Id |
Subject |
Object |
Predicate |
Lexical cue |
T372 |
0-48 |
Sentence |
denotes |
Immunological Biomarkers in the Peripheral Blood |
T373 |
49-201 |
Sentence |
denotes |
Immunological biomarkers are particularly important, as immunopathology has been suggested as a primary driver of morbidity and mortality with COVID-19. |
T374 |
202-307 |
Sentence |
denotes |
Several cytokines and other immunologic parameters have been correlated with COVID-19 severity (Table 1). |
T375 |
308-578 |
Sentence |
denotes |
Most notably, elevated IL-6 levels were detected in hospitalized patients, especially critically ill patients, in several studies and are associated with ICU admission, respiratory failure, and poor prognosis (Chen et al., 2020g, Huang et al., 2020b, Liu et al., 2020f). |
T376 |
579-829 |
Sentence |
denotes |
Increased IL-2R, IL-8, IL-10, and GM-CSF have been associated with disease severity as well, but studies are limited, and further studies with larger cohorts of patients are needed to indicate predictive power (Gong et al., 2020, Zhou et al., 2020b). |
T377 |
830-949 |
Sentence |
denotes |
Conflicting results regarding IL-1β and IL-4 have been reported (Fu et al., 2020, Gong et al., 2020, Wen et al., 2020). |
T378 |
950-1241 |
Sentence |
denotes |
Although elevated cytokine concentrations have been widely described in COVID-19 patients, the vast majority (including IL-6, IL-10, IL-18, CTACK, and IFN-γ) do not seem to have prognostic value, because they do not always differentiate moderate cases from severe cases (Yang et al., 2020b). |
T379 |
1242-1305 |
Sentence |
denotes |
This stratification was possible with IP-10, MCP-3, and IL-1ra. |
T380 |
1306-1633 |
Sentence |
denotes |
While there are reports that levels of IL-6 at first assessment might predict respiratory failure (Herold et al., 2020), other publications with longitudinal analyses demonstrated that IL-6 increases fairly late during the disease’s course, consequently compromising its prognostic value at earlier stages (Zhou et al., 2020a). |
T381 |
1634-1931 |
Sentence |
denotes |
Liu et al. developed a web-based tool using k-means clustering to predict prognosis in terms of death or hospital discharge of COVID-19 patients using age, comorbidities (binary), and baseline log helper T cell count (TH), log suppressor T cell count (TS), and log TH/TS ratio (Liu et al., 2020e). |
T382 |
1932-2140 |
Sentence |
denotes |
Total T cell, helper T cell, and suppressor T cell counts were significantly lower and the TH/TS ratio was significantly higher in patients who died from infection as compared to patients who were discharged. |
T383 |
2141-2391 |
Sentence |
denotes |
Importantly, most serological and immunological changes observed in severe cases are associated with disease severity but cannot necessarily serve as predictive factors, as they may not have utility in early identification of patients at higher risk. |
T384 |
2392-2600 |
Sentence |
denotes |
Discovery of truly predictive biomarkers and potential drivers of hyperinflammatory processes requires comprehensive profiling of asymptomatic and mild cases and longitudinal studies that are limited to date. |
T385 |
2601-2710 |
Sentence |
denotes |
Confounding variables including age, gender, and comorbidities may dramatically affect associations observed. |
T386 |
2711-2986 |
Sentence |
denotes |
In addition, direct correlation with patient viral load will be important to provide a greater understanding of underlying causes of morbidity and mortality in COVID-19 and the contribution of viral infectivity, hyperinflammation, and host tolerance (Medzhitov et al., 2012). |
T387 |
2987-3194 |
Sentence |
denotes |
In summary, lymphopenia, increases in proinflammatory markers and cytokines, and potential blood hypercoagulability characterize severe COVID-19 cases with features reminiscent of cytokine release syndromes. |
T388 |
3195-3299 |
Sentence |
denotes |
This correlates with a diverse clinical spectrum ranging from asymptomatic to severe and critical cases. |
T389 |
3300-3424 |
Sentence |
denotes |
During the incubation period and early phase of the disease, leukocyte and lymphocyte counts are normal or slightly reduced. |
T390 |
3425-3588 |
Sentence |
denotes |
After SARS-CoV-2 binds to ACE2 overexpressing organs, such as the gastrointestinal tracts and kidneys, increases in non-specific inflammation markers are observed. |
T391 |
3589-3823 |
Sentence |
denotes |
In more severe cases, a marked systemic release of inflammatory mediators and cytokines occurs, with corresponding worsening of lymphopenia and potential atrophy of lymphoid organs, impairing lymphocyte turnover (Terpos et al., 2020). |