ArticleInternational journal of molecular sciences2022
Heterozygote Dopamine Transporter Knockout Rats Display Enhanced Cocaine Locomotion in Adolescent Females.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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Who cites it
7 citing papers in PubMed, 9 citations in OpenAlex.
- Assessment of Addictive Behavior in Rats with Partial Knockout of the Dopamine Transporter Gene.International journal of molecular sciences · 2026Article
- From Neuroadaptation to Neuroprogression: Rethinking Chronic Cocaine Exposure Through a Model of Cocaine-Related Cerebropathy.Journal of clinical medicine · 2026Article
- Disruption of Dopamine Homeostasis by Psychostimulants.Molecular neurobiology · 2026Review
- The Ins and Outs of Dopamine Transporter Gene Manipulation: In Vivo Models of DAT Dysfunction.Advances in neurobiology · 2025Review
- Hypocretin / Orexin Receptor 1 Knockdown in GABA or Dopamine Neurons in the Ventral Tegmental Area Differentially Impact Mesolimbic Dopamine and Motivation for Cocaine.Addiction neuroscience · 2023Article
- Dopamine Transporter Knockout Rats Display Epigenetic Alterations in Response to Cocaine Exposure.Biomolecules · 2023Article
- Dopamine Transporter Deficient Rodents: Perspectives and Limitations for Neuroscience.Biomolecules · 2023Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cocaine is a powerful psychostimulant that is one of the most widely used illicit addictive. The dopamine transporter (DAT) plays a major role in mediating cocaine's reward effect. Decreases in DAT expression increase rates of drug abuse and vulnerability to comorbid psychiatric disorders. We used the novel DAT transgenic rat model to study the effects of cocaine on locomotor behaviors in adolescent rats, with an emphasis on sex. Female rats showed higher response rates to cocaine at lower acute and chronic doses, highlighting a higher vulnerability and perceived gender effects. In contrast, locomotor responses to an acute high dose of cocaine were more marked and sustained in male DAT heterozygous (HET) adolescents. The results demonstrate the augmented effects of chronic cocaine in HET DAT adolescent female rats. Knockout (KO) DAT led to a level of hyperdopaminergia which caused a marked basal hyperactivity that was unchanged, consistent with a possible ceiling effect. We suggest a role of alpha synuclein (α-syn) and PICK 1 protein expressions to the increased vulnerability in female rats. These proteins showed a lower expression in female HET and KO rats. This study highlights gender differences associated with mutations which affect DAT expression and can increase susceptibility to cocaine abuse in adolescence.
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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 Socratic graph.