Bulletin of RSMU

ISSN Print 2500–1094 ISSN Online 2542–1204

Bulletin of RSMU

BIOMEDICAL JOURNAL OF PIROGOV UNIVERSITY (MOSCOW, RUSSIA)

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Gil AU, Demin AK

The significant proportion of the Russian population are active online social media users. Changes in alcohol consumption in this target group during the COVID-19 pandemic remain understudied. The aim of this survey was to investigate changes in alcohol consumption and factors associated with the increase in alcohol use among online social media users in Russia during the first months of the COVID-19 pandemic. An online survey was conducted among 1,518 users of online social networking services popular in Russia from June to September 2020. The survey revealed that 35.4% of men and 25.6% of women started drinking more frequently during the first months of the pandemic; 24.9% of men and 17.7% of women increased their usual consumption (volume) of alcohol on a typical drinking occasion, whereas 28.5% of men and 27.9% of women increased the frequency of heavy episodic drinking. Adjusted binary logistic regression analysis revealed a positive association between the increase in the frequency of alcohol consumption and the following factors: age from 18 to 29 years (OR: 1.710; 95% CI: 1.002–2.917), severe restrictions in everyday private life (OR: 3.127; 95% CI: 1.011–9.675) and severe negative professional or financial consequences due to the spread of SARS-CoV-2 (OR: 2.247; 95% CI: 1.131–4.465). The odds of an increase in the frequency of heavy episodic drinking were more than twice higher (OR: 2.329; 95% CI: 1.001–5.428) among those who had experienced severe negative consequences of the pandemic to their professional and financial situation. Higher typical frequency and usual consumption (volume) of alcohol on a typical drinking occasion and higher typical frequency of heavy episodic drinking before the pandemic were positively significantly associated with the increase in these parameters of alcohol consumption during the first months of the pandemic. In times of large-scale epidemics and public health crises, it is advisable to consider the possibility of implementing screening and brief interventions, including via online social media, to prevent problems associated with alcohol use.

Received: 2021-11-21

Published online: 2021-12-30

DOI: 10.24075/brsmu.2021.064

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VIEWS 2430

Evseev PV, Shneider MM, Mikhailova YuV, Shelenkov AA, Yanushevich YuG, Karlova MG, Moiseenko AV, Sokolova OS, Shagin DA

Multidrug-resistant Klebsiella pneumoniae strains are one of the major causes of nosocomial infections caused by the antibiotic-resistant bacteria. There are different options for dealing with this threat, among which is the clinical application of bacteriophages. The study was aimed to isolate and describe a virulent bactriophage, having the potential for therapeutic use. The standard phage biology and bioinformatic methods were used, which included the advanced techniques for protein structure prediction (AlphaFold software), and electron microscopy. The virulent podovirus KPPK108.1, being the member of genus Drulisvirus, which is able to specifically infect the K. pneumoniae strains with the KL108 type capsular polysaccharide, has been isolated from the wastewater. The sequence of the bactriophage genome has been defined, the biological properties have been investigated, and the genetic features have been described.

Received: 2021-12-08

Published online: 2021-12-30

DOI: 10.24075/brsmu.2021.068

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VIEWS 2668

Lomova NA, Chagovets VV, Tokareva AO, Dolgopolova EL, Karapetyan TE, Magomedova AP, Shmakov RG

Omics technologies hold great potential as the basis for development of the new diagnostic approaches in obstetrics. Cervicovaginal fluid (CVF) as part of the mother-placenta-fetus system can be used to diagnose obstetric complications. This study aimed to identify the features of lipid composition of the cervical canal secretion peculiar to Intrauterine Growth Restriction (IUGR) and preeclampsia (PE). We took CVF samples from 57 pregnant women and subjected them to an in-depth clinical-anamnestic and mass-spectrometric analysis. Lipid extracts of CVF were analyzed with a liquid chromatography system coupled with a mass analyzer. As a result, we identified 239 lipid compounds. In case of 17 lipids, mathematical analysis revealed significant differences between samples from women with normal pregnancy indicator values (normal group) and patients from the IUGR group (p < 0.05). As for the normal group and PE group patients, there were significant differences identified for 3 lipids (p < 0.05). Comparison of samples from the PE and IUGR groups yielded statistically significant differences in levels of two lipids (p < 0.05). Mainly, the lipids were oxylipins, sphingomyelins, triglycerides, and cardiolipins. The developed diagnostic model had the sensitivity of 0.81 and specificity of 0.91 (cut-off level — 0.50; AUC — 0.85). The data obtained are valuable in the context of development of the new methods of diagnosing placentaassociated complications of pregnancy and for understanding new mechanisms of pathogenesis of these complications.

Received: 2021-11-23

Published online: 2021-12-29

DOI: 10.24075/brsmu.2021.066

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VIEWS 2173

Chagovets VV, Vasil'ev VG, Iurova MV, Khabas GN, Pavlovich SV, Starodubtseva NL, Mayboroda OA

Mucins are large glycoproteins characterized by the abundant O-linked oligosaccharides (O-glycans) clustered on a protein backbone. Most of the circulating mucins are rapidly cleared by glycan-recognizing hepatic clearance receptors in the liver. Those mucins that remain in the bloodstream are most commonly used as markers in clinical diagnostics. One of such circulating mucins is MUC16; a peptide epitope of which is known as CA125 antigen — a marker for ovarian cancer. Here, using a targeted 1H-NMR profiling of plasma we are exploring a link between the measured CA125 values and the systemic metabolism of the patients within a group with confirmed high-grade ovarian cancer. The study allowed identifying statistically significant associations between the measured values of CA125 epitope and the plasma concentrations of glucose, glutamine, alanine, betaine and serine. The significance of the identified associations for the listed compounds is below 0.01. This, in turn, enables us to hypothesize about a possibility of including the metabolic measures into a composite score of the ovarian cancer based on the CA125 epitope of MUC16.

Received: 2021-12-01

Published online: 2021-12-29

DOI: 10.24075/brsmu.2021.065

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VIEWS 2252

Takhchidi KhP, Takhchidi NKh, Kasmynina TA, Mahno NA

Drusenoid pigment epithelial detachment is a condition characterized by separation of the retinal pigment epithelium from the underlying Bruch’s membrane due to formation of drusenoid deposits. The disorder represents the intermediate stage of the age-related macular degeneration, and is a risk factor for the age-related macular degeneration progression to late stage characterized by geographic atrophy, which results in the irreversible central vision loss. Management of patients with this disorder is in most cases limited to follow-up. The feasibility of using the multimodality low power mode laser therapy for treatment of drusenoid pigment epithelial detachment is reported. The results of laser photocoagulation of the retina demonstrate the morphological and functional recovery: retinal pigment epithelial detachment sealing, improvement of visual function, and restored retinal architecture.

Received: 2021-11-24

Published online: 2021-12-29

DOI: 10.24075/brsmu.2021.067

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VIEWS 2237

Mozheyko EYu, Pavlov AO, Chistov MA, Khramchenko MA, Gurevich VA

An anterior cruciate ligament tear is one of the most common injuries to the capsular ligament apparatus of the knee necessitating operative treatment. Postoperatively, patients with anterior cruciate ligament injuries develop a pathologic gait pattern. Today, innovative diagnostic and rehabilitation methods for patients with gait disturbances associated with such injuries are in high demand. Below, we present a case of using 3D motion capture analysis for the personalized assessment of gait function in a patient with the reconstructed anterior cruciate ligament two months after surgery. The analysis revealed that the patient had a slower, shorter, wider step with longer step intervals than the healthy subject; the flexion and extension amplitude in the large joints of the operated leg was smaller than in the healthy contralateral leg. Motion capture analysis can be used to assess the postoperative dynamics in patients with anterior cruciate ligament tears.

Received: 2021-11-20

Published online: 2021-12-28

DOI: 10.24075/brsmu.2021.063

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VIEWS 2559

Gavryushin MYu, Sazonova OV, Gorbachev DO, Borodina LM, Frolova OV, Tupikova DS, Berezhnova OV, Trubetskaya SR

Traditionally, anthropometric method is used in clinical practice for the diagnosis of excess body weight. Obesity is the excess development of primarily visceral and subcutaneous adipose tissue, which can be diagnosed by bioimpedance analysis (BIA). The study was aimed to assess the role of BIA of body composition in the diagnosis of the physical development disorders in children and adolescents. Anthropometric assessment and BIA were performed in 431 Samara school students aged 12–16 of the health status groups I and II (230 boys and 201 girls). The results were analyzed with the use of the regional regression scores, BAZ indices, and the body fat percentage values. The results of estimation using the regression scores showed that 22.61% of boys and 23.43% of girls were overweight, while more than 2/3 of the sample had a normal pattern of physical development. The BAZ indices revealed a significantly higher proportion of overweight children among boys (25.7%), than among girls (11.5%, p < 0.01). The body fat percentage fluctuations based on the BIA data were found not only in children with disharmonious physical development, but also in 60% of children with normal body weight. Moreover, the data of BIA confirmed the body weight fluctuations, revealed with the use of the regression scores, in the significantly larger number of cases compared to the low body weight and excess body weight, diagnosed based on the BAZ indices. Accordingly, anthropometric analysis with the use of the regional regression scores may be used at the baseline for the early diagnosis of the nutritional status disorders in children. To confirm overweight and obesity in children, as well as to provide further treatment, the reliable method for estimation of the body fat content is required, which may be the method of BIA.

Received: 2021-12-01

Published online: 2021-12-27

DOI: 10.24075/brsmu.2021.062

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VIEWS 2300

Takhchidi KhP, Takhchidi EKh, Kasmynina TA, Tebina EP

Macular retinal folds are a rare yet grave complication of surgical rhegmatogenous retinal detachment repair. Clinical symptoms vary depending on the location and severity of folding. Fold located in the periphery of the ocular fundus can be asymptomatic, but macular retinal folds cause diminished visual acuity and metamorphopsia. Currently, the most effective treatment for retinal folds is repeat surgery. Its serious disadvantage is the risk of complications in the early postoperative period, including hemophthalmia, inflammation, secondary glaucoma, cataracts, RRD recurrence, macular tears, retinal vascular occlusion, etc. The clinical case described below demonstrates the potential of combination laser therapy for the treatment of macular retinal folds based on the use of modern diagnostic and therapeutic methods.

Received: 2021-11-19

Published online: 2021-12-21

DOI: 10.24075/brsmu.2021.060

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VIEWS 2034