Estimation of the platelet component of hemostasis in COVID-19 patients


DOI: https://dx.doi.org/10.18565/therapy.2024.7.43-49

Kadnikov L.I., Izmozherova N.V., Popov A.A., Antropova I.P.

1) Ural State Medical University of the Ministry of Healthcare of Russia, Yekaterinburg; 2) Institute of High-Temperature Electrochemistry of Ural branch of the Russian Academy of Sciences, Yekaterinburg
Abstract. Platelets play a special role in the occurrence of thrombosis in case of COVID-19, as they are involved in maintaining the integrity of blood vessels, regulating hemostasis, and in the process of inflammation.
The aim: to estimate the platelet component of hemostasis in patients with COVID-19.
Materials and methods. Case-control study included 75 patients: group 1 – with COVID-19 (n = 25), group 2 – with COVID-19 and acute coronary syndrome (ACS) (n = 25), group 3 – with ACS without COVID-19 (n = 25). Blood samples were analyzed by a Mindray BC-6800 Plus analyzer. Platelet aggregation with inducers was assessed using a ChronoLog 700 analyzer.
Results. Mean platelet volume (MPV) in group 1 was 11.0 (10.4 ÷ 11.9), in group 2 – 10.8 (10.3 ÷ 11.5), in group 3 – 10.2 (9.8 ÷ 10.7) fl (p < 0.001). Platelet distribution width (PDW) in group 1 was 13.1 (12.0 ÷ 14.5), in group 2 – 12.4 (11.7 ÷ 14.4), in group 3 – 11.9 (11.2 ÷ 12.5) % (p = 0.028), large platelet coefficient (P-LCR) – 33.5 (28.0 ÷ 39.7), 31.7 (26.8 ÷ 37.3) and 27.2 (24.7 ÷ 29.8) %, respectively (p = 0.002). Ratio of the absolute platelet count to the absolute lymphocyte count (PLR) was as follows: in group 1 – 163.4 (100.8 ÷ 237.1), in group 2 – 131.2 (103.5 ÷ 173.1), in group 3 – 113.1 (78.7 ÷ 129.5) (p = 0.019). Platelet aggregation with adenosine diphosphate in group 1 was 61.0 (56.0 ÷ 66.0), in group 2 – 48.5 (28.0 ÷ 57.0), in group 3 – 28.0 (22.0 ÷ 39.0) % (p < 0.001), platelet aggregation with collagen – 65.5 (61.5 ÷ 72.0), 57.0 (41.0 ÷ 67.5) and 54.0 (42.0 ÷ 57.0) %, respectively (p < 0.001), and platelet aggregation with epinephrine – 58.8 (53.0 ÷ 65.0), 40.0 (24.5 ÷ 55.0) and 21.0 (15.0 ÷ 30.0) %, respectively (p < 0.001).
Conclusion. Higher values of MPV, PDW, P-LCR, PLR, platelet aggregation with inducers indicate obvious activation and reactivity of platelets due to the immune-inflammatory component in individuals with COVID-19. Obtained data indicate a significant influence of SARS-CoV-2 at the functional activity of platelets.

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About the Autors


Leonid I. Kadnikov, MD, postgraduate student, Department of pharmacology and clinical pharmacology, Ural State Medical University of the Ministry of Healthcare of Russia. Address: 620028, Yekaterinburg, 3 Repina St.
E-mail: kadn-leonid@mail.ru
ORCID: https://orcid.org/0000-0002-2623-2657
Nadezhda V. Izmozherova, MD, Dr. Sci. (Medicine), head of the Department of pharmacology and clinical pharmacology, Ural State Medical University of the Ministry of Healthcare of Russia, leading researcher at the Institute of High-Temperature Electrochemistry, Ural branch of the Russian Academy of Sciences. Address: 620028, Yekaterinburg, 3 Repina St.
E-mail: nadezhda_izm@mail.ru
ORCID: https://orcid.org/0000-0001-7826-9657
Artem A. Popov, MD, Dr. Sci. (Medicine), head of the Department of hospital therapy and emergency medical care, Ural State Medical University of the Ministry of Healthcare of Russia, leading researcher at the Institute of High-Temperature Electrochemistry, Ural branch of the Russian Academy of Sciences. Address: 620028, Yekaterinburg, 3 Repina St.
E-mail: art_popov@mail.ru
ORCID: https://orcid.org/0000-0001-6216-2468
Irina P. Antropova, MD, Dr. Sci. (Biology), leading researcher at the Central Research Department, Ural state medical university of the Ministry of Healthcare of Russia, leading researcher at the Institute of High-Temperature Electrochemistry, Ural branch of the Russian Academy of Sciences. Address: 620109, Yekaterinburg, 5 Klyuchevskaya St.
E-mail: aip.hemolab@mail.ru
ORCID: https://orcid.org/0000-0002-9957-2505


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