ObjectivesHeart involvement in multisystem inflammatory syndrome associated with COVID-19 in children (MIS-C) is a new challenging problem, requiring fast and reliable diagnostics and appropriate treatment. The aim of this study is to describe heart involvement in patients with MIS-C.Study DesignIn this retrospective, multicenter cohort study, data of 122 patients were included. All patients met WHO and CDC criteria of MIS-C.ResultsVarious types of heart involvement in MIS-C patients were observed. Patients with solely coronary artery lesions (CAL, n = 10, 8.2%) had typical features of Kawasaki disease: younger age, thrombocytosis and normal ferritin level, without giant CA aneurysms, thrombosis, myocardial infarction, shock, and ICU admission. Patients with solely myocardial involvement (MI, n = 30, 24.6%) had an older onset age, elevated ferritin, LDH, the highest D-dimer, H score, and thrombocytopenia level. The following clinical signs were associated with MI: gastrointestinal and central nervous system disorder, sore throat, swelling face, splenomegaly, shock, and treatment in the intensive care unit required. Patients with a combination of CAL and MI (n = 10, 8.2%) had symptoms similar to patients with solely MI, except for impressive thrombocytopenia. Shock and ICU admission were found in 34.7% of patients without heart involvement (n = 72, 59%). One major criterion [troponin > 32 pg/ml (52 points)] or at least two minor criteria [face swelling (32 points) and D-Dimer > 1,300 ng/ml (29 points)] were associated with MI (>32 points) with a sensitivity of 67.5% and a specificity of 88.9%.ConclusionThe above-suggested criteria can be added to routine diagnostic procedures to confirm MI in MIS-C patients.

Контактная информация:Вишнёва Елена Александровна, кандидат медицинских наук, заместитель директора НИИ педиатрии по научной работе, заведующая отделом стандартизации и клинической фармакологии, врач аллерголог-иммунолог отделения восстановительного лечения детей с аллергическими болезнями и заболеваниями органов дыхания НИИ педиатрии ННПЦЗД Адрес: 119991, Москва, Ломоносовский пр-т, д. 2, стр. 1, тел.: +7 (499) Ротавирусная инфекция (РВИ) -антропонозное высококонтагиозное острое инфекционное заболева-ние, характеризующееся преимущественным поражени-ем желудочно-кишечного тракта в виде гастроэнтерита с симптомами диареи и рвоты, развитием общей инток-сикации, дегидратации и нередко наличием респира-торного (катарального) синдрома в начальном периоде болезни. Вирион ротавируса имеет диаметр 65-75 нм и состоит из электронно-плотного центра (сердцевины) и двух белковых оболочек -внутреннего и наружного капсида [1]. Сердцевина содержит внутренние белки и фрагментированную цепь рибонуклеиновой кислоты (РНК), состоящую из 11 сегментов, которые кодируют продукцию белков -6 структурных (Viral Proteins, VP1-VP7: VP1, VP2, VP3, VP4, VP6, VP7) и 5 неструктур-ных (NSP1-NSP5). Основным компонентом внутреннего капсида является структурный белок VP6 (основная группоспецифическая антигенная детерминанта рота-вируса). В зависимости от его строения ротавирусы подразделяют на 7 серологических групп -A, B, C, D, E, F, G. Наружный капсид вириона образован двумя струк-турными белками, к которым в организме человека ХАРАКТЕРИСТИКА ВОЗБУДИТЕЛЯ

Rotavirus accounted for 31% of all AGE-related outpatient visits. The major rotavirus genotypes were G1P[8] and G4P[8]. Rotavirus gastroenteritis was associated with significantly more severe clinical symptoms than non-rotavirus gastroenteritis. The average costs of rotavirus cases for parents of children were elevated against the same indications for non-rotavirus. These findings underscore the need for a safe and effective rotavirus vaccine in Russia.

The formation of biobanks in the structure of scientific and treatment and diagnostic institutions with prospects for interregional integration is a fundamental link in monitoring and predicting diseases of various origins, creating and testing highly effective diagnostics, and developing novel therapeutic agents.Aim. To describe standard operating procedures and principles for the formation of bioresource collections (BRC) in medical institutions with biobanking.Material and methods. The data of scientific and practical biomedical projects using BRC obtained from patients with genetic, multifactorial and infectious diseases in St. Petersburg and Surgut are presented. As of September 2022, the BRC collected on the basis of the Pediatric Research and Clinical Center for Infectious Diseases of the Federal Medical and Biological Agency includes biosamples from 1619 patients, and the BRC collected in the Medical Institute of Surgut State University includes biosamples from 450 patients and healthy individuals of different sex and age. The selection of biosamples from apparently healthy individuals and patients with various diseases can serve as a strategically important resource for future research in terms of etiology, epidemiology, the development of regulatory environment and scales, innovations in the development of diagnostic approaches and treatment of the Russian population.

Since March 2020, the first reports have appeared about the increasing, almost everywhere, number of children who have undergone a new coronovirus infection caused by SARS-Cov-2 with a symptom complex resembling the manifestations of Kawasaki disease. A special feature of the clinical manifestations of this syndrome, which is called “Pediatric multisystem inflammatory syndrome associated with COVID-19”, is the high incidence of life-threatening conditions caused by the sharp development of arterial hypotension against the background of cardiogenic or vasogenic shock.In St. Petersburg, since the end of November 2020, there has been a sharp surge in admissions of children to the ICU of various hospitals with the clinic of Pediatric multisystem inflammatory syndrome, who have laboratory confirmation of the transferred COVID-19.The purpose of this article is to attract the attention of doctors of various profiles, to combine efforts to study this pathology, to determine the criteria for verifying the diagnosis, optimal treatment regimens and dispensary monitoring of patients who have been ill.