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ADHESIVE AND PERSISTENT POTENTIAL OF THE OPPORTUNISTIC MICROORGANISMS ISOLATED FROM THE RESPIRATORY TRACT OF THE PATIENTS WITH ACUTE RESPIRATORY VIRAL INFECTION

Authors: Holubnycha V.M.Chemych M.D.

Pages: 153-159

Abstract

The purpose of the study was to evaluate the frequency of the opportunistic pathogens isolation from the upper respiratory tract and gastrointestinal tract of the patients with acute respiratory viral infection. In addition, our task was to examine the factors that could realize microbes’ pathogenic potential and their influence on clinical manifestation.

Clinical and laboratory examination of 42 patients with acute respiratory viral infection was conducted. The investigation of the micro-ecological violations character was conducted using bacteriological and immunological study of nasal swabs from patients with acute respiratory viral infection. Research of the anti-lysozyme and anti-interferon activity was carried out according to the method of deferred antagonism using commercial preparations of lysozyme and human leukocyte interferon. Adhesive potential of the microbes was conducted using of the O+/- human blood group. Statistical analysis of the results was performed by determination of the relative error values, Student coefficient, and Pearson correlation coefficient.

There were isolated and identified 207 strains of bacteria and fungi. Among microorganisms isolated from the respiratory tract the proportion of opportunistic pathogens was 63.0 %. Staphylococci (73.4%) were isolated most often, and the level of the respiratory tract contamination by these pathogens in patients with complicated and uncomplicated course was similar. Determination of persistent factors showed the depending of the clinical course on the staphylococci anti-lysozyme and anti-interferon activity level.

Staphylococci are the dominant members of the normal microflora in patients with acute respiratory viral infection. Presence of the anti-lysozyme and anti-interferon activity in the microorganisms has influence on the clinical features of viral infections in adults.

Key words: viral infection, anti-lysozyme, anti-interferon activity, staphylococci, complicated course.

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