Zusammenfassung
Die medizinische Mikrobiologie war bis zur Mitte des 20. Jahrhunderts auf den Nachweis und die Identifizierung von pathogenen Mikroorganismen fokussiert. Nur langsam wuchs das Wissen über die wechselseitige Beziehung von Mensch und Mikroorganismen. Kulturunabhängige Analysemethoden ermöglichten erstmals eine vollständige Abbildung der Zusammensetzung des humanen Mikrobioms. Seither wird die Beteiligung des Mikrobioms an der Pathogenese von Krankheiten erforscht. Ziele des Human Microbiome Project und von MetaHIT sind vergleichende Untersuchungen des Mikrobioms gesunder und erkrankter Menschen. Bibliotheken über die lokalisations- und zeitabhängige Komposition der Mikrobiota gesunder Menschen zeigen eine Assoziation abweichender Zusammensetzungen mit bestimmten Krankheiten. Mathematische Korrelation kann jedoch nicht mit biologischer oder medizinischer Kausalität gleichgesetzt werden. In Zukunft müssen die gewonnenen Hypothesen in funktionellen Experimenten validiert und auf praktisch-klinische Relevanz untersucht werden.
Abstract
Until the middle of the 20th century, clinical microbiology was limited to bacterial cultures enabling the detection of pathogenic microorganisms. Knowledge about the mutual relationship between humans and microorganisms has increased slowly. With the introduction of culture-independent analysis methods, comprehensive cataloging of the human microbiome was possible for the first time. Since then, compositional changes in relation to diseases have been studied. The goals of the Human Microbiome Project and MetaHIT include comparative studies of healthy and diseased individuals. Numerous libraries on time- and location-dependent changes of the microbiota composition in human diseases have been created. However, a mathematical correlation does not equal biological or medical relevance. Future research needs to validate the hypotheses generated in these studies in functional experiments and evaluate their true impact on clinical practice.
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P.R. Steinhagen und D.C. Baumgart geben an, dass kein Interessenkonflikt besteht.
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Steinhagen, P.R., Baumgart, D.C. Grundlagen des Mikrobioms. Internist 58, 429–434 (2017). https://doi.org/10.1007/s00108-017-0224-1
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DOI: https://doi.org/10.1007/s00108-017-0224-1