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Proteomics

Cardiac fibrosis induced by urokinase plasminogen activator requires plasminogen

Published in Proteomics Weekly, August 7th, 2006

Plasminogen is necessary for urokinase plasminogen activator(uPA)-induced cardiac fibrosis and macrophage accumulation, but uPA receptor is not.

Investigators writing in the Journal of Biological Chemistry report, "Human hearts with end-stage failure and fibrosis have macrophage accumulation and elevated plasminogen activator activity. However, the mechanisms that link macrophage accumulation and plasminogen activator activity with cardiac fibrosis are unclear."

"We previously reported that mice with macrophage-targeted overexpression of urokinase plasminogen activator (SR-uPA+/0 mice) develop cardiac macrophage accumulation by 5...

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