Zinc content in blood plasma and brain tissue of rats was studied by analytic mass-spectrometry with inductively coupled plasma. In control (saline-treated animal) zinc content in plasma was 3.6±1.4 mg/ml, in the liver - 12.5±2.5 mg/mg, in the spleen - 10.9±4.1 mg/mg, in the brain - 8.7±3.0 mg/mg. After a single intraperitoneal injection of zinc donator acizolum (24 mg/kg) zinc content decreased in all examined tissues, especially in brain. After a course of sequential acizolum injections (seven administrations during two weeks) essential elevation of zinc content in blood plasma and tissues investigated was detected. The maximal increase zinc concentration in blood plasma and liver was detected in 15 h after the last acizolum injections. Selen, calcium, copper and iron contents demonstrated a more complex behaviour. The obtained data suggest that prolonged acizolum administration has a significant impact on the bioelements content, and this should be taken into consideration when this zinc donator is used as a drug.

Background: Firefighters are characterized by constant interaction with smoke and various combustion products, which, entering the body can, affect the state of the respiratory system. Objective: To study the relationship of the bioelemental status with changes in the functional state of the lungs in firefighters of the Ministry of Emergency Situations of Russia. Results: The study revealed an increase in a number of toxic microelements in firefighters by 2-5 times compared with persons not participating in fire extinguishing, as well as a decrease in the content of essential microelements in the studied hair samples. The connection of toxic trace elements (aluminum, silver, cadmium) with a decrease in the diffusion capacity of the lungs, broncho-obstructive changes and pulmonary fibrosis was shown. The study showed the relationship between the accumulation of the level of silver, aluminum and cadmium with noticeable changes in the functional state of the lungs.

Since 2020, the world has been living in the COVID-19 pandemic caused by the SARS-CoV-2 virus. This situation is due to the high virulence and prevalence of the virus, which has reached epidemic proportions in recent years. Hemostasis disorders are the main marker and prognosis of the severe course of the disease. The virus in the body of a patient with COVID-19 triggers a pathophysiological chain reaction, which, in turn, will lead to the development of a cytokine storm, a disorder in the hemostasis system, and the development of multiple organ disorders. The purpose of the study: to determine and study the influence of various factors on the characteristics of hemostasis in patients with moderate and severe COVID-19. The object of the study were patients with moderate and severe forms of the disease. The following methods were used in the study: standard laboratory diagnostics and hair mineralogram. Results. Moderate and severe courses have clear laboratory markers, with a high probability of developing thrombotic complications, especially in conditions of deficiency of such minerals as zinc, selenium, iron, copper, bismuth, and aluminum, which have immunoregulatory, antioxidant, antiviral, and hemostatic properties, as well as reduce the risk of secondary infection. Conclusions. The results of the study suggest the importance of using minerals and emphasize the significance of using minerals in patients at the very beginning of the disease in order to strengthen the main physiological systems in case of laboratory-confirmed deficiency.

Introduction. Factors affecting the severity of the course of a new coronavirus infection remain unexplored to the endAim. To study the factors associated with the transition of COVID-19 from moderate to severe form of the disease in patients undergoing inpatient treatmentMaterials and methods. The diagnosis of COVID-19-associated pneumonia was made by a clinician on the basis of PCR test data and an up-to-date chest CT scan. A total of 195 consecutively recruited patients were examined. The average age of the surveyed was 54 (12.1) years.Results. Significantly more patients with severe coronavirus infection at the time of hospitalization were active tobacco smokers (33 (29.73%) vs 67 (79.6%); p < 0.002) and had a BMI consistent with pre-obesity/obesity (42 (37.84%) vs 44 (52.38%); p = 0.027). In patients with severe COVID-19, a significantly higher content of leukocytes was noted in the complete blood count (6.054 (2.813) vs 7.307 (4.707); p = 0.021). The groups also differed significantly in the content of micro- and macroelements. The imbalance of minerals revealed in our study is published for the first time, because. The study of the content of Al, B, Li, Co, Sr and Si in patients with COVID-19 was not carried out.Conclusion. The revealed changes in the microelement status require further study to confirm their significance in the development of a severe form of a new coronavirus infection in patients.

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