Vol 21, No 3 (2024)

The search for highly effective and safe methods in regenerative medicine has always been and remains an urgent problem. There are many drugs on the pharmacological market, but they cannot be considered to meet the requirements. One of the potential compounds capable of solving this problem is platelet-enriched autoplasm, which is economical and obtained directly from human blood with further centrifugation and platelet activation. An impressive number of studies are presented in the domestic and foreign literature, which confirm its effectiveness in assessing the area of a wound defect, the rate of regeneration and the absence of side effects. This is ensured by the content of a large number of growth factors and various biologically active compounds. In modern surgical practice, platelet-enriched autoplasm has found extensive use in the treatment of chronic wounds of various etiologies, prone to long-term course and frequent relapses; in cosmetology and aesthetic medicine in the issue of improving the appearance of scars; in urology in the treatment of erectile dysfunction; in obstetric and gynecological practice in improving pregnancy and pregnancy outcomes, reducing recurrence of adhesions, correcting functional sexual dysfunction and a favorable course of in vitro fertilization.

The result of endodontic treatment depends on many factors: on the level of professional training of a dentist, the material and technical equipment of the workplace, competent diagnosis and chosen treatment tactics, which is largely impossible without the use of modern scientific achievements. The article provides an overview of the current literature on the treatment of complicated caries. The methods of treatment of pulpitis and periodontitis using modern methods and tools are described, which significantly improves the effectiveness of treatment.

The authors conducted the descriptive literature synthesis to present the structure and mechanism of the FAS family action, the purpose of determining the concentration of biomarkers in blood serum, the relationship of various FAS ligands levels with the patient’s clinical condition - the HF functional class (FC), as well as the sFASL using possibility to predict the HF course. The review analyzed 22 studies on the FAS system biomarkers participation in the HF pathogenesis and the relationship of their serum concentrations with the HF severity. A threshold sFASL value of 0.0999 ng/ml is associated with this pathology unfavorable course, while the increase in sFASL degree directly correlates with an increase in the FC of HF, the progression and death risks.

Purpose: to perform long-term monitoring of the state of several morphometric parameters of the retina and optic nerve in persons without glaucoma and patients with primary open-angle glaucoma (POAG) in the conditions of achieving tolerant and target IOP against the background of the use of various types of spectacle correction.

Material and methods: 139 patients aged 40–60 years with various types of clinical refraction were examined, 41 subjects (81 eyes) of them were without glaucoma, 98 patients (164 eyes) had POAG at stage I–II. In addition to standard methods, the scope of the examination included optical coherence tomography (OCT) of the optic nerve and the central area of the retina to determine the thickness of the retinal nerve fiber layer (RNFL), retinal ganglion cell complex (RGCC) and the area of the neuroretinal rim (NRR). The study was conducted in 4 observation groups. The first (21subjects) and the second (20 subjects) groups were represented by persons without glaucoma who used monofocal spectacle correction and progressive spectacle correction for near work, respectively. The third (50 subjects) and the fourth (48 subjects) groups were composed of patients with POAG who also used, respectively, monofocal spectacle correction for near vision or progressive spectacle correction against the background of topical hypotensive therapy with the achievement of tolerant and target IOP. The follow-up period was three years.

Results: There were no significant changes in the area of NRR (p > 0,5) and in the thickness of RNFL (p < 0,2) and RGCC (p < 0,3) over the three-year follow-up period in all patients without glaucoma. In patients with POAG who applied progressive correction, no negative dynamics was revealed in the NRR area (p > 0,5) and in the thickness of RNFL (p < 0,5) and RGCC (p < 0,5) during the follow-up period. POAG patients with using monofocal correction had noticeable losses in RNFL and RGCC thickness (p < 0,05) without a significant decrease in the area of NRR (p < 0,3).

Conclusion: The progressive spectacle correction using provides accommodative regulation of IOP in POAG and implements an indirect neuroprotective effect.

Introduction: The aim of this work was to develop a prototype of a modular extrusion bioprinter capable of performing 2D and 3D printing with hydrogels based on sodium alginate and gelatin.

Materials and methods: The bioprinter uses Cartesian coordinate system, the print head is movable in Y and Z axes, the printing platform is in X axis and equipped with cooling system. Constructs were printed with 3 types of gels: based on gelatin with the addition various concentrations of xanthan gum; based on combination of gelatin and sodium alginate; based on gelatin and xanthan gum with the addition of carbon nanotubes.

Results: The constructs from various gels corresponded to the structure determined by their digital models.

Conclusions: The developed system allows performing 2D and 3D printing with gels based on gelatin, sodium alginate, including those containing carbon nanotubes and/or xanthan gum for a wide range of experimental tasks.

One of the modern methods of multi-stage treatment of patients with widespread peritonitis, abdominal sepsis and abdominal injuries is vacuum-assisted laparostomy.

Aim: the methodology and practical aspects of the clinical use of vacuum-assisted laparostomy in the treatment of generalized peritonitis, abdominal sepsis and abdominal trauma are presented. A detailed illustrated description of the vacuum-assisted laparostomy technique is provided with the step-by-step implementation of all necessary procedures in patients with widespread peritonitis, abdominal sepsis and abdominal injuries. The attention of surgeons is drawn to important technical aspects of performing this technique to increase its safety and effectiveness.

The aim of the study was to analyze the dynamics of heart rate, assess the morphogenesis of the ST segment and T wave in patients with ventricular arrhythmias associated with type 2 diabetes mellitus (type 2 DM) based on the results of daily cardiac monitoring against the background of two regimens of metabolitotropic treatment. The study included 133 patients with type 2 DM with ventricular arrhythmias. The inclusion criteria for the study were: moderately severe type 2 diabetes in the stage of sub-/compensation on the background of combined glucose-lowering therapy without insulin, the presence of ventricular arrhythmias of classes III–V according to Lown B. and Wolf M. (1971). By random sampling, patients were randomized into 3 observation groups, statistically homogeneous in age, sex, duration of the diabetic syndrome, classes of ventricular arrhythmias. Patients of the 1st group (n = 44) received amiodarone and beta-blocker. Patients of the 2nd group (n = 45) received the same antiarrhythmic treatment, but in combination with meldonium for 3 consecutive months with the next 3-month course repeated after 6 months. Representatives of the 3rd group (n = 44) received treatment with amiodarone, beta-blocker and trimetazidine of the same duration. 24-hour ECG monitoring was performed at baseline, 3 months later, and 1 year later. Statistica 6.0 software was used for statistical processing. The examination revealed tachycardia syndrome and signs of pain and painless myocardial ischemia. It has been established that ventricular arrhythmias in type 2 DM are of a secondary nature, largely dependent on ischemic manifestations. Trimetazidine compared with meldonium showed a greater anti-ischemic effect, which made it possible to obtain a better antiarrhythmic effect. Trimetazidine is considered as one of the justified components of the treatment of ventricular arrhythmias of ischemic origin in patients with type 2 DM.

Full rehabilitation of patients after atypical extraction of wisdom teeth is not among the priority issues in dentistry, however, the duration and severity of postoperative inflammatory contracture of the masticatory muscles significantly affects the duration of the postoperative period, increasing the patient’s period of disability. Numerous studies indicate the advisability of local effects on tissues in order to improve blood and lymph circulation in the area of inflammation, which enhances the exchange of intercellular fluid and relaxes the masticatory muscles. A method of adaptive myogymnastics for early rehabilitation of patients is proposed and proved the effectiveness of its use.

Lesions of the oral mucosa (SOPR) are often the primary pronounced clinical symptom of somatic diseases. It is possible to find out which pathogenetic mechanisms and links of somatic pathology create conditions for the implementation of risk factors, the implementation and development of structural and functional disorders in the oral mucosa, with the aim of targeted therapeutic effects on changes in the SOPR and the general condition of the body as a whole. The purpose of the study was to establish the structure of diseases of the oral mucosa depending on gender and age in patients with various somatic pathology.

Materials and methods: A survey was conducted of 164 patients who sought advice from the Dental Hospital of Khabarovsk. Between the ages of 18 and 89. The average age of patients was (55.7 ± 1.38) years. All the subjects were divided into 4 groups depending on their age and the presence of diseases of internal organs. The comparison group included 30 somatically preserved patients of similar age and gender, by random sampling.

Results: It was found that with pathology of the oral mucosa, women out of the total number of cases were 2.5 times more than men. The greatest number of patients’ complaints about the diseases of COPD was in the age group of 60-74 years, unlike other age groups: 18-44 years by 1.8 times; 45–59 years by 1.2 times; 75–89 years by 2.7 times, respectively. Most diseases of the oral mucosa are manifested in the presence of systemic pathology. Somatic diseases were detected in 62.2 % of patients with COPD. Pathology of internal organs and systems affects 70.42 % of patients with lichen planus, 50 % of patients with leukoplakia, 80 % of patients with candidiasis, 26.32 % of patients with chronic aphthous stomatitis and 79.17 % of patients with glossitis. Diseases of the gastrointestinal tract are 1.2 and 2.8 times more dominant in the structure of the lesions of the SOPR compared to the pathology of the cardiovascular and endocrine system.

Findings: The revealed pattern of manifestations of pathological changes in the oral mucosa against the background of somatic pathology is of great diagnostic importance not only for dentists of various profiles, but also for clinicians of specialized departments, since ultimately all this affects the timeliness and quality of medical and diagnostic care for this category of patients.

Aim of the study is to evaluate the relationship between the number of laparoscopic operations and mortality in patients with perforated peptic ulcer.

Materials and methods: The functional relationships between the number of performed laparoscopic operations and the levels of hospital and postoperative mortality were studied based on the analysis of the results of surgical treatment of patients with a perforated ulcer in 2018.

Results: An analysis of the functional relationships between the number of laparoscopic operations performed and mortality was carried out based on the results of primary statistical information (2 189 patients with a perforated ulcer). Strong direct correlations have been established, which can be most reliably described within the framework of polynomial regression models (r² = 0.917 and r² = 0.889).

Conclusion: An assessment of trends in the reduction in hospital and postoperative mortality with an increase in number of laparoscopic operations will be determined only with standardized approaches to the usage of minimally invasive technologies in all areas of the Russian Federation.

The study revealed the combined effect of conditionally pathogenic flora and viral agents on the endometrium. Combined inflammatory and proliferative processes lead to severe changes in the endometrium and increase the risk of recurrent bleeding, pregnancy loss and infertility.

Molar-incisal hypomineralization (MIH), or systemic enamel hypoplasia, as it can be found in the ICD-10 revision rubricator used in the Russian Federation, is increasingly being detected at a dental appointment. Every day, clinicians are faced with the problem of competent management of such patients, choosing effective methods of prevention and therapy. The review presents modern points of view on the etiology of the disease, the rationale for the use of treatment and preventive measures regarding this nosology, which contribute to improving the quality of dental care. Particular attention is paid to drugs produced by domestic manufacturers.

The aim of this study was to evaluate the effect of solid herbal extract of Primula Veris L. and comparison drugs phenotropil and mildronate on the physical performance of female rats after chronic alcohol intoxication (CAI). CAI was modeled by replacing drinking water for 6 months with a 10 % solution of ethyl alcohol with sucrose (50 g/l). At the age of 16 months, the “Rotarod performance test”, “The horizontal rope walking test” and “Forced swim test with weight load” were performed. After CAI, rats show a deterioration in coordination and motor activity, a decrease in muscle strength and aerobic-anaerobic endurance. Solid herbal extract of Primula Veris L., phenotropil and mildronate contributed to an increase in the physical performance of animals after CAI.

The present study proposes a convenient approach to identify a series of novel substituted 1H-indol-5-,6-ylaminium trifluoroacetates with antimicrobial activity based on mass spectral data obtained using direct injection into an ion source at an elevated temperature when the salts decompose with the release of counterions: acids and organic bases – substituted 1H-indolylamines. By the presence of ions with m/z 69, 45, 28, 17 in the spectra, it is judged that the salts are formed by trifluoroacetic acid. Using the available literature data on the mass spectrometry of substituted indoles, aromatic amines, and carboxylic acids, substantiated schemes for the decomposition of molecular ions of organic bases, 1H-indolylamines, are compiled and discussed, in which the mechanism of formation and the structure of fragment ions arising under electron ionization conditions are given. The revealed general, as well as individual for individual representatives with a certain character and place of substitution in the indole bicycle, patterns of behavior of 1H-indolylamine radical ions under conditions of high-temperature mass spectral imaging make it possible to judge their structure and, in general, the structure of 1H-indolylamine trifluoroacetates. The approach used in this work can also be used to prove compounds of a similar group based on the analysis of their mass spectra.

The article discusses the treatment of chronic form of viral hepatitis C (HVGS) in children. Many problems of the issue under consideration relate to both the scarcity of official statistics and the ambiguity of approaches to the treatment of HVGS in children in our country and abroad. The authors show the most problematic loci from various aspects: from the side of epidemiology and clinical points of view - infectology, clinical pharmacology, and also proposed rational ways to solve existing problems.

A retrospective analysis of the statistical data of persons who died in the Tambov region over the past 5 years revealed one case of death from non-compact cardiomyopathy. The incidence of non-compact cardiomyopathy in the population is 0.014 to 1.3 %. Due to the non-proliferation of this pathology, a single recorded case attracted attention for research. This study presents a 10-year-old patient who was admitted to the intensive care unit in the decompensation stage, during which the disease ended in death. After analyzing the medical documentation, it was found that with the development of the disease, the clinical picture was erased, symptoms from the cardiovascular system did not appear, signs of decompensation were not observed until the moment of this hospitalization. Death occurred suddenly, autopsy revealed non-compact cardiomyopathy of the left ventricle, which through its complications led to non-coronary ischemia of the subepicardial myocardium of the left ventricle, which was the cause of death. Since the pathology is quite rare, the purpose of our study is to consider, on the example of a clinical case, the factors contributing to the fatal outcome in non-compact cardiomyopathy.