Child and mobile phone: tips for parents

A guidance for parents is provided on the organization for a child a mobile phone useПриводятся рекомендации родителям по организации для ребенка пользования мобильным телефоно

Сонографические показатели диафрагмы и их корреляции со спирометрическими данными у здоровых лиц: проспективное клиническое исследование

ЦЕЛЬ ИССЛЕДОВАНИЯ: Выявить корреляционные взаимосвязи сонографических показателей функционирования диафрагмы со спирометрическими данными у здоровых лиц. МАТЕРИАЛЫ И МЕТОДЫ: На базе ФГБУ «НМИЦ им. В.А. Алмазова» у 50 здоровых добровольцев (женщин — 30) оценили структурное (толщину) и функциональное (индекс утолщения и экскурсию) состояние диафрагмы с помощью ультразвукового исследования, а также спирометрические характеристики аппарата внешнего дыхания с помощью аппарата искусственной вентиляции легких. После чего провели статистическую обработку и корреляционный анализ. РЕЗУЛЬТАТЫ: Толщину диафрагмы (слева и справа) и ее экскурсию (справа) удалось оценить у всех испытуемых; экскурсию диафрагмы слева — только у 20 % испытуемых. Спирометрию выполнили у всех испытуемых. Полученные данные согласуются с литературными. В частности, ультразвуковые и спирометрические показатели для здоровых лиц находились в рамках референтных значений. Сила инспираторных мышц также оказалась сопоставимой с литературными данными. Корреляционный анализ не выявил статистически значимых взаимосвязей между изученными ультразвуковыми и спирометрическими параметрами. Также не было выявлено взаимосвязи между возрастом и ультразвуковыми показателями диафрагмы. Найдены слабые статистически значимые связи между структурно-функциональным состоянием диафрагмы и антропометрическими характеристиками обследованных: массой тела и индексом массы тела. ВЫВОДЫ: Ультразвуковые показатели работы диафрагмы не коррелируют или плохо коррелируют со спирометрическими. У здоровых лиц нет оснований использовать ультразвуковое исследование диафрагмы, так как оно практически не дает дополнительной информации о состоянии аппарата внешнего дыхания

Types of hemodynamic response to orthostasis according to continuous blood pressure monitoring: a case series of heart failure with reduced ejection fraction

Heart failure (HF) is associated with unfavorable outcomes and high health care costs. Determination of the hemodynamic response to orthostasis can be an additional tool in assessing the stability and compensation of HF patients. Active orthostatic test (AOT) with blood pressure monitoring serves as a simple and available screening method. However, a complete characteristic of the hemodynamic response, especially during the first minute of orthostasis, can be obtained only with continuous blood pressure monitoring. The presented case series demonstrate the types of hemodynamic response in patients with heart failure with reduced ejection fraction in AOT with continuous blood pressure monitoring, available data on the mechanisms of its development, clinical and prognostic role, and also presents the advantages and limitations of AOT

Frequency of hemodynamic response to orthostatic stress in heart failure with reduced ejection fraction, associations with clinical blood pressure

Aim. To assess hemodynamic response to active standing test (AST) with beat-to-beat blood pressure (BP) monitoring, their association with office BP and symptoms of orthostatic intolerance in patients with heart failure (HF).Material and methods. Outpatient HF patients with documented  left ventricular ejection  fraction <40%, followed   up in a HF center  and receiving optimal medical therapy, underwent AST with beat-to-beat  non-invasive BP monitoring.Hemodynamic response was assessed according to the European Federation of Autonomic Societies criteria.Results. The study included 87 patients (mean age, 57±10 years; men, 76%). Normal hemodynamic response to orthostatic stress was observed  in 36 (41,4%) patients. Pathological response prevailed during the first minute of orthostatic stress — initial orthostatic hypotension (OH) (n=29, 33,3%) and delayed BP recovery (n=18, 20,7%).  Classical OH was detected  in 4 (4,6%)  patients. There was no orthostatic hypertension, defined as an increase in systolic BP (SBP) ≥20 mm Hg. According to office BP, hypotension was observed in 19 (21,8%) patients (SBP <90 mm Hg in 4 patients and 90-100 mm Hg in 15), hypertension (SBP >140 mm Hg) in 11 (12,6%) patients. Pathological response to orthostatic stress were more often observed  in office  SBP >140 mm Hg compared  to SBP ≤140 mmHg (90,9% and 53,9%, p=0,020).Orthostatic intolerance was noted in 43 (49,4%) patients and were not associated with the level of office SBP (p=0,398) or pathological responses to orthostatic stress (p=0,758 for initial OH and p=0,248  for delayed  BP recovery).Conclusion. The pathological hemodynamic response in AST with beat-to-beat BP monitoring in ambulatory patients with HF is most often represented  by initial OH and delayed BP recovery associated  with office SBP >140 mmHg. The frequency of symptoms of orthostatic intolerance did not differ between groups depending on the presence of an inadequate response to orthostatic stress

Ancient genomic time transect from the Central Asian Steppe unravels the history of the Scythians

The Scythians were a multitude of horse-warrior nomad cultures dwelling in the Eurasian steppe during the first millennium BCE. Because of the lack of first-hand written records, little is known about the origins and relations among the different cultures. To address these questions, we produced genome-wide data for 111 ancient individuals retrieved from 39 archaeological sites from the first millennia BCE and CE across the Central Asian Steppe. We uncovered major admixture events in the Late Bronze Age forming the genetic substratum for two main Iron Age gene-pools emerging around the Altai and the Urals respectively. Their demise was mirrored by new genetic turnovers, linked to the spread of the eastern nomad empires in the first centuries CE. Compared to the high genetic heterogeneity of the past, the homogenization of the present-day Kazakhs gene pool is notable, likely a result of 400 years of strict exogamous social rules.Introduction Results - The IA transition in the Kazakh Steppe - Admixture modeling of IA steppe populations - Post-IA genetic turnovers in the Kazakh Steppe - Dating ancient admixture - Present-day Kazakhs Discussion Material and methods - Radiocarbon dating - DNA extraction, library preparations, and sequencing - Modern DNA genotyping and quality controls - Ancient DNA data processing -- Raw data -- Authentication and contamination estimate -- Genotyping -- Sex determination -- Genetic relatedness estimation - Uniparental haplogroup assignment - Population structure analyses - Individual labeling and population grouping criteria - F-statistics and ancestry modeling - Admixture dating - CHROMOPAINTER and fineSTRUCTURE analyse

ДОСВІД ВИЗНАЧЕННЯ ІНТРАТЕКАЛЬНОГО СИНТЕЗУ АНТИТІЛ У ПАЦІЄНТІВ З УРАЖЕННЯМИ ЦЕНТРАЛЬНОЇ НЕРВОВОЇ СИСТЕМИ

The aim of the work – to study the frequency of intrathecal synthesis of specific antibodies at patients with inflammatory lesions of the central nervous system.Patients and methods. In this work the data of the determination of intrathecal synthesis of specific antibodies (ITSA) in 90 patients are given who were treated at the Lev Hromashevskyi Institute of Epidemiology and Infectious Diseases. The research included quantitative definition of antibodies of the class IgG in serum (S) and cerebrospinal fluid (CSF) to neurotropic pathogens: herpes simplex virus 1/2, cytomegalovirus, Epstein-Barr virus, varicella zoster virus, rubella virus, Borrelies. Calculations of ITSA indicators were carried out according to the method of Reiber H. The condition of a hematoencephalic barrier (HEB) was estimated by means of coefficient of albumine (Qalb) taking into account age norms.Results. ITSA was established in (25.6±4.6) % of the examined patients with damages of the central nervous system. In patients with ITSA most often (in 52.2 %) simultaneously present antibodies to several neurotropic pathogens. Detection of ITSA at the examined patients didn’t depend on concentration of specific antibodies in S and CSF and wasn’t followed by malfunction of HEB. The incidence of HEB dysfunction at patients with ITSA and without ITSA appeared with an identical frequency (13,0 % and 13,6 % respectively).Мета роботи. Вивчити частоту інтратекального синтезу специфічних антитіл у пацієнтів зі запальними ураженнями центральної нервової системи.Пацієнти і методи. В роботі наведені дані визначення інтратекального синтезу специфічних антитіл (ІТСА) у 90 пацієнтів, які проходили лікування в клініці ДУ «Інститут епідеміології та інфекційних хвороб ім. Л.В. Громашевського». Дослідження включало кількісне визначення антитіл класу Ig G в сироватці крові (СК) та спинномозковій рідині (СМР) до нейротропних збудників: вірусу простого герпесу 1/2 типу, цитомегаловірусу, вірусу Епштейна-Барр, вірусу оперізувального лишаю, вірусу кору, вірусу краснухи, бореліям. Розрахунки показників ІТСА проведені за методикою Reiber H. Стан гематоенцефалічного бар’єру (ГЕБ) оцінювали за допомогою коефіцієнту альбуміну (Qalb) з урахуванням вікових норм.Результати. ІТСА встановлений у (25,6±4,6) % обстежених пацієнтів з ураженнями ЦНС. У пацієнтів з ІТСА найчастіше (у 52,2 %) одночасно були присутні антитіла до декількох нейротропних збудників. Виявлення ІТСА в обстежених пацієнтів не залежало від концентрації специфічних антитіл у СК і СМР і не супроводжувалося порушенням функції ГЕБ. Випадки дисфункції ГЕБ у пацієнтів з ІТСА та без ІТСА виявлялися з однаковою частотою (13,0 та 13,6 % відповідно)

Diet and subsistence in Bronze Age pastoral communities from the southern Russian steppes and the North Caucasus

The flanks of the Caucasus Mountains and the steppe landscape to their north offered highly productive grasslands for Bronze Age herders and their flocks of sheep, goat, and cattle. While the archaeological evidence points to a largely pastoral lifestyle, knowledge regarding the general composition of human diets and their variation across landscapes and during the different phases of the Bronze Age is still restricted. Human and animal skeletal remains from the burial mounds that dominate the archaeological landscape and their stable isotope compositions are major sources of dietary information. Here, we present stable carbon and nitrogen isotope data of bone collagen of 105 human and 50 animal individuals from the 5th millennium BC to the Sarmatian period, with a strong focus on the Bronze Age and its cultural units including Maykop, Yamnaya, Novotitorovskaya, North Caucasian, Catacomb, post-Catacomb and late Bronze Age groups. The samples comprise all inhumations with sufficient bone preservation from five burial mound sites and a flat grave cemetery as well as subsamples from three further sites. They represent the Caucasus Mountains in the south, the piedmont zone and Kuban steppe with humid steppe and forest vegetation to its north, and more arid regions in the Caspian steppe. The stable isotope compositions of the bone collagen of humans and animals varied across the study area and reflect regional diversity in environmental conditions and diets. The data agree with meat, milk, and/or dairy products from domesticated herbivores, especially from sheep and goats having contributed substantially to human diets, as it is common for a largely pastoral economy. This observation is also in correspondence with the faunal remains observed in the graves and offerings of animals in the mound shells. In addition, foodstuffs with elevated carbon and nitrogen isotope values, such as meat of unweaned animals, fish, or plants, also contributed to human diets, especially among communities living in the more arid landscapes. The regional distinction of the animal and human data with few outliers points to mobility radii that were largely concentrated within the environmental zones in which the respective sites are located. In general, dietary variation among the cultural entities as well as regarding age, sex and archaeologically indicated social status is only weakly reflected. There is, however, some indication for a dietary shift during the Early Bronze Age Maykop period

Mycobacterium leprae diversity and population dynamics in medieval Europe from novel ancient genomes

Hansen’s disease (leprosy), widespread in medieval Europe, is today mainly prevalent in tropical and subtropical regions with around 200,000 new cases reported annually. Despite its long history and appearance in historical records, its origins and past dissemination patterns are still widely unknown. Applying ancient DNA approaches to its major causative agent, Mycobacterium leprae, can significantly improve our understanding of the disease’s complex history. Previous studies have identified a high genetic continuity of the pathogen over the last 1500 years and the existence of at least four M. leprae lineages in some parts of Europe since the Early Medieval period

ЭЛЕКТРОЭНЦЕФАЛОГРАММА, ИМИТИРУЮЩАЯ УМИРАНИЕ ГОЛОВНОГО МОЗГА, ПРИ ОСТРОМ ОТРАВЛЕНИИ БАКЛОФЕНОМ

We report a case of acute baclofen poisoning in a 23-year-old female patient, who committed suicide, which led to the development of a deep coma. The electroencephalogram on the first day recorded the phenomenon of “burst suppression”, which was seen as a sign of a dying brain. Subsequent studies have shown positive changes of the electroencephalogram and regression of neurological symptoms. Thus, the phenomenon of “burst suppression” in the depression of consciousness to deep coma and given adequate treatment, can be reversible.Описывается случай острого отравления баклофеном с суицидальной целью пациентки 23 лет, приведшего к развитию глубокой комы. На электроэнцефалограмме при этом в 1-е сутки регистрировался феномен «вспышка–подавление», который рассматривается как признак умирания головного мозга. При последующих исследованиях показана положительная динамика изменений электроэнцефалограммы; также отмечался регресс неврологической симптоматики. Таким образом, регистрируемый в электроэнцефалограмме феномен «вспышка–подавление» при угнетении уровня бодрствования до глубокой комы с учетом адекватной терапии может иметь обратимый характер

The MPIfR-MeerKAT Galactic Plane Survey - I. System set-up and early results

Galactic plane radio surveys play a key role in improving our understanding of a wide range of astrophysical phenomena. Performing such a survey using the latest interferometric telescopes produces large data rates necessitating a shift towards fully or quasi-real-time data analysis with data being stored for only the time required to process them. We present here the overview and set-up for the 3000-h Max-Planck-Institut für Radioastronomie (MPIfR)-MeerKAT Galactic Plane Survey (MMGPS). The survey is unique by operating in a commensal mode, addressing key science objectives of the survey including the discovery of new pulsars and transients and studies of Galactic magnetism, the interstellar medium and star formation rates. We explain the strategy coupled with the necessary hardware and software infrastructure needed for data reduction in the imaging, spectral, and time domains. We have so far discovered 78 new pulsars including 17 confirmed binary systems of which two are potential double neutron star systems. We have also developed an imaging pipeline sensitive to the order of a few tens of micro-Jansky () with a spatial resolution of a few arcseconds. Further science operations with an in-house built S-band receiver operating between 1.7 and 3.5 GHz are about to commence. Early spectral line commissioning observations conducted at S-band, targeting transitions of the key molecular gas tracer CH at 3.3 GHz already illustrate the spectroscopic capabilities of this instrument. These results lay a strong foundation for future surveys with telescopes like the Square Kilometre Array (SKA)