[COMPREHENSIVE ASSESSMENT OF THE SPECIES COMPOSITION AND SENSITIVITY OF MICROFLORA IN PATIENTS WITH ODONTOGENIC MAXILLARY SINUSITIS].

Objective - to study the species composition of microflora and its sensitivity in patients with odontogenic maxillary sinusitis. The study included 230 patients of both sexes aged 18 to 70 years, who were treated at the Moscow Regional Scientifics Research and Clinical Institute named after M. F. Vladimirsky with a diagnosis of Odontogenic maxillary sinusitis. Of these, there were 155 patients with odontogenic sinusitis, complicated by perforation of the maxillary sinus and the presence of an oro-antral fistula, and 75 patients with maxillary aspergillosis. All patients underwent microbiological examination of smears and flushes from the maxillary sinus cavity with the determination of the species composition and antibiotic sensitivity. In the majority of the patients with perforative forms of odontogenic maxillary sinusitis, coccal flora (streptococci and various species) was detected, in a smaller number compared to it - facultative and obligate anaerobes, pathogenic fungi (Candida). A comparative analysis of the microflora, depending on the duration of the maxillary sinus perforation, showed that the rhinogenic microorganisms (Moraxella spp.) were found only in intraoperative perforations (up to 20% of cases). The presence of obligate anaerobes (Fusobacterium spp. Bacteroides spp.) was typical for long-existing perforations. In patients with maxillary aspergillosis facultative and obligate anaerobes were found less frequently and in a smaller variety than in patients with perforative maxillary sinusitis. There were no cases of sinus contamination by pathogenic fungi of the genus Candida in this group. At the same time, rhinogenic microgranisms (Moraxella spp.) were detected with a higher frequency (up to 27.3%) in this group of patients.

[The modern methods of evaluation of implementing personalized programs of prevention of age-associated diseases].

The development of preventive programs targeting specific groups of consumers of medical social services having age-related health and lifestyle characteristics is one of the most prospective methods to improve quality of medical care of the elderly and senile patients. The previously developed by Russian and foreign scientists programs of personalized prevention of age-related diseases make it possible to organize target groups of patients seeking medical services in both state and private health care organizations to be screened for conditions of medical and social significance from the point of view of preventive medicine. This permits to achieve a real integration of various components of preventive care that improves health of elderly and senile patients in terms of morphofunctional indices of patient's physical status, quality of life, degree of independence, and, as a result, quality and scope of implementation of preventive programs for elderly population. Therefore, the development of the basics of personalized programs preventing age-related diseases in elderly population is actual.

[Detection of markers of hepatitis B and D virus infection in biological media and dried blood spots.]

The aim of this study was to assess the rates of detection of the major markers of infection with hepatitis B and Delta (D) viruses in serum, saliva and dry blood dots (DBS) as a possible option for serological studies among the population of the endemic region in conditions of limited laboratory resources. For this purpose, paired samples of blood serum and DBS, blood serum and saliva from patients with chronic hepatitis B with Delta agent living in the Republic of Tyva, which is endemic for this disease. HBsAg was detected in 289 (100%) serum samples, in 88/92 (95.7%) saliva samples, in 60/80 (75%) DBS samples, stored three years at room temperature, and in 111/117 (94.9%) DBS stored one year at the same conditions. Anti-HBcore was detected in 209 (100%) serum samples, while in saliva and DBS samples this marker was detected in only 13.04% (12/92) and 19.7% (23/117), respectively. Anti-HDV antibodies in serum were detected in 209 (100%) samples collected from patients in 2017-2018. In saliva and DBS anti-HDV were not detected in any sample. This difference in the detection rates of anti-HBcore and anti-HDV might be accounted for the fact that the HBV core protein is a very strong immunogen, indusing the production of anti-HBcore in high concentrations. Probably, the concentration of anti-HDV is much lower, which explains its absence in saliva and DBS in patients with hepatitis B+D. Samples of biological media (saliva), as well as DBS can serve as an alternative material for the detection of HBsAg in screening and research prevalence studies. Meanwhile, the definition of anti-HDV in such media is not possible due to the false negative results. Due to the high probability of superinfection with HDV in patients with HBV in endemic areas, the detection of HBsAg in alternative media (saliva or DBS) should be followed by testing for anti-HDV in serum samples.

Mapping autosomal recessive intellectual disability: combined microarray and exome sequencing identifies 26 novel candidate genes in 192 consanguineous families.

Approximately 1% of the global population is affected by intellectual disability (ID), and the majority receive no molecular diagnosis. Previous studies have indicated high levels of genetic heterogeneity, with estimates of more than 2500 autosomal ID genes, the majority of which are autosomal recessive (AR). Here, we combined microarray genotyping, homozygosity-by-descent (HBD) mapping, copy number variation (CNV) analysis, and whole exome sequencing (WES) to identify disease genes/mutations in 192 multiplex Pakistani and Iranian consanguineous families with non-syndromic ID. We identified definite or candidate mutations (or CNVs) in 51% of families in 72 different genes, including 26 not previously reported for ARID. The new ARID genes include nine with loss-of-function mutations (ABI2, MAPK8, MPDZ, PIDD1, SLAIN1, TBC1D23, TRAPPC6B, UBA7 and USP44), and missense mutations include the first reports of variants in BDNF or TET1 associated with ID. The genes identified also showed overlap with de novo gene sets for other neuropsychiatric disorders. Transcriptional studies showed prominent expression in the prenatal brain. The high yield of AR mutations for ID indicated that this approach has excellent clinical potential and should inform clinical diagnostics, including clinical whole exome and genome sequencing, for populations in which consanguinity is common. As with other AR disorders, the relevance will also apply to outbred populations.

Molecular Heterogeneity of Lectins in Wheat Seedlings under the Action of Stevioside and Heavy Metals.

The effect of the diterpene glycoside stevioside and high concentrations of heavy metals on the molecular heterogeneity of lectins was studied in seedlings of Kazanskaya 560 winter wheat cultivar. Stevioside induced the emergence of a new 45-kDa lectin. Cultivation of wheat seedlings in CdSO4 and ZnSO4 solutions resulted in the emergence of the protein with Mr = 88 kDa. We detected the presence of both lectins in seedlings during combined treatment with stevioside and heavy metals.

A new approach to improving the accuracy of elemental analysis in laser mass spectrometry.

It is shown that the main reason affecting the accuracy and reproducibility of the elemental analysis of solids with a laser source of ions is the difference in the ionization cross sections of different elements in the generation of laser plasma. Computer modeling was carried out for the evaporation of the sample and generation of laser plasma at different values of laser power density. The aim of modelling was to determine the cause of the low accuracy of analysis by direct selection of ions from the plasma. The researches have shown that we cannot get satisfactory accuracy of analysis using analytical signal formed only on the base of single-charged ions. At the same time, in the formation of an analytical signal, as a sum of the intensities of the mass peaks of all charges of each element, the accuracy of the analysis does not depend either on the ionization cross section or on the nonreproducibility of the laser radiation power. It is shown that this approach completely eliminates the "matrix effect."

Rapid diagnostics of urinary iodine using a portable EDXRF spectrometer.

A method for urinary iodine diagnostics using a portable energy-dispersion X-ray fluorescent (EDXRF) spectrometer is proposed. The principle of the method consists in excitation of the sample atoms fluorescence by the energy spectrum intentionally formed from the spectrum of an X-ray tube using an optimized X-ray scheme. The optimization by the criterion of the minimum detection limit for L-series iodine fluorescence lines included the calculation of optimal atomic numbers for materials of a re-radiator and a filter, and their thicknesses, the collimation system parameters, and an X-ray tube voltage. Experimentally achieved detection limits were 45 and 75 µg/L by I-Lα and I-Lß lines, respectively, at the theoretically extreme value 30 µg/L. This sensitivity is found to be sufficient for urinary iodine diagnostics in the range from 50 to 200 µg/L. The results obtained from different patients have shown the satisfactory convergence for the iodine concentration determination by Lα and I-Lß fluorescence lines. The simple sample preparation procedure and comparably small sizes of the apparatus allows rapid researches directly in clinical settings.

Dependence between LD50 for Rodents and LC50 for Adult Fish and Fish Embryos.

We revealed empirical dependences between common logarithm of a ratio of rat oral LD50 to LCa50 for adult fish and lgP for 50 different chemicals; and common logarithm of a ratio of the oral LD50 in rodents to LCe50 for fish embryos and lgP for 30 different chemicals. The dependences were obtained by constructing a trend line between experimental points and calculation of Pearson's R correlation coefficient as a measure of regression significance. These dependences can show the influence of substance lipophilicity on its toxicity for aquatic organisms comparing to mammals.

Correlation between LC50 for Adult Fish and Fish Embryos.

Testing for substance toxicity for living organisms is an important step in the development and adaptation of new drugs for various purposes. Analysis of the dependences between toxicological parameters of chemical substances for various test objects and physicochemical properties of these agents is a promising trend. Partition coefficient logP (logKow) was chosen as the key physicochemical parameter determining the toxicological parameters of the same substance for hydrobionts at different developmental stages. We found a correlation between decimal logarithm of the ratio of LCe50 for fish embryos to LCa50 for adult fish and logP. This dependence was found as a liner combination of equations obtained by drawing a trend line between experimental points and calculation of Pearson's correlation coefficient R.

[The detection of antibodies to endogenous bioregulators for evaluating functional condition of health of portsmen.]

The evaluation of functional condition of health of sportsmen doing Greek Roman wrestling was implemented using detection of level of antibodies to serotonin, histamine, dopamine, glutamate, GABA, orphanine, endorphin, angiotensin. The study established a reliable increasing of level of antibodies to orphanine, ß-endorphin, GABA and glutamate under increasing of duration of physical load. The content of antibodies to other regulators of adaptation had no statistical difference. The developed technique can be applied in evaluation of objectification of functional condition of sportsman with purpose of selecting optimal training process.

Biallelic truncating SCN9A mutation identified in four families with congenital insensitivity to pain from Pakistan.

(a) Homozygosity-mapping-by-descent of four Bhakkar congenital indifference/insensitivity to pain (CIP) families. (b) Identification of mutation Met1190* in SCN9A. (c) SCN9A/NaV1.7 2D structure (as predicted by CCTOP and SMART) and approximate position of known nonsense (*) and missense (M) mutations ( www.hgmd.cf.ac.uk), as well as the Bhakkar mutation (this study) in red.

[PERSONALIZATION OF TREATMENT FOR CERVICAL CANCER DURING PREGNANCY].

The paper presents a clinical case of a patient of 29 years old with a diagnosis of cervical cancer sIIA1 stage with the modern therapeutic approach: as a diagnostic and treatment phase there was performed videoendoscopic pelvic lymph node dissection at a 16-week pregnancy, excluded lymphogenous spread of tumor and on the basis of which it was decided to prolong pregnancy, given the strong desire of the patient to keep the baby. At a 19-week and a 23-week pregnancy there were two courses of neoadjuvant chemotherapy and at a 34-week--Cesarean delivery with simultaneous radical hysterectomy and ovarian transposition followed by a course of adjuvant distant radiotherapy. The final diagnosis was as pT2aN0M0. The observation was during 7 months: the patient is alive without recurrence, the child develops without physical and psychomotor abnormalities.

[Features of morbidity community-acquired pneumonia among young recruits].

Were examined 3338 military personnel of the combined training center. 183 of them diagnosed community-acquired pneumonia, in 3155 focal and infiltrative changes in lung tissue were not identified. The analisys of prevalence been made among young recruits of the acute respiratory illness before arriving in part and at the assembly point, foci of chronic infection, smoking, low body weight. 511 military personnel arrived at the training center in the disease state with symptoms of acute respiratory illness. Examined the relationship these risk factor to the development of community-acquired pneumonia in this category of servicemen.

X-ray absorption near-edge structure anomalous behaviour in structures with buried layers containing silicon nanocrystals.

Substructure and phase composition of silicon suboxide films containing silicon nanocrystals and implanted with carbon have been investigated by means of the X-ray absorption near-edge structure technique with the use of synchrotron radiation. It is shown that formation of silicon nanocrystals in the films' depth (more than 60 nm) and their following transformation into silicon carbide nanocrystals leads to abnormal behaviour of the X-ray absorption spectra in the elementary silicon absorption-edge energy region (100-104 eV) or in the silicon oxide absorption-edge energy region (104-110 eV). This abnormal behaviour is connected to X-ray elastic backscattering on silicon or silicon carbide nanocrystals located in the silicon oxide films depth.

[On motivations of adolescents to promote a healthy lifestyle].

There was studied the motivation of modern adolescents to promote healthy lifestyle. There were observed two arrays, including adolescent-schoolchildren aged 16-17 and 13-14 years in Moscow. The results showed that health occupied one of the first places among the positive motivations, being stable dominant in the period of 13-17 years. The real motivation for a healthy lifestyle coincides with the perspective and informed choice coincides with the life goals. In this, almost all of the identified negative motivation are "manageable", available to be modified or eliminated.

[Role of children physical development in radiation hygienic monitoring system].

The article deals with longstanding work on studies of physical development parameters among preschoolers aged 4-7 and dwelling on territories near to objects with potential radiation danger, also on radiation-connected anxiety in parents of the examined children. The stated objects when exploited in normal mode were proved to cause no influence on the children's development. Social and economical factors appeared to play leading role in developmental parameters formation. Increased level of radiation-connected anxiety in parents of the children examined appeared to be out of proportion to real favorable radiation background of the territories examined.

[Effect of cytokines and stromal cells of adipose tissue on integration of a two-component composite net imlant into biological tissues].

Morphological changes in biological tissues, surrounding the composite net-like implant, owing large pores "Ultrapro", and also its combination with adipose transplant, fibrin, enriched with thrombocytes, were studied in experiment on 36 adult male rats of a Wistar line. While application of such construction the processes of creation and organization of connective tissue, neoangiogenesis as well as development of a new adipose tissue are improved. As a consequence of increase of concentration of highly active biological substances and regenerative cytokines in combination of the net implant with adipose transplant, containing multipotent stem cells, proliferative activity of all cellular elements, surrounding the net implant, is raising, what predispose its optimal integration into surrounding tissues.

Development of methodology for identification and assessment of ecosystems with an underground source of tritium.

The article considers the issues of working out the suitable approaches for identifying zones with the presence of underground near-surface waters with increased concentrations of tritium discharged into a surface reservoir. The following methods were used as possible methods: determination of tritium content in snow cover, determination of tritium content in vegetation in the form of tritium of free water and organically bound tritium, determination of tritium content in river water and coastal vegetation. The studies were carried out at a previously identified site where groundwater with a tritium concentration of up to 6000 Bq/l is present, located in the vicinity of the city of Obninsk (Kaluga region, Russia). As a result of the conducted research, it was concluded that the analysis of the distribution of tritium in vegetation is an excellent methodological technique for identifying areas of location of near-surface underground waters contaminated with tritium. As a control parameter, both the concentration of tritium in the free water of plants and the content of organically bound tritium can be used. To detect underground tritium contamination the most promising use is the following indicator - the content of OBT in the shoots of woody plants. This parameter is very informative, and the sampling procedure for its determination has no seasonal restrictions, unlike such parameters as the content of tritium in grass and leaves, the content of tritium in snow cover, surface waters, which are preferably collected only in summer or winter. It should be noted that the control of surface waters of the groundwater discharge zone may not be a sufficiently informative indicator for identifying areas of polluted water inflow, since it depends on the ratio of the volumes of leaking polluted groundwater and the annual flow of the watercourse.

Visualization of the relief of the human body using stereo photography and quantification of its parameters.

An improved method for digital stereo photography for a living object allowed us to register the relief of human back as the indicator of dysplastic process or effectiveness of its treatment. We proposed a set of relief parameters to evaluate quantitatively the shape of the back in the dynamics. Three methods of assessment of varying difficulty are discussed. The safety and accessibility of the method of stereo photography allows us to study the development of dysplastic processes at the early stage, first of all in children.

[Principles of antihypertensive therapy in metabolic syndrome].

Clinical features of arterial hypertension in patients with metabolic syndrome are described with reference to antihypertensive therapy and the choice of adequate drugs for the purpose. Characteristics of the most frequently used preparations are presented along with algorithms for their application depending on clinical condition. Advantages of combined antihypertensive therapy in metabolic syndrome are substantiated, their most efficacious combinations are recommended.