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Nitric oxide system and diabetic nephropathy

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Nitric oxide system and diabetic nephropathy

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Título Nitric oxide system and diabetic nephropathy
Autor Dellaméa, Bruno Schmidt
Leitão, Cristiane Bauermann
Friedman, Rogério
Canani, Luis Henrique Santos
Abstract About 30% of patients with type 2 diabetes mellitus develop clinically overt nephropathy. Hyperglycemia is necessary, but not sufficient, to cause the renal damage that leads to kidney failure. Diabetic nephropathy (DN) is a multifactorial disorder that results from interaction between environmental and genetic factors. In the present article we will review the role of the nitric oxide synthase (NOS) in the pathogenesis of DN. Nitric oxide (NO) is a short-lived gaseous lipophilic molecule produced in almost all tissues, and it has three distinct genes that encode three NOS isoforms: neuronal (nNOS), inducible (iNOS) and endothelial (eNOS). The correct function of the endothelium depends on NO, participating in hemostasis control, vascular tone regulation, proliferation of vascular smooth muscle cells and blood pressure homeostasis, among other features. In the kidney, NO plays many different roles, including control of renal and glomerular hemodynamics. The net effect of NO in the kidney is to promote natriuresis and diuresis, along with renal adaptation to dietary salt intake. The eNOS gene has been considered a potential candidate gene for DN susceptibility. Three polymorphisms have been extensively researched: G894T missense mutation (rs1799983), a 27-bp repeat in intron 4, and the T786C single nucleotide polymorphism (SNP) in the promoter (rs2070744). However, the potential link between eNOS gene variants and the induction and progression of DN yielded contradictory results in the literature. In conclusion, NOS seems to be involve in the development and progression of DN. Despite the discrepant results of many studies, the eNOS gene is also a good candidate gene for DN.
Contido em Diabetology & metabolic syndrome. [London]. Vol. 6 (Feb. 2014), p. 17
Assunto Diabetes mellitus tipo 2
Nefropatias diabéticas
Óxido nítrico
Polimorfismo genético
[en] 4b/a
[en] Diabetes
[en] Diabetic nephropathy
[en] eNOS
[en] G894T
[en] NOS-3
[en] Polymorphism
[en] T786C
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/110276
Arquivos Descrição Formato
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