the influence of naloxone ( a narcotic antagonist ) , bicuculline ( a gaba antagonist ) , phentolamine ( an alpha-blocking agent ) , propranolol ( a beta-adrenergic blocking agent ) , haloperidol ( a dopaminergic blocking agent ) , methysergide ( a serotonergic blocking agent ) and atropine ( a muscarinic blocking agent ) , on the antinociceptive effects induced by carbamazepine , baclofen , pentazocine and morphine , were investigated with a new antinociception test , using the trigeminal pain induced by application of bradykinin onto the tooth pulp of the rat .
C0030873
pentazocine
C0030193
pain