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Related Concept Videos

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Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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Biological Causes of Schizophrenia01:29

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Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
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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.
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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.
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Postsynaptic Potential (PSP)01:32

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Postsynaptic potential (PSP) refers to a change in the electrical potential of a neuron when neurotransmitters released by presynaptic neurons bind to postsynaptic receptors. This potential can either be excitatory, leading to depolarization and ultimately action potential generation, or inhibitory, leading to hyperpolarization and suppression of the postsynaptic neuron.
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Author Spotlight: Exploring Autism Spectrum Disorder Symptoms in Fruit Flies — Genetic Models and Behavioral Tests
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Postsynaptic autism spectrum disorder genes and synaptic dysfunction.

Paola Bonsi1, Antonella De Jaco2, Laurent Fasano3

  • 1Laboratory of Neurophysiology and Plasticity, IRCCS Fondazione Santa Lucia, Via del Fosso di Fiorano 64, 00143 Rome, Italy.

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Mutations in autism spectrum disorder (ASD) genes disrupt synaptic function and behavior by affecting the postsynaptic compartment. Better animal models are needed to understand ASD mechanisms and improve treatments.

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ASD gene expression regulationAnimal models of ASDMitochondrial dysfunction

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Area of Science:

  • Neuroscience
  • Genetics
  • Developmental Biology

Background:

  • Autism spectrum disorder (ASD) is a complex neurodevelopmental condition characterized by social-communication deficits and repetitive behaviors.
  • Genetic factors play a significant role in ASD etiology, with numerous risk genes identified.
  • Many ASD-associated genes impact synaptic function, particularly within the postsynaptic neuronal compartment.

Purpose of the Study:

  • To review the role of postsynaptic synaptic dysfunction in autism spectrum disorder (ASD).
  • To explore how mutations in ASD-linked genes contribute to neuronal circuit and behavioral alterations.
  • To highlight the need for improved animal models in ASD research.

Main Methods:

  • Literature review of studies on ASD-linked genes and synaptic function.
  • Categorization of ASD risk genes based on their roles in gene expression and synaptic activity.
  • Analysis of the impact of gene expression timing and location on ASD phenotypes.

Main Results:

  • Mutations in ASD-linked genes can lead to synaptic dysfunction and behavioral changes.
  • ASD genes broadly fall into categories regulating gene expression and synaptic activity.
  • The effects of ASD genes are context-dependent, varying with developmental time and subcellular localization.

Conclusions:

  • Postsynaptic dysfunction is a key mechanism underlying ASD.
  • Standardized and reproducible animal models are crucial for advancing ASD research.
  • Improved preclinical models will enhance understanding of ASD development and therapeutic strategies.