Advances in Brain Circuits and Sensory Information: Chronic Visceral Pain

A special issue of Brain Sciences (ISSN 2076-3425). This special issue belongs to the section "Systems Neuroscience".

Deadline for manuscript submissions: closed (16 June 2022) | Viewed by 3669

Special Issue Editor


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Guest Editor
College of Medicine and Public Health, Flinders University, Adelaide, SA 5001, Australia
Interests: chronic visceral pain; spinal cord; neuropharmacology; cross-organ sensitization; brain–gut axis; central sensitization

Special Issue Information

Dear Colleagues,

Chronic pain involving internal viscera is a significant and complex problem worldwide. Chronic visceral pain is mediated by hypersensitivity occurring within sensory pathways as a consequence of pathologies occurring in the brain–gut axis, such as those related to stress and those related to peripheral sensitisation related to dietary or bacterial inflammation. Regardless of the origin, altered signalling within the spinal cord and brain is a key factor in facilitating the chronicity of visceral pain. Central changes also facilitate cross-organ sensitization that underlies debilitating pain and autonomic co-morbidities that are often associated with chronic visceral pain syndromes that are difficult to manage clinically.

The Special Issue aims to gather contemporary findings on molecular mechanisms and circuit disruptions occurring within the spinal cord and brain, at a cellular and systems level, involved in chronic visceral pain. The issue will bring together reviews and original research articles on peripheral and central pathology affecting visceral pain signalling within brain circuits in humans and in models of chronic visceral pain, their role in facilitating visceral cross-sensitisation and autonomic dysfunction, and mechanisms that pose as potential therapeutic strategies.

Dr. Andrea Harrington
Guest Editor

Manuscript Submission Information

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Keywords

  • chronic visceral pain
  • spinal cord
  • neuropharmacology
  • cross-organ sensitization
  • brain–gut axis
  • central sensitization

Published Papers (1 paper)

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Research

20 pages, 1857 KiB  
Article
Altered Structural Covariance of Insula, Cerebellum and Prefrontal Cortex Is Associated with Somatic Symptom Levels in Irritable Bowel Syndrome (IBS)
by Cecilia Grinsvall, Lukas Van Oudenhove, Patrick Dupont, Hyo Jin Ryu, Maria Ljungberg, Jennifer S. Labus, Hans Törnblom, Emeran A. Mayer and Magnus Simrén
Brain Sci. 2021, 11(12), 1580; https://doi.org/10.3390/brainsci11121580 - 29 Nov 2021
Cited by 4 | Viewed by 2961
Abstract
Somatization, defined as the presence of multiple somatic symptoms, frequently occurs in irritable bowel syndrome (IBS) and may constitute the clinical manifestation of a neurobiological sensitization process. Brain imaging data was acquired with T1 weighted 3 tesla MRI, and gray matter morphometry were [...] Read more.
Somatization, defined as the presence of multiple somatic symptoms, frequently occurs in irritable bowel syndrome (IBS) and may constitute the clinical manifestation of a neurobiological sensitization process. Brain imaging data was acquired with T1 weighted 3 tesla MRI, and gray matter morphometry were analyzed using FreeSurfer. We investigated differences in networks of structural covariance, based on graph analysis, between regional gray matter volumes in IBS-related brain regions between IBS patients with high and low somatization levels, and compared them to healthy controls (HCs). When comparing IBS low somatization (N = 31), IBS high somatization (N = 35), and HCs (N = 31), we found: (1) higher centrality and neighbourhood connectivity of prefrontal cortex subregions in IBS high somatization compared to healthy controls; (2) higher centrality of left cerebellum in IBS low somatization compared to both IBS high somatization and healthy controls; (3) higher centrality of the anterior insula in healthy controls compared to both IBS groups, and in IBS low compared to IBS high somatization. The altered structural covariance of prefrontal cortex and anterior insula in IBS high somatization implicates that prefrontal processes may be more important than insular in the neurobiological sensitization process associated with IBS high somatization. Full article
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