PMID- 30280285 OWN - NLM STAT- MEDLINE DCOM- 20190606 LR - 20211204 IS - 1573-7365 (Electronic) IS - 0885-7490 (Linking) VI - 34 IP - 1 DP - 2019 Feb TI - Gallic acid activates hippocampal BDNF-Akt-mTOR signaling in chronic mild stress. PG - 93-101 LID - 10.1007/s11011-018-0328-x [doi] AB - Gallic acid (3,4,5-trihydroxybenzoic acid) is a naturally occurring polyphenolic compound. Previous study has shown that gallic acid possessed significant antidepressant-like activity in mice, which was partly mediated by increasing serotonin and catecholamine levels. The main aim of the present study is to investigate the possible effects of gallic acid on brain-derived neurotrophic factor (BDNF) signaling activation. Mice were exposed to chronic mild stress (CMS) and orally administrated with gallic acid for four weeks. The behavioral results showed that gallic acid not only reversed the decreased sucrose preference, but also attenuated the increased immobility time. In addition, gallic acid promoted both the BDNF and p-TrkB levels in the hippocampus induced by CMS. Moreover, the results also demonstrated that the inactivated Akt-mTOR signaling pathway, as well as its downstream effectors induced by CMS was activated again by gallic acid. Last, immunofluorescence detection indicated that gallic acid reversed the newborn neurons inhibition in the dentate gyrus by CMS. In conclusion, these results show that the activation of the hippocampal BDNF-Akt-mTOR signaling is involved in the antidepressant-like effects of gallic acid. FAU - Zhu, Ji-Xiao AU - Zhu JX AD - Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, People's Republic of China. FAU - Shan, Jia-Ling AU - Shan JL AD - Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, People's Republic of China. FAU - Hu, Wei-Qiong AU - Hu WQ AD - Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, People's Republic of China. FAU - Zeng, Jin-Xiang AU - Zeng JX AD - Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, People's Republic of China. FAU - Shu, Ji-Cheng AU - Shu JC AD - Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, People's Republic of China. jxutcm_zjx@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181003 PL - United States TA - Metab Brain Dis JT - Metabolic brain disease JID - 8610370 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 632XD903SP (Gallic Acid) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Disease Models, Animal MH - Gallic Acid/*pharmacology MH - Hippocampus/*drug effects/metabolism MH - Mice MH - Neurons/drug effects/metabolism MH - Proto-Oncogene Proteins c-akt/*metabolism MH - Signal Transduction/*drug effects MH - Stress, Psychological/*metabolism MH - TOR Serine-Threonine Kinases OTO - NOTNLM OT - Brain-derived neurotrophic factor (BDNF) OT - Chronic mild stress (CMS) OT - Gallic acid EDAT- 2018/10/04 06:00 MHDA- 2019/06/07 06:00 CRDT- 2018/10/04 06:00 PHST- 2018/08/09 00:00 [received] PHST- 2018/09/27 00:00 [accepted] PHST- 2018/10/04 06:00 [pubmed] PHST- 2019/06/07 06:00 [medline] PHST- 2018/10/04 06:00 [entrez] AID - 10.1007/s11011-018-0328-x [pii] AID - 10.1007/s11011-018-0328-x [doi] PST - ppublish SO - Metab Brain Dis. 2019 Feb;34(1):93-101. doi: 10.1007/s11011-018-0328-x. Epub 2018 Oct 3.