[Influence of cardiorespiratory training program on the intercellular adhesion molecule level in patients with postmastectomy syndrome]. / Vliyanie programmy kardiorespiratornykh trenirovok na uroven' molekul mezhkletochnoi adgezii u patsientok s postmastektomicheskim sindromom.

Postmastectomy syndrome (PMS) is a complex neurovascular set of symptoms that develops in most patients after breast cancer (BC) treatment and significantly reduces the quality of life. One of the potential mechanisms of its occurrence is considered to be an endothelial dysfunction. The possible method of reducing manifestation of endothelial dysfunction is systematic aerobic dynamic training. OBJECTIVE: To evaluate the influence of 12-week aerobic dynamic training program of moderate intensity on the endothelial dysfunction laboratory markers and life quality in patients with PMS. MATERIAL AND METHODS: Single-center prospective randomized trial included 40 patients with PMS divided into study (20 patients) and comparative (20 patients) groups, as well as 20 healthy female volunteers. The expression level of soluble intercellular adhesion molecule-1 (ICAM-1) and platelet endothelial cell adhesion molecule-1 (PECAM-1) were evaluated in all participants at baseline by enzyme-linked immunosorbent assay method, and additionally psychological and physical component of health by SF-36 questionnaire were assessed in patients with PMS.Patients of study group received a course of 12-week partially controlled aerobic dynamic training of moderate intensity lasting 45 minutes with frequency equal 5 times per week. Patients with PMS were re-evaluated for ICAM-1 and PECAM-1, as well as for life quality. RESULTS: The group of patients with PMS after BC treatment had increased level of ICAM-1 in long-term period, that may indicate endothelial dysfunction. Statistically significant decrease of endothelial dysfunction laboratory markers was revealed in patients with PMS, who underwent the course of cardiorespiratory training. In the same time, the dynamics of changes in ICAM-1 was higher in the study group than in comparative group. Further, improvement of physical and psychological components of health by SF-36 questionnaire was found. CONCLUSIONS: The program of cardiorespiratory trainings of moderate intensity in patients, who had BC treatment a year ago, decreases intercellular adhesion molecules level that may show an improvement of endothelial dysfunction.

Tolerability of an Individualized Physical Rehabilitation Program in Patients Dependent on Inotropic Support With End-Stage Chronic Heart Failure.

Aim      To assess the tolerability of an individualized physical rehabilitation program (PRP) in inotrope-dependent patients with end-stage chronic heart failure (CHF).Material and methods  This prospective randomized study included 120 men aged 18-65 years with left ventricular ejection fraction ≤30 % and blood pressure ≥90 / 60 mm Hg. Patients who have received dobutamine or dopamine for ≥2 weeks were randomized into two groups: group 1, 40 patients who participated in the PRP and group 2, 40 patients who did not participate in the PRP. Group 3 included 40 patients without inotropic support who participated in the PRP.Results Patients of groups 1 and 3 attended >80 % of the scheduled classes without developing life-threatening adverse events (AEs) associated with exercise (E). After 6 months of the study, the exercising patients achieved a comparable (average) E intensity: 44 [35; 50]% and 45 [40;52]% of heart rate reserve and Borg scale scores 14 [12; 14] and 13 [11; 14] in groups 1 and 3, respectively (p>0.05). Initially, after 3 and 6 months at the peak of physical activity in groups 1 and 3, there was no decrease in arterial blood oxygen saturation according to pulse oximetry (SpO2) <93 %. At baseline, lactate levels in central venous blood at rest were normal in all groups. After 6 months, the lactate concentration was 1.1 mmol / l in group 1, 2.3 mmol / l in group 2, and 1.4 mmol / l in group 3 (р1-2=0.005; p2-3=0.008, respectively). At the E peak at baseline, after 3 and 6 months, comparable increases in lactate not exceeding 3 mmol / l were detected in groups 1 and 3.Conclusion      The study allowed assessment of the tolerability of individualized PRP performed at the aerobic level of energy supply, in inotropic-dependent patients with CHF. Individualized 6-month PRP in inotropic-dependent patients with end-stage CHF, provided safety criteria are met, is well tolerated and does not increase the number of AEs associated with CHF and physical rehabilitation (PR). Continued inotropic support with dopamine or dobutamine should not be considered as a contraindication to PR in patients with CHF in the absence of E intolerance or life-threatening AEs.

[Comparative effectiveness of various methods of physical rehabilitation in the complex treatment of patients with dyscirculatory encephalopathy with vestibulo-atactic syndrome]. / Sravnitel'naya effektivnost' razlichnykh metodik fizicheskoi reabilitatsii v kompleksnom lechenii patsientov s distsirkulyatornoi entsefalopatiei s vestibulo-atakticheskim sindromom.

Dyscirculatory encephalopathy is a complex of functional and structural changes in the brain that occur against the background of chronic insufficiency of cerebral blood flow. The high prevalence of this pathology, as well as a pronounced impact on the quality of life and working capacity of patients, determines the importance of optimizing rehabilitation measures and developing the most promising strategies for physical rehabilitation. OBJECTIVE: To compare the effectiveness of a special complex of therapeutic (vestibular) gymnastics and training with biofeedback (BFB) on a stabiloplatform in the rehabilitation of patients with dyscirculatory encephalopathy with vestibulo-atactic syndrome. MATERIAL AND METHODS: A cohort prospective single-center randomized comparative study of the clinical effectiveness of the author's complex of therapeutic exercises and stabilometric training with BFB in the complex treatment of patients with dyscirculatory encephalopathy with vestibulo-atactic syndrome was carried out. The study involved 40 patients aged 65-89 years who were randomized into 2 equal groups. Patients of the 1st group, against the background of drug therapy and physiotherapy, were trained on a stabiloplatform with BFB (a training game according to the manufacturer's instructions). Patients of the 2nd group performed a complex of therapeutic (vestibular) gymnastics specially designed for this study. The effectiveness of physical rehabilitation was assessed by the dynamics of (1) subjective symptoms (complaints of patients), (2) indicators of stabilometry (symmetry index, the sum of the coordination indices for the right and left legs, fluctuation) and (3) the results of functional testing using the Get up and go test, the Berg balance scale and the Tinetti mobility scale. RESULTS: In the group of patients who performed vestibular gymnastics, in contrast to patients who participated in training using a multifunctional stabiloplatform with BFB, a statistically significant improvement was revealed when assessed by the Get up and go test and the Berg balance scale. In none of the groups, a distinct dynamics of stabilometry indicators was registered. No correlation was found between the main indicators of stabilometry and the data of functional tests. CONCLUSION: Thus, vestibular gymnastics has demonstrated greater effectiveness in the rehabilitation of patients with dyscirculatory encephalopathy and vestibulo-atactic syndrome in comparison with stabilometric training with biofeedback. The discrepancy between stabilometry indicators and the results of functional testing in patients requires a targeted study.

Effects of Inhibitors of Necroptosis and Autophagy on Morphofunctional Characteristics of the Myocardium during Static Cold Storage of Donor Rat Heart.

Cardioprotective effects of necrostatin-1 (necroptosis inhibitor) and 3-methyladenine (autophagy inhibitor) were studied on the model of long-term cold preservation of rat heart. Addition of necrostatin-1 (490 nmol/liter) or 3-methyladenine (4.5 mmol/liter) to custodiol preserving solution reduced myocardial infarction size and improved left-ventricular function during reperfusion after 8-h preservation at 4°C. Inhibition of necroptosis and autophagy contributed to the cardioprotective effect under conditions of cold preservation of the donor heart.

[CARDIOPROTFETIVE EFECTS OF NECROSTATIN-7 IN THE RAT MODEL OF PERMANENT CORONARY OCCLUSION].

The cardioprotective effects of necroptosis inhibitor necrostatin-7 were studied in the rat model of permanent coronary occlusion. It was found that intraperitoneal injection of necrostatin-7 at a dose of 14.5 mg/kg 60 minutes prior to permanent left coronary artery occlusion reduced the amount of scar tissue and scar length in the left ventricle on the 21st day after surgery. In addition, pretreatment with necrostatin-7 resulted in decreased plasma level of N-terminal pro-brain natriuretic peptide, which points to the improvement in left ventricular function.

Study of cardioprotective effects of necroptosis inhibitors on isolated rat heart subjected to global ischemia-reperfusion.

The cardioprotective effects of necroptosis inhibitors necrostatin-1 and necrostatin-5 were studied on the isolated heart model in rats. Intraperitoneal injection of necrostatin-1 (1.65 mg/kg) or necrostatin-5 (2.46 mg/kg) 60 min before reperfusion of the isolated heart reduced the infarction zone caused by 30-min global ischemia and 120-min reperfusion. Intracoronary injection of necrostatin-1 (44.5 µmol/liter) caused an increase of left-ventricular systolic pressure, that is produced a positive inotropic effect, but did not reduce the infarction zone.

Cardioprotective properties of dimethyl sulfoxide during global ischemia-reperfusion of isolated rat heart.

Cardioprotective properties of dimethyl sulfoxide (DMSO) were studied in the isolated rat heart model. Intraperitoneal administration of DMSO to animals for 3 days before the experiment, but not addition of DMSO to the perfusate, reduced infarction size. Both intraperitoneal and intracoronary administration of DMSO reduced the severity of postischemic left-ventricular dysfunction.

[Toxicological evaluation of health risk of local fire in a closed environment]. / Otsenka toksikologicheskoi opasnosti lokal'nogo pozhara v germopomeshchenii.

Local fire in an enclosed environment was simulated, and the composition and toxicity of compounds outgassed by the polymers were investigated. Highly toxic compounds, e.g. prussic acid, carbon monoxide, benzene, nitrogen oxides, formaldehyde, were identified. The toxic hazard of the products depended on the mass and chemical composition of the burnt materials, time of exposure and enclosure volume. In the case of a local fire the enclosed atmosphere should be monitored by rapid diagnostic methods using indicator tubes.

[Effect of heating on the benz(a)pyrene content in wood pyrolysis products]. / Vliianie nagreva na soderzhanie benz(a)pirena v produktakh piroliza drevesiny.

Benz(a)pyrene was detected in the ether-insoluble fraction of acidic water on being heated to 100 and 300-450 degrees C, while heating of total acidic water and settled tar at 300-450 degrees C did not cause any changes in the content of this compound. The obtained results suggest that the ether-soluble fraction of acidic water contains compounds which promote benz(a)pyrene breakdown or inhibit its synthesis from products of timber pyrolysis.

[Express method of laboratory study of the outgassing of thermostable plastics and rubbers]. / Ekspress-metod laboratornogo issledovaniia gazovydeleniia termostoikikh plastikov i rezin.

Time-temperature dependence of concentrations of outgasing products of polymers and rubbers was studied. Applying the principle of time-temperature equilibrium, the exposure time for a laboratory rapid study of polymers at 100 degrees C was estimated to be 1 hr for enamels, lacquers and dyes, 1.5 hr for block and sheet polymers, 2.5 hr for sealants and rubbers, and 4 hr for textile materials, measured from the time when the preassigned temperature was achieved. The rapid method can be recommended for preliminary chemical study of polymers at the stage of their laboratory testing.