Nitroxyl: A Novel Strategy to Circumvent Diabetes Associated Impairments in Nitric Oxide Signaling

Frontiers in Pharmacology

John D. Horowitz¹  Barbara K. Kemp-Harper³  Rebecca H. Ritchie³  Owen L. Woodman⁴  Chengxue Qin⁴  Anida Velagic⁴ 

[1] Basil Hetzel Institute, Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA, Australia;Central Clinical School, Monash University, Melbourne, VIC, Australia;Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia;Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia;Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia;

关键词: nitric oxide;    diabetes;    type 2 diabetes;    cardiovascular disease;    nitroxyl;    HNO;   

DOI  :  10.3389/fphar.2020.00727

来源: DOAJ

【 摘 要 】

Diabetes is associated with an increased mortality risk due to cardiovascular complications. Hyperglycemia-induced oxidative stress underlies these complications, leading to an impairment in endogenous nitric oxide (NO•) generation, together with reductions in NO• bioavailability and NO• responsiveness in the vasculature, platelets and myocardium. The latter impairment of responsiveness to NO•, termed NO• resistance, compromises the ability of traditional NO•-based therapeutics to improve hemodynamic status during diabetes-associated cardiovascular emergencies, such as acute myocardial infarction. Whilst a number of agents can ameliorate (e.g. angiotensin converting enzyme [ACE] inhibitors, perhexiline, statins and insulin) or circumvent (e.g. nitrite and sGC activators) NO• resistance, nitroxyl (HNO) donors offer a novel opportunity to circumvent NO• resistance in diabetes. With a suite of vasoprotective properties and an ability to enhance cardiac inotropic and lusitropic responses, coupled with preserved efficacy in the setting of oxidative stress, HNO donors have intact therapeutic potential in the face of diminished NO• signaling. This review explores the major mechanisms by which hyperglycemia-induced oxidative stress drives NO• resistance, and the therapeutic potential of HNO donors to circumvent this to treat cardiovascular complications in type 2 diabetes mellitus.

【 授权许可】

Unknown