ArticleDrug and alcohol dependence2021
Gut and brain profiles that resemble pre-motor and early-stage Parkinson's disease in methamphetamine self-administering rats.
Article in Drug and alcohol dependence, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 9 citations in OpenAlex.
- Attenuation of cue-induced heroin-seeking by the atypical antidepressant mirtazapine.Drug and alcohol dependence reports · 2026Article
- Trail Making Test performance in early abstinence from methamphetamine: human evidence for a drug-associated Parkinsonian-like phenotype.Frontiers in psychiatry · 2026Article
- Neuropharmacological Evidence Implicating Drug-Induced Glutamate Receptor Dysfunction in Affective and Cognitive Sequelae of Subchronic Methamphetamine Self-Administration in Mice.International journal of molecular sciences · 2024Article
- The Common Denominators of Parkinson's Disease Pathogenesis and Methamphetamine Abuse.Current neuropharmacology · 2024Review
- Repeated Methamphetamine Administration Results in Axon Loss Prior to Somatic Loss of Substantia Nigra Pars Compacta and Locus Coeruleus Neurons in Male but Not Female Mice.International journal of molecular sciences · 2023Article
- Acute and protracted abstinence from methamphetamine bidirectionally changes intrinsic excitability of indirect pathway spiny projection neurons in the dorsomedial striatum.Scientific reports · 2022Article
- Atypical Parkinsonism: Methamphetamine may play a role.Clinical case reports · 2022Article
- Differential vulnerability of locus coeruleus and dorsal raphe neurons to chronic methamphetamine-induced degeneration.Frontiers in cellular neuroscience · 2022Article
- Mitochondrial function influences expression of methamphetamine-induced behavioral sensitization.Scientific reports · 2021Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
introductionMethamphetamine is a potent psychomotor stimulant, and methamphetamine abusers are up to three times more likely to develop Parkinson's disease (PD) later in life. Prodromal PD may involve gut inflammation and the accumulation of toxic proteins that are transported from the enteric nervous system to the central nervous system to mediate, in part, the degeneration of dopaminergic projections. We hypothesized that self-administration of methamphetamine in rats produces a gut and brain profile that mirrors pre-motor and early-stage PD.
methodsRats self-administered methamphetamine in daily 3 h sessions for two weeks. Motor function was assessed before self-administration, during self-administration and throughout the 56 days of forced abstinence. Assays for pathogenic markers (tyrosine hydroxylase, glial fibrillary acidic protein (GFAP), α-synuclein) were conducted on brain and gut tissue collected at one or 56 days after cessation of methamphetamine self-administration.
resultsMotor deficits emerged by day 14 of forced abstinence and progressively worsened up to 56 days of forced abstinence. In the pre-motor stage, we observed increased immunoreactivity for GFAP and α-synuclein within the ganglia of the myenteric plexus in the distal colon. Increased α-synuclein was also observed in the substantia nigra pars compacta. At 56 days, GFAP and α-synuclein normalized in the gut, but the accumulation of nigral α-synuclein persisted, and the dorsolateral striatum exhibited a significant loss of tyrosine hydroxylase.
conclusionThe pre-motor profile is consistent with gut inflammation and gut/brain α-synuclein accumulation associated with prodromal PD and the eventual development of the neurological disease.
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