PMID- 30970521 OWN - NLM STAT- MEDLINE DCOM- 20190903 LR - 20190903 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 112 DP - 2019 Apr TI - Fenofibrate improves vascular endothelial function in diabetic mice. PG - 108722 LID - S0753-3322(18)32750-1 [pii] LID - 10.1016/j.biopha.2019.108722 [doi] AB - Microvascular and macrovascular complications are major causes of disability and death in diabetic patients. High levels of blood glucose sabotage the integrity of blood vessels and induce endothelial dysfunction. Fenofibrate is an agonist of peroxisome proliferator-activated receptor alpha and can reduce the incidence of cardiovascular events in diabetic patients. This study tested the hypothesis that fenofibrate could ameliorate endothelium-dependent vasodilation in diabetic mice and relieve high glucose-induced endothelial dysfunction via activating endothelial nitric oxide synthase (eNOS) and adenosine monophosphate-activated protein kinase (AMPK) phosphorylation. A streptozotocin (STZ)-induced diabetic model was established by intraperitoneal injection of STZ (dissolved in sodium citrate buffer) at a dose of 60 mg/kg for 5 consecutive days. Mice were administered fenofibrate (100 mg/kg/d, i.g.) for 14 days. The endothelial function of extracted mouse aortae was examined by evaluating acetylcholine induced endothelium-dependent relaxation combined with phenylephrine-induced vasoconstriction and sodium nitroprusside-induced endothelium-independent relaxation. Superoxide onion (O(2)(-)) was determined using dihydroethidium staining of aortae. Functions of mouse aortic endothelial cells (MAECs) were assessed, and expression levels of eNOS and AMPK were determined by Western blotting. Fenofibrate ameliorated the impaired endothelium-dependent relaxation in diabetic mice and decreased the level of intracellular O(2)- in diabetic mouse aortae. In-vitro, fenofibrate treatment improved the impaired function of MAECs, increased nitric oxide production, and decreased the O(2)- level, as well as activated eNOS and AMPK phosphorylation in cultured MAECs by high glucose. Fenofibrate could ameliorate endothelium-dependent vasodilation in diabetic mice and relieve high glucose-induced endothelial dysfunction, which was possibly related to the activation of eNOS and AMPK phosphorylation. CI - Copyright (c) 2019. Published by Elsevier Masson SAS. FAU - Xin, Rujuan AU - Xin R AD - Department of Pharmacy, Shanghai Skin Disease Hospital, Shanghai, 200443, China. FAU - An, Duopeng AU - An D AD - Department of Pharmacy, Shanghai Skin Disease Hospital, Shanghai, 200443, China. FAU - Li, Ying AU - Li Y AD - Department of Pharmacy, Shanghai Skin Disease Hospital, Shanghai, 200443, China. FAU - Fu, Jin AU - Fu J AD - Department of Pharmacy, Ninghai First Hospital, Zhejiang, 315600, China. FAU - Huang, Fang AU - Huang F AD - Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, 200072, China. Electronic address: hazel_huang@126.com. FAU - Zhu, Quangang AU - Zhu Q AD - Department of Pharmacy, Shanghai Skin Disease Hospital, Shanghai, 200443, China. Electronic address: qgzhu@126.com. LA - eng PT - Journal Article DEP - 20190227 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (PPAR alpha) RN - 31C4KY9ESH (Nitric Oxide) RN - 5W494URQ81 (Streptozocin) RN - IY9XDZ35W2 (Glucose) RN - U202363UOS (Fenofibrate) SB - IM MH - Animals MH - Aorta, Thoracic/drug effects/physiopathology MH - Diabetes Mellitus, Experimental/*drug therapy/physiopathology MH - Diabetic Angiopathies/physiopathology/*prevention & control MH - Endothelial Cells/drug effects/metabolism MH - Endothelium, Vascular/*drug effects/physiopathology MH - Fenofibrate/pharmacology/*therapeutic use MH - Glucose/pharmacology MH - Male MH - Mice, Inbred C57BL MH - Nitric Oxide/metabolism MH - PPAR alpha/agonists MH - Streptozocin MH - Vasoconstriction/*drug effects MH - Vasodilation/*drug effects OTO - NOTNLM OT - Diabetes OT - Endothelial dysfunction OT - Fenofibrate OT - Mouse aortic endothelial cells OT - eNOS EDAT- 2019/04/12 06:00 MHDA- 2019/09/04 06:00 CRDT- 2019/04/12 06:00 PHST- 2018/04/25 00:00 [received] PHST- 2019/02/14 00:00 [revised] PHST- 2019/02/21 00:00 [accepted] PHST- 2019/04/12 06:00 [entrez] PHST- 2019/04/12 06:00 [pubmed] PHST- 2019/09/04 06:00 [medline] AID - S0753-3322(18)32750-1 [pii] AID - 10.1016/j.biopha.2019.108722 [doi] PST - ppublish SO - Biomed Pharmacother. 2019 Apr;112:108722. doi: 10.1016/j.biopha.2019.108722. Epub 2019 Feb 27.