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suck abstract from ncbi


10.3390/ijms22031352

http://scihub22266oqcxt.onion/10.3390/ijms22031352
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33572938!7866373!33572938
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suck abstract from ncbi


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pmid33572938      Int+J+Mol+Sci 2021 ; 22 (3): ä
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  • Expression of the SARS-CoV-2 Receptor ACE2 and Proinflammatory Cytokines Induced by the Periodontopathic Bacterium Fusobacterium nucleatum in Human Respiratory Epithelial Cells #MMPMID33572938
  • Takahashi Y; Watanabe N; Kamio N; Yokoe S; Suzuki R; Sato S; Iinuma T; Imai K
  • Int J Mol Sci 2021[Jan]; 22 (3): ä PMID33572938show ga
  • Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is currently a global public health emergency. Periodontitis, the most prevalent disease that leads to tooth loss, is caused by infection by periodontopathic bacteria. Periodontitis is also a risk factor for pneumonia and the exacerbation of chronic obstructive pulmonary disease, presumably because of the aspiration of saliva contaminated with periodontopathic bacteria into the lower respiratory tract. Patients with these diseases have increased rates of COVID-19 aggravation and mortality. Because periodontopathic bacteria have been isolated from the bronchoalveolar lavage fluid of patients with COVID-19, periodontitis may be a risk factor for COVID-19 aggravation. However, the molecular links between periodontitis and COVID-19 have not been clarified. In this study, we found that the culture supernatant of the periodontopathic bacterium Fusobacterium nucleatum (CSF) upregulated the SARS-CoV-2 receptor angiotensin-converting enzyme 2 in A549 alveolar epithelial cells. In addition, CSF induced interleukin (IL)-6 and IL-8 production by both A549 and primary alveolar epithelial cells. CSF also strongly induced IL-6 and IL-8 expression by BEAS-2B bronchial epithelial cells and Detroit 562 pharyngeal epithelial cells. These results suggest that when patients with mild COVID-19 frequently aspirate periodontopathic bacteria, SARS-CoV-2 infection is promoted, and inflammation in the lower respiratory tract may become severe in the presence of viral pneumonia.
  • |Angiotensin-Converting Enzyme 2/genetics/*metabolism[MESH]
  • |COVID-19/pathology/virology[MESH]
  • |Cell Line[MESH]
  • |Culture Media, Conditioned/*chemistry/pharmacology[MESH]
  • |Cytokines/*metabolism[MESH]
  • |Epithelial Cells/cytology/metabolism/microbiology[MESH]
  • |Fusobacterium nucleatum/*metabolism[MESH]
  • |Humans[MESH]
  • |Interleukin-6/metabolism[MESH]
  • |Interleukin-8/metabolism[MESH]
  • |SARS-CoV-2/isolation & purification[MESH]


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