Striatal dopamine release and family history of alcoholism

Research output: Contribution to journalArticle

Abstract

Background: The offspring of alcohol-dependent individuals are at increased risk for alcoholism. The present study was designed to determine whether mesolimbic dopamine binding potential (BP), dopamine release, stress hormones, and subjective responses to intravenous amphetamine are different in nonalcoholic offspring from families with a history of alcohol dependence [family history positive (FHP)] than in nonalcoholic offspring without a family history of alcohol dependence [family history negative (FHN)]. Methods: Participants were 41 healthy men and women (11 FHP, 30 FHN; age range 18-29). After completing baseline psychiatric symptom and personality measures, striatal D2/D3 dopamine BP and dopamine release in response to an amphetamine challenge were measured with positron emission tomography (PET) using the D2/D3 dopamine (DA) receptor radioligand [11C]raclopride. Binding potential was defined as Bmax/KD, percent change in BP from baseline defined dopamine release. During the scans, subjects rated the degree to which they were experiencing each of 10 possible drug effects. Plasma cortisol and growth hormone (GH) were also measured at scheduled intervals during the scans. Results: Neither baseline BP nor dopamine release differed by family history. Similarly, subjective responses to amphetamine did not differ by a family history of alcoholism. Although both cortisol and GH increased following administration of amphetamine, these increases did not differ between family history groups. Conclusions: Using amphetamine to provoke mesolimbic dopamine, we did not show significant differences in dopamine release, subjective responses, or stress hormone measures as a function of family history of alcoholism.

Original languageEnglish (US)
Pages (from-to)1143-1151
Number of pages9
JournalAlcoholism: Clinical and Experimental Research
Volume30
Issue number7
DOIs
StatePublished - Jul 2006

Fingerprint

Corpus Striatum
Alcoholism
Dopamine
Amphetamine
Alcohols
Growth Hormone
Hydrocortisone
Hormones
Dopamine D3 Receptors
Raclopride
Positron emission tomography
Dopamine D2 Receptors
Positron-Emission Tomography
Psychiatry
Personality
Plasmas

Keywords

  • Alcoholism
  • Amphetamine
  • Dopamine
  • Family History
  • PET

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Toxicology

Cite this

Striatal dopamine release and family history of alcoholism. / Munro, Cynthia; McCaul, Mary Elizabeth; Oswald, Lynn Marie; Wong, Dean Foster; Zhou, Yun; Brasic, James R; Kuwabara, Hiroto; Kumar, Anil; Alexander, Mohab; Ye, Weiguo; Wand, Gary S.

In: Alcoholism: Clinical and Experimental Research, Vol. 30, No. 7, 07.2006, p. 1143-1151.

Research output: Contribution to journalArticle

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N2 - Background: The offspring of alcohol-dependent individuals are at increased risk for alcoholism. The present study was designed to determine whether mesolimbic dopamine binding potential (BP), dopamine release, stress hormones, and subjective responses to intravenous amphetamine are different in nonalcoholic offspring from families with a history of alcohol dependence [family history positive (FHP)] than in nonalcoholic offspring without a family history of alcohol dependence [family history negative (FHN)]. Methods: Participants were 41 healthy men and women (11 FHP, 30 FHN; age range 18-29). After completing baseline psychiatric symptom and personality measures, striatal D2/D3 dopamine BP and dopamine release in response to an amphetamine challenge were measured with positron emission tomography (PET) using the D2/D3 dopamine (DA) receptor radioligand [11C]raclopride. Binding potential was defined as Bmax/KD, percent change in BP from baseline defined dopamine release. During the scans, subjects rated the degree to which they were experiencing each of 10 possible drug effects. Plasma cortisol and growth hormone (GH) were also measured at scheduled intervals during the scans. Results: Neither baseline BP nor dopamine release differed by family history. Similarly, subjective responses to amphetamine did not differ by a family history of alcoholism. Although both cortisol and GH increased following administration of amphetamine, these increases did not differ between family history groups. Conclusions: Using amphetamine to provoke mesolimbic dopamine, we did not show significant differences in dopamine release, subjective responses, or stress hormone measures as a function of family history of alcoholism.

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