Related Experiment Video
Updated: Jul 1, 2025
08:27
Large-Scale Multi-Omics Genome-Wide Association Studies Mo-GWAS: Guidelines for Sample Preparation and Normalization
Published on: July 27, 2021
3.7K
SNP-based and haplotype-based genome-wide association on drug dependence in Han Chinese
Hanli Xu1, Yulin Kang2, Tingming Liang3
1College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing, 100028, China.
BMC Genomics
|March 6, 2024
Summary
Genetic factors influence drug addiction. This study found associations between immune-related genes in the MHC region and drug addiction risk in Han Chinese individuals, suggesting novel therapeutic targets.
Area of Science:
- Genetics
- Neuroscience
- Pharmacology
Background:
- Drug addiction is a global health issue with significant genetic underpinnings.
- Understanding genetic predispositions is crucial for developing effective prevention and treatment strategies.
Purpose of the Study:
- To investigate the association between genetic variations and drug addiction in the Han Chinese population.
- To identify specific genes and genetic regions contributing to the risk of illicit drug use.
Main Methods:
- Whole-genome genotyping was performed on 1000 illicit drug users and 9693 healthy controls.
- Single nucleotide polymorphism (SNP)-based and haplotype-based association analyses were conducted.
Main Results:
- Significant associations were found between drug addiction and immune-related genes in the major histocompatibility complex (MHC) region.
- Specific SNPs in BRAP (rs3782886) and ALDH2 (rs671) showed genome-wide significance.
- A novel association was identified on chromosome 22, potentially linking vitamin B12 metabolism to methamphetamine addiction.
Conclusions:
- The study highlights the role of the neuroimmune system and vitamin B12 metabolism in drug addiction.
- Findings offer insights for improved risk assessment, prevention, and treatment of substance use disorders.
- Potential novel therapeutic avenues targeting these genetic and metabolic pathways are suggested.
Related Concept Videos
01:11Genome-wide Association Studies-GWAS
13.4K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
13.4K
01:15Drug Abuse and Addiction: Pharmacological Phenomena
472
Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
472
01:28Human Genetics
566
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...
The complex relationship between genetics and psychology is observable through common biological components such...
566
01:17Drug Dependence
1.0K
Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
1.0K
01:24Substance Use Disorders Affecting Sleep
167
Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
Understanding the concepts of physical dependence,...
167