PMID- 15601744 OWN - NLM STAT- MEDLINE DCOM- 20050628 LR - 20151119 IS - 1046-6673 (Print) IS - 1046-6673 (Linking) VI - 16 IP - 2 DP - 2005 Feb TI - Urine chemokines as biomarkers of human systemic lupus erythematosus activity. PG - 467-73 AB - The purpose of this study was to evaluate urine monocyte chemoattractant protein-1 (MCP-1) and IL-8 as biomarkers of SLE flare. Urine was collected every 2 mo from patients who were followed prospectively in the Ohio SLE Study. Renal and nonrenal flares were identified and MCP-1 and IL-8 were measured by specific ELISA in samples that were collected at flare. When available, MCP-1 and IL-8 were also measured in urine samples before and after flare. For comparison, MCP-1 and IL-8 were measured in the urine of healthy individuals and in renal and nonrenal SLE patients with stable disease activity (disease controls). Most patients were receiving maintenance immunosuppressive therapy before flare. At renal flare, mean urine MCP-1 (uMCP-1) was significantly greater than uMCP-1 at nonrenal flare and from healthy volunteers and renal disease controls. The level of uMCP-1 correlated with the increase in proteinuria at flare and was higher in patients with proliferative glomerulonephritis and in patients with impaired renal function. Urine MCP-1 was increased beginning 2 to 4 mo before flare. Patients who responded to therapy showed a slow decline in uMCP-1 over several months, whereas nonresponders had persistently high uMCP-1. In contrast, uIL-8 did not change with disease activity and was not elevated at renal or nonrenal flare compared with disease controls. In conclusion, uMCP-1 but not uIL-8 is a sensitive and specific biomarker of renal SLE flare and its severity, even in patients who receive significant immunosuppressive therapy. Persistently elevated uMCP-1 after treatment may indicate ongoing kidney injury that may adversely affect renal prognosis. FAU - Rovin, Brad H AU - Rovin BH AD - Ohio State University, Nephrology Division, N210 Means Hall, 1654 Upham Drive, Columbus, OH 43210, USA. rovin-1@medctr.osu.edu FAU - Song, Huijuan AU - Song H FAU - Birmingham, Dan J AU - Birmingham DJ FAU - Hebert, Lee A AU - Hebert LA FAU - Yu, Chack Yung AU - Yu CY FAU - Nagaraja, Haikady N AU - Nagaraja HN LA - eng GR - M01 RR 00034/RR/NCRR NIH HHS/United States GR - P01 DK 55546/DK/NIDDK NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20041215 PL - United States TA - J Am Soc Nephrol JT - Journal of the American Society of Nephrology : JASN JID - 9013836 RN - 0 (Biomarkers) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Interleukin-8) SB - IM MH - Adult MH - Analysis of Variance MH - Biomarkers/urine MH - Case-Control Studies MH - Chemokine CCL2/metabolism/*urine MH - Chemokines/metabolism/*urine MH - Cohort Studies MH - Disease Progression MH - Female MH - Humans MH - Interleukin-8/metabolism/*urine MH - Lupus Erythematosus, Systemic/*diagnosis/*urine MH - Male MH - Middle Aged MH - Probability MH - Prognosis MH - Reference Values MH - Sensitivity and Specificity MH - Severity of Illness Index MH - Urinalysis EDAT- 2004/12/17 09:00 MHDA- 2005/06/29 09:00 CRDT- 2004/12/17 09:00 PHST- 2004/12/17 09:00 [pubmed] PHST- 2005/06/29 09:00 [medline] PHST- 2004/12/17 09:00 [entrez] AID - ASN.2004080658 [pii] AID - 10.1681/ASN.2004080658 [doi] PST - ppublish SO - J Am Soc Nephrol. 2005 Feb;16(2):467-73. doi: 10.1681/ASN.2004080658. Epub 2004 Dec 15.