Involvement of intracellular cAMP in epirubicin-induced vascular endothelial cell injury

We investigated the involvement of intracellular cAMP in endothelial cell injury induced by epirubicin. Epirubicin-induced decrease in cell viability and increase in caspase-3/7 activity were reversed by a cAMP analog dibutyryl cAMP (DBcAMP) or an activator of adenylate cyclase forskolin concomitant...

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Main Authors: Takaaki Yamada (Author), Mitsuyo Ueda (Author), Nobuaki Egashira (Author), Nina Zukeyama (Author), Jun Kuwahara (Author), Satohiro Masuda (Author)
Format: Book
Published: Elsevier, 2016-01-01T00:00:00Z.
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Summary:We investigated the involvement of intracellular cAMP in endothelial cell injury induced by epirubicin. Epirubicin-induced decrease in cell viability and increase in caspase-3/7 activity were reversed by a cAMP analog dibutyryl cAMP (DBcAMP) or an activator of adenylate cyclase forskolin concomitant with a phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine. Moreover, epirubicin-induced elevation of lipid peroxide levels was attenuated by DBcAMP. Interestingly, the exposure of epirubicin decreased intracellular cAMP levels before the onset of epirubicin-induced production of lipid peroxidation. These results suggest that intracellular cAMP plays an important role in epirubicin-induced endothelial cell injury.
Item Description:1347-8613
10.1016/j.jphs.2015.12.010