Clinical and immunological characteristics of moderate-to-severe forms of COVID-19 at different levels of the tissue damage marker (lactate dehydrogenase)

Autor: I. P. Sizyakinа, V. Ya. Zakurskayа, N. A. Skripkinа, E. A. Antonova, D. B. Sizyakin
Jazyk: English<br />Russian
Rok vydání: 2021
Předmět:
Zdroj: Медицинский вестник Юга России, Vol 12, Iss 4, Pp 108-115 (2021)
Druh dokumentu: article
ISSN: 2219-8075
2618-7876
DOI: 10.21886/2219-8075-2021-12-4-108-115
Popis: Objective: To study the features of the immune status in patients with a moderate-to-severe course of COVID-19, depending the levels of blood lactate dehydrogenase.Materials and Methods: A total of 24 patients with a moderate-to-severe form of COVID-19 were examined. The control group consisted of 21 healthy volunteers. Methods: clinical, paraclinical (computed tomography of the lungs; complete blood count, blood biochemistry; immunological studies), statistical.Results: Changes in complete blood count and blood biochemistry in patients with moderate-to-severe COVID-19 consist in granulocytosis, lymphopenia, monocytopenia, and an increase in the level of C-reactive protein, lactate dehydrogenase, with a simultaneous decrease in the total protein content. In patients with high levels of lactate dehydrogenase, a redistribution of lymphocyte populations towards B-cells was revealed with a decrease in the total number of T-cells. At the same time, there was a decrease in the production of IgM and IgG and a simultaneous increase in the synthesis of IgA.Conclusions: The increase in blood LDH in COVID-19 patients is associated with a decrease in the content of T-cells due to severe lymphopenia, and a simultaneous increase in the content of B-cells without adequate enhancement of their antibody production function.
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