Article ; Online: Evidence of SARS-CoV-2-Specific T-Cell-Mediated Myocarditis in a MIS-A Case.
2021 Volume 12, Page(s) 779026
Abstract: ... Histopathological evaluation of the heart showed myocardial necrosis surrounded by cytotoxic T-cells and tissue ... repair macrophages. Myocardial T-cell receptor (TCR) sequencing revealed hyper-dominant clones ... frequency T-cell clones that mediated fatal myocarditis. ...
Abstract | A 26-year-old otherwise healthy man died of fulminant myocarditis. Nasopharyngeal specimens collected premortem tested negative for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Histopathological evaluation of the heart showed myocardial necrosis surrounded by cytotoxic T-cells and tissue-repair macrophages. Myocardial T-cell receptor (TCR) sequencing revealed hyper-dominant clones with highly similar sequences to TCRs that are specific for SARS-CoV-2 epitopes. SARS-CoV-2 RNA was detected in the gut, supporting a diagnosis of multisystem inflammatory syndrome in adults (MIS-A). Molecular targets of MIS-associated inflammation are not known. Our data indicate that SARS-CoV-2 antigens selected high-frequency T-cell clones that mediated fatal myocarditis. |
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MeSH term(s) | Adult ; COVID-19/complications ; COVID-19/immunology ; COVID-19/pathology ; Humans ; Male ; Myocarditis/immunology ; Myocarditis/pathology ; Myocarditis/virology ; RNA, Viral/analysis ; SARS-CoV-2 ; Systemic Inflammatory Response Syndrome/immunology ; Systemic Inflammatory Response Syndrome/pathology ; T-Lymphocytes/immunology |
Chemical Substances | RNA, Viral |
Language | English |
Publishing date | 2021-12-09 |
Publishing country | Switzerland |
Document type | Case Reports ; Journal Article ; Research Support, N.I.H., Intramural |
ZDB-ID | 2606827-8 |
ISSN | 1664-3224 ; 1664-3224 |
ISSN (online) | 1664-3224 |
ISSN | 1664-3224 |
DOI | 10.3389/fimmu.2021.779026 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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