Impulsive-disinhibited personality and serotonin transporter gene polymorphisms: association study in an inmate's sample.
The association between different impulsive-disinhibited personality traits with 5-HTTLPR and 5-HTTVNTR genetic polymorphisms was examined in an imprisoned male sample. Higher scores of the impulsive-disinhibited personality traits tended to be associated with carrying one or two copies of the 5-HTTPLR S allele (S/S homozygous and S/L heterozygous), and carrying two copies of the 5-HTTVNTR 12 allele (12/12 homozygous). Genotype, allele, haplotype and extended genotype distribution between low and high impulsive-disinhibited groups confirmed this association. Allele S and genotypes S/S+S/L at the 5-HTTLPR locus and allele 12 and genotype 12/12 at the 5-HTTVNTR locus were overrepresented in the high scoring group. Accordingly, allele S and allele 12 conferred a trend for risk to be in the high scoring group with an odds ratio (OR) of 1.8 (p < 0.035) and 1.7 (p < 0.014), respectively. In addition, extended genotype distribution shows that those S allele carriers (S/S homozygote and S/L heterozygote) that were also 12/12 homozygote, were overrepresented in the high scoring group (OR = 3.2; p < 0.004). The main risk of being in the high scoring group was assigned to those carrying two copies of the S-12 haplotype (OR = 5.7; p < 0.0007). We discuss the possible relationship between the two genetic serotonin polymorphisms and the personality impulsive-disinhibited traits investigated.
Aluja
Anton
A
Department of Pedagogy and Psychology, University of Lleida, Avada Estudi General 4, Campus de Cappont, 25100 Lleida, Catalonia, Spain. aluja@pip.udl.cat
Garcia
Luis F
LF
Blanch
Angel
A
De Lorenzo
D
D
Fibla
Joan
J
D000328:Adult; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D007175:Impulsive Behavior / Q000235:genetics* / Q000523:psychology*; D015810:Linkage Disequilibrium; D008297:Male; D018598:Minisatellite Repeats / Q000235:genetics; D010551:Personality / Q000235:genetics*; D010552:Personality Assessment; D011110:Polymorphism, Genetic / Q000235:genetics*; D025341:Principal Component Analysis; D011329:Prisoners; D011569:Psychiatric Status Rating Scales; D050486:Serotonin Plasma Membrane Transport Proteins / Q000235:genetics*
D050486:Serotonin Plasma Membrane Transport Proteins