ArticleGut2014
Collagen degradation and neutrophilic infiltration: a vicious circle in inflammatory bowel disease.
Article in Gut, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
94 citing papers in PubMed, 1 synthesis or guideline pooled it, 161 citations in OpenAlex.
- Immunological Traits of Patients with Coexistent Inflammatory Bowel Disease and Periodontal Disease: A Systematic Review.International journal of environmental research and public health · 2021Pooled it
- An Oral Rinse Active Matrix Metalloproteinase-8 Point-of-Care Immunotest May Be Less Accurate in Patients with Crohn's Disease.Biomolecules · 2020Trial
- Timing-dependent protective and therapeutic effects of ethyl pyruvate in trinitrobenzene sulfonic acid-induced experimental colitis.Experimental physiology · 2026Article
- An update on the landscape of collagen bioactive fragments.The FEBS journal · 2026Review
- Diagnostic Accuracy of Salivary Periodontal Biomarkers Is Reduced in Patients With Crohn's Disease.Clinical and experimental dental research · 2026Article
- Dendritic Cells Derived MMP9 Fuels Sepsis-Induced Cardiac Dysfunction Through JNK/AP1 Driven Pro-Inflammatory Cytokine and Nitric Oxide Storm.Inflammation · 2026Article
- Genome-Wide Dissection of the Neutrophil-to-Lymphocyte Ratio Uncovers Polygenic Determinants Linked to Inflammatory Gastrointestinal Disorder Susceptibility.Biomedicines · 2026Article
- Inflammatory bowel disease and extracellular matrix: when victim becomes double agent.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026Review
- The Paradox of NET Involvement in the Pathogenesis of Inflammatory Bowel Disease.Inflammatory bowel diseases · 2026Review
- Proteases in intestinal health and disease.Nature reviews. Gastroenterology & hepatology · 2026Review
- Microfluidics-enabled polydopamine-coated selenium nanoparticles in hyaluronic hydrogel microspheres for targeted antioxidant and immunomodulatory therapy of ulcerative colitis.Materials today. Bio · 2025Article
- Exogenous pyruvate is therapeutic against colitis by targeting cytosolic phospholipase A2.Genes & diseases · 2025Article
- The function of metalloproteinases in pathophysiology of inflammatory bowel disease and colon cancer.Journal of leukocyte biology · 2025Review
- Serum metabolomics identifies unique inflammatory signatures to distinguish rheumatoid arthritis responders and non-responders to TNF inhibitor therapy.Metabolomics : Official journal of the Metabolomic Society · 2025Article
- The functional role of the extracellular matrix in inflammatory bowel disease associated gut fibrosis.Matrix biology : journal of the International Society for Matrix Biology · 2025Review
- Neutrophils and NETs in Pathophysiology and Treatment of Inflammatory Bowel Disease.International journal of molecular sciences · 2025Review
- Review
- How the Western Diet Thwarts the Epigenetic Efforts of Gut Microbes in Ulcerative Colitis and Its Association with Colorectal Cancer.Biomolecules · 2024Review
- Targeted delivery of the probiotic Saccharomyces boulardii to the extracellular matrix enhances gut residence time and recovery in murine colitis.Nature communications · 2024Article
- RNA Expression of MMP12 Is Strongly Associated with Inflammatory Bowel Disease and Is Regulated by Metabolic Pathways in RAW 264.7 Macrophages.International journal of molecular sciences · 2024Article
34 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
17 authors at 5 institutions in 2 countries.
Funding
Abstract
objectiveProline-glycine-proline (PGP) has been shown to have chemotactic effects on neutrophils via CXCR2 in several lung diseases. PGP is derived from collagen by the combined action of matrix metalloproteinase (MMP) 8 and/or MMP9 and prolyl endopeptidase (PE). We investigated the role of PGP in inflammatory bowel disease (IBD).
designIn intestinal tissue from patients with IBD and mice with dextran sodium sulfate (DSS)-induced colitis, MMP8, MMP9 and PE were evaluated by ELISA, immunoblot and immunohistochemistry. Peripheral blood polymorphonuclear cell (PMN) supernatants were also analysed accordingly and incubated with collagen to assess PGP generation ex vivo. PGP levels were measured by mass spectrometry, and PGP neutralisation was achieved with a PGP antagonist and PGP antibodies.
resultsIn the intestine of patients with IBD, MMP8 and MMP9 levels were elevated, while PE was expressed at similar levels to control tissue. PGP levels were increased in intestinal tissue of patients with IBD. Similar results were obtained in intestine from DSS-treated mice. PMN supernatants from patients with IBD were far more capable of generating PGP from collagen ex vivo than healthy controls. Furthermore, PGP neutralisation during DSS-induced colitis led to a significant reduction in neutrophil infiltration in the intestine.
conclusionsThe proteolytic cascade that generates PGP from collagen, as well as the tripeptide itself, is present in the intestine of patients with IBD and mice with DSS-induced colitis. PGP neutralisation in DSS-treated mice showed the importance of PGP-guided neutrophilic infiltration in the intestine and indicates a vicious circle in neutrophilic inflammation in IBD.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.