“ Inosine , a purine that has recently been shown to be a competitive inhibitor of [3H] diazepam binding in vitro, antagonizes caffeine-induced seizures, while 7-methyl-inosine, a purine that lacks receptor binding inhibitory activity, has no effect on seizures.”
“Since the benzodiazepines, inosine , caffeine, and pentylenetetrazol all competitively inhibit [3H] diazepam binding and have marked effects on inducing or antagonizing seizures, further study of this receptor-ligand system may provide additional insights that concern possible biochemical mechanisms of seizures.”