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Telomere length in alcohol dependence: A role for impulsive choice and childhood maltreatment

 Jee In Kang  ;  Syung Shick Hwang  ;  Jong Rak Choi  ;  Seung-Tae Lee  ;  Jieun Kim  ;  In Sik Hwang  ;  Hae Won Kim  ;  Chan-Hyung Kim  ;  Se Joo Kim 
Journal Title
Issue Date
Adult ; Alcohol Drinking/adverse effects ; Alcohol Drinking/metabolism ; Alcoholism/genetics* ; Alcoholism/metabolism ; Cellular Senescence ; Choice Behavior/drug effects ; Delay Discounting ; Humans ; Impulsive Behavior/drug effects* ; Leukocytes ; Life Change Events ; Male ; Middle Aged ; Psychiatric Status Rating Scales ; Republic of Korea ; Stress, Psychological/genetics ; Surveys and Questionnaires ; Telomere/drug effects ; Telomere/physiology ; Telomere Shortening/drug effects* ; Telomere Shortening/physiology
Alcohol dependence ; Cellular aging ; Childhood maltreatment ; Impulsive choice ; Telomere length
Telomere shortening, a marker of cellular aging, has been considered to be linked with psychosocial stress as well as with chronic alcohol consumption, possibly mediated by oxidative stress and inflammatory response. Recent findings suggested that early life adversity on telomere dynamics may be related to impulsive choice. To further our understanding of the association of impulsive choice and childhood trauma on telomere length, we examined whether delayed discounting and childhood trauma or their interaction is related to leukocyte telomere length, while controlling for multiple potential confounding variables, in patients with alcohol dependence who are considered to have higher impulsive choice and shorter telomere length. We recruited 253 male patients with chronic alcohol dependence. All participants performed the delay discounting task, and the area under curve was used as a measure of delay discounting. Steeper delay discounting represents more impulsive choices. The modified Parent-Child Conflict Tactics Scale was used to measure childhood maltreatment. In addition, confounding factors, including socio-demographic characteristics, the Alcohol Use Disorders Identification Test, the Buss-Perry Aggression Questionnaire, the Resilience Quotient, the Beck Depression Inventory, and the Beck Anxiety Inventory, were also assessed. Hierarchical regression analyses showed a significant main effect of delay discounting (β=0.161, t=2.640, p=0.009), and an interaction effect between delay discounting and childhood maltreatment on leukocyte telomere length (β=0.173, t=2.138, p=0.034). In subsequent analyses stratified by childhood maltreatment, patients with alcohol dependence and high childhood trauma showed a significant relationship between delay discounting and leukocyte telomere length (β=0.279, t=3.183, p=0.002), while those with low trauma showed no association between them. Our findings suggest that higher impulsive choice is associated with shorter telomere length, and childhood trauma may exert a moderating effect in the relationship between impulsive choice and telomere length.
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1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
Yonsei Authors
Kang, Jee In(강지인) ORCID logo https://orcid.org/0000-0002-2818-7183
Kim, Se Joo(김세주) ORCID logo https://orcid.org/0000-0002-5438-8210
Kim, Chan Hyung(김찬형)
Kim, Hae Won(김혜원) ORCID logo https://orcid.org/0000-0002-9321-8361
Lee, Seung-Tae(이승태) ORCID logo https://orcid.org/0000-0003-1047-1415
Choi, Jong Rak(최종락) ORCID logo https://orcid.org/0000-0002-0608-2989
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