title: Functional relevance of genetic variations of endothelial nitric oxide synthase and vascular endothelial growth factor in diabetic coronary microvessel dysfunction.
abstract: The prevalence of type 1 diabetes (T1D) is increasing worldwide and is associated with significant microvessel complications, of which nephropathy, retinopathy and neuropathy are the most commonly studied. Although clinically evident microvascular complications of diabetes are rarely seen in childhood, early vascular abnormalities develop during childhood and accelerate during puberty. Vascular endothelial growth factor (VEGF) is a major mediator of angiogenesis, which is regulated by endothelial nitric oxide synthase (NOS3) at several levels. Together, VEGF and NOS3 play an important role in the pathogenesis of the microvascular complications of diabetes. Genetic variations in NOS3 and VEGF critically regulate endothelial survival and function and increase the susceptibility of patients to develop severe microvessel complications. Identification of the risk factors for and improved understanding of the subclinical signs of these diabetic microvascular complications will enable implementation of therapeutic strategies, potentially changing the course of vascular complications and improving the prognosis of children, adolescents and young adults with diabetes. Moreover, early detection of these variations may have a prognostic value or may suggest interventional approaches to regulate these proteins in patients with diabetes.
authors: Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia. mandar.joshi@bakeridi.edu.au
authors: Mandar S
authors: MS
authors: Joshi
authors: Philip J
authors: PJ
authors: Berger
authors: David M
authors: DM
authors: Kaye
authors: James T
authors: JT
authors: Pearson
authors: John A
authors: JA
authors: Bauer
authors: Rebecca H
authors: RH
authors: Ritchie
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003331:Coronary Vessels / Q000503:physiopathology*; D003922:Diabetes Mellitus, Type 1 / Q000150:complications* / Q000235:genetics* / Q000503:physiopathology; D003925:Diabetic Angiopathies / Q000235:genetics* / Q000503:physiopathology; D020022:Genetic Predisposition to Disease; D006801:Humans; D055806:Microvessels / Q000503:physiopathology; D052250:Nitric Oxide Synthase Type III / Q000235:genetics*; D011110:Polymorphism, Genetic; D042461:Vascular Endothelial Growth Factor A / Q000235:genetics*; D055815:Young Adult
chemical_list: C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; C496314:NOS3 protein, human; D052250:Nitric Oxide Synthase Type III