Frontiers in Endocrinology (Aug 2023)

Novel risk score model for non-proliferative diabetic retinopathy based on untargeted metabolomics of venous blood

  • Xinyu Wang,
  • Xinyu Wang,
  • Shu Yang,
  • Shu Yang,
  • Shu Yang,
  • Guangyan Yang,
  • Guangyan Yang,
  • Guangyan Yang,
  • Jialong Lin,
  • Pengfei Zhao,
  • Jingyun Ding,
  • Hongyan Sun,
  • Ting Meng,
  • Ming Ming Yang,
  • Ming Ming Yang,
  • Ming Ming Yang,
  • Lin Kang,
  • Lin Kang,
  • Lin Kang,
  • Lin Kang,
  • Zhen Liang,
  • Zhen Liang,
  • Zhen Liang

DOI
https://doi.org/10.3389/fendo.2023.1180415
Journal volume & issue
Vol. 14

Abstract

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Background and PurposeNonproliferative diabetic retinopathy (NPDR) occurs in the early stages of Diabetic retinopathy (DR), and the study of its metabolic markers will help to prevent DR. Hence, we aimed to establish a risk score based on multiple metabolites through untargeted metabolomic analysis of venous blood from NPDR patients and diabetic non-DR patients.Experimental ApproachUntargeted metabolomics of venous blood samples from patients with NPDR, diabetes melitus without DR were performed using high-performance liquid chromatography-mass spectrometry.ResultsDetailed metabolomic evaluation showed distinct clusters of metabolites in plasma samples from patients with NPDR and diabetic non-DR patients. NPDR patients had significantly higher levels of phenylacetylglycine, L-aspartic acid, tiglylglycine, and 3-sulfinato-L-alaninate, and lower level of indolelactic acid, threonic acid, L-arginine (Arg), and 4-dodecylbenzenesulfonic acid compared to control. The expression profiles of these eight NPDR risk-related characteristic metabolites were analyzed using Cox regression to establish a risk score model. Subsequently, univariate and multivariate Cox regression analyses were used to determine that this risk score model was a predictor of independent prognosis for NPDR.ConclusionsUntargeted metabolome analysis of blood metabolites revealed unreported metabolic alterations in NPDR patients compared with those in diabetic non-DR patients or MH. In the venous blood, we identified depleted metabolites thA and Arg, indicating that they might play a role in NPDR development.

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