ArticleCureus2026
Association of Oxidative Stress With Biochemical Markers in Diabetic and Non-diabetic Chronic Kidney Disease Patients: A Cross-Sectional Study.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background Chronic kidney disease (CKD) is exacerbated by oxidative stress (OS), which accelerates renal injury and cardiovascular complications. Diabetes intensifies OS via hyperglycemia and mitochondrial dysfunction, promoting faster decline in diabetic kidney disease (DKD). This study compares OS markers with standard biochemical parameters in diabetic versus non-diabetic CKD to inform risk stratification and management. Methods This hospital-based, cross-sectional study enrolled 240 CKD patients (108 diabetic, 132 non-diabetic) over one year. Demographics, clinical data, and biochemical parameters-including fasting/postprandial blood sugar (FBS/PPBS), HbA1c, creatinine, urea, uric acid, estimated glomerular filtration rate (eGFR), and malondialdehyde (MDA)-were collected. Group comparisons, ANOVA, post-hoc Tukey, and Pearson's correlation assessed associations, with p<0.05 considered significant. Results A total of 240 patients with chronic kidney disease were included in the study, of whom 108 (45.0%) had DKD and 132 (55.0%) had non-DKD. Most patients, 135 (56.2%), were aged 40-59 years. Regarding sex distribution, 163 (67.9%) were male, and 77 (32.1%) were female. Stage 5 CKD was the most prevalent, observed in 142 (59.2%) patients. Patients with DKD demonstrated significantly higher FBS, PPBS, HbA1c, uric acid, and MDA, with lower eGFR compared to non-DKD (p<0.05). MDA levels showed a positive correlation with blood urea, serum creatinine, uric acid, and CKD stage, and a negative correlation with eGFR (p<0.05). Conclusion Diabetic CKD patients exhibit a higher oxidative burden than non-diabetic CKD patients, and MDA levels rise progressively with worsening CKD stage. These results emphasize the clinical relevance of oxidative stress in renal dysfunction and suggest its potential role as a prognostic biomarker and therapeutic target in CKD.
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