[Biogenic amines and their metabolites in brain tumor tissue]

The concentrations of noradrenaline, 5-hydroxytryptamine, dopamine, 5-hydroxyindoleacetic acid and homovanillic acid were determined in the tissue of gliomas, meningiomas and neurinomas of the brain obtained during operations. Significantly higher levels of noradrenaline and 5-hydroxyindoleacetic acid were found in gliomas than in non-malignant tumours.