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. 2015 Aug 1:82:61-66.
doi: 10.1016/j.paid.2015.03.012.

A Genetic Variant (COMT) Coding Dopaminergic Activity Predicts Personality Traits in Healthy Elderly

Eszter Kotyuk  1 , Janet Duchek  2 , Denise Head  2 , Anna Szekely  3 , Alison M Goate  4 , David A Balota  2
Affiliations

A Genetic Variant (COMT) Coding Dopaminergic Activity Predicts Personality Traits in Healthy Elderly

Eszter Kotyuk et al. Pers Individ Dif. .

Abstract

Association studies between the NEO five factor personality inventory and COMT rs4680 have focused on young adults and the results have been inconsistent. However, personality and cortical changes with age may put older adults in a more sensitive range for detecting a relationship. The present study examined associations of COMT rs4680 and personality in older adults. Genetic association analyses were carried out between the NEO and the targeted COMT rs4680 in a large, well-characterized sample of healthy, cognitively normal older adults (N = 616, mean age = 69.26 years). Three significant associations were found: participants with GG genotype showed lower mean scores on Neuroticism (p = 0.039) and higher scores on Agreeableness (p = 0.020) and Conscientiousness (p = 0.006) than participants with AA or AG genotypes. These results suggest that older adults with higher COMT enzymatic activity (GG), therefore lower dopamine level, have lower Neuroticism scores, and higher Agreeableness and Conscientiousness scores. This is consistent with a recent model of phasic and tonic dopamine release suggesting that even though GG genotype is associated with lower tonic dopamine release, the phasic release of dopamine might be optimal for a more adaptive personality profile.

Keywords: COMT rs4680 polymorphism; Dopamine; Genetic association; Older adults; Personality.

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References

    1. Aoki J, Iwahashi K, Ishigooka J, Ikeda K. Association study on catechol-O-methyltransferase (COMT) Val158Met gene polymorphism and NEO-FFI. Psychiatry Res. 2011;187(1-2):312–3. - PubMed
    1. Baeken C, Claes S, De Raedt R. The influence of COMT Val(1)(5)(8)Met genotype on the character dimension cooperativeness in healthy females. Brain Behav. 2014;4(4):515–20. - PMC - PubMed
    1. Barnett JH, Heron J, Ring SM, Golding J, Goldman D, Xu K, Jones PB. Gender-specific effects of the catechol-O-methyltransferase Val108/158Met polymorphism on cognitive function in children. Am J Psychiatry. 2007;164(1):142–9. - PubMed
    1. Bilder RM, Volavka J, Lachman HM, Grace AA. The catechol-O-methyltransferase polymorphism: relations to the tonic-phasic dopamine hypothesis and neuropsychiatric phenotypes. Neuropsychopharmacology. 2004;29(11):1943–61. - PubMed
    1. Briley DA, Tucker-Drob EM. Genetic and environmental continuity in personality development: a meta-analysis. Psychol Bull. 2014;140(5):1303–31. - PMC - PubMed

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