Oxidative stress,insulin resistance,dyslipidemia and type 2 diabetes mellitus

摘要

Oxidative stress is increased in metabolic syndrome and type 2 diabetes mellitus(T2DM) and this appears to underlie the development of cardiovascular disease,T2 DM and diabetic complications.Increased oxidative stress appears to be a deleterious factor leading toinsulin resistance,dyslipidemia,β-cell dysfunction,impaired glucose tolerance and ultimately leading to T2 DM.Chronic oxidative stress,hyperglycemia and dyslipidemia are particularly dangerous for β-cells from lowest levels of antioxidant,have high oxidative energy requirements,decrease the gene expression of key β-cell genes and induce cell death.If β-cell functioning is impaired,it results in an under production of insulin,impairs glucose stimulated insulin secretion,fasting hyperglycemia and eventually the development of T2 DM.