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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Mediators+Inflamm 2015 ; 2015 (ä): ä Nephropedia Template TP
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TGF-Beta Blockade Increases Renal Inflammation Caused by the C-Terminal Module of the CCN2 #MMPMID26074680
Rodrigues-Díez R; Rayego-Mateos S; Orejudo M; Aroeira LS; Selgas R; Ortiz A; Egido J; Ruiz-Ortega M
Mediators Inflamm 2015[]; 2015 (ä): ä PMID26074680show ga
The CCN family member 2 (CCN2, also known as connective tissue growth factor) may behave as a risk biomarker and a potential therapeutic target for renal disease. CCN2 participates in the regulation of inflammation and fibrosis. TGF-? is considered the main fibrogenic cytokine; however, in some pathological settings TGF-? also has anti-inflammatory properties. CCN2 has been proposed as a downstream profibrotic mediator of TGF-?, but data on TGF-? role in CCN2 actions are scarce. Our aim was to evaluate the effect of TGF-? blockade in CCN2-mediated experimental renal damage. Systemic administration of the C-terminal module of CCN2 to mice caused sustained renal inflammation. In these mice, TGF-? blockade, using an anti-TGF-? neutralizing antibody, significantly increased renal expression of the NGAL (a kidney injury biomarker), kidney infiltration by monocytes/macrophages, and upregulation of MCP-1 expression. The anti-inflammatory effect of TGF-? seems to be mediated by a dysregulation of the systemic Treg immune response, shown by decreased levels of circulating CD4+/Foxp3+Treg cells. Our experimental data support the idea that TGF-? exerts anti-inflammatory actions in the kidney and suggest that it is not an optimal therapeutic target.