapeutic agent for depression. However, research regarding the role of echinacoside in antidepressant effect and brain mTOR activation remains lacking. MATERIALS AND METHODS: The forced swimming test and Western blot analysis in C57BL/6 mice was used to investigate the antidepressant-like activities of echinacoside and the underlying mechanism involved inalpha-amino3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR)-Akt/ERK-mTOR pathway. RESULTS: We confirmed the suggestions by previous reports that echinacoside activates Akt/ERK signaling and further demonstrated that echinacoside could provide antidepressant-like effects in mice via the activation of AMPAR-Akt/ERK-mTOR pathway in the hippocampus. CONCLUSIONS: To the best of our knowledge, our study is the first to reveal that echinacoside is a potential treatment for depressive disorders. Moreover, the present study suggests a mechanism for the neuroprotective effect of echinacoside. CI - (c) 2022. The Author(s). FAU - Chuang, Han-Wen AU - Chuang HW AD - Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan. FAU - Wang, Tse-Yen AU - Wang TY AD - Department of Post-baccalaureate Chinese Medicine, China Medical University, Taichung, Taiwan. FAU - Huang, Chih-Chia AU - Huang CC AUID- ORCID: 0000-0001-8703-1878 AD - Tsaotun Psychiatric Center, Ministry of Health and Welfare, Nantou, Taiwan. chihchiahuang@yahoo.com.tw. AD - Department of Psychiatry, China Medical University, Taichung, Taiwan. chihchiahuang@yahoo.com.tw. AD - Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan. chihchiahuang@yahoo.com.tw. AD - Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan. chihchiahuang@yahoo.com.tw. FAU - Wei, I-Hua AU - Wei IH AD - Department of Anatomy, China Medical University, Taichung, Taiwan. ihwei@mail.cmu.edu.tw. LA - eng GR - TTPC-110018/Tsaotun Psychiatric Center, Ministry of Health and Welfare, Nantou, Taiwan/ GR - MOST 106-2314-B-039-029-MY3/ministry of science and technology, Taiwan/ GR - MOST 109-2314-B-039-040/ministry of science and technology, Taiwan/ GR - MOST 109-2320-B-039-046/ministry of science and technology, Taiwan/ GR - MOST 110-2320-B-039-037/ministry of science and technology, Taiwan/ GR - DMR-108-092 and DMR-109-101/China medical university hospital/ GR - CMU110-MF-87/China Medical University, Taiwan/ PT - Journal Article DEP - 20220105 PL - England TA - Chin Med JT - Chinese medicine JID - 101265109 PMC - PMC8728918 OTO - NOTNLM OT - AMPAR OT - Akt OT - Antidepressant OT - ERK OT - Echinacoside OT - mTOR COIS- The authors declare that they have no competing interests. EDAT- 2022/01/06 06:00 MHDA- 2022/01/06 06:01 PMCR- 2022/01/05 CRDT- 2022/01/05 05:41 PHST- 2021/07/29 00:00 [received] PHST- 2021/12/06 00:00 [accepted] PHST- 2022/01/05 05:41 [entrez] PHST- 2022/01/06 06:00 [pubmed] PHST- 2022/01/06 06:01 [medline] PHST- 2022/01/05 00:00 [pmc-release] AID - 10.1186/s13020-021-00549-5 [pii] AID - 549 [pii] AID - 10.1186/s13020-021-00549-5 [doi] PST - epublish SO - Chin Med. 2022 Jan 5;17(1):9. doi: 10.1186/s13020-021-00549-5.