Title:The Role of Platelet in Severe and Fatal Forms of COVID-19
Volume: 22
Issue: 7
Author(s): Edgar L. Esparza-Ibarra, Jorge L. Ayala-Luján, Brenda Mendoza-Almanza, Irma González-Curiel, Susana Godina-González, Marisa Hernández-Barrales and Gretel Mendoza-Almanza *
Affiliation:
- Consejo Nacional de Ciencia y Tecnología, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
Keywords:
COVID-19, SARS-COV-2, platelets, cytokine storm, several COVID form, fatal COVID form.
Abstract: On December 31, 2019, the World Health Organization received a report of
several pneumonia cases in Wuhan, China. The causative agent was later confirmed as
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Since then, the
SARS-CoV-2 virus has spread throughout the world, giving rise in 2020 to the 2019
coronavirus (COVID-19) pandemic, which, according to the world map of the World
Health Organization, has, until May 18, 2021, infected 163,312,429 people and caused
3,386,825 deaths throughout the world. Most critical patients progress rapidly to acute
respiratory distress syndrome (ARDS) and, in underlying form, septic shock, irreversible
metabolic acidosis, blood coagulation dysfunction, or hemostatic and thrombotic
anomalies have been reported as the leading causes of death due to COVID-19. The
main findings in severe and fatal COVID-19 patients make it clear that platelets play a
crucial role in developing severe disease cases. Platelets are the enucleated cells
responsible for hemostasis and thrombi formation; thus, platelet hyperreactivity induced
by pro-inflammatory microenvironments contributes to the "cytokine storm" that
characterizes the more aggressive course of COVID- 19.