ArticlePsychopharmacology2019
Effects of repeated treatment with methcathinone, mephedrone, and fenfluramine on intracranial self-stimulation in rats.
Article in Psychopharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
11 citing papers in PubMed, 23 citations in OpenAlex.
- From emergence to replacement: The evolution of 3-methylmethcathinone (3-MMC) and its substitutes in the Dutch drug market (2012-2024).Addiction (Abingdon, England) · 2026Observational
- Up-regulation of Oxidative Burden, NFκB, and D1 Receptor Is Involved in the Neuropsychotoxic Behaviors Induced by Camfetamine, a New Psychoactive Substance; Involvements of the Neuromodulation by GPx-1 Gene.Neurochemical research · 2025Article
- Comparative Assessment of the Addictive Potential of Synthetic Cathinones by Zebrafish Conditioned Place Preference (CPP) Paradigm.Life (Basel, Switzerland) · 2024Article
- (2-Aminopropyl)benzo[β]thiophenes (APBTs) are novel monoamine transporter ligands that lack stimulant effects but display psychedelic-like activity in mice.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022Article
- Central Effects of the Designer Drug Mephedrone in Mice-Basic Studies.Brain sciences · 2022Article
- Vulnerability factors for mephedrone-induced conditioned place preference in rats-the impact of sex differences, social-conditioning and stress.Psychopharmacology · 2021Article
- Insight into Glutamatergic Involvement in Rewarding Effects of Mephedrone in Rats: In Vivo and Ex Vivo Study.Molecular neurobiology · 2021Article
- Molecular Mechanisms of Action of Novel Psychoactive Substances (NPS). A New Threat for Young Drug Users with Forensic-Toxicological Implications.Life (Basel, Switzerland) · 2021Review
- Designer drugs: mechanism of action and adverse effects.Archives of toxicology · 2020Review
- Effects of acute and repeated treatment with serotonin 5-HT2A receptor agonist hallucinogens on intracranial self-stimulation in rats.Experimental and clinical psychopharmacology · 2019Article
- Determinants of opioid abuse potential: Insights using intracranial self-stimulation.Peptides · 2019Review
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
rationaleSynthetic cathinones constitute a class of abused drugs that can act at dopamine, norepinephrine, and serotonin transporters (DAT, NET, and SERT, respectively). Intracranial self-stimulation (ICSS) is a preclinical procedure that can be used to evaluate abuse potential of drugs, and prior studies have indicated that abuse-related ICSS effects of monoamine-transporter substrates, including some synthetic cathinones, are positively correlated with drug selectivity for DAT vs. SERT. Abuse potential of drugs can also be influenced by regimens of repeated drug exposure, but the role of repeated exposure on abuse-related ICSS effects of synthetic cathinones has not been examined.
objectivesThis study used ICSS to evaluate effects of repeated treatment with the DAT>SERT substrate methcathinone, the DAT<SERT substrate fenfluramine, and the DAT≈SERT substrate mephedrone.
methodsMale Sprague-Dawley rats were trained in a frequency-rate ICSS procedure, and different groups were used to evaluate effects of methcathinone, mephedrone, and fenfluramine before, during, and after regimens of repeated treatment with the designated drug.
resultsBefore repeated treatment, methcathinone produced dose-dependent and abuse-related ICSS facilitation, fenfluramine produced dose-dependent ICSS depression, and mephedrone produced mixed effects that included both facilitation and depression. Chronic treatment produced no change in effects of methcathinone, but complete tolerance to effects of fenfluramine. For mephedrone, chronic treatment produced partial tolerance to ICSS depression and enhanced expression of ICSS facilitation.
conclusionsRepeated exposure to mixed-action DAT≈SERT substrates such as mephedrone can result in increased abuse potential due to sustained expression of DAT-mediated abuse-related effects and tolerance to SERT-mediated abuse-limiting effects.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.