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Mean platelet volume as an indicator of disease activity in juvenile SLE

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Abstract

The aim of the study was to assess mean platelet volume (MPV) in children with systemic lupus erythematosus (SLE) at the active and inactive stages. Twenty children with SLE and 30 age- and gender-matched controls were enrolled. Demographic data, SLE disease activity index (SLEDAI), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), MPV, complement 3 (C3), complement 4 (C4), urine protein (Up), and urine creatinine (Ucr) values upon reactivation and remission phases were recorded. MPV was statistically higher in patients than in controls and significantly increased in active phase compared to inactive phase (p = 0.001). A MPV level of 8.4 fL was determined as predictive cutoff value of activation of SLE (sensitivity 75 %, specificity 90 %). MPV was positively correlated with SLEDAI (p = 0.01, r = 0.55), ESR (p = 0.01, r = 0.45), CRP (p = 0.04, r = 0.24), and Up/Ucr (p = 0.01, r = 0.45) and negatively correlated with C3 (p = 0.02, r = −0.36), albumin (p = 0.01, r = −0.63), and Hb (p = 0.01, r = −0.48). There was not any significant association between MPV and the histological classification of lupus nephritis (p = 0.65). MPV might be used as an early indicator of reactivation in children with SLE. MPV seemed to be more accurate than ESR, CRP, and C3 for monitoring the disease activity in SLE.

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  1. Division of Pediatric Nephrology, Dicle University, Diyarbakır, Turkey

    Sevgi Yavuz & Aydin Ece

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  1. Sevgi Yavuz
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  2. Aydin Ece
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Correspondence to Sevgi Yavuz.

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Yavuz, S., Ece, A. Mean platelet volume as an indicator of disease activity in juvenile SLE. Clin Rheumatol 33, 637–641 (2014). https://doi.org/10.1007/s10067-014-2540-3

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