Serum ApoA4 levels predicted the progression of renal impairment in T2DM

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Abstract

Abstract Background Among multiple causes, diabetic nephropathy ( DN ) is the major underlying renal disease that leads to end‐stage renal disease ( ESRD ), and early diagnosis can effectively prevent or delay the progression to ESRD . Therefore, the current study aimed to develop noninvasive, accurate detection markers. Materials & Methods For this study, 62 diabetes mellitus ( DM ) patients, 59 DN patients and 21 healthy controls ( HC s) were recruited. All participants’ serum samples were subjected to concavanalin (Con) A affinity chromatography, which utilizes glycoproteins to discover potential markers. Results From nano LC ‐ MS and Western blot analysis, apolipoprotein A‐ IV (ApoA4) was selected which featured a gradual, almost twofold increase in the order of HC , DM and DN . In the Con A‐based ELISA , the DM group was 1.91‐fold higher than the HC group, while the DN group was 2.56‐fold higher than the HC s and 1.33‐fold higher than the DM group. In addition, significant positive correlations were observed between ApoA4 and blood urea nitrogen levels and between ApoA4 and creatine levels, while significant negative correlations were seen between serum protein levels and between serum albumin levels in comparisons of DM and DN samples. Conclusions Serum Con A‐bound ApoA4 levels were higher in the DM group than in HC s, and further increased in the DN group. Levels of ApoA4 were positively correlated with blood urea nitrogen and creatine, but negatively correlated with serum protein and albumin. This evidence supports serum Con A‐bound ApoA4 as a circulating marker for predicting the progression of renal impairment in DM patients.

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