Radioprotection of the rat parotid gland by cAMP

Most earlier studies showing a radioprotective effect by cAMP show only slight degrees of protection. The present study demonstrates a substantial protective effect (DMF, 1.63) of exogenously administered cAMP on the rat parotid gland and supports the mechanism suggested previously for protection afforded the parotid glands by the beta-adrenergic agonist isoproterenol, which is known to elevate endogenous intracellular cAMP.