The DOI matches its Crossref record; 75 of the 80 references it cites were found in a registry or an index.
Reduced midbrain dopamine transporter binding in male adolescents with attention-deficit/hyperactivity disorder: Association between striatal dopamine markers and motor hyperactivity
Abstract
Background The hypothesis that altered dopamine transmission underlies hyperactive-inattentive behavior in children with attention-deficit/hyperactivity disorder (ADHD) is based on genetic studies and the efficacy of psychostimulants. Most of previous positron emission tomography (PET) and single photon emission tomography (SPET) studies have shown altered binding of dopamine markers in the basal ganglia. Yet, the functional role of the neurochemical disturbances are poorly understood. The purpose of our study was to examine dopamine transporter (DAT) and dopamine D2 receptor (D2R) binding in adolescents with ADHD and to search for its relationship with cognitive functions as well as locomotor hyperactivity.Methods Twelve adolescents with ADHD and 10 young adults were examined with PET using the selective radioligands [11C]PE2I and [11C]raclopride, indexing DAT and D2R density. The simplified reference tissue model was used to calculate binding potential (BP) values. Attention and motor behavior were investigated with a continuous performance task (CPT) and motion measurements.Results The BP value for [11C]PE2I and [11C]raclopride in the striatum of children with ADHD did not differ from that of the young adult control subjects. In the midbrain, however, the BP values for DAT were significantly lower (16%; p = .03) in children with ADHD. Dopamine D2 receptor binding in the right caudate nucleus correlated significantly with increased motor activity (r = .70, p = .01).Conclusions The lower BP values for DAT in the midbrain suggest that dopamine signaling in subjects with ADHD is altered. Altered dopamine signaling might have a causal relationship to motor hyperactivity and might be considered as a potential endophenotype of ADHD.
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“However, DAT knockout mice provide an extreme model because only a mild reduction in midbrain DAT binding has been seen in human adolescents with ADHD [447], and the model also does not agree with several studies have that found increased DAT in the striatum of children and adults in ADHD [448,449].”
From Reward circuitry dysfunction in psychiatric and neurodevelopmental disorders and genetic syndromes: animal models and clinical findings (2012) · cites this paper as [447]
In the citing paper
“Some studies suggest the reverse.For example, in a PET study Jucaite et al (2005) observed reduced DAT binding in the midbrain of adolescents with ADHD.”
From Understanding the Effects of Stimulant Medications on Cognition in Individuals with Attention-Deficit Hyperactivity Disorder: A Decade of Progress (2011) · cites this paper as Jucaite et al (2005)
In the citing paper
“This question is particularly relevant because findings for both juvenile and adult ADHD have implicated functional and structural midbrain abnormalities in the pathophysiology of the disorder (Ernst et al., 1999; Jucaite et al., 2005; Volkow et al., 2009; Romanos et al., 2010), also consistent with experimental animal models of ADHD (Leo et al., 2003).”
From A positron emission tomography study of nigro-striatal dopaminergic mechanisms underlying attention: implications for ADHD and its treatment (2013) · cites this paper as Jucaite et al., 2005
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Evaluating Dopamine Reward Pathway in ADHD: Clinical Implications
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“The lower D2/D3 receptor and DAT availability in the midbrain, which contains most of the dopamine neurons in the brain, is consistent with findings from prior imaging studies of children and adolescents with ADHD documenting midbrain abnormalities.(5,35) This could underlie the decreased dopamine release reported in…”
Human iPS cell-derived dopaminergic neurons function in a primate Parkinson’s disease model
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Metadata
- Authors
- Jucaite, A., Fernell, E., Halldin, C., Forssberg, H., & Farde, L.
- Affiliations
- Karolinska Institutet (SE)
- Venue
- Biological Psychiatry
- Publisher
- Elsevier BV
- Published
- 2005-02
- Volume
- 57
- Issue
- 3
- Pages
- 229-238
- ISSN
- 0006-3223 (ISSN-L)
- OpenAlex
- W1983779361
- Cited by
- 236
- References
- 80
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 1 · 2023: 6 · 2022: 5 · 2021: 3 · 2020: 9 · 2019: 6 · 2018: 4 · 2017: 9 · 2016: 6 · 2015: 7 · 2014: 14 · 2013: 13 · 2012: 21
- FWCI
- 14.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biological Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Keywords
- attention deficit hyperactivity disorder, dopamine transporter, dopamine D2 receptor, midbrain, striatum, caudate nucleus, motor hyperactivity, adolescents, dopamine signaling, endophenotypes, [11C]PE2I, [11C]raclopride, binding potential
- MeSH terms
- Adolescent, Adult, Age Factors, Attention, Attention Deficit Disorder with Hyperactivity, Brain Mapping, Carbon Isotopes, Child, Corpus Striatum, Humans, Image Processing, Computer-Assisted, Functional Laterality, Magnetic Resonance Imaging, Male, Membrane Glycoproteins, Mesencephalon, Motor Activity, Nerve Tissue Proteins, Neuropsychological Tests, Nortropanes, Protein Binding, Radioligand Assay, Time Factors, Tomography, Emission-Computed, Single-Photon, Linear Models, Receptors, Dopamine D2, Dopamine Antagonists, Raclopride, Membrane Transport Proteins, Positron-Emission Tomography, Dopamine Plasma Membrane Transport Proteins
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