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Related Concept Videos

Human Genetics01:28

Human Genetics

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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...
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Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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Genomic Imprinting and Inheritance02:30

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

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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.
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Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
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Histone Modification02:32

Histone Modification

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
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Related Experiment Video

Updated: Jun 28, 2025

Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain

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DNA methylation differences in genes associated with human personal disorders and deviant behavior.

I B Mosse1, N G Sedlyar1, K A Mosse1

  • 1Laboratory of Human Genetics, the Institute of Genetics and Cytology, National Academy of Sciences of Belarus, Minsk, Republic of Belarus.

AIMS Neuroscience
|April 15, 2024
PubMed
Summary

Epigenetic changes, specifically DNA methylation, are linked to personality disorders and deviant behavior. This study found significant methylation differences in key genes, suggesting their potential as diagnostic biomarkers.

Keywords:
deviant behaviorepigenetic regulationhigh-throughput sequencingmethylation of CpG sitespersonal disorders

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Area of Science:

  • Neuroscience
  • Genetics
  • Psychiatry

Background:

  • Epigenetic gene regulation influences mental health conditions like personality disorders.
  • Previous studies on gene activity in stress and depression yielded contradictory results.
  • Investigating DNA methylation's role in personality disorders and deviant behavior is crucial.

Purpose of the Study:

  • To examine the contribution of DNA methylation changes to personality disorders and deviant behavior.
  • To analyze CpG island methylation status in specific gene regions.
  • To identify potential epigenetic biomarkers for these conditions.

Main Methods:

  • Systematic study of CpG Islands in promoter and intron regions of 12 genes.
  • DNA methylation analysis using high-throughput sequencing of converted samples.
  • Bismark pipeline used for methylation site calling in CpG islands.

Main Results:

  • Significant differences in methylation were observed at 7 CpG sites across 6 genes between patients and controls.
  • The most significant hypermethylation was detected in the HTR2A and OXTR genes.
  • p-values for HTR2A and OXTR were 1.2 × 10-13 and 2.3 × 10-7, respectively.

Conclusions:

  • Alterations in DNA methylation are implicated in the gene expression dysregulation associated with personality disorders and deviant behavior.
  • These findings support the role of epigenetic modifications in mental health.
  • Identified methylation changes in HTR2A and OXTR may serve as valuable biomarkers for diagnosis and treatment assessment.