PMID- 30459620 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220410 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 9 DP - 2018 TI - Metformin Modulates High Glucose-Incubated Human Umbilical Vein Endothelial Cells Proliferation and Apoptosis Through AMPK/CREB/BDNF Pathway. PG - 1266 LID - 10.3389/fphar.2018.01266 [doi] LID - 1266 AB - Cardiovascular disease (CVD) is a leading cause of mortality and morbidity among patients with diabetes. Endothelial dysfunction is an early physiological event in CVD. Metformin, a common oral antihyperglycemic agent, has been demonstrated to directly affect endothelial cell function. Brain-derived neurotrophic factor (BDNF), originally discovered in the brain as a neurotrophin, has also been reported to play a protective role in the cardiovascular system. In our study, we demonstrated that high glucose (HG) reduced cell proliferation and induced cell apoptosis via changes in BDNF expression and that metformin reversed the effects of HG injury by upregulating BDNF expression. Furthermore, we found that cyclic AMP response element binding (CREB) phosphorylation was reduced in HG-treated human umbilical vein endothelial cells (HUVECs), and this effect was reversed by the metformin treatment. However, the metformin effect on BDNF levels in HG-incubated HUVECs was blocked by a CREB inhibitor, which indicated that BDNF expression is regulated by metformin through CREB activation. In addition, we found that adenosine monophosphate-activated protein kinase (AMPK) activation is involved in CREB/BDNF regulation in HG-incubated HUVECs treated with metformin and that an AMPK inhibitor impaired the protective effects of metformin on HG-treated HUVECs. In conclusion, this study demonstrated that metformin affects cell proliferation and apoptosis via the AMPK/CREB/BDNF pathway in HG-incubated HUVECs. FAU - Han, Xiqiong AU - Han X AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Wang, Bilei AU - Wang B AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Sun, Yuning AU - Sun Y AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Huang, Jia AU - Huang J AD - Department of Cardiology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China. FAU - Wang, Xin AU - Wang X AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Ma, Wenqi AU - Ma W AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Zhu, Yi AU - Zhu Y AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Xu, Rongfeng AU - Xu R AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Jin, Hong AU - Jin H AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. FAU - Liu, Naifeng AU - Liu N AD - Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China. LA - eng PT - Journal Article DEP - 20181106 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 PMC - PMC6232387 OTO - NOTNLM OT - AMPK OT - BDNF OT - CREB OT - HUVECs OT - diabetes mellitus OT - metformin EDAT- 2018/11/22 06:00 MHDA- 2018/11/22 06:01 PMCR- 2018/11/06 CRDT- 2018/11/22 06:00 PHST- 2018/08/07 00:00 [received] PHST- 2018/10/17 00:00 [accepted] PHST- 2018/11/22 06:00 [entrez] PHST- 2018/11/22 06:00 [pubmed] PHST- 2018/11/22 06:01 [medline] PHST- 2018/11/06 00:00 [pmc-release] AID - 10.3389/fphar.2018.01266 [doi] PST - epublish SO - Front Pharmacol. 2018 Nov 6;9:1266. doi: 10.3389/fphar.2018.01266. eCollection 2018.