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2016 ; 5
(ä): 79-84
Nephropedia Template TP
gab.com Text
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English Wikipedia
Urinary myeloid IgA Fc alpha receptor (CD89) and transglutaminase-2 as new
biomarkers for active IgA nephropathy and henoch-Schönlein purpura nephritis
#MMPMID27051593
Moresco RN
; Speeckaert MM
; Zmonarski SC
; Krajewska M
; Komuda-Leszek E
; Perkowska-Ptasinska A
; Gesualdo L
; Rocchetti MT
; Delanghe SE
; Vanholder R
; Van Biesen W
; Delanghe JR
BBA Clin
2016[Jun]; 5
(ä): 79-84
PMID27051593
show ga
BACKGROUND: IgA nephropathy (IgAN) and Henoch-Schönlein purpura nephritis (HSPN)
are glomerular diseases that share a common and central pathogenic mechanism. The
formation of immune complexes containing IgA1, myeloid IgA Fc alpha receptor
(Fc?RI/CD89) and transglutaminase-2 (TG2) is observed in both conditions.
Therefore, urinary CD89 and TG2 could be potential biomarkers to identify active
IgAN/HSPN. METHODS: In this multicenter study, 160 patients with IgAN or HSPN
were enrolled. Urinary concentrations of CD89 and TG2, as well as some other
biochemical parameters, were measured. RESULTS: Urinary CD89 and TG2 were lower
in patients with active IgAN/HSPN compared to IgAN/HSPN patients in complete
remission (P < 0.001). The CD89xTG2 formula had a high ability to discriminate
active from inactive IgAN/HSPN in both situations: CD89xTG2/proteinuria ratio
(AUC: 0.84, P < 0.001, sensitivity: 76%, specificity: 74%) and CD89xTG2/urinary
creatinine ratio (AUC: 0.82, P < 0.001, sensitivity: 75%, specificity: 74%).
Significant correlations between urinary CD89 and TG2 (r = 0.711, P < 0.001),
proteinuria and urinary CD89 (r = - 0.585, P < 0.001), and proteinuria and
urinary TG2 (r = - 0.620, P < 0.001) were observed. CONCLUSIONS: Determination of
CD89 and TG2 in urine samples can be useful to identify patients with active
IgAN/HSPN.