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Decoding Anxiety and/or Depressive Status in Functional Constipation: Insights From Surface-Based

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Functional constipation patients with anxiety/depression show altered brain connectivity, particularly in visual and default mode networks. These gut-brain interaction changes may lead to personalized treatments.

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Area of Science:

  • Neuroscience
  • Gastroenterology
  • Psychiatry

Background:

  • Patients with functional constipation (FC) exhibit increased susceptibility to anxiety and depression.
  • The precise mechanisms of gut-brain interactions in FC remain unclear.

Purpose of the Study:

  • To investigate neurophysiological differences in functional constipation patients with and without anxiety/depressive status (FCAD and FCNAD).
  • To explore the relationship between functional-structural coupling and psychiatric comorbidities in FC.

Main Methods:

  • Included 39 FCAD patients, 32 FCNAD patients, and 42 healthy controls.
  • Utilized MRI scans to assess functional-structural coupling via regional homogeneity and cortical thickness.
  • Employed Receiver Operating Characteristic (ROC) curve analyses for predictive value assessment.

Main Results:

  • Asymmetric hemispheric decoupling observed in FCAD patients, with decreased coupling in the left hemisphere, visual cortex, left dorsolateral prefrontal cortex, and left posterior cingulate cortex.
  • ROC analysis indicated high predictive accuracy for coupling ratios in the bilateral visual cortex.
  • Specific sub-regions demonstrated significant sensitivity and specificity in differentiating patient groups.

Conclusions:

  • FCAD patients exhibit asymmetric hemispheric decoupling and impaired visual and default mode networks.
  • Findings provide novel insights into the neurophysiological underpinnings of FCAD.
  • Results may facilitate the development of personalized therapeutic strategies for FC.