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Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis
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Microscopic colitis: pathophysiology and clinical management.

Stephan Miehlke1, Bas Verhaegh2, Gian Eugenio Tontini3

  • 1Centre for Digestive Diseases, Internal Medicine Centre Eppendorf, Hamburg, Germany; Centre for Oesophageal Disorders, University Hospital Eppendorf, Hamburg, Germany.

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Summary

Microscopic colitis, a chronic condition causing watery diarrhea, impacts quality of life. This review covers its epidemiology, pathogenesis, risk factors, and treatments, proposing an updated management algorithm.

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Area of Science:

  • Gastroenterology
  • Colorectal diseases
  • Inflammatory bowel disease

Background:

  • Microscopic colitis is a chronic inflammatory colon condition characterized by chronic watery diarrhea.
  • Symptoms include abdominal pain, urgency, and incontinence, significantly reducing quality of life and increasing healthcare costs.
  • Diagnosis requires histological examination of colon biopsies, as endoscopic findings are often minimal.

Purpose of the Study:

  • To summarize current evidence on the epidemiology, pathogenesis, and risk factors of microscopic colitis.
  • To discuss established and emerging therapeutic options for achieving clinical remission.
  • To propose an updated treatment algorithm for managing microscopic colitis.

Main Methods:

  • Systematic review of recent literature on microscopic colitis.
  • Analysis of epidemiological data, pathogenic mechanisms, and identified risk factors.
  • Evaluation of current and novel treatment strategies, including therapeutic options for remission.

Main Results:

  • Two main histological subtypes exist: collagenous colitis and lymphocytic colitis, with variant forms also reported.
  • The review synthesizes evidence on disease triggers, progression, and factors influencing patient outcomes.
  • Established treatments and promising novel therapies for managing symptoms and achieving remission are discussed.

Conclusions:

  • Further prospective studies are essential to elucidate the natural history of microscopic colitis.
  • Validated criteria for assessing disease activity are needed to standardize patient management.
  • An updated treatment algorithm is proposed to guide clinical practice in managing this condition.