Abstract
Aim: To identify serum metabolomic fingerprints using 1H NMR in Diabetic Retinopathy (DR). Methods and Materials: 1H-NMR was performed on 32 subjects [11 type 2 diabetic patients each without DR (group A) and with DR (group B) along with 10 control (group C)]. Results:The study unraveled 1H-NMR based serum metabolomic fingerprints of diabetic retinopathy showed significant variations in Ribitol, D-glucose, Fructose-6-phosphate, Uridine Diphosphate-N-acetyl glucosamine and Glycerophosphocholine. The study envisaged that abnormal polyol metabolism and accumulation of ribitol contributory to development of diabetic retinopathy.Presence of Uridine Diphosphate-N-acetylglucosamine in blood has been also confirmed its probable role in progressive neurodegeneration in diabetic retinopathy. NMR spectra also indicated that downregulation of glycerophosphocholine is directly related to retinol metabolism and subsequent unusual chromophore synthesis facilitating retinal degeneration. Conclusion:Five metabolomic fingerprints have been identified and found to be unique in Diabetic Retinopathy (DR).
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