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  1. Article: Profiling of Oral Microbiota and Cytokines in COVID-19 Patients.

    Iebba, Valerio / Zanotta, Nunzia / Campisciano, Giuseppina / Zerbato, Verena / Di Bella, Stefano / Cason, Carolina / Luzzati, Roberto / Confalonieri, Marco / Palamara, Anna Teresa / Comar, Manola

    Frontiers in microbiology

    2021  Volume 12, Page(s) 671813

    Abstract: ... microbiota structure and inflammatory profile of 26 naive severe coronavirus disease 2019 (COVID-19) patients ... immunoassays, respectively. A significant diminution in species richness was observed in COVID-19 patients ... Recent data from transcriptome analysis show that the oral cavity mucosa harbors high levels ...

    Abstract The presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been recently demonstrated in the sputum or saliva, suggesting how the shedding of viral RNA outlasts the end of symptoms. Recent data from transcriptome analysis show that the oral cavity mucosa harbors high levels of angiotensin-converting enzyme 2 (ACE2) and transmembrane protease, serine 2 (TMPRSS2), highlighting its role as a double-edged sword for SARS-CoV-2 body entrance or interpersonal transmission. Here, we studied the oral microbiota structure and inflammatory profile of 26 naive severe coronavirus disease 2019 (COVID-19) patients and 15 controls by 16S rRNA V2 automated targeted sequencing and magnetic bead-based multiplex immunoassays, respectively. A significant diminution in species richness was observed in COVID-19 patients, along with a marked difference in beta-diversity. Species such as
    Language English
    Publishing date 2021-07-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2021.671813
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Profiling of oral microbiota and cytokines in COVID-19 patients

    Iebba, Valerio / Zanotta, Nunzia / Campisciano, Giuseppina / Zerbato, Verena / Di Bella, Stefano / Cason, Carolina / Morassut, Sara / Luzzati, Roberto / Confalonieri, Marco / Palamara, Anna Teresa / Comar, Manola

    bioRxiv

    Abstract: ... we demonstrate the oral microbiota structure and inflammatory profile of COVID-19 patients. Hospitalized COVID-19 ... patients and matched healthy controls underwent naso/oral-pharyngeal and oral swabs. Microbiota structure ... SIGs). Pro-inflammatory cytokines were distinctive for COVID-19 in both oral and serum samples, and ...

    Abstract SARS-CoV-2 presence has been recently demonstrated in the sputum or saliva, suggesting how the shedding of viral RNA outlasts the end of symptoms. Recent data from transcriptome analysis show that oral cavity mucosa harbors high levels of ACE2 and TMPRSS2, highlighting its role as a double-edged sword for SARS-CoV-2 body entrance or interpersonal transmission. In the present study, for the first time, we demonstrate the oral microbiota structure and inflammatory profile of COVID-19 patients. Hospitalized COVID-19 patients and matched healthy controls underwent naso/oral-pharyngeal and oral swabs. Microbiota structure was analyzed by 16S rRNA V2 automated targeted sequencing, while oral and sera concentrations of 27 cytokines were assessed using magnetic bead-based multiplex immunoassays. A significant diminution in species richness was observed in COVID-19 patients, along with a marked difference in beta-diversity. Species such as Prevotella salivae and Veillonella infantium were distinctive for COVID-19 patients, while Neisseria perflava and Granulicatella elegans were predominant in controls. Interestingly, these two groups of oral species oppositely clustered within the bacterial network, defining two distinct Species Interacting Group (SIGs). Pro-inflammatory cytokines were distinctive for COVID-19 in both oral and serum samples, and we found a specific bacterial consortium able to counteract them, following a novel index called C4 firstly proposed here. We even introduced a new parameter, named CytoCOV, able to predict COVID-19 susceptibility for an unknown subject at 71% of power with an AUC equal to 0.995. This pilot study evidenced a distinctive oral microbiota composition in COVID-19 subjects, with a definite structural network in relation to secreted cytokines. Our results would pave the way for a theranostic approach in fighting COVID-19, trying to enlighten the intimate relationship among microbiota and SARS-CoV-2 infection.
    Keywords covid19
    Language English
    Publishing date 2020-12-14
    Publisher Cold Spring Harbor Laboratory
    Document type Article ; Online
    DOI 10.1101/2020.12.13.422589
    Database COVID19

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