PMID- 30135489 OWN - NLM STAT- MEDLINE DCOM- 20191126 LR - 20191126 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 8 IP - 1 DP - 2018 Aug 22 TI - Improvement of vascular dysfunction by argirein through inhibiting endothelial cell apoptosis associated with ET-1/Nox4 signal pathway in diabetic rats. PG - 12620 LID - 10.1038/s41598-018-30386-w [doi] LID - 12620 AB - Endothelial cell apoptosis plays an important role in the pathophysiological mechanism of vascular complications in type 2 diabetes mellitus (T2DM). Argirein, a new synthetic compound was demonstrated to inactivate NADPH oxidase to alleviate cardiac dysfunction in T2DM. Here, we investigated whether argirein medication attenuated the vascular dysfunction in T2DM by inhibiting endothelial cell apoptosis which was associated with NADPH oxidase. The rat aortic endothelial cells (RAECs) were incubated with glucose (30 mM) for 48 hour in vitro. It was shown that high glucose significantly increased the protein expression of BAX (Bcl-2 Associated X protein) and Caspase-3 and decreased Bcl2 (B-Cell Leukemia/Lymphoma 2) protein level in RAECs, which was normalized by argirein medication. The annexin V-FITC bound cell percentage and DNA fragments in agarose electrophoresis were markedly suppressed by argirein to confirm the anti-apoptotic property of argirein in RAECs. Furthermore, we found that argirein blocked the endothelin (ET)-1/Nox4 signal-dependent superoxide (O(2)(-.)) generation, which regulated endothelial cell apoptosis in RAECs. In vivo, argirein intervention relieved the vasodilatory response to acetylcholine and restored the expressions of Nox4 and BAX in the aorta endothelium of high-fat diet (HFD)-fed rats following streptozocin (STZ) injection. For the first time, we demonstrated that argirein could inhibit vascular endothelial cell apoptosis, which was attributed to blocking ET-1/Nox4 signal-dependent O(2)(-) generation in RAECs. This current study revealed the therapeutic effects of argirein to prevent the vascular complication in T2DM through inhibiting endothelial cell apoptosis which was associated with the anti-oxidative property of argirein. FAU - Su, Jie AU - Su J AD - Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. FAU - An, Xing-Rong AU - An XR AD - Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. FAU - Li, Qing AU - Li Q AD - Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. FAU - Li, Xiao-Xue AU - Li XX AD - Department of Pathology, Medical School of Southeast University, Nanjing, 210009, China. FAU - Cong, Xiao-Dong AU - Cong XD AD - School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, 311400, China. FAU - Xu, Ming AU - Xu M AD - Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. mingxu@cpu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180822 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Anthraquinones) RN - 0 (Drug Combinations) RN - 0 (Endothelin-1) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Reactive Oxygen Species) RN - 0 (argirein) RN - 0 (bcl-2-Associated X Protein) RN - 5W494URQ81 (Streptozocin) RN - 94ZLA3W45F (Arginine) RN - EC 1.6.3.- (NADPH Oxidase 4) RN - EC 1.6.3.- (NADPH Oxidases) RN - EC 1.6.3.- (Nox4 protein, rat) RN - EC 3.4.22.- (Caspase 3) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Animals MH - Anthraquinones/*pharmacology MH - Aorta MH - Apoptosis/drug effects MH - Arginine/*pharmacology MH - Caspase 3/metabolism MH - Diabetes Mellitus, Experimental/drug therapy/pathology MH - Drug Combinations MH - Endothelial Cells/drug effects/metabolism MH - Endothelin-1/*metabolism MH - Endothelium, Vascular/metabolism MH - Glucose/metabolism MH - Male MH - NADPH Oxidase 4/*metabolism MH - NADPH Oxidases/drug effects/metabolism MH - Proto-Oncogene Proteins c-bcl-2/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reactive Oxygen Species/metabolism MH - Signal Transduction/drug effects MH - Streptozocin/pharmacology MH - bcl-2-Associated X Protein/metabolism PMC - PMC6105644 COIS- The authors declare no competing interests. EDAT- 2018/08/24 06:00 MHDA- 2019/11/27 06:00 PMCR- 2018/08/22 CRDT- 2018/08/24 06:00 PHST- 2018/04/17 00:00 [received] PHST- 2018/07/24 00:00 [accepted] PHST- 2018/08/24 06:00 [entrez] PHST- 2018/08/24 06:00 [pubmed] PHST- 2019/11/27 06:00 [medline] PHST- 2018/08/22 00:00 [pmc-release] AID - 10.1038/s41598-018-30386-w [pii] AID - 30386 [pii] AID - 10.1038/s41598-018-30386-w [doi] PST - epublish SO - Sci Rep. 2018 Aug 22;8(1):12620. doi: 10.1038/s41598-018-30386-w.