Abstract |
Extracellular cyclophilin A (CyPA) and its receptor Extracellular Matrix Metalloproteinase Inducer ( EMMPRIN, CD147) modulate inflammatory processes beyond metalloproteinase ( MMP) activity. Recently, we have shown that CyPA and CD147 are upregulated in patients with inflammatory cardiomyopathy. Here we investigate the role of CyPA and CD147 in murine coxsackievirus B3 (CVB3)-induced myocarditis. CVB3-infected CyPA(-/-) mice (129S6/SvEv) revealed a significantly reduced T-cell and macrophage recruitment at 8 days p.i. compared to wild-type mice. In A.BY/SnJ mice, treatment with the cyclophilin-inhibitor NIM811 was associated with a reduction of inflammatory lesions and MMP-9 expression but with enhanced virus replication 8 days p.i. At 28 days p.i. the extent of lesion areas was not affected bei NIM811, whereas the collagen content was reduced. Initiation of NIM811-treatment on day 12 (after an effective virus defense) resulted in an even more pronounced reduction of myocardial fibrosis. In conclusion, in CVB3-induced myocarditis CyPA is important for macrophage and T cell recruitment and effective virus defense and may represent a pharmacological target to modulate myocardial remodeling in myocarditis.
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Authors | Peter Seizer, Karin Klingel, Martina Sauter, Dirk Westermann, Carmen Ochmann, Tanja Schönberger, Rebecca Schleicher, Konstantinos Stellos, Eva-Maria Schmidt, Oliver Borst, Boris Bigalke, Reinhard Kandolf, Harald Langer, Meinrad Gawaz, Andreas E May |
Journal | Journal of molecular and cellular cardiology
(J Mol Cell Cardiol)
Vol. 53
Issue 1
Pg. 6-14
(Jul 2012)
ISSN: 1095-8584 [Electronic] England |
PMID | 22446162
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2012 Elsevier Ltd. All rights reserved. |
Chemical References |
- Basigin
- Cyclosporine
- (melle-4)cyclosporin
- Matrix Metalloproteinase 9
- Cyclophilin A
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Topics |
- Animals
- Basigin
(metabolism)
- Cell Line
- Coxsackievirus Infections
(immunology)
- Cyclophilin A
(antagonists & inhibitors, deficiency, metabolism)
- Cyclosporine
(pharmacology)
- Endomyocardial Fibrosis
(etiology, immunology, pathology)
- Enterovirus B, Human
(immunology)
- Humans
- Macrophages
(drug effects, immunology)
- Matrix Metalloproteinase 9
(metabolism)
- Mice
- Mice, 129 Strain
- Mice, Knockout
- Monocytes
(drug effects, immunology)
- Myocarditis
(complications, immunology, virology)
- T-Lymphocytes
(drug effects, immunology)
- Ventricular Remodeling
(drug effects)
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