Family history of alcoholism is related to increased D2/D3 receptor binding potential: a marker of resilience or risk?

Research output: Contribution to journalArticle

Abstract

The aim of this study was to examine the relationship between family history of alcohol use disorder and striatal dopamine using positron emission tomography imaging. Participants were 84 healthy, 18- to 30-year-old, social drinkers recruited via fliers and newspaper advertisements. At assessment, participants completed measures of lifetime personal and family substance use and psychiatric symptoms. Participants underwent two consecutive positron emission tomography scans using the D2/D3 dopamine receptor radioligand [11C]raclopride. Scans were preceded by intravenous saline and amphetamine 0.3 mg/kg, providing measures of baseline [11C]raclopride binding potential (BPND) and change in [11C]raclopride (ΔBPND). Subjective ratings of stimulant drug effects were collected during scans. Subjects were classified as family history positive (FHP) if they reported any first-degree relative with alcohol use disorder (AUD) and family history negative (FHN) if no first-degree relatives had history of AUD. Participants were predominantly White (69.0 percent) and male (62.1 percent). Baseline [11C]raclopride BPND was generally higher in FHP compared with FHN subjects across striatal subdivisions. There were no differences in ΔBPND across regions. Negative subjective drug effects were more pronounced in FHP than in FHN subjects. While FHN subjects evidenced the expected positive relationship between ΔBPND and positive subjective drug effects, this relationship was disrupted in FHP subjects. There are key differences in dopamine status and subjective stimulant drug experiences as a function of family AUD history. These findings have important implications for understanding risk for AUD development in FHP offspring.

Original languageEnglish (US)
Pages (from-to)218-228
Number of pages11
JournalAddiction Biology
Volume22
Issue number1
DOIs
StatePublished - Jan 1 2017

Keywords

  • Alcohol use disorder
  • amphetamine
  • dopamine release
  • family history
  • mesolimbic dopamine
  • positron emission tomography (PET)

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Pharmacology
  • Psychiatry and Mental health

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