The DOI matches its Crossref record; 66 of the 66 references it cites were found in a registry or an index.
Role for protease activity in visceral pain in irritable bowel syndrome
Open accessAbstract
Mediators involved in the generation of symptoms in patients with irritable bowel syndrome (IBS) are poorly understood. Here we show that colonic biopsy samples from IBS patients release increased levels of proteolytic activity (arginine cleavage) compared to asymptomatic controls. This was dependent on the activation of NF-kappaB. In addition, increased proteolytic activity was measured in vivo, in colonic washes from IBS compared with control patients. Trypsin and tryptase expression and release were increased in colonic biopsies from IBS patients compared with control subjects. Biopsies from IBS patients (but not controls) released mediators that sensitized murine sensory neurons in culture. Sensitization was prevented by a serine protease inhibitor and was absent in neurons lacking functional protease-activated receptor-2 (PAR2). Supernatants from colonic biopsies of IBS patients, but not controls, also caused somatic and visceral hyperalgesia and allodynia in mice, when administered into the colon. These pronociceptive effects were inhibited by serine protease inhibitors and a PAR2 antagonist and were absent in PAR2-deficient mice. Our study establishes that proteases are released in IBS and that they can directly stimulate sensory neurons and generate hypersensitivity symptoms through the activation of PAR2.
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“However, some studies failed to demonstrate increased activated mast cells in IBS patients (35, 36, 57, 58, 168) and there are no consistent differences in the tissue concentrations of activated mast cells in patients with different IBS subtypes (36, 189).”
From Intestinal microbiota and immune function in the pathogenesis of irritable bowel syndrome (2013) · cites this paper as [35]
In the citing paper
“Other studies have reported elevated levels of histamine and tryptase release in patients with IBS compared with controls (11, 13, 35, 73).”
From Intestinal microbiota and immune function in the pathogenesis of irritable bowel syndrome (2013) · cites this paper as [35]
In the citing paper
“For example, Trypsin-like activity and tryptase release are increased in colonic biopsies from IBS patients.7,58”
From The emerging roles of bacterial proteases in intestinal diseases (2023) · cites this paper as [58]
In the citing paper
“Similar to IBD, studies in mice and humans have provided evidence that host- and bacterial-derived proteases may contribute to pathogenesis and symptom generation.7,13,57,58”
From The emerging roles of bacterial proteases in intestinal diseases (2023) · cites this paper as [58]
In the citing paper
“Biopsy supernatants from IBS patients have also been shown to excite spinal afferent neurons via PAR-2 activation.7,58,155”
From The emerging roles of bacterial proteases in intestinal diseases (2023) · cites this paper as [58]
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“그 리고, 과민성 장증후군 환자의 분변이나 대장 조직에서 유래 한 상층액에서 protease나 protease-like activity를 관찰하 거나 PAR2의 역할에 대한 선행 연구들이 있었다.(4-9) 이 연구”
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Metadata
- Authors
- Cenac, N., Andrews, C. N., Holzhausen, M., Chapman, K., Cottrell, G., Andrade-Gordon, P., Steinhoff, M., Barbara, G., Beck, P., Bunnett, N. W., Sharkey, K. A., Ferraz, J. G. P., Shaffer, E., & Vergnolle, N.
- Affiliations
- University of Calgary (CA)
- University of California, San Francisco (US)
- University of Münster (DE)
- University of Bologna (IT)
- Corresponding author
- Vergnolle, Nathalie
- ORCID
- Venue
- Journal of Clinical Investigation
- Published
- 2007-03-01
- Volume
- 117
- Issue
- 3
- Pages
- 636-647
- ISSN
- 0021-9738 (ISSN-L)
- PMC
- PMC1794118
- OpenAlex
- W2140528350
- Cited by
- 591
- References
- 66
- Citations by year
- 2026: 12 · 2025: 19 · 2024: 22 · 2023: 19 · 2022: 21 · 2021: 24 · 2020: 26 · 2019: 27 · 2018: 25 · 2017: 32 · 2016: 37 · 2015: 28 · 2014: 36 · 2013: 38 · 2012: 41
- FWCI
- 39.19
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Clinical Investigation (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- CentAUR (University of Reading) (submittedVersion)
- Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
- Funders
- Crohn's and Colitis Foundation
- Crohn's and Colitis Foundation of Canada
- Canadian Association of Gastroenterology
- Fondation pour la Recherche Médicale
- Alberta Heritage Foundation for Medical Research
- National Institutes of Health (DK43207, DK57480)
- Canadian Institutes of Health Research (DK43207)
- National Institute of Diabetes and Digestive and Kidney Diseases (DK 43207, R01DK043207, DK-57480, R56DK043207)
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Health Sciences › Medicine › Physiology (medical) › Pain Mechanisms and Treatments
- Health Sciences › Medicine › Gastroenterology › Inflammatory Bowel Disease
- Keywords
- irritable bowel syndrome, visceral pain, proteolytic activity, NF-κB, trypsin, tryptase, protease-activated receptor 2, sensory neuron sensitization, visceral hypersensitivity, allodynia, serine protease inhibitors, colonic biopsy
- MeSH terms
- Adult, alpha 1-Antitrypsin, Colon, Female, Humans, Hyperalgesia, Male, Middle Aged, Neurons, Afferent, Endopeptidases, Trypsin, Abdominal Pain, Serine Proteinase Inhibitors, NF-kappa B, Irritable Bowel Syndrome, Receptor, PAR-2, 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 ›
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