PMC:7402624 / 24155-26371 JSONTXT 10 Projects

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Id Subject Object Predicate Lexical cue
T146 0-258 Sentence denotes A key feature of COVID-19 disease is thought to be an inflammatory response that, at least in some patients, is linked to clinical disease manifestation (2, 4) and high levels of chemokines/cytokines, including IL-1RA, IL-6, IL-8, IL-10, and CXCL10 (11, 41).
T147 259-514 Sentence denotes To investigate the potential connection of inflammatory pathways to T cell responses, we performed 31-plex Luminex analysis on paired plasma and culture supernatants of anti-CD3/anti-CD28 stimulated PBMC from a subset of COVID-19 patients and HD controls.
T148 515-679 Sentence denotes Due to biosafety restrictions, only eight COVID-19 patient blood samples that were confirmed SARS-CoV2 RNA negative in the blood by PCR could be studied (fig. S4A).
T149 680-853 Sentence denotes Half of these COVID-19 patients had plasma CXCL10 concentrations that were ~15 fold higher than HD controls, whereas the remainder showed only a limited increase (fig. S4B).
T150 854-912 Sentence denotes CXCL9, CCL2, and IL-1RA were also significantly increased.
T151 913-1033 Sentence denotes In contrast, chemokines involved in the recruitment of eosinophils (eotaxin) or activated T cells (CCL5) were decreased.
T152 1034-1263 Sentence denotes IL-6 was not elevated in this group of patients, in contrast to the subset of individuals tested clinically (fig. S1B), potentially because IL-6 was measured in the hospital setting often when systemic inflammation was suspected.
T153 1264-1531 Sentence denotes Following stimulation in vitro, PBMC from COVID-19 patients produced more CCL2, CXCL10, eotaxin, and IL-1RA than HD (fig. S4, C and D) and concentrations of CXCL10 and CCL2 correlated between the matched supernatant from stimulated PBMC and plasma samples (fig. S4E).
T154 1532-1664 Sentence denotes Finally, we investigated whether CD8 T cells from COVID-19 subjects were capable of producing IFNɣ following polyclonal stimulation.
T155 1665-1886 Sentence denotes Following ɑCD3+ɑCD28 stimulation, similar proportions of CD8 T cells from COVID-19 patients and HD controls produced IFNɣ, suggesting that PBMC from COVID-19 patients were responsive to TCR crosslinking (fig. S4, F to H).
T156 1887-2044 Sentence denotes The ability of T cells to produce IFNɣ following stimulation occurred in patients with increases in KI67 as well as patients with low KI67 (fig. S4, F to H).
T157 2045-2216 Sentence denotes Taken together, these data support the notion that a subgroup of COVID-19 patients has elevated systemic cytokines and chemokines, including myeloid recruiting chemokines.