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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Nephrol
2015 ; 41
(3
): 241-7
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English Wikipedia
High titer anti-basement membrane antibodies in a subset of patients with
pediatric systemic lupus erythematosus
#MMPMID25926050
Orjuela A
; Suwanichkul A
; Canter D
; Minard CG
; Devaraj S
; Hicks MJ
; Muscal E
; Wenderfer SE
Am J Nephrol
2015[]; 41
(3
): 241-7
PMID25926050
show ga
BACKGROUND/AIMS: There is a critical need for more noninvasive biomarkers to
identify nephritis in patients with systemic lupus erythematosus (SLE). Recent
studies in a model mouse and an adult SLE patient cohort suggest that
anti-basement membrane antibody levels correlate well with lupus activity and
kidney injury. The purpose of this study was to assess the anti-basement membrane
reactivity in pediatric SLE (pSLE) patients with or without nephritis. METHODS:
Auto-antibodies to basement membrane antigens were assessed using an
anti-matrigel ELISA. Endpoint titers were measured in pSLE patients and healthy
children, as well as in autoimmune and non-immune mice, with good reproducing
capabilities. Findings were also analyzed with respect to the presence or absence
of nephritis, dsDNA antibodies, and other manifestations of pSLE. RESULTS:
MRL/lpr mice developed high-titer anti-matrigel antibodies, whereas C57BL/6 mice
did not. In a cohort of 21 pSLE patients and 22 pediatric controls, high-titer
anti-matrigel IgG, IgM and IgA antibody levels were specific for pSLE. High-titer
anti-matrigel IgG3 levels could distinguish with good sensitivity the 13 pSLE
patients with a history of nephritis from the 8 non-renal pSLE patients.
High-titer anti-matrigel IgG, IgA, IgM or IgG3 did not correlate with positive
anti-double stranded DNA, but defined an overlapping subset of patients.
CONCLUSION: The addition of anti-basement membrane antibody testing to serologic
testing in pSLE may help to monitor disease activity or to define important
subsets of patients with risks for specific disease manifestations.