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KMID : 0988920210190040379
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Intestinal Research
2021 Volume.19 No. 4 p.379 ~ p.385
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An overview of the gut side of the SARS-CoV-2 infection
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da Luz Bruna Barbosa
de Oliveira Natalia Mulinari Turin
dos Santos Isabella Wzorek Franca
Paza Luana Zampieron
de Mello Braga Lara Luisa Valerio
da Silva Platner Fernanda
de Paula Werner Maria Fernanda
Fernandes Elizabeth Soares
Maria-Ferreira Daniele
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Abstract
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In late 2019, an outbreak of pneumonia caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) initiated in Wuhan, Hubei province, China. The major clinical symptoms described for coronavirus disease (COVID-19) include respiratory distress and pneumonia in severe cases, and some patients may experience gastrointestinal impairments. In accordance, viral RNA or live infectious virus have been detected in feces of patients with COVID-19. Binding of SARS-CoV-2 to the angiotensin?converting enzyme 2 (ACE2) is a vital pathway for the virus entry into human cells, including those of the respiratory mucosa, esophageal epithelium as well as the absorptive enterocytes from ileum and colon. The interaction between SARS-CoV-2 and ACE2 receptor may decrease the receptor expression and disrupt the function of B0AT1 transporter influencing the diarrhea observed in COVID-19 patients. In this context, a fecal-oral transmission route has been considered and points out a role for the digestive tract in disease transmission and severity. Here, in order to further understand the impact of COVID-19 in human physiology, the cellular and molecular mechanisms of SARS-CoV-2 infection and disease severity are discussed in the context of gastrointestinal disturbances.
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KEYWORD
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Coronavirus, COVID-19, Gastrointestinal manifestations, Gastroenterology, ACE2
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