ibogaine/atrophy

Ibogaine is a tremorigenic hallucinogen that has been proposed for clinical use in treating addiction. We previously reported that ibogaine, administered systemically, produces degeneration of a subset of Purkinje cells in the cerebellum, primarily within the vermis. Ablation of the inferior olive

Ibogaine, an indole alkaloid that causes hallucinations, tremor, and ataxia, produces cerebellar neurotoxicity in rats, manifested by degeneration of Purkinje cells aligned in narrow parasagittal bands that are coextensive with activated glial cells. Harmaline, a closely related alkaloid that

The indole alkaloids ibogaine and harmaline are beta-carboline derivatives that cause both hallucinations and tremor. Reports that ibogaine may have potent anti-addictive properties have led to initiatives that it be tested for the treatment of opiate and cocaine addiction. In this study,

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

Ibogaine causes degeneration of Purkinje cells (PKCs), presumably via activation of neurons in the inferior olive leading to release of glutamate at climbing fiber terminals. Following ibogaine administration, some Purkinje cells express NADPH-diaphorase and neuronal NOS (nNOS), neither of which is

Ibogaine is claimed to be an effective treatment for opiate and stimulant addiction. O'Hearn and Molliver, however, showed that ibogaine causes degeneration of cerebellar Purkinje cells in rats. The present study re-examined cerebellar responses to the high doses of ibogaine used by O'Hearn and

Acute administration of high doses of ibogaine (IBG) to the male rat results in degeneration of Purkinje cells and reactive gliosis in the cerebellar vermis. We examined whether acute and chronic administration of IBG to male and female rats results in gliosis as determined by quantification of the

Scrapie is a fatal neurodegenerative disease of sheep and goats. The precise details of neuronal and neurite degeneration in scrapie-infected animals remain unknown. Using specific silver staining methods, we compared the neurodegeneration caused by treatment of rats with kainic acid (KA) or

Two anionic fluorescein derivatives can be used for the simple and definitive localization of neuronal degeneration in brain tissue sections. Initial work on the first generation fluorochrome, Fluoro-Jade, demonstrated the utility of this compound for the detection of neuronal degeneration induced

Ibogaine (IBO) is an indole alkaloid from the West African shrub, Tabernanthe iboga. It is structurally related to harmaline, and both these compounds are rigid analogs of melatonin. IBO has both psychoactive and stimulant properties. In single-blind trials with humans, it ameliorated withdrawal

Endogenous excitatory amino acids (EAAs) such as glutamic or aspartic acids have been proposed to mediate the brain damage to EAA receptor-rich brain sites that is caused by a variety of external toxic agents (glutamic acid, domoic acid, kainic acid, ibogaine, trimethyltin (TMT), 3-nitropropionic

Type 1 inositol 1,4,5-trisphosphate receptors are phosphorylated by cyclic-AMP-dependent protein kinase A at serines 1589 and 1755, with serine 1755 phosphorylation greatly predominating in the brain. Inositol 1,4,5-trisphosphate receptor protein kinase A phosphorylation augments Ca(2+) release. To

Traditional methods for evaluating neurodegeneration include variations of Nauta's selective silver-staining techniques. The Fluoro-Jade (FJ) method applies a novel fluorescent, anionic stain for localizing degenerating neurons. FJ has produced comparable results to the silver methods, when both

The experiments strongly suggested that the reason why Purkinje cells die so easily after global brain ischemia relates to deficiencies in aldolase C and EAAT4 that allow them to survive pathologically intense synaptic input from the inferior olive after the restoration of blood flow. This