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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...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:37

Epigenetic Regulation

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...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Gene-Environment Interactions01:20

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...

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Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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Sensitive periods in epigenetics: bringing us closer to complex behavioral phenotypes.

Corina Nagy1, Gustavo Turecki

  • 1McGill Group for Suicide Studies, Douglas Hospital University Institute, 6875 Lasalle boul, Montreal, QC, Canada.

Epigenomics
|August 28, 2012
PubMed
Summary

Epigenetic mechanisms, like DNA methylation, influence gene function without changing DNA. Early life exposure to these factors can impact complex behavioral phenotypes and disease development.

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Area of Science:

  • Genetics
  • Epigenetics
  • Developmental Biology

Background:

  • Genome-wide association studies have limited success in linking genes to complex diseases.
  • Epigenetic mechanisms, which alter gene function without changing DNA sequence, offer an alternative link.
  • These mechanisms include DNA methylation, histone modifications, ncRNAs, and 5-hydroxymethylcytosine.

Purpose of the Study:

  • To review the role of epigenetic mechanisms in genomic function.
  • To focus on the development of complex behavioral phenotypes.
  • To highlight sensitive developmental periods for epigenetic influence.

Main Methods:

  • This is a review article, synthesizing existing research on epigenetics and disease.
  • Focuses on literature concerning DNA methylation, histone modifications, and ncRNAs.
  • Examines studies linking epigenetic changes to behavioral outcomes.

Main Results:

  • Altered DNA methylation patterns are associated with various diseases.
  • Early life is a sensitive period for epigenetic regulation.
  • Epigenetic mechanisms contribute to complex behavioral phenotypes.

Conclusions:

  • Epigenetic mechanisms are crucial for understanding gene function and disease.
  • Early life interventions targeting epigenetic processes may prevent disease.
  • Further research is needed to fully elucidate the impact of epigenetics on complex traits.