Cited by 1,713Inflammatory Bowel DiseasePsoriasis: Treatment and PathogenesisOcular Diseases and Behçet’s Syndrome

Increased expression of interleukin 17 in inflammatory bowel disease

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Fujino, S, Andoh, A, Bamba, S, Ogawa, A, Hata, K, Araki, Y, Bamba, T, Fujiyama, Y·2003·Gut

Abstract

Background and aim: Interleukin (IL) 17 is a cytokine which exerts strong proinflammatory activities. In this study we evaluated changes in IL-17 expression in the inflamed mucosa and in the serum of patients with inflammatory bowel disease (IBD). Methods: Tissue samples were obtained endoscopically or surgically from patients with ulcerative colitis (UC) (n=20), Crohn’s disease (CD) (n=20), infectious colitis (n=5), ischaemic colitis (n=8), and normal colorectal tissues (n=15). IL-17 expression was evaluated by a standard immunohistochemical procedure. Serum IL-17 levels were determined by ELISA. IL-17 mRNA expression was analysed by reverse transcriptase-polymerase chain reaction. Results: IL-17 expression was not detected in samples from normal colonic mucosa, infectious colitis, or ischaemic colitis. In the inflamed mucosa of active UC and CD patients, IL-17 expression was clearly detectable in CD3 + T cells or CD68 + monocytes/macrophages. The average number of IL-17 + cells was significantly increased in active UC and CD patients compared with inactive patients. IL-17 mRNA expression was not detected in normal mucosa but was detectable in the mucosa from active UC and CD patients. IL-17 was not detected in the sera from normal individuals, infectious colitis, or ischaemic colitis patients but IL-17 levels were significantly elevated in IBD patients. Conclusions: IL-17 expression in the mucosa and serum was increased in IBD patients. It is likely that IL-17 expression in IBD may be associated with altered immune and inflammatory responses in the intestinal mucosa.

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  • In experimental models of psoriasis, Th17 cells are considered the main pathogenic T cell population driving disease.

    “In experimental models of psoriasis, Th17 cells are thought to be the main pathogenic T cell population driving disease.”

    From TH17 cell heterogeneity and its role in tissue inflammation (2023) · cites this paper as [119]

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  1. Katz Y, Nadiv O, Beer Y. Interleukin-17 enhances tumor necrosis factor alpha-induced synthesis of interleukins 1, 6, and 8 in skin and synovial fibroblasts: a possible role as a "fine-tuning cytokine" in inflammation processes. Arthritis Rheum 2001;44:2176-84.
  2. LeGrand A, Fermor B, Fink C, et al. Interleukin-1, tumor necrosis factor alpha, and interleukin-17 synergistically up-regulate nitric oxide and prostaglandin E2 production in explants of human osteoarthritic knee menisci. Arthritis Rheum 2001;44:2078-83.
  3. Kurasawa K, Hirose K, Sano H, et al. Increased interleukin-17 production in patients with systemic sclerosis. Arthritis Rheum 2000;43:2455-63.
  4. Albanesi C, Scarponi C, Cavani A, et al. Interleukin-17 is produced by both Th1 and Th2 lymphocytes, and modulates interferon-γ-and interleukin-4-induced activation of human keratinocytes. J Invest Dermatol 2000;115:81-7.

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Authors
Fujino, S., Andoh, A., Bamba, S., Ogawa, A., Hata, K., Araki, Y., Bamba, T., & Fujiyama, Y.
Affiliations
Shiga University of Medical Science (JP)
Corresponding author
Andoh, A
Venue
Gut
Publisher
BMJ
Published
2003-01
Volume
52
Issue
1
Pages
65-70
ISSN
  • 0017-5749 (ISSN-L)
  • 1468-3288
OpenAlex
W2126874760
Cited by
1,713
References
49
Citations by year
2026: 26 · 2025: 61 · 2024: 57 · 2023: 61 · 2022: 75 · 2021: 74 · 2020: 71 · 2019: 72 · 2018: 78 · 2017: 82 · 2016: 90 · 2015: 79 · 2014: 105 · 2013: 124 · 2012: 110
FWCI
5.83
Type
journal article
Language
en
Open access
Locations
  • Gut (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology (13470119, 12470121)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Ophthalmology › Ocular Diseases and Behçet’s Syndrome
Keywords
IL-17, inflammatory bowel disease, ulcerative colitis, Crohn's disease, intestinal mucosa inflammation, CD3+ T cells, CD68+ macrophages, infectious colitis, ischemic colitis, inflammatory cytokines
MeSH terms
Acute Disease, Colitis, Colitis, Ulcerative, Crohn Disease, Humans, Immunohistochemistry, Intestinal Mucosa, Macrophages, Monocytes, RNA, Messenger, T-Lymphocytes, Inflammatory Bowel Diseases, Case-Control Studies, Colitis, Ischemic, Reverse Transcriptase Polymerase Chain Reaction, Interleukin-17

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