The Role of Job Stress and Brain-Derived Neurotrophic Factor Gene Polymorphism on the Severity of Alcohol Drinking in Korean Office Workers in Their Twenties

20대 한국 직장인의 음주 심각도에 대한 직무 스트레스와 BDNF 유전자 다형성의 역할

  • Kim, Bo-Ah (Department of Neuropsychiatry, Chungbuk National University College of Medicine) ;
  • Lee, Sang-Ick (Department of Neuropsychiatry, Chungbuk National University College of Medicine) ;
  • Kim, Sie-Kyeong (Department of Neuropsychiatry, Chungbuk National University College of Medicine) ;
  • Shin, Chul-Jin (Department of Neuropsychiatry, Chungbuk National University College of Medicine) ;
  • Son, Jung-Woo (Department of Neuropsychiatry, Chungbuk National University College of Medicine) ;
  • Hong, Joo-Bong (St. Mary's Psychiatric Clinic) ;
  • Nam, Yeong-Woo (Comfort-mind Psychiatric Clinic) ;
  • Ju, Ga-Won (Department of Neuropsychiatry, Chungbuk National University College of Medicine)
  • 김보아 (충북대학교 의과대학 정신건강의학교실) ;
  • 이상익 (충북대학교 의과대학 정신건강의학교실) ;
  • 김시경 (충북대학교 의과대학 정신건강의학교실) ;
  • 신철진 (충북대학교 의과대학 정신건강의학교실) ;
  • 손정우 (충북대학교 의과대학 정신건강의학교실) ;
  • 홍주봉 (성모 정신과의원) ;
  • 남영우 (마음편한정신과의원) ;
  • 주가원 (충북대학교 의과대학 정신건강의학교실)
  • Received : 2012.01.25
  • Accepted : 2012.04.18
  • Published : 2012.05.31

Abstract

Objectives : The aim of this study was to examine the effects of brain-derived neurotrophic factor (BDNF) genetic polymorphism and job stress on the severity of alcohol drinking. It was hypothesized that individuals with the Met/Met BDNF genotype would be more vulnerable than those carrying the Val allele. Methods : Participants were 133 healthy Korean adults (mean age $28.2{\pm}1.1$). Job stress and the severity index of drinking were investigated through self-reported questionnaires. BDNF (rs6265) gene was genotyped. Results : There was no significant association between job stress and the severity of alcohol drinking. Although the severity of alcohol drinking was not associated with BDNF genetic polymorphism, there was a significant difference in men according to genotype and job stress. Men with homozygous BDNF Met allele were more severe in alcohol drinking when job stress was high, less severe in alcohol drinking when job stress was low than those carrying the Val allele (F = 4.47, p = 0.038). Also higher level of job stress was correlated with higher severity of alcohol drinking in men homozygous for BDNF Met allele (rs = 0.620, p = 0.005). Conclusions : These findings suggest the possibility that Met allele could have differential susceptibility, with men homozygous for BDNF Met allele being more susceptible to both more adverse and less adverse environmental influences.

Keywords

References

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