TY - JOUR
T1 - In vivo serotonin 5HT2A receptor binding and personality traits in healthy subjects
T2 - A positron emission tomography study
AU - Moresco, F. M.
AU - Dieci, M.
AU - Vita, A.
AU - Messa, C.
AU - Gobbo, C.
AU - Galli, L.
AU - Rizzo, G.
AU - Panzacchi, A.
AU - De Peri, L.
AU - Invernizzi, G.
AU - Fazio, F.
PY - 2002
Y1 - 2002
N2 - Using positron emission tomography (PET) and [11C]raclopride, an association between striatal D2 dopamine receptors and emotional detachment has been recently reported. Several laboratory findings indicate a link between the serotoninergic system and harm avoidance. In this study we investigated, in a group of healthy volunteers, the relationship between the in vivo binding of 3-(2′-[18F]fluoroethyl)spiperone ([18F]FESP) to cortical 5HT2 and striatal D2 receptors and three personality dimensions, i.e., "novelty seeking," "reward dependence," and "harm avoidance." Eleven healthy volunteers were evaluated by means of the Tridimensional personality Questionnaire (C. R. Cloninger, 1987, Arch. Gen. Psychiatry 44: 573-588.) and underwent a PET scan with [18F]FESP. Harm avoidance showed a significant inverse correlation with [18F]FESP binding in the cerebral cortex, particularly in the frontal cortex (R2 = -0.709, P = 0.0145) and left parietal cortex (R = -0.629, P = 0.038) but not in the basal ganglia (r = -0.176, P = 0.651). Similar results were obtained using SPM at a P threshold of 0.05. No significant correlation was observed with novelty seeking or reward dependence. In the cerebral cortex, high values of [18F]FESP binding values are associated with a high tendency to avoid danger, indicating involvement of the serotoninergic system and, in particular, 5HT2A receptors, in this trait of personality. The results of this as well as of previous studies on personality dimensions indicate the existence of a relationship between behavioral and neurobiological factors. In addition these results support the concept that the variability of PET data may be explained by neurochemical differences related to the prevalence of specific personality traits.
AB - Using positron emission tomography (PET) and [11C]raclopride, an association between striatal D2 dopamine receptors and emotional detachment has been recently reported. Several laboratory findings indicate a link between the serotoninergic system and harm avoidance. In this study we investigated, in a group of healthy volunteers, the relationship between the in vivo binding of 3-(2′-[18F]fluoroethyl)spiperone ([18F]FESP) to cortical 5HT2 and striatal D2 receptors and three personality dimensions, i.e., "novelty seeking," "reward dependence," and "harm avoidance." Eleven healthy volunteers were evaluated by means of the Tridimensional personality Questionnaire (C. R. Cloninger, 1987, Arch. Gen. Psychiatry 44: 573-588.) and underwent a PET scan with [18F]FESP. Harm avoidance showed a significant inverse correlation with [18F]FESP binding in the cerebral cortex, particularly in the frontal cortex (R2 = -0.709, P = 0.0145) and left parietal cortex (R = -0.629, P = 0.038) but not in the basal ganglia (r = -0.176, P = 0.651). Similar results were obtained using SPM at a P threshold of 0.05. No significant correlation was observed with novelty seeking or reward dependence. In the cerebral cortex, high values of [18F]FESP binding values are associated with a high tendency to avoid danger, indicating involvement of the serotoninergic system and, in particular, 5HT2A receptors, in this trait of personality. The results of this as well as of previous studies on personality dimensions indicate the existence of a relationship between behavioral and neurobiological factors. In addition these results support the concept that the variability of PET data may be explained by neurochemical differences related to the prevalence of specific personality traits.
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U2 - 10.1006/nimg.2002.1239
DO - 10.1006/nimg.2002.1239
M3 - Article
C2 - 12414286
AN - SCOPUS:0036432115
VL - 17
SP - 1470
EP - 1478
JO - NeuroImage
JF - NeuroImage
SN - 1053-8119
IS - 3
ER -