Abstract
The convulsant agent, pentylenetetrazol (PTZ), increased the content of cyclic AMP (cAMP) in rat cortical slices incubated in vitro in physiologic media. This increase was partially reversed by theophylline. The addition of PTZ to maximally effective concentrations of either adenosine or 2-chloroadeosine resulted in a significantly greater than additive augmentation of cAMP accumulation, suggesting that PTZ may produce its effect by enhancing the action of endogenous adenosine. The PTZ response was not antagonized by either diphenylhydantoin, phenobarbital or ethosuximide.
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