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The article presents a clinical case of the fatal Mallory- Weiss syndrome, which suddenly developed in an 86-year-old patient with a new coronavirus infection COVID-19, complicated by bilateral polysegmental pneumonia. The patient had no history of gastroesophageal refl ux disease, gastric ulcer or duodenal ulcer. The level of D-dimer on admission was elevated, but the patient was prescribed a reduced dose of anticoagulants (heparin). Despite the initial positive dynamics of the condition, the patient had a wave-like course of COVID-19, followed by the development of Mallory- Weiss syndrome, extremely severe post-hemorrhagic anemia and multiple organ failure, which became the cause of death.

Motor and non-motor symptoms are identified in the clinical picture of Parkinson's disease (PD). Among its non-motor manifestations, cognitive impairment (CI) and emotional disorders play a special role in PD. It is important to search for new forms and methods of cognitive therapy in patients with PD.Objective:to analyze neuropsychological status and quality of life (QOL) in PD patients and to evaluate the efficiency of personalized combination therapy with a stimulating cognitive motor training on computer and mobile devices in these patients.Patients and methods. The investigation enrolled 112 patients with PD. A study group included 56 PD patients who received a cycle of combination therapy with cognitive-motor training on PC and mobile devices; a control group consisted of 56 PD patients who had only a drug therapy cycle. To evaluate neuropsychological status and QOL, the investigators used the Montreal Cognitive Assessment (MoCA), the McNair and Kahn memory self-evaluation scale, the Hospital Anxiety and Depression Scale (HADS), and the 36-Item Short Form Health Survey (SF-36) questionnaire.Results and discussion. According to MoCA scores, CI of varying severity was diagnosed in the majority of patients: in 75 and 80.4% in the study and control groups, respectively. Depressive syndrome was detected in 53.6 and 64.3% in these groups, respectively. According to the SF-36, the physical status of patients had the greatest effect in reducing their QOL. There were treatment-induced statistically significant positive changes for the following domains: physical functioning (pConclusion.The investigation has shown the efficiency of personalized therapy including stimulating cognitive-motor training on computer and mobile devices, which improves neuropsychological status and QOL in patients with PD.

The European community of gastroenterologists in 1997 recognized GERB as "illness of the 21st century". Diseases of a respiratory tract take the leading place among all extra esophageal implications of a gastroesophageal reflux disease. Among them bronchial asthma and a chronic obstructive pulmonary disease are the most widespread. The study of the features of the current and modern methods of diagnosing bronchial asthma, obstructive sleep apnea syndrome and chronic obstructive pulmonary disease associated with gastroesophageal reflux disease is of great importance for identifying potential obstacles to effective treatment and preventing an increase in the risk of hospitalizations of patients with this co-morbid pathology. The morbidity of the pathology of the respiratory tract, combined with gastroesophageal reflux disease, is steadily growing. There is a large number of publications concerning the relationship between gastroesophageal reflux disease and diseases of the bronchopulmonary system, but the etiopathogenesis and the cause-and-effect relationship of these diseases remain in question. 1t is interesting to note that the syndrome of obstructive sleep apnea is not included in the list of extra-oesophageal manifestations, both probably and reliably associated with gastroesophageal reflux disease (according to the Montreal Consensus, 2006), but is of great interest to researchers in recent years.

The activity of membrane-bound NADH-methemoglobin reductase in erythrocytes and the physical state of lipids in erythrocyte membranes under oxidative stress in cells were studied. A decrease of the activity of membrane-bound NADH-methemoglobin reductase and a change of physical state of the lipid bilayer of membranes under oxidative stress were found in erythrocytes in vivo and in vitro.

In the present work we studied, by chemiluminescence measurements, the influence of lead on the production of reactive oxygen species (ROS) in haemolysates obtained from human erythrocytes incubated in the presence of different concentrations of lead acetate. Moreover, we evaluated the modification of proteins and lipids in human erythrocyte and lymphocyte membranes by using the fluorescence probes N-(1-pyrene)maleimide (PM), laurdan and pyrene. No significant changes in chemiluminescence were detected for erythrocytes incubated with 1–10 µM lead acetate for 3 h at 37 °C. By increasing the lead acetate concentration in cell suspensions up to 50 µM for the same incubation time, the percentage of chemiluminescence inhibition was ca. 20%. It was shown that, after incorporating fluorescence probes in the membrane lipid bilayer of erythrocytes and lymphocytes treated with 10 and[sol ]or 50 µM lead acetate, the total fluorescence intensity and the excimer to monomer intensity ratio of PM decreased and the generalized fluorescence polarization of laurdan decreased by 10–15%. The pyrene excimerization coefficient (κex) increased by 20% (in comparison with a magnitude of κex for white membranes isolated from intact erythrocytes) with 6–10 µM lead acetate for 3 h at 37 °C. The data obtained suggest that the effect of low concentrations of lead acetate does not cause production of ROS in erythrocytes in vitro, but can change the physicochemical state of proteins and lipids in erythrocyte and lymphocyte membranes. This effect is important because it influences the enzymatic activity and the functionality of receptors and channels present at the plasma membrane level, thus modulating the molecular composition of the intracellular space and cell functions. Copyright © 2005 John Wiley & Sons, Ltd.