Cited by 385Gastrointestinal motility and disordersMast cells and histamineInflammatory Bowel Disease

Diarrhoea-predominant IBS patients show mast cell activation and hyperplasia in the jejunum

Open access
Guilarte, M., Santos, J., de Torres, I., Alonso, C., Vicario, M., Ramos, L., Martinez, C., Casellas, F. +2 more·2007·Gut

Abstract

BACKGROUND: Increased numbers of mast cells and mast cell activation in distal gut segments are associated with symptom onset and severity in irritable bowel syndrome (IBS). Although upper gut symptoms are common, mast cells have not been thoroughly evaluated in proximal gut in IBS patients. METHODS: Jejunal biopsies obtained by Watson's capsule, aspiration of intestinal fluid and one blood sample were obtained in 20 diarrhoea-predominant patients with IBS (D-IBS) and 14 healthy volunteers (H). Psychological stress (Holmes-Rahe Scale) and depression (Beck's Depression Inventory) were evaluated at baseline and food and respiratory allergy excluded. Biopsies were processed for H&E staining and microscopic inflammation assessed by counting intraepithelial lymphocytes. Mast cells in lamina propria were counted by immunohistochemistry with CD117 (c-kit). Tryptase concentration was measured in intestinal fluid and serum. RESULTS: D-IBS patients showed higher psychological stress than healthy volunteers (D-IBS: 203 (SD 114) v H: 112 (SD 99); p = 0.019). Immunohistochemical staining of jejunal mucosa revealed mild increase in intraepithelial CD3+ cells in D-IBS patients (D-IBS: 15.3 (SD 5.5; 95% CI 12.7 to 17.9) v H: 10.3 (SD 3.9; 95% CI 8.0 to 12.5); p = 0.006). Moreover, D-IBS patients showed marked increase in mast cells numbers (D-IBS: 34 (SD 9.3); H: 15.3 (SD 4.4) mast cells/hpf; p<0.001) and higher tryptase concentration in jejunal fluid (D-IBS: 0.45 (SD 0.38); H: 0.09 (SD 0.10) microg/l; p = 0.005). Upper gut symptoms were not associated with gender, mast cell counts, jejunal tryptase or basal stress. CONCLUSION: This jejunal mucosal inflammatory profile may help identify diarrhoea-predominant IBS, a stress-related disorder.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1136/gut.2006.100594

Cites

63 of 63 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Inflammation is present in IBS, as indicated by studies on mast cells and cytokines.

    “Studies on mast cells and cytokines point out that inflammation is present in IBS. 2, 13-20”
  • Patients with IBS have increased concentrations of inflammatory/immune cells in intestinal tissue compared with controls.

    “Evidence supporting this hypothesis includes increased concentrations of inflammatory/immune cells in intestinal tissue from IBS patients, altered levels of pro- and anti-inflammatory cytokines in the GI tract and peripheral blood of patients with IBS (Table 1) (11, 13, 24, 36, 46, 50, 51, 62, 73, 75, 89, 90, 94, 98, 102, 118, 121–124, 168, 174, 185, 187), and IBS-associated polymorphisms in genes”
  • Concentrations of intestinal epithelial lymphocytes may be increased in the small intestine, colon, and rectum of patients with IBS or PI-IBS.

    “The concentrations of intestinal epithelial lymphocytes (IELs) may be increased in the small intestine (73, 174, 185), colon, and rectum (36, 89) of patients with IBS or PI-IBS.”
  • Other studies have reported elevated levels of histamine and tryptase release in patients with IBS compared with controls.

    “Other studies have reported elevated levels of histamine and tryptase release in patients with IBS compared with controls (11, 13, 35, 73).”
  • Patients with IBS have altered levels of pro- and anti-inflammatory cytokines in the GI tract and peripheral blood compared with controls.

    “Evidence supporting this hypothesis includes increased concentrations of inflammatory/immune cells in intestinal tissue from IBS patients, altered levels of pro- and anti-inflammatory cytokines in the GI tract and peripheral blood of patients with IBS (Table 1) (11, 13, 24, 36, 46, 50, 51, 62, 73, 75, 89, 90, 94, 98, 102, 118, 121–124, 168, 174, 185, 187), and IBS-associated polymorphisms in genes”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Guilarte, M., Santos, J., de Torres, I., Alonso, C., Vicario, M., Ramos, L., Martinez, C., Casellas, F., Saperas, E., & Malagelada, J. R.
Affiliations
Universitat Autònoma de Barcelona (ES)
Corresponding author
Santos, J.
Venue
Gut
Publisher
BMJ
Published
2007-02-01
Volume
56
Issue
2
Pages
203-209
ISSN
0017-5749 (ISSN-L)
OpenAlex
W2125423663
Cited by
385
References
63
Citations by year
2026: 6 · 2025: 8 · 2024: 9 · 2023: 13 · 2022: 12 · 2021: 16 · 2020: 13 · 2019: 15 · 2018: 22 · 2017: 25 · 2016: 20 · 2015: 21 · 2014: 31 · 2013: 22 · 2012: 42
FWCI
16.94
Type
journal article
Language
en
Open access
Locations
  • Gut (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
Keywords
diarrhea-predominant irritable bowel syndrome, mast cells, mast cell activation, jejunal mucosa, mast cell hyperplasia, tryptase, psychological stress, depression, intraepithelial lymphocytes, CD117, stress-related disorders
MeSH terms
Adult, Cell Count, Depression, Diarrhea, Female, Humans, Hyperplasia, Immunohistochemistry, Intestinal Mucosa, Jejunum, Male, Mast Cells, Middle Aged, Prospective Studies, Stress, Psychological, Receptors, IgE, Irritable Bowel Syndrome, Tryptases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review