Prevalence And Antibiotic Resistance of Opportunistic Pathogenic Microorganisms in Water Reservoirs of Rostov-on-Don City

Abstract

In 2016 and 2017 the study and analysis of the prevalence of opportunistic pathogenic microorganisms (OPM), resistant to antibacterial drugs in the water reservoirs of Rostov-on-Don were carried out. 1522 strains were isolated and 101 species of microorganisms were identified. In 2016 the percentage of nonfermentative microorganisms (NFM) was 45,9 %, Enterobacteriaceae – 28,6 % and Aeromonadaceae – 24,9 %. In 2017 dominating were the representatives of Aeromonadaceae (39,1 %) and Enterobacteriaceae (37,5 %), the portion of NFM amounted to 23,0 %. The results of OPM antibiotic resistance study demonstrate that in 2017 the proportion of sensitive and monoresistant bacteria considerably decreased, and the number of strains with multiple antibiotic resistances increased. The resistant strains isolated from the external environment should be considered as possible sources of threats to biological security.

Determination of the Microorganisms’ Resistance to Antibiotics in the Bacterioplankton Community in the Akmola Region Lakes

“…Note: *sensitivity (+) and resistance (-) to antibiotics. **List of 40 commercially successful antibiotics: amoxicillin (1), benzylpenicillin (2), nitox forte (3), kanamycin (4), lomefloxacin (5), streptomycin (6), polymyxin M sulfate (7), doxycycline (8), furazolidone (9), norfloxacin (10), enrofloxacin (11), tylosin (12), rifampicin (13), chloramphenicol (14), novobiocin (15), lincomycin (16), ampicillin (17), thiamisol (18), imipenem (19), clarithromycin (20), enronit (21) The next group is 40-49% resistance for lomefloxacin, chloramphenicol, clorithromycin, ciprofloxacin, and gentamicin. 30-39% resistance was recorded for enrofloxacin, thiamisol, netilmicin, piperacillin, azithromycin, and tromexin.…”

“…However, research in this area is just beginning to develop. The occurrence of antibacterial drugs in Determination of the Microorganisms' Resistance to Antibiotics in the Bacterioplankton Community in the Akmola Region Lakes the environment is of great interest to researchers, since their impact on biota can cause the most unpredictable consequences, and it is also rare to find studies on the content of more than 20 pollutants using one method [Wilkinson et al, 2022;Bereznyak et al, 2018].…”