[Study of catecholamines in the thoracic ganglia and sixth ganglion by gas liquid chromatography (author's transl)].

The gas liquid chromatographic method was used in the investigation of catecholamines in the central nervous system of Periplaneta americana. There is evidence of existence of noradrenaline in the thoracic ganglia and in the sixth abdominal glanglion. Noradrenaline might be the neurotransmitter substance in the nervous system of this insect. Besides noradrenaline, some compounds are present in the nervous system, with different retention times from 1-adrenaline, dopamine and homovanillic acid.