8-CPT-Cyclic AMP (8-CPT-cAMP) sodium functions dually as a selective activator of cyclic AMP-dependent protein kinase (PKA) and as a potent inhibitor of the cyclic GMP-specific phosphodiesterase (PDE VA), demonstrating an inhibitory concentration (IC 50) of 0.9 μM. Additionally, this compound inhibits PDE III and PDE IV, while significantly activating Epac, showcasing its diverse pharmacological activities [1] [2].

a-Fas and TNF-α/CHX induces neutrophil death rapidly (within 2 h) to at least 90%. The commonly used cAMP analog 8-pCPT-cAMP (0.7 mM) delays TNF- /CHX-induced and a-Fas-induced apoptosis. It is more efficient against TNF- /CHX-induced apoptosis than against a-Fas [2].