[Localization of monoamine oxidase (MAO) in the brain of Periplaneta americana (L.) (author's transl)].

A DA-oxidizing MAO has been demonstrated histochemically in DOPAminergic synaptic areas in the brain of the cockroach (Periplaneta americana). However, a 5-HT-oxidizing MAO seems to be absent. The optimal temperature is 37 degrees C, the optimal pH is 7,6. After an abdominal injection the used MAO-inhibitors have no influence on the activity of the MAO. In adding pargyline to the incubating medium there is an inhibition.