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Related Experiment Videos

Alcoholism: genes and mechanisms.

Gabor Oroszi1, David Goldman

  • 1Laboratory of Neurogenetics, NIAAA, NIH, 5625 Fishers Lane, Room 3S32, MSC9412, Rockville, MD 20852, USA.

Pharmacogenomics
|December 9, 2004
PubMed
Summary

Genetic factors significantly influence alcoholism, impacting alcohol metabolism and brain functions like reward and cognition. Understanding these genetic links offers opportunities for better addiction treatment and prevention strategies.

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Recurrent & non-recurrent copy number variants in Native Americans and a cosmopolitan sample in relation to Alcohol Use Disorder and other psychiatric diseases.

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Area of Science:

  • Neurobiology
  • Genetics
  • Addiction Science

Background:

  • Alcoholism is a chronic, relapsing disease with limited treatment efficacy, affecting about one-third of patients with sustained abstinence.
  • Genetic heritability of alcoholism suggests inherited gene variants influence alcohol metabolism and neurobiological pathways.

Purpose of the Study:

  • To explore the neurobiological underpinnings of addiction by examining genetic variations.
  • To identify specific gene variants associated with intermediate phenotypes in alcoholism.

Main Methods:

  • Review of genetic studies on alcoholism.
  • Analysis of functional gene variants impacting alcohol metabolism and neurobiology.

Main Results:

  • Common variants in alcohol dehydrogenase 1B and aldehyde dehydrogenase 2 influence alcohol metabolism and cause flushing.
  • Catechol-O-methyltransferase (COMT) Val158Met affects executive function, stress response, and opioid function.
  • Opioid receptor micro1 (OPRM1) Asn40Asp may modulate naltrexone efficacy.
  • HTTLPR variants impact serotonin transporter function, influencing stress response and anxiety relevant to addiction.

Conclusions:

  • Genetic variations play a crucial role in alcoholism vulnerability, progression, and treatment response.
  • Targeting specific neurobiological pathways influenced by these genes offers potential for improved therapeutic interventions.

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