Abstract
ABSTRACT Background and aim Diabetic nephropathy (DN) is a major microvascular diabetic complication representing the key leading reason for end-stage renal disease (ESRD). The current work aimed to evaluate the value of urinary and serum NGAL (neutrophil gelatinase-associating lipocalin), as an early biomarker of DN in subjects with type-2 diabetes mellitus (T2DM). Methods The study included 300 adult subjects with T2DM subdivided into 3 groups: Group A: 100 subjects with normoalbuminuria. Group B: 100 subjects with moderately increased albuminuria. Group C: 100 subjects with severely increased albuminuria. Results Serum NGAL and urinary NGAL were significantly elevated in T2DMsubjects with albuminuria than in normoalbuminuric T2DMsubjects (p < 0.001). Serum NGAL and urinary NGAL were positively associated with albumin/creatinine Ratio, (p < 0.001). ROC curve analysis was done to discriminate among moderately/severely increased albuminuria from normoalbuminuria showed a cutoff point ≤ 10.76 for serum NGAL with AUC 0.785 (p value < 0.001) and a cutoff point ≤ 15.811 with AUC 0.687 for urinary NGAL(p < 0.001). Conclusion NGAL can be utilized as a biomarker for the early diagnosis of DN. Both urinary NGAL and serum NGAL may predict albuminuria and can be utilized as a noninvasive tool for diagnosing, grading, and progressions of DN.
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