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|Title:||Urinary B-cell-activating factor of the tumour necrosis factor family (BAFF) in systemic lupus erythematosus|
|Citation:||Lupus, 2018; 27(13):2029-2040|
|F B Vincent, R Kandane-Rathnayake, A Y Hoi, L Slavin, J D Godsell, A R Kitching, J Harris, C L Nelson, A J Jenkins, A Chrysostomou, M L Hibbs, P G Kerr, M Rischmueller, F Mackay, E F Morand|
|Abstract:||INTRODUCTION:We examined the clinical relevance of urinary concentrations of B-cell-activating factor of the tumour necrosis factor family (BAFF) and a proliferation-inducing ligand (APRIL) in systemic lupus erythematosus (SLE). METHODS:We quantified urinary BAFF (uBAFF) by enzyme-linked immunosorbent assay in 85 SLE, 28 primary Sjögren syndrome (pSS), 40 immunoglobulin A nephropathy (IgAN) patients and 36 healthy controls (HCs). Urinary APRIL (uAPRIL) and monocyte chemoattractant protein 1 (uMCP-1) were also quantified. Overall and renal SLE disease activity were assessed using the Systemic Lupus Erythematosus Disease Activity Index 2000. RESULTS:uBAFF was detected in 12% (10/85) of SLE patients, but was undetectable in HCs, IgAN and pSS patients. uBAFF was detectable in 28% (5/18) of SLE patients with active nephritis vs 5/67 (7%) of those without ( p = 0.03), and uBAFF was significantly higher in active renal patients ( p = 0.02) and more likely to be detected in patients with persistently active renal disease. In comparison, uAPRIL and uMCP-1 were detected in 32% (25/77) and 46% (22/48) of SLE patients, respectively. While no difference in proportion of samples with detectable uAPRIL was observed between SLE, HCs and IgAN patients, both uAPRIL and uMCP-1 were significantly detectable in higher proportions of patients with active renal disease. CONCLUSIONS:uBAFF was detectable in a small but a significant proportion of SLE patients but not in other groups tested, and was higher in SLE patients with active renal disease.|
|Keywords:||A proliferation-inducing ligand (APRIL); B-cell–activating factor from the tumour necrosis factor family (BAFF); biomarker; lupus nephritis (LN); monocyte chemoattractant protein 1 (MCP-1); systemic lupus erythematosus (SLE)|
|Rights:||© The Author(s), 2018. Reprints and permissions: http://www.sagepub.co.uk/journalsPermissions.nav|
|Appears in Collections:||Medicine publications|
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