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Updated: Apr 15, 2026

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
Elevated serum levels of mannose-binding lectin and diabetic nephropathy in type 2 diabetes
Ling-Zhi Guan1, Qiang Tong1, Jing Xu1
1Department of Endocrinology, Xinqiao Hospital, Third Military Medical University, Chongqing, P. R. China.
Objective:
Inflammation and complement activation initiated by mannose-binding lectin (MBL) may be implicated in the pathogenesis of diabetic vascular complications. We investigated serum MBL levels in type 2 diabetes with diabetic nephropathy (DN) and with persistent normoalbuminuria.
Method:
Serum MBL levels were determined in 242 type 2 diabetes with overt nephropathy and 242 type 2 diabetes with persistent normoalbuminuria matched for age, sex, and duration of diabetes, as well as in 100 healthy control subjects. The prediction value of MBL was compared with HbA1c, Hs-CRP and with other known predictors. Multivariate analyses were performed using logistic regression models.
Results:
The serum MBL levels were significantly higher in diabetes with DN as compared to with persistent normoalbuminuria (P<0.0001). Multivariate logistic regression analysis adjusted for common factors showed that serum MBL levels≥2950ug/L was an independent indictor of DN (OR=7.55; 95%CI: 3.44-19.04). Based on the ROC curve, the optimal cutoff value of serum MBL levels as an indicator for diagnosis of DN was projected to be 2950ug/L, which yielded a sensitivity of 77.2% and a specificity of 80.8%, with the area under the curve at 0.809 (95%CI, 0.769-0.848).
Conclusion:
Our findings suggested that MBL may be involved in the pathogenesis of DN in type 2 diabetes, and that determination of MBL status might be used to identify patients at increased risk of developing nephropathy complications.
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