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 ORIGINAL ARTICLE
Year : 2012  |  Volume : 22  |  Issue : 1  |  Page : 5-12

Urinary monocyte chemotactic protein-1 and transforming growth factor-β in systemic lupus erythematosus


1 Shiraz Nephrology Urology Research Center; Department of Pathology, Shiraz Medical School, Shiraz University of Medical Sciences, Zand Avenue, Shiraz, Iran
2 Department of Pathology, Shiraz Medical School, Shiraz University of Medical Sciences, Zand Avenue, Shiraz, Iran
3 Department of Medicine, Shiraz Medical School, Shiraz University of Medical Sciences, Zand Avenue, Shiraz, Iran
4 Shiraz Nephrology Urology Research Center; Department of Medicine, Shiraz Medical School, Shiraz University of Medical Sciences, Zand Avenue, Shiraz, Iran

Correspondence Address:
S Torabinejad
Shiraz Nephrology Urology Research Center, Shiraz Medical School, Shiraz University of Medical Sciences, Zand Avenue, Shiraz
Iran
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Source of Support: Shiraz Nephrology Urology Research Center, Shiraz University of Medical Sciences, Conflict of Interest: None


DOI: 10.4103/0971-4065.91179

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The purpose of this investigation was to assess the correlation of two biomarkers with the occurrence of renal flares in systemic lupus erythematosus (SLE). Urine levels of monocyte chemotactic protein-1 (MCP-1) and transforming growth factor beta (TGF-β) were measured at baseline, and at two and four months in five groups of patients: 25 lupus nephritis patients with active disease (active LN), 10 lupus nephritis patients with SLE in remission (remission LN), 25 patients with clinical active SLE and without nephritis (active NLN), 10 patients without nephritis with SLE in remission (remission NLN) and 10 healthy controls. We used repeated measurement and ANOVA with Duncan's post hoc to analyze the data; the urine level of the two proteins could distinguish the groups based on the existence of lupus nephritis and/or activity of SLE disease. Furthermore we performed receiver operating curve analysis to identify a cutoff point with a good sensitivity and specificity to diagnose lupus nephritis with either one of the urine proteins. Finally the samples from active LN were grouped according to whether they were Class IV or other classes. Baseline urinary MCP-1, but not TGF-β, was significantly different between the classes. Further investigation into the use of these cytokines in a prospective study is needed to determine their capacity as diagnostic tools for renal flares.






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Indian Journal of Nephrology
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Online since 20th Sept '07