several activators of adenylate cyclase , including prostaglandin e1 , forskolin , and cholera toxin , as well as the phosphodiesterase inhibitor isobutylmethylxanthine and the camp analog dibutyryl camp , shared the ability to cause a dramatic and sustained increase in il-6 mrna levels in human fs-4 fibroblasts .
C0001455
camp
C0012054
dibutyryl camp