Polymorphisms of the serotonin transporter gene are known to be associated with some personality traits measured by means of various psychological inventories. In the present work we attempted to find an association between genetic variants of serotonin transporter (loci VNTR-17 and 5-HTTLPR) and psychological traits scored by the MMPI inventory in 125 mentally healthy donors. No statistically significant differences in personality traits were found between carriers of differentVNTR-17 genotypes. At locus 5-HTTLPR, significant between-genotype differences were revealed on the Schizophrenia scale (F= 3.49; P = 0.034) and on the validity scale F (F = 3.24; P = 0.042). The ss genotype carriers had the lowest scores on these scales. The score on the Psychopathic Deviate scale was significantly lower in the carriers of the ssgenotype than in the combined group of the carriers of genotypes lland ls(t= 2.07; P = 0.041). The differences on the validity scale K between the carriers of the ll and ssgenotypes were also statistically significant (t= 2.49; P = 0.015). These results suggest that polymorphism of the serotonin transporter gene may be associated with the expression of schizoid traits (namely, social introversion, internal tension, bizarre thoughts and actions) in mentally healthy individuals. In the context of social adaptation, the personality profile configuration and data of statistical analysis indicate that the carriers of the ss genotype are more inclined to observe social norms than the carriers of the lland ls genotypes.
Russian Journal of Genetics – Springer Journals
Published: Oct 7, 2004
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