Zusammenfassung
Hintergrund
Die intestinale Mikrobiota spielt in der Pathogenese chronisch-entzündlicher Darmerkrankungen, wie M. Crohn und Colitis ulcerosa, sowie metabolischer Krankheiten eine große Rolle.
Fragestellung
Es stellt sich die Frage, welche Rolle der Darm als Grenzfläche zwischen Bakterien und Wirtsfunktionen spielt.
Methoden
Aktuelle Forschungsergebnisse über die Funktion des Darms und Bakterien-Wirt-Interaktionen werden zusammengefasst und bewertet.
Ergebnisse und Diskussion
Bei zahlreichen Erkrankungen wurde ein Ungleichgewicht in der Zusammensetzung und Funktion der Mikrobiota im Darm (Dysbiose) nachgewiesen. Dysbiose in Kombination mit einem Funktionsverlust der immunologischen Grenzfläche im Darm wird als gemeinsames pathophysiologisches Merkmal für sowohl chronisch-entzündliche als auch metabolische Erkrankungen diskutiert. Die kausalen Zusammenhänge sind aufgrund fehlender prospektiver Studien und widersprüchlicher Daten allerdings nicht für alle Erkrankungen vollständig geklärt. Fäkaltransplantationen oder gezielte mikrobielle Therapien sind ein möglicher Ansatz, um chronische Erkrankungen zu behandeln, bedürfen aber der weiteren klinischen Validierung.
Abstract
Background
The intestinal microbiome plays an essential role in the development of chronic inflammatory diseases, such as inflammatory bowel disease (IBD) or metabolic disorders.
Objectives
What is the pathophysiological role of the intestine as an interface between bacterial and host functions?
Methods
Recent findings related to intestinal function and microbe–host interactions in the context of inflammatory and metabolic disorders are reviewed.
Results and conclusions
Changes in gut microbiota composition and function (dysbiosis) are associated with a variety of different pathologies. Dysbiosis in combination with the loss of gut barrier and immune functions are shared in inflammatory and metabolic disorders. Causal mechanisms for the interaction of dysbiotic microbial communities in the gut and disease onset require additional clinical and experimental validation including prospective cohort and gnotobiotic animal studies. Fecal microbiota transplantation and targeted microbial therapies are promising strategies for clinical intervention; however many questions need to be addressed including disease-specific selection of donor microbiota or synthetic bacterial consortia, application strategies and risk evaluation.
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V. Schüppel und D. Haller geben an, dass kein Interessenkonflikt besteht.
Dieser Beitrag beinhaltet keine von den Autoren durchgeführten Studien an Menschen oder Tieren.
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Schüppel, V., Haller, D. Das Mikrobiom bei chronischen Erkrankungen. Diabetologe 12, 420–427 (2016). https://doi.org/10.1007/s11428-016-0124-3
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DOI: https://doi.org/10.1007/s11428-016-0124-3
Schlüsselwörter
- Chronisch-entzündliche Darmerkrankung
- Intestinale Mikrobiota
- Dysbiose
- Metabolische Erkrankungen
- Mikrobielle Therapien