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Related Experiment Videos

[Visceral hypersensitivity].

Hiroshi Kaneko1, Hiroshi Imamura, Toshihiro Konagaya

  • 1Department of Neurology (Psychosomatic Medicine), Fujita Health University School of Medicine.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|August 11, 2006
PubMed
Summary
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Childhood stress, like maternal separation, can lead to long-term colorectal hypersensitivity, a key factor in irritable bowel syndrome (IBS). This visceral hyperalgesia is linked to specific molecular pathways, paving the way for new IBS treatments.

Area of Science:

  • Gastroenterology and Neuroscience
  • Visceral Pain Mechanisms
  • Neuroimmunology

Context:

  • Irritable bowel syndrome (IBS) is often associated with colorectal hyperalgesia.
  • Childhood adversities, including maternal deprivation and rectal distension, establish long-term pain memory in animal models.
  • These early-life stress models mimic key aspects of IBS pathophysiology.

Purpose:

  • To explore the role of early-life negative experiences in the development of visceral hyperalgesia and IBS.
  • To identify molecular mediators involved in stress-induced hypersensitivity.
  • To provide a basis for developing novel therapeutic strategies for IBS.

Summary:

  • Neonatal stress (maternal deprivation or rectal distension) induces lasting rectal hypersensitivity in animal models.

Related Experiment Videos

  • This hypersensitivity is mediated by molecules like corticotropin-releasing factor, serotonin, and substance P, released from transient receptor potential vanilloid receptor 1 (TRPV1)-positive nerves.
  • Childhood abuse or separation may significantly contribute to IBS development through these mechanisms.

    • Impact:

    • Establishes a link between early-life stress and the development of functional gastrointestinal disorders like IBS.
    • Identifies specific molecular targets for potential IBS therapies.
    • Informs the development of new drugs aimed at modulating visceral pain pathways.