PMID- 32293313 OWN - NLM STAT- MEDLINE DCOM- 20210903 LR - 20210903 IS - 1471-2369 (Electronic) IS - 1471-2369 (Linking) VI - 21 IP - 1 DP - 2020 Apr 15 TI - Urinary monocyte chemoattractant protein 1 associated with calcium oxalate crystallization in patients with primary hyperoxaluria. PG - 133 LID - 10.1186/s12882-020-01783-z [doi] LID - 133 AB - BACKGROUND: Patients with primary hyperoxaluria (PH) often develop kidney stones and chronic kidney disease. Noninvasive urine markers reflective of active kidney injury could be useful to gauge the effectiveness of ongoing treatments. METHODS: A panel of biomarkers that reflect different nephron sites and potential mechanisms of injury (clusterin, neutrophil gelatinase-associated lipocalin (NGAL), 8-isoprostane (8IP), monocyte-chemoattractant protein 1(MCP-1), liver-type fatty acid binding protein (L-FABP), heart-type fatty acid binding protein (H-FABP), and osteopontin (OPN)) were measured in 114 urine specimens from 30 PH patients over multiple visits. Generalized estimating equations were used to assess associations between biomarkers and 24 h urine excretions, calculated proximal tubular oxalate concentration (PTOx), and eGFR. RESULTS: Mean (+/-SD) age at first visit was 19.5 +/- 16.6 years with an estimated glomerular filtration rate (eGFR) of 68.4 +/- 21.0 ml/min/1.73m(2). After adjustment for age, sex, and eGFR, a higher urine MCP-1 concentration and MCP-1/creatinine ratio was positively associated with CaOx supersaturation (SS). Higher urine NGAL and NGAL/creatinine as well as OPN and OPN/creatinine were associated with higher eGFR. 8IP was negatively associated with PTOx and urinary Ox, but positively associated with CaOx SS. CONCLUSION: In PH patients greater urine MCP-1 and 8IP excretion might reflect ongoing collecting tubule crystallization, while greater NGAL and OPN excretion may reflect preservation of kidney mass and function. CaOx crystals, rather than oxalate ion may mediate oxidative stress in hyperoxaluric conditions. Further studies are warranted to determine whether urine MCP-1 excretion predicts long term outcome or is altered in response to treatment. FAU - Wang, Xiangling AU - Wang X AD - Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. FAU - Bhutani, Gauri AU - Bhutani G AD - Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. FAU - Vaughan, Lisa E AU - Vaughan LE AD - Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA. FAU - Enders, Felicity T AU - Enders FT AD - Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA. FAU - Haskic, Zejfa AU - Haskic Z AD - Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. FAU - Milliner, Dawn AU - Milliner D AD - Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. FAU - Lieske, John C AU - Lieske JC AD - Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Lieske.John@mayo.edu. AD - Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. Lieske.John@mayo.edu. CN - investigators of the Rare Kidney Stone Consortium LA - eng GR - U54 DK083908/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20200415 PL - England TA - BMC Nephrol JT - BMC nephrology JID - 100967793 RN - 0 (Biomarkers) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 106441-73-0 (Osteopontin) RN - 2612HC57YE (Calcium Oxalate) SB - IM MH - Adult MH - Biomarkers/urine MH - *Calcium Oxalate/metabolism/urine MH - *Chemokine CCL2/metabolism/urine MH - Crystallization MH - Female MH - Glomerular Filtration Rate MH - Humans MH - *Hyperoxaluria, Primary/complications/metabolism/urine MH - *Kidney/metabolism/pathology MH - *Kidney Calculi/diagnosis/etiology/metabolism MH - Male MH - Osteopontin/urine MH - Predictive Value of Tests MH - Prognosis MH - Renal Elimination MH - *Renal Insufficiency, Chronic/diagnosis/etiology/physiopathology PMC - PMC7161151 OTO - NOTNLM OT - Crystallization OT - Glomerular filtration rate OT - Monocyte-chemoattractant protein 1 OT - Primary hyperoxaluria OT - Renal damage COIS- The authors declare no conflicts of interest or competing interests. This research is involving human subjects. FIR - Assimos, Dean IR - Assimos D FIR - Baum, Michelle IR - Baum M FIR - Somers, Michael IR - Somers M FIR - Copelovitch, Lawrence IR - Copelovitch L FIR - Devarajan, Prasad IR - Devarajan P FIR - Goldfarb, David IR - Goldfarb D FIR - Harvey, Elizabeth IR - Harvey E FIR - Robinson, Lisa IR - Robinson L FIR - Haley, William IR - Haley W FIR - Michael, Mini IR - Michael M FIR - Langman, Craig IR - Langman C EDAT- 2020/04/16 06:00 MHDA- 2021/09/04 06:00 PMCR- 2020/04/15 CRDT- 2020/04/16 06:00 PHST- 2019/10/15 00:00 [received] PHST- 2020/03/23 00:00 [accepted] PHST- 2020/04/16 06:00 [entrez] PHST- 2020/04/16 06:00 [pubmed] PHST- 2021/09/04 06:00 [medline] PHST- 2020/04/15 00:00 [pmc-release] AID - 10.1186/s12882-020-01783-z [pii] AID - 1783 [pii] AID - 10.1186/s12882-020-01783-z [doi] PST - epublish SO - BMC Nephrol. 2020 Apr 15;21(1):133. doi: 10.1186/s12882-020-01783-z.