Digestive Diseases and Sciences

, Volume 55, Issue 12, pp 3508–3513 | Cite as

Abnormal Small-Intestinal Endocrine Cells in Patients with Irritable Bowel Syndrome

Original Article

Abstract

Background

General disturbances in gastrointestinal motility have been reported in patients with irritable bowel syndrome (IBS). The gastrointestinal tract hormones play an important role in regulating gastrointestinal motility.

Aims

To investigate a possible abnormality in the small intestinal endocrine cells of IBS patients.

Methods

Included in the study were 41 patients with irritable bowel syndrome according to Rome Criteria III and 42 healthy controls. Duodenal biopsies were obtained from both patients and controls during gastroscopy. The biopsies were immunostained by avidin–biotin-complex method for secretin, CCK, GIP, somatostatin, and serotonin cells. The cell densities were quantified by computerized image analysis.

Results

The density of secretin- and CCK-immunoreactive cells in patients with IBS was significantly reduced. The reduction in secretin and CCK cells occurred only in IBS-diarrhea patients, but not in IBS-constipation subtype. Both GIP and somatostatin cell densities were reduced in the duodenum of IBS patients. There was no statistical difference between the subtypes of IBS patients, regarding secretin, CCK, GIP, or somatostatin cell densities. Serotonin cell density was not affected in patients with IBS.

Conclusions

The low densities of secretin and CCK cells in IBS-diarrhea patients may cause a functional pancreatic insufficiency as well as inadequate gall emptying, as these hormones stimulate pancreatic bicarbonate and enzyme secretion and CCK stimulates as well gall bladder contraction. Low densities of secretin, GIP, and somatostatin cells in IBS patients might result in a high secretion of gastric acid, as secretin, GIP, and somatostatin inhibit gastric acid secretion.

Keywords

Computer image analysis Endocrine cells IBS Small intestine Immunohistochemistry 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Magdy El-Salhy
    • 1
    • 2
  • K. Vaali
    • 2
  • V. Dizdar
    • 2
  • T. Hausken
    • 2
  1. 1.Section for Gastroenterology, Department of MedicineStord Helse-Fonna HospitalStordNorway
  2. 2.Section for Gastroenterology, Institute of MedicineUniversity of BergenBergenNorway

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