Impulsivity, Gender, and the Platelet Serotonin Transporter in Healthy Subjects

Overview

Journal Neuropsychiatr Dis Treat

Publisher Dove Medical Press

Specialty Psychiatry

Date 2010 Feb 20

PMID 20169041

Citations 11

Authors

Donatella Marazziti

Stefano Baroni

Irene Masala

Francesca Golia

Giorgio Consoli

Gabriele Massimetti

Michela Picchetti

Mario Catena DellOsso

Gino Giannaccini

Laura Betti

Antonio Lucacchini

Antonio Ciapparelli

Affiliations

Soon will be listed here.

Abstract

The present study explored the possible relationships between impulsivity, gender, and a peripheral serotonergic marker, the platelet serotonin (5-HT) transporter (SERT), in a group of 32 healthy subjects. The impulsivity was measured by means of the Barratt Impulsivity Scale, version 11 (BIS-11), a widely used self-report questionnaire, and the platelet SERT was evaluated by means of the specific binding of (3)H-paroxetine ((3)H-Par) to platelet membranes, according to standardized protocols. The results showed that women had a higher BIS-11 total score than men, and also higher scores of two factors of the same scale: the motor impulsivity and the cognitive complexity. The analysis of the correlations revealed that the density of the SERT proteins, as measured by the maximum binding capacity (B(max)) of (3)H-Par, was significantly and positively related to the cognitive complexity factor, but only in men. Men showed also a significant and negative correlation with the dissociation constant, Kd, of ((3)H-Par) binding, and the motor impulsivity factor. These findings suggest that women are generally more impulsive than men, but that the 5-HT system is more involved in the impulsivity of men than in that of women.

Citing Articles

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