Persistent Gut-Immune Axis dysregulation in long-term Post-COVID Syndrome: Insights from a prospective, observational, cross-sectional case-control study.

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Title: Persistent Gut-Immune Axis dysregulation in long-term Post-COVID Syndrome: Insights from a prospective, observational, cross-sectional case-control study.
Authors: Augustin M; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany. Electronic address: max.augustin@gesundheitsverbund.at., Picard L; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany., Rauschning D; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany; Department I B for Internal Medicine, Bundeswehr Central Hospital Koblenz, Koblenz, Germany., Zenev E; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria., Pracht E; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany., de Silva US; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany., Heyn F; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany., Ball M; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany., Rostocki I; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria., Herzog G; Department I B for Internal Medicine, Bundeswehr Central Hospital Koblenz, Koblenz, Germany., Dumoulin FL; Department for Internal Medicine, Gastroenterology and Diabetology, Gemeinschaftskrankenhaus Bonn, Site St. Elisabeth, Bonn, Germany., Lin TH; Department I of Internal Medicine, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria., Kirschner H; Department of Pathology, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria., Petschnak S; Department of Pathology, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria., Heger E; Department of Virology, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany., Fumero EF; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany., Albert MC; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany., Walczak H; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany., Stingl M; CerePrax 1150 Vienna, Austria., Födinger M; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria., Theobald SJ; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany., Zoufaly A; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria., Wenisch C; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria., Rybniker J; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany., Lehmann C; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.
Source: Mucosal immunology [Mucosal Immunol] 2026 Jun; Vol. 19 (3), pp. 100328. Date of Electronic Publication: 2026 Mar 05.
Publication Type: Journal Article; Observational Study
Journal Info: Publisher: Elsevier Country of Publication: United States NLM ID: 101299742 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1935-3456 (Electronic) Linking ISSN: 19330219 NLM ISO Abbreviation: Mucosal Immunol Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: Persistent Gut-Immune Axis dysregulation in long-term Post-COVID Syndrome: Insights from a prospective, observational, cross-sectional case-control study.
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  Data: <searchLink fieldCode="AU" term="%22Augustin+M%22">Augustin M</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany. Electronic address: max.augustin@gesundheitsverbund.at.<br /><searchLink fieldCode="AU" term="%22Picard+L%22">Picard L</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Rauschning+D%22">Rauschning D</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany; Department I B for Internal Medicine, Bundeswehr Central Hospital Koblenz, Koblenz, Germany.<br /><searchLink fieldCode="AU" term="%22Zenev+E%22">Zenev E</searchLink>; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Pracht+E%22">Pracht E</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22de+Silva+US%22">de Silva US</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Heyn+F%22">Heyn F</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Ball+M%22">Ball M</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Rostocki+I%22">Rostocki I</searchLink>; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Herzog+G%22">Herzog G</searchLink>; Department I B for Internal Medicine, Bundeswehr Central Hospital Koblenz, Koblenz, Germany.<br /><searchLink fieldCode="AU" term="%22Dumoulin+FL%22">Dumoulin FL</searchLink>; Department for Internal Medicine, Gastroenterology and Diabetology, Gemeinschaftskrankenhaus Bonn, Site St. Elisabeth, Bonn, Germany.<br /><searchLink fieldCode="AU" term="%22Lin+TH%22">Lin TH</searchLink>; Department I of Internal Medicine, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Kirschner+H%22">Kirschner H</searchLink>; Department of Pathology, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Petschnak+S%22">Petschnak S</searchLink>; Department of Pathology, Klinik Favoriten, Vienna Healthcare Group, 1100 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Heger+E%22">Heger E</searchLink>; Department of Virology, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Fumero+EF%22">Fumero EF</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Albert+MC%22">Albert MC</searchLink>; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Walczak+H%22">Walczak H</searchLink>; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Stingl+M%22">Stingl M</searchLink>; CerePrax 1150 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Födinger+M%22">Födinger M</searchLink>; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Theobald+SJ%22">Theobald SJ</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Zoufaly+A%22">Zoufaly A</searchLink>; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria; Research Lab, Faculty of Medicine, Sigmund Freud University, 1020 Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Wenisch+C%22">Wenisch C</searchLink>; Department IV of Internal Medicine, Klinik Favoriten, 1100 Vienna Healthcare Group, Vienna, Austria.<br /><searchLink fieldCode="AU" term="%22Rybniker+J%22">Rybniker J</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.<br /><searchLink fieldCode="AU" term="%22Lehmann+C%22">Lehmann C</searchLink>; Department I of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne 50937 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.
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  Data: <searchLink fieldCode="JN" term="%22101299742%22">Mucosal immunology</searchLink> [Mucosal Immunol] 2026 Jun; Vol. 19 (3), pp. 100328. <i>Date of Electronic Publication: </i>2026 Mar 05.
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