Biological research for nursing · 2011
Tridimensional personalities and polymorphism of dopamine D2 receptor among heroin addicts.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Teh Lay K, Izuddin Abu F, M H Fazleen H, Zakaria Zainul A, Salleh Mohd Zaki
Аннотация
BACKGROUND: Drug addiction is a multifactorial disorder. Researchers have posited that an individual's inherited behavioral propensity or temperament contributes to the disorder by shaping a personality strongly linked with the risk of drug abuse. Further, they hypothesize that the polymorphism of dopamine D2 receptor increases the susceptibility to and severity of addiction. We, therefore, investigated possible associations between dopamine D2 receptor (DRD2) and personality traits among intravenous heroin addicts.
METHODS: We assessed 93 intravenous heroin addicts and controls using Diagnostic and Statistical Manual, Fourth Edition (DSM-IV) and the Tridimensional Personality Questionnaire (TPQ). We confirmed drug-dependence status using a questionnaire based on DSM-IV criteria. We extracted DNA from the subjects' whole blood and genotyped it for DRD2 allelic variants.
RESULTS: Genotype analysis showed a significantly higher frequency for the TaqIA polymorphism among the addicts (69.9%) compared to control subjects (42.6%; Fisher's exact χ(2), p < .05). We observed no significant differences for other variants between the addicts and controls. The addicts had higher scores for novelty seeking (NS) and harm avoidance (HA) personality traits but lower scores for reward dependence (RD) when compared to control subjects.
LIMITATION: The environmental cues are different for the addicts, and the healthy university students we used as controls. We recommend that researchers employ a gene-environment interaction approach to study factors associated with addictive behaviors in future studies.
CONCLUSION: Taq1A may be implicated for an increased vulnerability to addiction. Screening of this marker might be useful for identifying individuals at risk of addiction.
METHODS: We assessed 93 intravenous heroin addicts and controls using Diagnostic and Statistical Manual, Fourth Edition (DSM-IV) and the Tridimensional Personality Questionnaire (TPQ). We confirmed drug-dependence status using a questionnaire based on DSM-IV criteria. We extracted DNA from the subjects' whole blood and genotyped it for DRD2 allelic variants.
RESULTS: Genotype analysis showed a significantly higher frequency for the TaqIA polymorphism among the addicts (69.9%) compared to control subjects (42.6%; Fisher's exact χ(2), p < .05). We observed no significant differences for other variants between the addicts and controls. The addicts had higher scores for novelty seeking (NS) and harm avoidance (HA) personality traits but lower scores for reward dependence (RD) when compared to control subjects.
LIMITATION: The environmental cues are different for the addicts, and the healthy university students we used as controls. We recommend that researchers employ a gene-environment interaction approach to study factors associated with addictive behaviors in future studies.
CONCLUSION: Taq1A may be implicated for an increased vulnerability to addiction. Screening of this marker might be useful for identifying individuals at risk of addiction.