Abstract
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Developmental Medicine and Child Neurology |
| Vol/bind | 46 |
| Udgave nummer | 3 |
| Sider (fra-til) | 179-83 |
| Antal sider | 4 |
| ISSN | 0012-1622 |
| Status | Udgivet - 2004 |
| Udgivet eksternt | Ja |
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I: Developmental Medicine and Child Neurology, Bind 46, Nr. 3, 2004, s. 179-83.
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - ADHD: increased dopamine receptor availability linked to attention deficit and low neonatal cerebral blood flow
AU - Lou, Hans
AU - Rosa, Pedro
AU - Pryds, Ole
AU - Karrebaek, Hanne
AU - Lunding, Jytte
AU - Cumming, Paul
AU - Gjedde, Albert
PY - 2004
Y1 - 2004
N2 - Attention-deficit-hyperactivity disorder (ADHD), while largely thought to be a genetic disorder, has environmental factors that appear to contribute significantly to the aetiopathogenesis of the disorder. One such factor is pretern birth with vulnerable cerebrovascular homeostasis. We hypothesised that cerebral ischaemia at birth could contribute to persistent deficient dopaminergic neurotransmission, which is thought to be the pathophysiological basis of the disorder. We examined dopamine D(2/3) receptor binding with positron emission tomography (PET) using [11C] raclopride as a tracer, and continuous reaction times (RT) with a computerized test of variables (TOVA) in six adolescents (12-14 years of age, one female) who had been examined with cerebral blood flow (CBF) measurements at preterm birth and had a subsequent history of attention deficit. We found that high dopamine receptor availability ('empty receptors') was linked with increased RT and RT variability, supporting the concept of a dopaminergic role in symptomatology. High dopamine receptor availability was predicted by low neonatal CBF, supporting the hypothesis of cerebral ischaemia as a contributing factor in infants susceptible to ADHD.
AB - Attention-deficit-hyperactivity disorder (ADHD), while largely thought to be a genetic disorder, has environmental factors that appear to contribute significantly to the aetiopathogenesis of the disorder. One such factor is pretern birth with vulnerable cerebrovascular homeostasis. We hypothesised that cerebral ischaemia at birth could contribute to persistent deficient dopaminergic neurotransmission, which is thought to be the pathophysiological basis of the disorder. We examined dopamine D(2/3) receptor binding with positron emission tomography (PET) using [11C] raclopride as a tracer, and continuous reaction times (RT) with a computerized test of variables (TOVA) in six adolescents (12-14 years of age, one female) who had been examined with cerebral blood flow (CBF) measurements at preterm birth and had a subsequent history of attention deficit. We found that high dopamine receptor availability ('empty receptors') was linked with increased RT and RT variability, supporting the concept of a dopaminergic role in symptomatology. High dopamine receptor availability was predicted by low neonatal CBF, supporting the hypothesis of cerebral ischaemia as a contributing factor in infants susceptible to ADHD.
M3 - Journal article
C2 - 14995087
SN - 0012-1622
VL - 46
SP - 179
EP - 183
JO - Developmental Medicine and Child Neurology
JF - Developmental Medicine and Child Neurology
IS - 3
ER -