Blockade of p38 MAPK inhibits chronic allograft vasculopathy

Transplantation
Robert OllingerRaimund Margreiter

Abstract

Long-term survival after solid-organ transplantation is hampered by chronic changes in the arteries of the grafts, called chronic allograft vasculopathy (CAV). The lesions consist mainly of proliferating vascular smooth muscle cells that cause narrowing of the vessels; these lesions can develop within a few months. There is no effective treatment to prevent CAV. We previously noted that the pharmacological inhibition of p38 mitogen-activated protein kinase (MAPK) suppresses the proliferation of vascular smooth muscle cells. We hypothesized that in vivo inhibition of p38 MAPK in mice bearing allogeneic aortic allografts would prevent CAV. We here report that blockade of p38 MAPK, a signaling molecule involved in cell division, apoptosis, and cell death, markedly suppresses CAV. Given recent data indicating that inhibition of p38 MAPK is a promising approach for the treatment of autoimmune diseases plus our present findings, p38 MAPK blockade for CAV seems a reasonable approach to consider for clinical application.

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Citations

Mar 19, 2011·Current Opinion in Organ Transplantation·Nicolas ChatauretThierry Hauet
May 2, 2008·American Journal of Physiology. Renal Physiology·Carole DoucetJean Michel Goujon

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