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Arq. bras. endocrinol. metab ; 52(7): 1096-1105, out. 2008. ilus, tab
Article in Portuguese | LILACS | ID: lil-499719

ABSTRACT

O diabetes melito e suas complicações apresentam origem multifatorial. Mecanismos bioquímicos e patológicos estão associados com hiperglicemia crônica no diabetes e o aumento do estresse oxidativo tem sido postulado com papel central nestas desordens. Evidências sugerem que a lesão celular oxidativa causada pelos radicais livres contribuem para o desenvolvimento das complicações no diabetes tipo 1 (DM1) e a diminuição das defesas antioxidantes (enzimáticas e não-enzimáticas) parecem correlacionar-se com a gravidade das alterações patológicas no DM1. Nesta revisão, relata-se como o estresse oxidativo pode exercer efeitos deletérios no diabetes e são apresentadas as opções terapêuticas em estudo para modulação da injúria vascular.


Diabetic complications appear to be multifactorial process. The biochemical and pathological mechanisms are associated with chronic hyperglycemia of diabetes and the increased oxidative stress which has been postulated to play a central role in these disorders. Accumulating evidence suggests that oxidative cell injury caused by free radicals contributes to the development of type 1 diabetes (DM1) complications and decreased efficiency of antioxidant defenses (both enzymatic and nonenzymatic) seems to correlate with the severity of pathological tissue changes in DM1. In this review, we report as oxidative stress may exert deleterious effects in diabetes, as well as address current strategies in study to down-regulating vascular injury.


Subject(s)
Humans , Diabetes Mellitus, Type 1/metabolism , Oxidative Stress/physiology , Antioxidants/metabolism , Biochemical Phenomena , Diabetes Complications/metabolism , Diabetes Mellitus, Type 1/pathology , Diabetes Mellitus, Type 1/therapy , Free Radicals/metabolism , Hyperglycemia/complications , Protein Kinase C/physiology
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