The A640G CYBA polymorphism associates with subclinical atherosclerosis in diabetes

Oxidative stress is implicated in diabetes. The NADPH oxidases are the main source of superoxide in phagocytic and vascular cells, and p22phox is a key subunit. Genetic variants of CYBA, the human p22phox gene, associate with cardiovascular disease. We investigated the association of the A640G polym...

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Detalles Bibliográficos
Autores: Moreno-Zulategui, M.U. (María de Ujue)|||/items/c970940e-b812-4c54-b9ee-26a5e0b78ec7, San-José-Enériz, G. (Gorka)|||/items/362ac8c3-5d50-4383-9fc1-7abbed048387, Fortuño, A. (Ana)|||/items/2324831f-71b3-4d1b-afc1-594e4e1bc0c9, Miguel-Carrasco, J.L. (José Luis)|||/items/626cda34-5a0d-43e1-a34e-33d5f8c77fa6, Beloqui, O. (Óscar)|||/items/87d04a14-2d74-4221-8a57-12550777420d, Diez-Martinez, J. (Javier)|||/items/4f3a0e43-12bf-403d-9dc7-31fab0d11d41, Zalba-Goñi, G. (Guillermo)|||/items/71410fa2-baa5-4efc-bce7-14b4b0e23802
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad de Navarra
Repositorio:Dadun. Depósito Académico Digital de la Universidad de Navarra
Idioma:inglés
OAI Identifier:oai:dadun.unav.edu:10171/17937
Acceso en línea:https://hdl.handle.net/10171/17937
Access Level:acceso abierto
Palabra clave:Atherosclerosis
Diabetes
Intima-Media Thickness
NADPH oxidase
Oxidative stress
A640G polymorphism
Descripción
Sumario:Oxidative stress is implicated in diabetes. The NADPH oxidases are the main source of superoxide in phagocytic and vascular cells, and p22phox is a key subunit. Genetic variants of CYBA, the human p22phox gene, associate with cardiovascular disease. We investigated the association of the A640G polymorphism with diabetes and its impact on phagocytic NADPH oxidase-dependent superoxide production and subclinical atherosclerosis. We studied 1212 subjects in which clinical parameters including carotid intima-media thickness (cIMT) were assessed. The A640G polymorphism was genotyped by TaqMan probes. In 496 subjects, the NADPH oxidase-dependent superoxide production in peripheral blood mononuclear cells was assessed by chemiluminescence. The GG genotype prevalence was significantly higher in type 2 diabetic patients than in non-diabetic subjects. Peripheral blood mononuclear cells from diabetic GG patients presented higher NADPH oxidase-dependent superoxide production than those of diabetic AA/AG patients. Within the diabetic group, GG patients presented higher cIMT levels than AA/AG patients. The A640G CYBA polymorphism may be a marker of oxidative stress risk and may be indicative of subclinical atherosclerosis in type 2 diabetes.

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