Effect of recombinant human activated protein C on apoptosis-related proteins

Published: 10 August 2009
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The recombinant human activated protein C (rhAPC) has been reported to reduce mortality in patients with severe sepsis. An anti-apoptotic effect of rhAPC in sepsis is known, but the mechanism through which it acts on the apoptotic pathway is still unclear. Therefore, immunopositivity of the apoptosis-related proteins Bcl-2, an anti-apoptotic protein, c-myc, a proliferative protein, p-21 and p-53, two apoptotic proteins, was determined after rhAPC treatment in a mouse sepsis model. Sepsis was induced by Escherichia coli endotoxin injection. Increased neutrophil infiltration and immunoreactivity to p53 and p21 were observed in the group with sepsis and these immunoreactivities were decreased by rhAPC treatment. In the sepstic group; immunopositivity of Bcl-2 and c-myc was mild and moderate, respectively. In conclusion; p21- and p53-mediated apoptosis was increased in the sepsis model, and for the first time it has been shown that rhAPC decreases sepsisinduced apoptosis resulting from increased p21 and p53 proteins.

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Sakar, A., Vatansever, S., Sepit, L., Ozbilgin, K., & Yorgancioglu1, A. (2009). Effect of recombinant human activated protein C on apoptosis-related proteins. European Journal of Histochemistry, 51(2), 103–110. https://doi.org/10.4081/1131