Chlorine and antibiotic-resistant bacilli isolated from an effluent treatment plant

Martins, Suzana Cláudia Silveira; Faheina, Genilton da Silva; Machado, Bárbara de Melo; Martins, Claudia Miranda

doi:10.4025/actascitechnol.v35i1.12951

Cited by 2 publications

(1 citation statement)

References 34 publications

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“…Biofilm development occurs because biodegradable organic material (BOM) and inorganic nutrients are present in finished drinking water. Antibiotic resistant microorganisms in drinking water has been demonstrated in many studies [11,12,13,14,15,16,17] which is important in public health, it is important because of the ability of these microorganisms to transmit resistance to other organisms by means of transmissible resistance factors (R-factor) [18,19,20,21]. Khaber river is the major source of domestic water supply to Zakho city, Municipal potable water supplies are chlorinated to provide a residual concentration of 1.4 ppm.…”

Section: Introductionmentioning

confidence: 99%

Assessment of chlorine resistant bacteria and their susceptibility to antibiotic from water distribution system in Duhok province

Al-Berfkani¹,

Zubair²,

Bayazed³

2014

J App Biol Biotech

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Chlorination has been most widely practiced method of disinfection for potable waters since the turn of century and principal means by which the microbial quality of water is maintained in Iraq. Khabur river is the main source of our drinking water in Zahko-Duhok city, here chlorine in form of hypochlorous at concentration 2 ppm are most used. In this paper we have attempted to compare sensitivity of microorganisms toward chlorine and also we have tried to determination of chlorine resistance bacteria to antibiotics. Results from our experiment suggest that bacteria isolated from post chlorinated water samples are more resistant to chlorine disinfection than prechlorinated water samples. the isolated organisms are Staphylococcus aureus, Micrococcus varians and Aeromonas hydrophila fully resistant to chlorine at this concentration and the most resistant bacterium of all isolates is Staphylococci. Although the strains were sensitive to abroad spectrum of antibiotics but the strains show resistant to the most important clinical antibiotics. Suggestion that either the synthesis of unique proteins or aggregation of the bacteria as mechanisms of resistance to inactivation. This study will help us to suggest relevant changes in purification processes for supply of better quality of drinking water to our Municipal Corporation.

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Section: Introductionmentioning

confidence: 99%

Assessment of chlorine resistant bacteria and their susceptibility to antibiotic from water distribution system in Duhok province

Al-Berfkani¹,

Zubair²,

Bayazed³

2014

J App Biol Biotech

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Does Chlorination Promote Antimicrobial Resistance in Waterborne Pathogens? Mechanistic Insight into Co-Resistance and Its Implication for Public Health

Adefisoye

Olaniran

2022

Antibiotics

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Chemical agents including chlorine and antibiotics are used extensively to control infectious microorganisms. While antibiotics are mainly used to treat bacterial infections, chlorine is widely used for microbial inactivation in the post-secondary disinfection steps of water treatment. The extensive use of these agents has been acknowledged as a driving force for the expansion of antimicrobial resistance (AMR) and has prompted discourse on their roles in the evolution and proliferation of resistant pathogens in the aquatic milieus. We live in a possible “post-antibiotic” era when resistant microbes spread at startling levels with dire predictions relating to a potential lack of effective therapeutic antibacterial drugs. There have been reports of enhancement of resistance among some waterborne pathogens due to chlorination. In this context, it is pertinent to investigate the various factors and mechanisms underlying the emergence and spread of resistance and the possible association between chlorination and AMR. We, therefore, reflect on the specifics of bacterial resistance development, the mechanisms of intrinsic and acquired resistance with emphasis on their environmental and public health implications, the co-selection for antibiotic resistance due to chlorination, biofilm microbiology, and multidrug efflux activity. In-depth knowledge of the molecular basis of resistance development in bacteria will significantly contribute to the more rational utilization of these biocidal agents and aid in filling identified knowledge gap toward curbing resistance expansion.

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Chlorine and antibiotic-resistant bacilli isolated from an effluent treatment plant

Cited by 2 publications

References 34 publications

Assessment of chlorine resistant bacteria and their susceptibility to antibiotic from water distribution system in Duhok province

Assessment of chlorine resistant bacteria and their susceptibility to antibiotic from water distribution system in Duhok province

Does Chlorination Promote Antimicrobial Resistance in Waterborne Pathogens? Mechanistic Insight into Co-Resistance and Its Implication for Public Health

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