Taxonomic composition, population level, and microecological parameters of microbiota of purulent content of the tympanic cavity in patients with chronic purulent mesotympanitis

Resume. To study the taxonomic composition, population level and microecological indices of ecosystem "macroorganism-microbiota" purulent contents tympanic cavity in patients with chronic mesotympanitis.Materials methods. The samples (ears discharge) taken from 78 (38-64 years old) mesotympanitis were used this study.A bacteriological examination selected was carried out by isolating identifying microorganisms determination their sensitivity to antibiotics. investigation included morphological, tinctorial, cultural biochemical properties isolated cultures conventional Inocula ear canals 27 healthy people aged 35-62 a control group.To reveal mechanisms colonization (contamination) external auditory canal ecological method, which allowed determine biological characteristics associative groups coexistence processes different microbiota. features species diversity richness microbiocenosis characterized value Margalef’s Whittaker’s indices.The taxon dominance biotope determined Simpson’s Bɟrger-Parker’s [11]. quantitative predominance its role formation dominance.Results. results show that persistence index, frequency occurrence taxon, as well index Margalef Whittaker, Simpson Berger-Parker there is common content - S. aureus. There’re not often found epidermidis, C. xerozis, haemolyticus, E. faecalis, P. aeroginoza, vulgaris, albicans, A. niger, according these are accidental. In course development contamination conditionally pathogenic staphylococci (S. aureus, haemolyticus), enterococci (E. faecalis), enterobacteria (P. vulgaris), candida aspergillus. leading agents purulent-inflammatory process 23 (29.49 %) hemolyticus faecalis 13 (16.67 patients, aeroginoza 10 (12.82 7 (8.47 patients- 4 (5.13 3 (3.85 albicans one patient (1.28 inflammatory caused niger. cavity, opportunistic pathogens isolated.Conclusion. middle polyetiological disease bacteria fungi (S .aureus, hemolyticus, niger). epidermidis), enterococci, pseudomonads. most (94.87 content, an association consisting two belonging 12 persists. microflora diverse must be considered for empiric antibacterial therapy.