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Kreiss L, Thoma OM, Lemire S, Lechner K, Carlé B, Dilipkumar A, Kunert T, Scheibe K, Heichler C, Merten AL, Weigmann B, Neufert C, Hildner K, Vieth M, Neurath MF, Friedrich O, Schürmann S, Waldner MJ. Label-Free Characterization and Quantification of Mucosal Inflammation in Common Murine Colitis Models With Multiphoton Imaging. Inflamm Bowel Dis 2022; 28:1637-1646. [PMID: 35699622 PMCID: PMC9629455 DOI: 10.1093/ibd/izac114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Clinical challenges in inflammatory bowel diseases require microscopic in vivo evaluation of inflammation. Here, label-free imaging holds great potential, and recently, our group demonstrated the advantage of using in vivo multiphoton endomicroscopy for longitudinal animal studies. This article extends our previous work by in-depth analysis of label-free tissue features in common colitis models quantified by the multiphoton colitis score (MCS). METHODS Fresh mucosal tissues were evaluated from acute and chronic dextran sulfate sodium (DSS), TNBS, oxazolone, and transfer colitis. Label-free imaging was performed by using second harmonic generation and natural autofluorescence. Morphological changes in mucosal crypts, collagen fibers, and cellularity in the stroma were analyzed and graded. RESULTS Our approach discriminated between healthy (mean MCS = 2.5) and inflamed tissue (mean MCS > 5) in all models, and the MCS was validated by hematoxylin and eosin scoring of the same samples (85.2% agreement). Moreover, specific characteristics of each phenotype were identified. While TNBS, oxazolone, and transfer colitis showed high cellularity in stroma, epithelial damage seemed specific for chronic, acute DSS and transfer colitis. Crypt deformations were mostly observed in acute DSS. CONCLUSIONS Quantification of label-free imaging is promising for in vivo endoscopy. In the future, this could be valuable for monitoring of inflammatory pathways in murine models, which is highly relevant for the development of new inflammatory bowel disease therapeutics.
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Affiliation(s)
- Lucas Kreiss
- Address correspondence to: Lucas Kreiss, Dr.-Ing, Institute of Medical Biotechnology, Paul-Gordan-Str 3, 91052 Erlangen, Germany ()
| | | | - Sarah Lemire
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Kristina Lechner
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Birgitta Carlé
- Institute of Medical Biotechnology, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany
| | - Ashwathama Dilipkumar
- Institute of Medical Biotechnology, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany
| | - Timo Kunert
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Kristina Scheibe
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Christina Heichler
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Anna-Lena Merten
- Institute of Medical Biotechnology, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany
| | - Benno Weigmann
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Clemens Neufert
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Kai Hildner
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Michael Vieth
- Institute of Pathology, Klinikum Bayreuth, Bayreuth, Germany,Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany,Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander UniversityErlangen-Nürnberg, Erlangen, Germany
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