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2014 ; 154
(1
): 49-65
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Serum autoantibodies in pristane induced lupus are regulated by neutrophil
gelatinase associated lipocalin
#MMPMID24971701
Pawar RD
; Goilav B
; Xia Y
; Zhuang H
; Herlitz L
; Reeves WH
; Putterman C
Clin Immunol
2014[Sep]; 154
(1
): 49-65
PMID24971701
show ga
The onset of autoantibodies in systemic autoimmunity can be the result of a
breakdown in tolerance at multiple checkpoints. Genetic, hormonal, and
immunological factors can combine with environmental influences to accelerate the
onset of disease and aggravate disease outcome. Here, we describe a novel
mechanism relating to the regulatory role of Neutrophil Gelatinase Associated
Lipocalin (NGAL) in modulating the levels of autoantibodies in pristane induced
lupus. Following a single injection of pristane intraperitoneally, NGAL
expression was induced in both the serum and spleen. Furthermore, NGAL deficient
mice were more susceptible to the induction of pristane stimulated autoimmunity,
and displayed higher numbers of autoantibody secreting cells and increased
expression of activation induced cytidine deaminase (AID) and other inflammatory
mediators in the spleen. In contrast, kidney damage was milder in NGAL deficient
mice, indicating that NGAL was detrimental in autoantibody mediated kidney
disease. These studies indicate that NGAL plays differential roles in different
tissues in the context of lupus, and suggest a previously unrecognized role for
NGAL in adaptive immunity.