co-infection in patients with COVID-19.

To assess the impact of infection on the course of COVID-19. The authors included 809 patients with COVID-19 in this retrospective study: 55 had infection, 23 had -negative antibiotic-associated diarrhea and 731 had no diarrhea. in feces was determined by immunochromatographic test for its toxins.

Two consecutive attacks of diarrhea in 15 COVID-19 patients: An antibiotic-associated one following the viral one.

Of the 971 patients admitted to our Clinic with suspected COVID-19, 15 (1.5%) presented with two consecutive attacks of diarrhea. One of those patients (a 47-year-old woman) required admission to the intensive care unit and mechanical ventilation.

[Two consecutive attacks of diarrhea in 15 COVID-19 patients: An antibiotic-associated one following the viral one].

Of the 971 patients admitted to our Clinic with suspected COVID-19, 15 (1.5%) presented with two consecutive attacks of diarrhea. One of those patients (a 47-year-old woman) required admission to the intensive care unit and mechanical ventilation.

Early viral versus late antibiotic-associated diarrhea in novel coronavirus infection.

Diarrhea is one of the manifestations of the novel coronavirus disease (COVID-19), but it also develops as a complication of massive antibiotic therapy in this disease. This study aimed to compare these types of diarrhea.We included patients with COVID-19 in a cohort study and excluded patients with chronic diarrhea, laxative use, and those who died during the first day of hospitalization.

[Analysis of the publications of the journal «Forensic medical examination» on the problem of identification from 1980 to 2018].

The analysis of the publications of the journal "Forensic medical examination" in the field of research «identification» for the period from 1980 to 2018 is carried out. Using the scientometric method, we studied the dynamics of publications on the study of the development of the scientific direction in order to objectively evaluate its relevance and possible prospects. The results of the analytical study demonstrated a wide range of objects and research methods.

Effect of Transplantation of Mesenchymal Stem Cells on the Density of Pial Microvascular Network in Spontaneously Hypertensive Rats of Different Age.

Using a TV device for studying microcirculation (×40), we analyzed the density of the whole microvascular network and the density of arterioles in the pia mater of the sensorimotor cortex in SHR rats of different ages (3-4 and 12 months) after intracerebral transplantation of human mesenchymal stem cells. We found that the density of pial microvascular network in SHR rats receiving transplantation of human mesenchymal stem cells increased to a level observed in young Wistar-Kyoto rats.

[The effect of ultra high frequency electromagnetic fields on the intrarenal blood flow and kidney morphology in pyelonephritis (experimental study].

The study was made of the action of electromagnetic decimetric waves (DMW) of mild and strong heat power and placebo on intraorganic circulation using functional polyrheography and morphological examination of the kidneys with infectious-inflammatory process. DMW of the above power have a marked hemodynamic action via stimulation of the circulation of the intermediary zone with an effect of redistribution of the intrarenal blood flow. Weak heat DMW in experimental pyelonephritis exhibit a distinct antiinflammatory effect while strong DMW impact aggravates vascular reaction associated with inflammation.

[Use of super-high frequency electromagnetic fields on intrarenal circulation and morphological status of health kidneys (experimental study)].

The experimental study investigated action of electromagnetic waves (84 mW/cm2 and 395 mW/cm2) on functional-morphological features of healthy kidney of female rats. A marked hemodynamic effect of decimetric waves is shown which operates via stimulation of intermediary zone with redistribution of intrarenal circulation. Disturbance of circulation occurs in dysregulation of the intrarenal blood flow under overstimulation of the organ circulation with 395 mW/cm2 decimetric waves.

[Histologic and cytologic evaluation of chronic gastritis].

It is in the gastrobiopsies that morphological features of chronic gastritis--inflammation and activity according to the International Classification of Gastritis (1990)--are more pronounced in the atypical hyperplasia and dysplasia than in normal epithelium. This means that inflammatory cells may play a role in the development of atypical hyperplasia and moderate dysplasia. Nuclear-cytoplasmic ratio in cases of the foveolar epithelium dysplasia was 0.

[Diagnostic criteria of pyloric helicobacter infection in peptic ulcer].

Helicobacter pylori (HP) in 41 patients (10 with stomach ulcer and 31 with duodenum ulcer) was found in gastro-biopsies from the stomach antrum before and after the treatment. The following methods to reveal HP were used: Giemsa staining, immunoperoxidase reaction with polyclonal monospecific antibodies against HP, urease rapid test. HP was also revealed in the blood serum by antibodies against HP by means of enzyme immunoassay.

[Clinical value of fine-needle aspiration biopsy of the thyroid gland].

The work compares the results of fine-needle aspiration biopsy (FAB) of the thyroid gland in nodular and diffuse-nodular euthyroid goiter (63 patients) with the findings of pathomorphological study of the operative material (51 patients). The authors' original device for puncture of the thyroid node is described. The suggested method makes it possible to raise the efficacy of obtaining an adequate amount of aspired material to 92%.

[Campylobacter pylori gastroduodenitis in children with juvenile rheumatoid arthritis].

Clinico-morphological study of the gastroduodenal system and also morphometric investigations of the degree of gastroduodenitis activity and the condition of the local immune system were made in 30 children aged from 4 to 15 years with juvenile rheumatoid arthritis (JRA). Microbiological, histological and electron microscopic methods for revealing Campylobacter pylori (CP) were used. Interrelationship between various clinical manifestations of JRA with the nature of gastroduodenal system affection and with the incidence of microbial colonization of SP was determined.

[Lectin-histochemical characteristics of the epithelium in intestinal metaplasia, polyps and cancer of the stomach].

Distribution of lectins (PNA, SBA, WGA, and Con A) has been studied in 53 stomach biopsies. Positive lectin reaction in the foveolar epithelium is observed, including dysplastic foci in the apical plasmalemma and in the cytoplasm around the nucleus this corresponding to the Golgi complex. It was mainly the apical plasmalemma of the columnar epithelium in the foci of intestinal metaplasia.

[Chronic gastroduodenitis in children and Campylobacter pylori].

Gastric biopsies from 90 children (from 5- to 15-year-old) with chronic gastroduodenitis were examined for Campylobacter pylori (CP) by bacteriological, histological (Giemsa stain, argentation by Warthin-Starry, acridine orange stain) and electron microscopical methods. CP is detected in 81.2% children.

[Campylobacter pylori and the reparative processes in peptic ulcer].

The paper deals with reparative potential of gastric and duodenal mucosa in ulcer in connection with the presence and quantity of Campylobacter pylori (CP) which is found practically in all patients not only with duodenal localization of ulcer but with mediogastric and pyloroantral localization as well. No correlation between the CP presence and CP mucosa colonization on the one hand and the type of reparative processes in the mucosa is found. The presence or the absence of CP as well as the degree of CP mucosal dissemination have no influence on the clinical course of the ulcer.

[Ameloblastoma of the mandible: cytohistological parallels].

Ameloblastoma (also known as adamantinoma, adamantine epithelioma, adamantinoblastoma, and epithelial odontoma) is a benign tumor of ectodermal origin arising from odontogenic epithelium, most commonly in the lower molar region in individuals aged between 20 and 50 years. Several histological variants are recognized, the most common being the follicular type. The present communication demonstrates the desirability of conducting parallel cytological and histological studies in cases of jaw tumors.