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Published on: September 24, 2020
Coronavirus disease 2019 in critically ill patients: can we re-program the immune system? A primer for Intensivists
Fiorenza Ferrari1,2, Federico Visconti3, Mara De Amici4
1Department of Anesthesia and Intensive Care Unit, IRCCS San Matteo Hospital, University of Pavia, Pavia, Italy - fioreferrari28@gmail.com.
Insights
The immune response is key to controlling Coronavirus disease 2019 (COVID-19). Measuring cytokine levels and lymphocyte subsets can help manage critically ill COVID-19 patients and guide new therapies.
Area of Science:
- Immunology
- Virology
- Critical Care Medicine
Background:
- Coronavirus disease 2019 (COVID-19) emerged in late 2019, causing a global pandemic.
- Multiorgan damage in COVID-19 may result from direct viral effects or a dysregulated host immune response.
- Critically ill patients often exhibit a "cytokine storm" and impaired innate immunity.
Purpose of the Study:
- To review the immune response mechanisms during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.
- To highlight the clinical significance of monitoring immune markers in severe COVID-19.
- To support the development of novel therapeutic strategies.
Main Methods:
- Literature review summarizing current understanding of SARS-CoV-2 immunology.
- Analysis of immune system's role in COVID-19 pathogenesis.
- Discussion of diagnostic and therapeutic implications.
Main Results:
- The immune response is critical for viral clearance but can also contribute to pathology.
- Imbalances in cytokine production and lymphocyte populations are characteristic of severe COVID-19.
- Plasma cytokine levels and circulating lymphocyte subsets are valuable indicators for patient management.
Conclusions:
- Understanding the immune response to SARS-CoV-2 is crucial for effective treatment.
- Monitoring specific immune markers can aid in the follow-up of critically ill COVID-19 patients.
- Targeting immune dysregulation offers potential for new therapeutic interventions.
Abstract:
In December 2019, Coronavirus disease 2019 (COVID-19) emerged in Wuhan and rapidly spread around the word. The immune response is essential to control and eliminate CoV infections, however, multiorgan damage might be due to direct SARS-CoV2 action against the infected organ cells, as well as an imbalanced host immune response. In effect, a "cytokines storm" and an impaired innate immunity were found in the COVID-19 critically ill patients. In this review, we summarized the virus immune response steps, underlying the relevance of introducing the measurement of plasma cytokine levels and of circulating lymphocyte subsets in clinical practice for the follow-up of critically ill COVID-19 patients and support new therapy.
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