Background: In the last decades, a number of clinical studies have been conducted where both the positive and neutral effects of Se on thyroid autoimmunity have been demonstrated. Aims: The aim of our study was to assess the effects of selenmethionine among euthyroid patients with elevated TPO-Ab (TPO > 100 IU/ml) and patients with subclinical hypothyroidism and elevated TPO-Ab. Materials and methods: 40 euthyroid patients with elevated TPO-Ab and 11 patients with subclinical hypothyroidism plus elevated TPO-Ab were included in our study. Patients of both categories were randomized to recieve Se 200 μg/day or to the dynamic observation. TSH, f. T4, f. T3, AT-TPO were measured at baseline and every 3 months of follow-up. The volume and echogenicity of the thyroid were also evaluated every 3 month of follow-up period (12 month). Results: There were no significant difference between the groups on the dynamics of TSH, f. T3, f. T4, AT-TPO titers, volume and the echogenicity of the thyroid gland during the whole observational period among euthyroid patients with elevated TPO-Ab. Among the patients with subclinical hypothyroidism there were also no significant difference between the groups on the dynamics of f. T3, f. T4, AT-TPO titers, volume and the echogenicity of the thyroid gland during the whole observational period. But by the 12 month of the follow-up there were significantly more euthyroid patients in Se group compare to dynamic observation group. Conclusions: Our study, failed to show possitive effects of Se supplementation on thyroid autoimmunity.

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Objective: to evaluate the pharmacoeconomic feasibility of using monoclonal antibodies or their combinations vs standard therapy in patients with mild and moderate-severe COVID-19 in order to prevent the severe course of the disease.Material and methods. The decision tree and Markov models for calculation of costs and outcomes were used for patients with COVID-19 and post-COVID-19 syndrome, respectively. The cost-effectiveness of tixagevimab and cilgavimab was evaluated in persons ≥18 years old not vaccinated against COVID-19 with a high risk of progression to severe COVID-19. Effectiveness and safety of tixagevimab and cilgavimab combination was assessed based on TACKLE phase III study results. The quantities of life years gained (LYG) and quality-adjusted life years (QALY) were calculated. Results were compared with the wiliness-to-pay threshold measured as tripled gross domestic product per capita according the World Health Organization recommendations.Results. Treatment of COVID-19 with tixagevimab and cilgavimab results in additional 0.2657 LIGs or 0.2255 QALYs. The cost of 1 LIG was 213,4 thousand rubles, the cost of 1 QALY was 251,5 thousand rubles. Both costs of LIG and QALY appeared to be significantly less compared to the wiliness-to-pay threshold equal to 3.09 million rubles in 2022.Conclusion. Treatment of mild and moderate-severe COVID-19 is economically feasible and may be recommended for wide use in the Russian healthcare system.

Несмотря на противоречивые результаты недавно проведенных исследований селена (Se) при болезни Грейвса (БГ), адъювантная роль микроэлемента при данном заболевании продолжает исследоваться. Целью данной работы являлось изучение эффектов селенметионина в составе консервативной терапии БГ. Методы. В исследование были включены 28 пациенток в возрасте от 19 до 52 лет с впервые выявленной БГ легкого или среднетяжелого течения, которым планировалось проведение тиреостатической терапии в течение 12 мес. Пациентки были рандомизированы в две группы терапии: 1) тиреостатическая терапия + Se (200 мкг); 2) тиреостатическая терапия. Исходно и каждые 3 мес наблюдения оценивались показатели: ТТГ, св.Т4, св.Т3, АТ-ТПО и АТ-рТТГ, также проводилось УЗИ щитовидной железы (ЩЖ), оценивались объем и эхогенностьпаренхимы ЩЖ. Период наблюдения составил 18 мес (12 мес терапии, 6 мес наблюдения после отмены тиреостатической терапии, Se отменялся после 15 мес наблюдения). Результаты. В нашем исследовании не получено статистически значимых отличий между группами терапии БГ по скорости достижения эутиреоза, динамике показателей АТ-рТТГ и АТ-ТПО в течение всего периода наблюдения, частоте развития рецидива заболевания в течение 6 мес после отмены терапии. Выводы. Согласно данным нашего исследования, применение Se в фармакологических дозах (200 мкг в сутки) в рамках комплексной терапии БГ в течение 12 мес не приводило к статистически значимому эффекту в отношении клинических исходов БГ, а также не сопровождалось положительным “аутоиммунным” эффектом.