Thermosensitive injectable fibrillar gels based on cellulose nanocrystals grafted with poly(N-isopropylacrylamide) as biocompatible brain implants.

Drug treatment of glioblastoma, the most aggressive and widespread form of brain cancer, is complicated due to the difficulty of penetration of chemotherapeutic drugs through the blood-brain barrier (BBB). Moreover, with surgical removal of tumors, in 90 % of cases they reappear near the original focus. To solve this problem, we propose to use hydrogel based on cellulose nanocrystals grafted with poly(N-isopropylacrylamide) (CNC-g-PNIPAM) as a promising material for filling postoperative cavities in the brain with the release of antitumor drugs.

Current progress and challenges in the development of brain tissue models: How to grow up the changeable brain in vitro?

In vitro modeling of brain tissue is a promising but not yet resolved problem in modern neurobiology and neuropharmacology. Complexity of the brain structure and diversity of cell-to-cell communication in (patho)physiological conditions make this task almost unachievable. However, establishment of novel in vitro brain models would ultimately lead to better understanding of development-associated or experience-driven brain plasticity, designing efficient approaches to restore aberrant brain functioning.

A new look at the architecture and dynamics of the nerve net.

The nervous system is the paradigm of a 'simple nerve net'. Nerve cells in , as in many cnidarian polyps, are organized in a nerve net extending throughout the body column. This nerve net is required for control of spontaneous behavior: elimination of nerve cells leads to polyps that do not move and are incapable of capturing and ingesting prey (Campbell, 1976).

Development of myelination and axon diameter for fast and precise action potential conductance.

Axons of globular bushy cells in the cochlear nucleus convey hyper-accurate signals to the superior olivary complex, the initial site of binaural processing via comparably thick axons and the calyx of the Held synapse. Bushy cell fibers involved in hyper-accurate binaural processing of low-frequency sounds are known to have an unusual internode length-to-axon caliber ratio (L/d) correlating with higher conduction velocity and superior temporal precision of action potentials. How the L/d-ratio develops and what determines this unusual myelination pattern is unclear.

[The World Health Organization: Project of novels in the field of controlling international medical sanitary regulations].

The article considers draft of new edition of the International Health Regulations. The possible risks associated with changing of the document are evaluated from perspective of member countries, in whose territories occur or supposedly occur emergency situations in field of public health having international importance.

Corrigendum: Epidemiology of rare hereditary diseases in the European part of Russia: Point and cumulative prevalence.

[This corrects the article DOI: 10.3389/fgene.2021.

Effect of zinc and copper ions on cadmium-induced toxicity in rat cultured cortical neurons.

Background: Cadmium is a highly toxic heavy metal that is capable of accumulating in the body and causing neurodegeneration. However, the effect of other trace elements on Cd toxicity is currently poorly understood. The aim of this work was to study the effect of Zn and Cu ions on cadmium-induced death of neurons in the cerebral cortex.

[The development of health preservation technologies: from individual to family approach].

Unlabelled: The actuality of considered problem is in the fact that many medical social problems of preserving and improving population health can be resolved by the family and with its support. The purpose of the study is to substantiate scientifically priority of family approach in development of National health preservation system in actual conditions.

Materials And Methods: The national and foreign electronic databases were investigated to find publications concerning transformation of matrimonial relations, effect of family on health and need in health preservation technologies at each stage of its development.

Epidemiology of Rare Hereditary Diseases in the European Part of Russia: Point and Cumulative Prevalence.

The issue of point prevalence, cumulative prevalence (CP), and burden of rare hereditary diseases (RHD), comprising 72-80% of the group of rare diseases, is discussed in many reports and is an urgent problem, which is associated with the rapid progress of genetic technology, the identification of thousands of genes, and the resulting problems in society. This work provides an epidemiological analysis of the groups of the most common RHDs (autosomal dominant, autosomal recessive, and X-linked) and their point prevalence (PP) and describes the structure of RHD diversity by medical areas in 14 spatially remote populations of the European part of Russia. The total size of the examined population is about 4 million.

[DENTAL CARE FOR MOSCOW REGION CITIZENS IN THE CONDITIONS OF THE COVID-19 PANDEMIC (APRIL-JUNE 2020)].

It is known that the oral cavity is an epidemiological hazard due to the high level of viral and bacterial contamination. Despite the narrow specialization and distant connection with the problem of viral pneumonia, dentists, nevertheless, are at risk of contracting the new coronavirus infection COVID-19. To reduce the epidemiological activity the provision of routine dental care was suspended in the vast majority of regions of the Russian Federation including the Moscow region, from the end of March 2020 to June 20, 2020.

Spectrum of kinetic plasma turbulence at 0.3-0.9 astronomical units from the Sun.

We investigate spectral properties of turbulence in the solar wind that is a weakly collisional astrophysical plasma, accessible to in situ observations. Using the Helios search coil magnetometer measurements in the fast solar wind, in the inner heliosphere, we focus on properties of the turbulent magnetic fluctuations at scales smaller than the ion characteristic scales, the so-called kinetic plasma turbulence. At such small scales, we show that magnetic power spectra between 0.

[Actual problems of planning the number of posts of otorhinolaryngologists].

The article presents comparisons of planned and normative and actual data on medical care in otorhinolaryngology, analysis of the normative number of otorhinolaryngologists according to the current orders of the Ministry of Health of Russia. It is concluded that it is necessary to amend modern regulatory documents.

[Clinical and economical aspects of a social support program for the free making and repair dentures in the territory of the Moscow region for 2016-2018].

The Government of the Moscow Region has approved more than 120 different social support measures for residents of the Moscow Region. Their aim is to help disadvantaged groups. The social support program of making and repair dentures for Moscow region residents provides preservation of dental health and restoration of masticatory effectiveness.

[Methods for quality of life assessment in children with orphanic diseases].

Orphan (rare) diseases include congenital or acquired diseases, the frequency of occurrence of which does not exceed a certain number established by the laws of various countries. Despite its rarity, the orphan diseases make a significant contribution to the structure of population disability and most of them have no specific treatment. One of the main clinical challenges in these patients is to ensure their high quality of life (QOL).

[The dynamics of primary and common morbidity of population older than able-bodied age].

The purpose of the study is to analyze dynamic of primary and general morbidity of population older than able-bodied age in Moscow Oblast, including data comparing in the Central Federal Okrug and the Russian Federation. The data of statistical reports of City of Moscow, the Central Federal Okrug and the Russian Federation in 2013-2018 was included in analysis. The common analytical and mathematical statistical methods were applied.

The Delayed Neuroprotective Effect of Methylene Blue in Experimental Rat Brain Trauma.

After traumatic brain injury (TBI), an increase in dysfunction of the limbs contralateral to injury focus was observed. Using different behavioral tests, we found that a single intravenous injection of methylene blue (MB, 1 mg/kg) 30 min after the injury reduced the impairment of the motor functions of the limbs from 7 to 120 days after TBI. Administration of methylene blue 30 min after the injury and then monthly (six injections in total) was the most effective both in terms of preservation of limb function and duration of therapeutic action.

The single intravenous administration of methylene blue after traumatic brain injury diminishes neurological deficit, blood-brain barrier disruption and decrease in the expression of S100 protein in rats.

The protective effect of methylene blue (MB) was investigated on the model of focal one-sided traumatic brain injury (TBI) of the sensorimotor cortex region from 1 to 7 days after the injury. TBI caused a reliable disruption of the functions of the limbs contralateral to injury focus, an increase in the expression of S100 protein and blood-brain barrier (BBB) permeability in the ipsilateral hemisphere. The single intravenous injection of MB (1 mg/kg body weight) 30 min after TBI significantly reduced the limb function impairment as well as a TBI-induced increase in the expression of inflammatory marker S100 protein, and BBB permeability.

[The role of actual demographic trends in improving state health policy].

The decreasing of demographic security level is a global social economic trend in both developed and developing economies. Hence there is an urgent need in improving state social policy, including health care. The key target of this study is to evaluate the role of modern demographic trends in improving state social economic policy in health care.

Epidemiology of Hereditary Diseases in the Karachay-Cherkess Republic.

Prevalence and allelic heterogeneity of hereditary diseases (HDs) could vary significantly in different human populations. Current knowledge of HDs distribution in populations is generally limited to either European data or analyses of isolated populations which were performed several decades ago. Thus, an acknowledgement of the HDs prevalence in different modern open populations is important.

Urocortin 3 signalling in the auditory brainstem aids recovery of hearing after reversible noise-induced threshold shift.

Key Points: Ongoing, moderate noise exposure does not instantly damage the auditory system but may cause lasting deficits, such as elevated thresholds and accelerated ageing of the auditory system. The neuromodulatory peptide urocortin-3 (UCN3) is involved in the body's recovery from a stress response, and is also expressed in the cochlea and the auditory brainstem. Lack of UCN3 facilitates age-induced hearing loss and causes permanently elevated auditory thresholds following a single 2 h noise exposure at moderate intensities.

Local approach to the study of energy transfers in incompressible magnetohydrodynamic turbulence.

We present a local approach to the study of scale-to-scale energy transfers in magnetohydrodynamic (MHD) turbulence. This approach is based on performing local averages of the physical fields, which amounts to filtering scales smaller than some parameter ℓ. A key step in this work is the derivation of a local Kármán-Howarth-Monin relation which provides a local form of Politano and Pouquet's 4/3 law, without any assumption of homogeneity or isotropy.

Slow NMDA-Mediated Excitation Accelerates Offset-Response Latencies Generated via a Post-Inhibitory Rebound Mechanism.

In neural circuits, action potentials (spikes) are conventionally caused by excitatory inputs whereas inhibitory inputs reduce or modulate neuronal excitability. We previously showed that neurons in the superior paraolivary nucleus (SPN) require solely synaptic inhibition to generate their hallmark offset response, a burst of spikes at the end of a sound stimulus, via a post-inhibitory rebound mechanism. In addition SPN neurons receive excitatory inputs, but their functional significance is not yet known.

The single intravenous administration of mitochondria-targeted antioxidant SkQR1 after traumatic brain injury attenuates neurological deficit in rats.

The protective effect of SkQR1, a mitochondria-targeted antioxidant, was investigated on the model of focal one-sided traumatic brain injury (TBI) of the sensorimotor cortex region from 1 to 7 days after the injury. TBI caused a reliable disruption of the functions of the limbs contralateral to injury focus. The intravenous single injection of SkQR1 (250 nmol/kg) but not C12R1 (a SkQR1 homologue devoid of the antioxidant group) 30 min after TBI reduced the impairment of the motor functions of the limbs.

[The Attitude of Physicians of Donor Bases to Problems of Transplantation of Human Organs and Tissues].

The article considers social aspects of transplantology on the basis of analysis of data of questionnaire survey of 266 physicians of donor bases of the Federal Center implementing transplantation of human organs and tissues. The respondents were representatives of the most prevalent medical professions and ll age gender groups. According to study results, physicians are aware of importance of development of organs and tissues transplantation in the region though take a very passive standing related to informing transplantation specialists about availability of a potential donor.