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Review
. 2020 Sep;50(9):e13276.
doi: 10.1111/eci.13276. Epub 2020 Jul 5.

COVID-19: Focus on the lungs but do not forget the gastrointestinal tract

Wiktor Smyk  1 , Maciej K Janik  1 , Piero Portincasa  2 , Piotr Milkiewicz  1 , Frank Lammert  3 , Marcin Krawczyk  3   4
Affiliations
Review

COVID-19: Focus on the lungs but do not forget the gastrointestinal tract

Wiktor Smyk et al. Eur J Clin Invest. 2020 Sep.

Abstract

The coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 was declared in the last weeks as global pandemic. Currently affecting more than 5 000 000 individuals worldwide, COVID-19 is most commonly associated with symptoms caused by the acute respiratory distress syndrome (ARDS). As the number of infected individuals increases, we are learning that not only lungs, but also other organs can be affected by the virus. The gastrointestinal symptoms, for example diarrhoea, vomiting, nausea or abdominal pain, are frequent in patients with COVID-19. Moreover, alimentary tract symptoms may precede the respiratory presentation of SARS-CoV-2 infection. This can lead to delayed diagnosis and inappropriate management of infected patients. In addition, SARS-CoV-2 nucleic acid can be detected in faeces of infected patients and rectal swabs are even reported to remain positive for a longer period of time than nasopharyngeal swabs. Here, we aim to provide an update on the gastrointestinal involvement of COVID-19 presenting the symptoms that can be encountered in infected patients. We address the role of angiotensin-converting enzyme 2 (ACE2), as a functional receptor for SARS-CoV-2, which also was found in the gastrointestinal tract. Finally, we briefly discuss faecal shedding of SARS-CoV-2 and its potential role in the pathogenesis of the disease.

Keywords: SARS-CoV-2; coronavirus; diarrhoea; faecal-oral transmission; gallbladder.

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Conflict of interest statement

There are no conflicts of interest.

References

    1. Verity R, Okell LC, Dorigatti I, et al. Estimates of the severity of coronavirus disease 2019: a model‐based analysis. Lancet Infect Dis. 2020;20(6):669‐677. - PMC - PubMed
    1. Cui J, Li F, Shi ZL. Origin and evolution of pathogenic coronaviruses. Nat Rev Microbiol. 2019;17(3):181‐192. - PMC - PubMed
    1. Mallapaty S. Coronavirus can infect cats ‐ dogs, not so much. Nature. 2020. - PubMed
    1. Coronaviridae Study Group of the International Committee on Taxonomy of Viruses . The species severe acute respiratory syndrome‐related coronavirus: classifying 2019‐nCoV and naming it SARS‐CoV‐2. Nat Microbiol. 2020;5(4):536‐544. - PMC - PubMed
    1. de Wit E, van Doremalen N, Falzarano D, Munster VJ. SARS and MERS: recent insights into emerging coronaviruses. Nat Rev Microbiol. 2016;14(8):523‐534. - PMC - PubMed

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