http://www.cnr.it/ontology/cnr/individuo/prodotto/ID10377

In vivo PET study of 5HT(2A) serotonin and D(2) dopamine dysfunction in drug-naive obsessive-compulsive disorder. (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

In vivo PET study of 5HT(2A) serotonin and D(2) dopamine dysfunction in drug-naive obsessive-compulsive disorder. (Articolo in rivista) (literal)

Anno

2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.neuroimage.2008.04.233 (literal)

Alternative label

Perani D. 1,2,3, Garibotto V. 1,2, Gorini A. 1, Moresco R.M. 2,4,5, Henin M. 3, Panzacchi A. 2, Matarrese M. 4, Carpinelli A. 4, Bellodi L. 1, 2,3, Fazio F. 2,4,5 (2008)
In vivo PET study of 5HT(2A) serotonin and D(2) dopamine dysfunction in drug-naive obsessive-compulsive disorder.
in NeuroImage (Orlando Fla., Print); Elsevier, Amsterdam (Paesi Bassi)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Perani D. 1,2,3, Garibotto V. 1,2, Gorini A. 1, Moresco R.M. 2,4,5, Henin M. 3, Panzacchi A. 2, Matarrese M. 4, Carpinelli A. 4, Bellodi L. 1, 2,3, Fazio F. 2,4,5 (literal)

Pagina inizio

306 (literal)

Pagina fine

314 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

42 (literal)

Rivista

NeuroImage (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

Corresponding author: V. Garibotto (garibotto.valentina@hsr.it) I.F.: 5.694 (literal)

Note

ISI Web of Science (WOS) (literal)
PubMe (literal)
Scopus (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1. Vita-Salute San Raffaele University, Milan, Italy 2. San Raffaele Scientific Institute, Milan, Italy 3. National Institute of Neuroscience, Milan, Italy 4. IBFM-CNR, Milan, Italy 5. University of Milano-Bicocca, Milan, Italy (literal)

Titolo

In vivo PET study of 5HT(2A) serotonin and D(2) dopamine dysfunction in drug-naive obsessive-compulsive disorder. (literal)

Abstract

There are several lines of evidence, the majority indirect, suggesting that changes in serotonergic or dopaminergic neurotransmission may contribute to the pathogenesis of obsessive-compulsive disorder (OCD). We evaluated the co-occurrence of serotonergic and dopaminergic dysfunctions in OCD subjects, all drug-naive, with no co-morbidity and homogeneous for symptoms. Each subject underwent two positron emission tomography (PET) scans to measure in vivo both serotonin (5-HT(2A)) and dopamine (D(2)) receptor distribution. For this, we used [(11)C]MDL and [(11)C]Raclopride, highly selective antagonists of 5-HT(2A) and D(2) receptors, respectively. The comparison with a control group was carried out using both voxel-wise (SPM2) and regions of interest (ROI) approaches. There was a significant reduction of 5-HT(2A) receptor availability in frontal polar, dorsolateral, and medial frontal cortex, as well as in parietal and temporal associative cortex of OCD patients. We also found a significant correlation between 5-HT(2A) receptor availability in orbitofrontal and dorsolateral frontal cortex and clinical severity, suggesting a specific role for serotonin in determining the OCD symptoms. There was also a significant reduction of [(11)C]Raclopride uptake in the whole striatum, particularly in the ventral portion, possibly reflecting endogenous dopaminergic hyperactivity. The co-existence of serotonergic and dopaminergic dysfunction in the same homogeneous group of drug-naive OCD patients provides in vivo evidence for the complex molecular mechanisms of OCD, and represents the basis for further studies on the effect of therapeutic agents with specific modulatory effects on these neurotransmission systems. (literal)

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