title: Malondialdehyde serum concentration in type 1 diabetic with and without retinopathy.
abstract: Lipid peroxides are thought to be formed by free radicals and have been implicated in the pathogenesis of diabetes complications. A convenient and sensitive method for estimation of lipid peroxide concentration is the quantitative estimation of their metabolic end-product malondialdehyde (MDA) expressed in mmol/L using the thiobarbituric acid test (TBA-test). We have measured the serum concentrations of MDA in 60 well controlled type I diabetic patients (28 without retinopathy and 32 with retinopathy) and 13 age-matched healthy subjects. Patients with retinopathy showed significantly increased MDA level (2.65+/-1.00) compared to diabetics without retinopathy (1.80+/-0.81) and healthy controls (1.47+/-0.45). The serum levels of MDA correlated best with glycosylated haemoglobin (r=0.28), serum triglyceride concentration (r=0.29) and serum cholesterol concentration. (r=0.47). Increased lipid peroxides suggesting increased free radical activity is associated with retinopathy and this may have pathogenetic implications.
authors.affiliation: Division of Ophthalmology, University of Alicante, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Losada
authors.forename: J L
authors.initials: JL
authors.lastname: Alio
mesh_terms: D000328:Adult; D002784:Cholesterol / Q000097:blood; D003922:Diabetes Mellitus, Type 1 / Q000097:blood*; D003930:Diabetic Retinopathy / Q000097:blood* / Q000175:diagnosis / Q000209:etiology; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D015227:Lipid Peroxidation / Q000502:physiology; D008297:Male; D008315:Malondialdehyde / Q000097:blood*; D012160:Retina / Q000473:pathology*; D014280:Triglycerides / Q000097:blood
chemical_list: D002784:Cholesterol; D006442:Glycated Hemoglobin; D008315:Malondialdehyde; D014280:Triglycerides