Pathogenicity Ferments Of Bacteria Isolated From Water of the Open Reservoirs

Abstract

We conducted a study on the pathogenicity of some ferments (DNA-ase, lecithinase, phosphotase) and hemolytic activity of Klebsiella, Pseudomonas aeruginosa, Salmonella and E.coli, isolated from water of the main water reservoirs in the Rostov region (Tsimlyansk Reservoir, Lower Don). It was found that the growth of the antropotehnogenic impact on the aquatic ecosystems contributed to the increase in the number of bacteria containing pathogenicity enzymes, that is to the strengthening of the adaptive properties of the studied bacteria.

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.…”

“…The impact of antibiotics can lead to a change in the species composition of bacterioplankton, up to an imbalance in the aquatic biocenosis. However, prolonged exposure to antibiotics should trigger the mechanisms of selection and adaptation of bacteria towards resistance to xenobiotics entering water bodies [Vaz-Moreira et al, 2014;Zhuravljov et al, 2015]. In the Republic of Kazakhstan, there are no domestic wastewater treatment plants where antibiotics are purposefully purified from water, and there are very few works on monitoring antibiotics in water resources.…”

Creation of Databases for Systematization of Antibiotic Resistance Monitoring Results

“…Санитарногигиенический мониторинг, проводимый в разных регионах, показал наличие в водоемах большого спектра патогенных и условно-патогенных устойчивых к АБП микроорганизмоваэромонад, вибрионов, псевдомонад, многих видов энтеробактерий, клостридий и др. [8][9][10][11][12]. Взаимодействие устойчивых к АБП бактерий с автохтонной микрофлорой способствует селекции резистентных штаммов и преобладанию устойчивых бактерий, приводящему к глобальному нарушению экосистемы [13][14][15][16][17].…”