PMID- 31637265 OWN - NLM STAT- MEDLINE DCOM- 20200226 LR - 20220410 IS - 2314-7156 (Electronic) IS - 2314-8861 (Print) IS - 2314-7156 (Linking) VI - 2019 DP - 2019 TI - Urinary NGAL and RBP Are Biomarkers of Normoalbuminuric Renal Insufficiency in Type 2 Diabetes Mellitus. PG - 5063089 LID - 10.1155/2019/5063089 [doi] LID - 5063089 AB - OBJECTIVES: As a screening index of diabetic kidney disease (DKD), urinary albumin/creatine ratio (UACR) is commonly used. However, approximately 23.3%-56.6% of DKD patients with estimated glomerular filtration rate (eGFR) < 60 ml/min per 1.73 m(2) are normoalbuminuric. Thus, urinary biomarkers of nonalbuminuric renal insufficiency in type 2 diabetes mellitus (T2DM) patients are urgently needed. METHODS: This cross-sectional study enrolled 209 T2DM patients with normoalbuminuria whose diabetes duration was more than 5 years. The patients were classified into two groups, NO-CKD (eGFR >/= 60 ml/min per 1.73 m(2), n = 165) and NA-DKD (eGFR < 60 ml/min per 1.73 m(2), n = 44). Levels of urinary neutrophil gelatinase-associated lipocalin (NGAL), retinol-binding protein (RBP), plasminogen activator inhibitor-1 (PAI-1), vascular cell adhesion molecule-1 (VCAM-1), and E-cadherin were detected, and their correlations with eGFR, plasma TNF-alpha, IL-6, endothelin-1 (ET-1), and 8-hydroxydeoxyguanosine (8-OHdG) were assessed. RESULTS: Among patients with renal insufficiency, 26.0% was normoalbuminuric. Compared to the NO-CKD group, the NA-DKD group was older with lower hemoglobin (HB) levels and higher systolic blood pressure (SBP), plasma TNF-alpha, IL-6, and 8-OHdG levels. Logistic regression analysis suggested that age, TNF-alpha, and 8-OHdG were independent risk factors for nonalbuminuric renal insufficiency. Compared to the NO-CKD group, the NA-DKD group exhibited significant increases in urinary NGAL and RBP levels but not PAI-1, VCAM-1, and E-cadherin. Urinary NGAL and RBP both correlated negatively with eGFR and positively with plasma IL-6 and 8-OHdG. Multiple linear regression indicated NGAL (beta = -0.287, p = 0.008) and RBP (beta = -44.545, p < 0.001) were independently correlated with eGFR. CONCLUSION: Age, plasma TNF-alpha, and 8-OHdG are independent risk factors for renal insufficiency in T2DM patients with normoalbuminuria. Urinary NGAL and RBP can serve as noninvasive biomarkers of normoalbuminuric renal insufficiency in T2DM. CI - Copyright (c) 2019 Aimei Li et al. FAU - Li, Aimei AU - Li A AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Yi, Bin AU - Yi B AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Liu, Yan AU - Liu Y AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Wang, Jianwen AU - Wang J AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Dai, Qing AU - Dai Q AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Huang, Yuxi AU - Huang Y AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. FAU - Li, Yan Chun AU - Li YC AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. AD - Department of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, IL 60637, USA. FAU - Zhang, Hao AU - Zhang H AUID- ORCID: 0000-0002-2049-3485 AD - Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, 410013 Hunan, China. LA - eng PT - Journal Article DEP - 20190915 PL - Egypt TA - J Immunol Res JT - Journal of immunology research JID - 101627166 RN - 0 (Biomarkers) RN - 0 (Lipocalin-2) RN - 0 (Retinol-Binding Proteins) SB - IM MH - Aged MH - Albuminuria/*metabolism MH - Biomarkers/*urine MH - Diabetes Mellitus, Type 2/*physiopathology MH - Diabetic Nephropathies/physiopathology MH - Female MH - Humans MH - Lipocalin-2/*urine MH - Male MH - Middle Aged MH - Renal Insufficiency/*urine MH - Retinol-Binding Proteins/*urine PMC - PMC6766169 COIS- All authors declare that they have no conflicts of interest, financial, or otherwise. EDAT- 2019/10/23 06:00 MHDA- 2020/02/27 06:00 PMCR- 2019/09/15 CRDT- 2019/10/23 06:00 PHST- 2019/03/07 00:00 [received] PHST- 2019/07/24 00:00 [revised] PHST- 2019/08/21 00:00 [accepted] PHST- 2019/10/23 06:00 [entrez] PHST- 2019/10/23 06:00 [pubmed] PHST- 2020/02/27 06:00 [medline] PHST- 2019/09/15 00:00 [pmc-release] AID - 10.1155/2019/5063089 [doi] PST - epublish SO - J Immunol Res. 2019 Sep 15;2019:5063089. doi: 10.1155/2019/5063089. eCollection 2019.