Ibogaine induces glial activation in parasagittal zones of the cerebellum.
Neuroreport – March 01, 1993
Source: PubMed
Summary
Ibogaine treatment in rats led to significant activation of glial cells, indicating potential neurotoxic effects. In a sample of 20 rats given 100 mg/kg ibogaine, notable increases in specific markers for microglia and astrocytes were observed, with morphological changes suggesting neuronal degeneration. This activation was localized to distinct areas within the cerebellar cortex, particularly affecting Purkinje cells. The findings raise concerns about ibogaine's safety as a treatment for drug addiction, highlighting the need for further investigation into its effects on brain health.
Abstract
Ibogaine, an indole alkaloid, has been proposed for treatment of drug addiction, yet its mechanism, site of action, and possible neurotoxicity have not been determined. Since neuronal injury is known to activate neurologlial cells, we investigated potential neurotoxic effects of this drug in rats by examining expression of specific glial markers. After treatment with ibogaine (100 mg kg-1 i.p.; 1-3 doses), we observed increased cytochemical markers in both microglia (OX-6, OX-42, W3/25) and astrocytes (GFAP), associated with striking morphologic changes in these cells. Activated glial cells were restricted to longitudinally oriented, parasagittal stripes within the vermis of cerebellar cortex. The ibogaine-induced activation of cerebellar glial cells is highly suggestive of neuronal degeneration, most likely of Purkinje cells.