PMID- 29935237 OWN - NLM STAT- MEDLINE DCOM- 20190325 LR - 20220301 IS - 1532-8600 (Electronic) IS - 0026-0495 (Linking) VI - 87 DP - 2018 Oct TI - BDNF mimetic alleviates body weight gain in obese mice by enhancing mitochondrial biogenesis in skeletal muscle. PG - 113-122 LID - S0026-0495(18)30141-0 [pii] LID - 10.1016/j.metabol.2018.06.007 [doi] AB - BACKGROUND: 7,8-Dihydroxyflavone (7,8-DHF) is a small molecular weight compound that mimics the functions of brain-derived neurotrophic factor (BDNF). The current study aims to elucidate the molecular mechanism of 7,8-DHF-induced body weight regulation. METHODS: Obese female C57/BL6 (20-week-old) mice that have been fed with high-fat diet for 13 weeks were treated with 7,8-DHF for 9 weeks. Various biochemical and molecular analyses were performed to examine the signal transduction pathway, metabolite content, and mitochondrial mass in the animals. Moreover, systemic energy metabolism and insulin sensitivity were determined by indirect calorimetry and insulin/glucose-tolerance tests. We have also determined the metabolic actions of 7,8-DHF on cultured myotubes. RESULTS: 7,8-DHF treatment increased cellular respiration by promoting mitochondrial biogenesis in cultured skeletal muscle cells. In diet-induced obese mice, subsequent 7,8-DHF consumption triggered the AMPK/CREB/PGC-1alpha pathways to increase the muscular mitochondrial content. Systemic energy metabolism was thus elevated, which reduced the body weight gain in obese animals. Consequently, hyperlipidemia, hyperglycemia hyperinsulinemia, and ectopic lipid accumulation in skeletal muscle and liver of the obese animals were alleviated after 7,8-DHF treatment. Moreover, insulin sensitivity of the obese muscle was improved after 7,8-DHF consumption. CONCLUSION: 7,8-DHF treatment increases muscular mitochondrial respiration and systemic energy expenditure, which alleviates the body weight gain and partially reverse the metabolic abnormalities induced by obesity. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Wood, John AU - Wood J AD - Department of Physiology, the University of Oklahoma Health Sciences Center, Oklahoma City, USA. FAU - Tse, Margaret Chui Ling AU - Tse MCL AD - School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, China. FAU - Yang, Xiuying AU - Yang X AD - State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica of Peking Union Medical College, Beijing, China. FAU - Brobst, Daniel AU - Brobst D AD - Department of Physiology, the University of Oklahoma Health Sciences Center, Oklahoma City, USA. FAU - Liu, Zhixue AU - Liu Z AD - Department of Physiology, the University of Oklahoma Health Sciences Center, Oklahoma City, USA. FAU - Pang, Brian Pak Shing AU - Pang BPS AD - School of Biological Sciences, the University of Hong Kong, Hong Kong, SAR, China. FAU - Chan, Wing Suen AU - Chan WS AD - School of Biological Sciences, the University of Hong Kong, Hong Kong, SAR, China. FAU - Zaw, Aung Moe AU - Zaw AM AD - School of Biological Sciences, the University of Hong Kong, Hong Kong, SAR, China. FAU - Chow, Billy K C AU - Chow BKC AD - School of Biological Sciences, the University of Hong Kong, Hong Kong, SAR, China. FAU - Ye, Keqiang AU - Ye K AD - Department of Pathology, Emory University School of Medicine, Atlanta, USA. FAU - Lee, Chi Wai AU - Lee CW AD - School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, China. FAU - Chan, Chi Bun AU - Chan CB AD - School of Biological Sciences, the University of Hong Kong, Hong Kong, SAR, China; State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, SAR, China. Electronic address: chancb@hku.hk. LA - eng GR - U2C DK093000/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180620 PL - United States TA - Metabolism JT - Metabolism: clinical and experimental JID - 0375267 RN - 0 (6,7-dihydroxyflavone) RN - 0 (Anti-Obesity Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Flavones) SB - IM MH - Adipocytes/drug effects/ultrastructure MH - Animals MH - Anti-Obesity Agents/*pharmacology MH - *Biomimetics MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Diet, High-Fat MH - Energy Metabolism/drug effects MH - Female MH - Flavones/*pharmacology MH - Glucose Tolerance Test MH - Insulin Resistance MH - Mice MH - Mice, Inbred C57BL MH - Mice, Obese MH - Mitochondria, Muscle/*drug effects MH - Muscle, Skeletal/*drug effects MH - Obesity/*drug therapy MH - Organelle Biogenesis MH - Signal Transduction/drug effects MH - Weight Gain/*drug effects OTO - NOTNLM OT - 7,8-Dihydroxyflavone OT - Mitochondrial OT - Obesity OT - Skeletal muscle EDAT- 2018/06/24 06:00 MHDA- 2019/03/26 06:00 CRDT- 2018/06/24 06:00 PHST- 2018/01/29 00:00 [received] PHST- 2018/05/14 00:00 [revised] PHST- 2018/06/17 00:00 [accepted] PHST- 2018/06/24 06:00 [pubmed] PHST- 2019/03/26 06:00 [medline] PHST- 2018/06/24 06:00 [entrez] AID - S0026-0495(18)30141-0 [pii] AID - 10.1016/j.metabol.2018.06.007 [doi] PST - ppublish SO - Metabolism. 2018 Oct;87:113-122. doi: 10.1016/j.metabol.2018.06.007. Epub 2018 Jun 20.