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Molecular Mechanisms and Treatments of Dependence and Neurotoxicity of Amphetamine-Type Stimulants

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 2916

Special Issue Editor


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Guest Editor
Department of Pharmaceutical Sciences/College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA
Interests: methamphetamine use disorder; methamphetamine neurotoxicity; the role of protein-ubiquitin ligase parkin in methamphetamine use disorder and neurotoxicity; neurodegeneration and neuroprotection

Special Issue Information

Dear Colleagues,

Amphetamine-type stimulants (ATSs) such as methamphetamine and 3,4-methylene-dioxymethamphetamine (MDMA, Ecstasy) are highly addictive drugs with neurotoxic properties. The use of ATSs is a global and growing phenomenon, and in recent years there has been a pronounced increase in the production and use of ATSs worldwide. Preclinical studies have demonstrated that, in addition to having the potential for abuse, ATS drugs have a potential to elicit neurotoxic effects, particularly at high doses. There are no FDA-approved pharmacotherapies to treat ATS dependence, and there are no appropriate therapeutic strategies to manage the neurological and neuropsychological problems associated with ATS abuse. This Special Issue will review current knowledge on molecular mechanisms underlying the dependence and neurotoxicity of methamphetamine, MDMA, and other ATSs, as well as developing strategies to treat ATS dependence and resultant neurotoxicity. The emphasis will be placed on methamphetamine, as its abuse in the United States has been increasing, together with the deaths from methamphetamine overdose. Consequently, the development of effective pharmacotherapy for methamphetamine dependence and the neurotoxic effects of this drug is a high priority.

Prof. Dr. Anna Moszczynska
Guest Editor

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Keywords

  • Amphetamine-type stimulants
  • Amphetamine-type stimulant dependence
  • Amphetamine-type-stimulant neurotoxicity
  • Amphetamine-type-stimulant-induced oxidative damage, degeneration, and inflammation
  • Therapies for amphetamine-type-stimulant dependence
  • Methamphetamine use disorder
  • Methamphetamine toxicities
  • Emerging drug targets for pharmacotherapies to treat amphetamine-type-stimulant dependence and neurotoxicity

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Published Papers (1 paper)

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Research

23 pages, 3127 KiB  
Article
Caveolin-1 Expression in the Dorsal Striatum Drives Methamphetamine Addiction-Like Behavior
by Yosef Avchalumov, Alison D. Kreisler, Wulfran Trenet, Mahasweta Nayak, Brian P. Head, Juan C. Piña-Crespo and Chitra D. Mandyam
Int. J. Mol. Sci. 2021, 22(15), 8219; https://doi.org/10.3390/ijms22158219 - 30 Jul 2021
Cited by 2 | Viewed by 2473
Abstract
Dopamine D1 receptor (D1R) function is regulated by membrane/lipid raft-resident protein caveolin-1 (Cav1). We examined whether altered expression of Cav1 in the dorsal striatum would affect self-administration of methamphetamine, an indirect agonist at the D1Rs. A lentiviral construct expressing Cav1 (LV-Cav1) or containing [...] Read more.
Dopamine D1 receptor (D1R) function is regulated by membrane/lipid raft-resident protein caveolin-1 (Cav1). We examined whether altered expression of Cav1 in the dorsal striatum would affect self-administration of methamphetamine, an indirect agonist at the D1Rs. A lentiviral construct expressing Cav1 (LV-Cav1) or containing a short hairpin RNA against Cav1 (LV-shCav1) was used to overexpress or knock down Cav1 expression respectively, in the dorsal striatum. Under a fixed-ratio schedule, LV-Cav1 enhanced and LV-shCav1 reduced responding for methamphetamine in an extended access paradigm compared to LV-GFP controls. LV-Cav1 and LV-shCav1 also produced an upward and downward shift in a dose–response paradigm, generating a drug vulnerable/resistant phenotype. LV-Cav1 and LV-shCav1 did not alter responding for sucrose. Under a progressive-ratio schedule, LV-shCav1 generally reduced positive-reinforcing effects of methamphetamine and sucrose as seen by reduced breakpoints. Western blotting confirmed enhanced Cav1 expression in LV-Cav1 rats and reduced Cav1 expression in LV-shCav1 rats. Electrophysiological findings in LV-GFP rats demonstrated an absence of high-frequency stimulation (HFS)-induced long-term potentiation (LTP) in the dorsal striatum after extended access methamphetamine self-administration, indicating methamphetamine-induced occlusion of plasticity. LV-Cav1 prevented methamphetamine-induced plasticity via increasing phosphorylation of calcium calmodulin kinase II, suggesting a mechanism for addiction vulnerability. LV-shCav1 produced a marked deficit in the ability of HFS to produce LTP and, therefore, extended access methamphetamine was unable to alter striatal plasticity, indicating a mechanism for resistance to addiction-like behavior. Our results demonstrate that Cav1 expression and knockdown driven striatal plasticity assist with modulating addiction to drug and nondrug rewards, and inspire new strategies to reduce psychostimulant addiction. Full article
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