PMID- 35583251 OWN - NLM STAT- MEDLINE DCOM- 20221024 LR - 20221116 IS - 1460-2385 (Electronic) IS - 0931-0509 (Linking) VI - 37 IP - 11 DP - 2022 Oct 19 TI - Usefulness of urinary biomarkers to estimate the interstitial fibrosis surface in diabetic nephropathy with normal kidney function. PG - 2102-2110 LID - 10.1093/ndt/gfac185 [doi] AB - BACKGROUND: Kidney biopsies of patients with diabetic nephropathy (DN) and normal kidney function may exhibit interstitial fibrosis (IF) without reduction of glomerular filtration rate (GFR) because of hyperfiltration. The aim of our study was to analyse the performance of a set of biomarkers of tubular injury to estimate the extent of IF in patients with DN and normal kidney function. METHODS: This cross-sectional study included 118 adults with DN diagnosed by kidney biopsy and GFR >/=90 mL/min/1.73 m2 and a control group of healthy subjects. We measured the urinary excretion of monocyte chemoattractant protein-1 (MCP-1) neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), liver-type fatty acid-binding protein (L-FABP), beta2-microglobulin and dickkopf-3 protein (DKK-3) at the time of kidney biopsy. GFR was measured by chromium-51 labeled ethylenediamine tetraacetic acid (Cr-EDTA) (measured GFR). IF was quantified using a quantitative morphometric procedure. Predictive multivariate models were developed to estimate the IF surface. RESULTS: Patients with DN showed significantly higher levels of DKK-3, MCP-1 and L-FABP and significantly lower levels of epidermal growth factor (EGF) than healthy controls. There were no significant between-group differences in the levels of beta2-microglobulin, KIM-1 or NGAL. IF was negatively associated with EGF and positively with age, proteinuria, MCP-1, DKK-3 and L-FABP, but not with beta2-microglobulin, KIM-1, NGAL or GFR. The best model to predict IF surface accounted for 59% of its variability and included age, proteinuria, EGF, DKK-3 and MCP-1. CONCLUSIONS: Our study provides a model to estimate the IF in DN that can be useful to assess the progression of IF in patients with normal kidney function. CI - (c) The Author(s) 2022. Published by Oxford University Press on behalf of the ERA. FAU - Gonzalez, Jorge AU - Gonzalez J AD - Servicio de Nefrologia Hospital Arnau de Vilanova, Lleida, Spain. FAU - Jatem, Elias AU - Jatem E AD - Servicio de Nefrologia Hospital Arnau de Vilanova, Lleida, Spain. FAU - Roig, Jordi AU - Roig J AD - Servicio de Nefrologia Hospital Arnau de Vilanova, Lleida, Spain. FAU - Valtierra, Naiara AU - Valtierra N AD - Nephrology Department, Vall d'Hebron Institut de Recerca, Barcelona, Spain. FAU - Ostos, Elena AU - Ostos E AD - Nephrology Department, Vall d'Hebron Institut de Recerca, Barcelona, Spain. FAU - Abo, Anabel AU - Abo A AD - Servicio de Anatomia Patologica, Hospital Arnau de Vilanova, Lleida, Spain. FAU - Santacana, Maria AU - Santacana M AD - Servicio de Anatomia Patologica, Hospital Arnau de Vilanova, Lleida, Spain. AD - Nephrology Department, Institut de Recerca Biomedica August Pi I Sunyer, Lleida, Spain. FAU - Garcia, Alicia AU - Garcia A AD - Nephrology Department, Institut de Recerca Biomedica August Pi I Sunyer, Lleida, Spain. FAU - Segarra, Alfons AU - Segarra A AD - Servicio de Nefrologia Hospital Arnau de Vilanova, Lleida, Spain. AD - Nephrology Department, Vall d'Hebron Institut de Recerca, Barcelona, Spain. AD - Nephrology Department, Institut de Recerca Biomedica August Pi I Sunyer, Lleida, Spain. AD - Servicio de Nefrologia Hospital Vall d'Hebron, Barcelona, Spain. LA - eng PT - Journal Article PL - England TA - Nephrol Dial Transplant JT - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JID - 8706402 RN - 0 (Lipocalin-2) RN - 0 (Chemokine CCL2) RN - 62229-50-9 (Epidermal Growth Factor) RN - 9G34HU7RV0 (Edetic Acid) RN - 0 (Biomarkers) RN - 0 (Fatty Acid-Binding Proteins) SB - IM MH - Humans MH - Adult MH - *Diabetic Nephropathies/diagnosis/etiology/metabolism MH - Lipocalin-2 MH - Chemokine CCL2/urine MH - Epidermal Growth Factor MH - Cross-Sectional Studies MH - Edetic Acid MH - Glomerular Filtration Rate MH - Biomarkers/urine MH - Fatty Acid-Binding Proteins/urine MH - Proteinuria/pathology MH - Kidney MH - Fibrosis MH - *Diabetes Mellitus OTO - NOTNLM OT - biomarkers OT - chronic renal failure OT - diabetic nephropathy OT - fibrosis OT - interstitial fibrosis EDAT- 2022/05/19 06:00 MHDA- 2022/10/25 06:00 CRDT- 2022/05/18 08:23 PHST- 2022/01/19 00:00 [received] PHST- 2022/05/19 06:00 [pubmed] PHST- 2022/10/25 06:00 [medline] PHST- 2022/05/18 08:23 [entrez] AID - 6588052 [pii] AID - 10.1093/ndt/gfac185 [doi] PST - ppublish SO - Nephrol Dial Transplant. 2022 Oct 19;37(11):2102-2110. doi: 10.1093/ndt/gfac185.