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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 Ann+Rheum+Dis
2015 ; 74
(12
): 2199-206
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Peptidylarginine deiminase inhibition disrupts NET formation and protects against
kidney, skin and vascular disease in lupus-prone MRL/lpr mice
#MMPMID25104775
Knight JS
; Subramanian V
; O'Dell AA
; Yalavarthi S
; Zhao W
; Smith CK
; Hodgin JB
; Thompson PR
; Kaplan MJ
Ann Rheum Dis
2015[Dec]; 74
(12
): 2199-206
PMID25104775
show ga
OBJECTIVES: An imbalance between neutrophil extracellular trap (NET) formation
and degradation has been described in systemic lupus erythematosus (SLE),
potentially contributing to autoantigen externalisation, type I interferon
synthesis and endothelial damage. We have demonstrated that peptidylarginine
deiminase (PAD) inhibition reduces NET formation and protects against
lupus-related vascular damage in the New Zealand Mixed model of lupus. However,
another strategy for inhibiting NETs--knockout of NOX2--accelerates lupus in a
different murine model, MRL/lpr. Here, we test the effects of PAD inhibition on
MRL/lpr mice in order to clarify whether some NET inhibitory pathways may be
consistently therapeutic across models of SLE. METHODS: NET formation and
autoantibodies to NETs were characterised in lupus-prone MRL/lpr mice. MRL/lpr
mice were also treated with two different PAD inhibitors, Cl-amidine and the
newly described BB-Cl-amidine. NET formation, endothelial function, interferon
signature, nephritis and skin disease were examined in treated mice. RESULTS:
Neutrophils from MRL/lpr mice demonstrate accelerated NET formation compared with
controls. MRL/lpr mice also form autoantibodies to NETs and have evidence of
endothelial dysfunction. PAD inhibition markedly improves endothelial function,
while downregulating the expression of type I interferon-regulated genes. PAD
inhibition also reduces proteinuria and immune complex deposition in the kidneys,
while protecting against skin disease. CONCLUSIONS: PAD inhibition reduces NET
formation, while protecting against lupus-related damage to the vasculature,
kidneys and skin in various lupus models. The strategy by which NETs are
inhibited will have to be carefully considered if human studies are to be
undertaken.
|Amidines/*pharmacology
[MESH]
|Animals
[MESH]
|Disease Models, Animal
[MESH]
|Enzyme-Linked Immunosorbent Assay
[MESH]
|Extracellular Traps/*metabolism
[MESH]
|Hydrolases/*antagonists & inhibitors
[MESH]
|Kidney Diseases/etiology/*prevention & control
[MESH]