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Related Concept Videos

Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
CNS Depressants: Alcohol and Nicotine01:27

CNS Depressants: Alcohol and Nicotine

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
Pharmacogenetics and Pharmacogenomics: Overview01:29

Pharmacogenetics and Pharmacogenomics: Overview

Pharmacogenetics and pharmacogenomics examine how genetic factors influence an individual's response to drugs. While pharmacogenetics focuses on the impact of specific genetic variants on drug effects, pharmacogenomics takes a broader approach, studying how genetic variation across populations contributes to differences in drug responses. These fields aim to explain why individuals may experience varying levels of efficacy or adverse reactions to the same medication.Variability in drug...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

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Related Experiment Video

Updated: May 11, 2026

An Inexpensive, Scalable Behavioral Assay for Measuring Ethanol Sedation Sensitivity and Rapid Tolerance in Drosophila
07:28

An Inexpensive, Scalable Behavioral Assay for Measuring Ethanol Sedation Sensitivity and Rapid Tolerance in Drosophila

Published on: April 15, 2015

Genetics and alcoholism.

Howard J Edenberg1, Tatiana Foroud

  • 1Department of Biochemistry, Indiana University School of Medicine, 635 Barnhill Drive, MS4063, Indianapolis, IN 46202-5122, USA. edenberg@iu.edu

Nature Reviews. Gastroenterology & Hepatology
|May 29, 2013
PubMed
Summary
This summary is machine-generated.

Alcohol dependence is a complex genetic disease influenced by numerous genes. Identifying these genetic variations, like ADH1B and ALDH2, is crucial for understanding alcoholism risk.

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High-Throughput Method for Measuring Alcohol Sedation Time of Individual Drosophila melanogaster
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Last Updated: May 11, 2026

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Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice
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Area of Science:

  • Genetics
  • Neuroscience
  • Public Health

Background:

  • Excessive alcohol consumption leads to significant physical, psychological, and social issues.
  • Alcohol use disorders, including alcohol dependence (alcoholism) and alcohol abuse, are recognized as serious health problems.
  • Alcoholism is understood as a complex genetic disorder with multifactorial inheritance.

Purpose of the Study:

  • To review the genetic underpinnings of alcohol dependence.
  • To highlight key genes and genetic variations associated with alcoholism risk.
  • To emphasize the ongoing research into the genetic architecture of alcohol use disorders.

Main Methods:

  • Review of existing scientific literature and genetic studies.
  • Identification of specific genes and their variants implicated in alcohol metabolism and risk.
  • Analysis of gene variants such as ADH1B, ALDH2, GABRA2, CHRM2, KCNJ6, and AUTS2.

Main Results:

  • Variations in multiple genes contribute to an individual's susceptibility to alcoholism.
  • Genes involved in alcohol metabolism, notably ADH1B and ALDH2, show the most significant impact on alcoholism risk.
  • Other identified genes (GABRA2, CHRM2, KCNJ6, AUTS2) also play a role in alcoholism and related traits.

Conclusions:

  • Alcohol dependence is a genetically complex condition.
  • Continued genetic analysis and meta-analyses will refine our understanding of the genes and pathways influencing alcoholism.
  • Further research is essential for developing targeted prevention and treatment strategies for alcohol use disorders.