| abstract |
Tetra- and pentacyclic oxindole alkaloids, in particular the alloisopteropodine, isomer A, a pentacyclic oxindole alkaloid, are suitable for the unspecific stimulation of the immunologic system, which has been proved by a substantially percental phagocytosis increase in the granulocytic test according to BRANDT (in vitro), a substantial percental increase of the CL-response in the chemiluminescence test (in vitro) and a high increase of the phagocytosis activity of tissue macrophages of the reticoloendothelial system in the carbon-clearence-test (CCT) according to BIOZZI. |