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Related Concept Videos

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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Human Genetics01:28

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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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Related Experiment Video

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Mapping the cortico-striatal transcriptome in attention deficit hyperactivity disorder.

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This study reveals altered gene expression in brain regions critical for attention-deficit/hyperactivity disorder (ADHD). Key neurotransmitter pathways, especially glutamatergic ones, are downregulated, offering molecular insights into ADHD pathogenesis.

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Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Attention-deficit/hyperactivity disorder (ADHD) lacks a clear transcriptomic understanding of affected brain circuitry.
  • Genetic variants associated with ADHD risk have been identified, but molecular mechanisms remain unclear.

Purpose of the Study:

  • To investigate the transcriptomic landscape of the caudate nucleus and anterior cingulate cortex in individuals with and without ADHD.
  • To identify molecular mechanisms underlying ADHD pathogenesis through gene expression analysis.

Main Methods:

  • Transcriptome analysis of post-mortem brain tissue (caudate nucleus and anterior cingulate cortex) from 60 individuals.
  • Differential gene expression analysis between ADHD and control groups.

Main Results:

  • Significant differential gene expression observed in the anterior cingulate cortex and caudate nucleus.
  • Downregulation of neurotransmitter gene pathways, particularly glutamatergic pathways, in ADHD.
  • Transcriptomic changes in ADHD correlate with those found in other neurodevelopmental and mood disorders.

Conclusions:

  • Transcriptomic anomalies in cortico-striatal neurotransmitter systems are implicated in ADHD pathogenesis.
  • Findings support existing models of ADHD involving neurotransmitter dysregulation.
  • The study provides molecular insights into the shared biological underpinnings between ADHD and other psychiatric disorders.