Microbial selectivity of UV treatment on antibiotic-resistant heterotrophic bacteria in secondary effluents of a municipal wastewater treatment plant

Guo, Meiting; Yuan, Qiuyan; Yang, Jian

doi:10.1016/j.watres.2013.08.012

Cited by 122 publications

(56 citation statements)

References 30 publications

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“…All plates were incubated appropriately for 2-48 h. Colonies which developed on the plates were counted and recorded using colony forming unit per ml (Cfu/ml) of the sample using previous methods (Lateef et al, 2005;Guo et al, 2013;Hussain et al, 2013). Sub-culturing was carried out on distinct colonies until pure cultures were obtained and were transferred onto slant bottles containing freshly prepared agars.…”

Section: Microbial Analysismentioning

confidence: 99%

Microbial assessment and prevalence of antibiotic resistance in polluted Oluwa River, Nigeria

Ayandiran

Ayandele

Dahunsi

et al. 2014

Egyptian Journal of Aquatic Research

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Antibiotics are emerging environmental contaminants, causing both short-term and long-term alterations of natural microbial communities due to their high biological activities. The antibiotic resistance pattern of bacteria from anthropogenic polluted Oluwa River, Nigeria was carried out. Microbial profiling and antibiotic sensitivity tests were carried out on water and sediment samples using 13 different antibiotics. Microorganisms isolated include those in the genera Bacillus, Micrococcus, Pseudomonas, Streptococcus, Proteus and Staphylococcus. The microbial count of isolates from water samples ranged between 94.10 · 10 2 Cfu/100 ml and 156.20 · 10 2 Cfu/100 ml while that of sediment samples ranged from 2.55 · 10 4 Cfu g À1 to 14.30 · 10 4 Cfu g À1 . From the water isolates, 100% resistance to antibiotics was found in Micrococcus spp. and Pseudomonas spp. while another Micrococcus, Streptococcus, Staphylococcus and Bacillus spp. showed between 40% and 90% resistances. From the sediment isolates, 100% resistance to antibiotics was found in a Bacillus spp. and Pseudomonas spp. while another Bacillus, Micrococcus, Staphylococcus, Streptococcus and Proteus spp. showed between 70% and 90% resistances. Multiple antibiotic resistance (MAR) was shown by all the isolates and Bacillus, Micrococcus and Pseudomonas spp. showed the highest resistances (100%) to all antibiotics. Thus, Oluwa River is not safe for public consumption. ª 2014 Hosting by Elsevier B.V. on behalf of National Institute of Oceanography and Fisheries.

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Section: Microbial Analysismentioning

confidence: 99%

Microbial assessment and prevalence of antibiotic resistance in polluted Oluwa River, Nigeria

Ayandiran

Ayandele

Dahunsi

et al. 2014

Egyptian Journal of Aquatic Research

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“…Wastewater treatment processes generally achieve an obvious reduction in ARB numbers (Guardabassi et al, 2002;Huang et al, 2012;Guo et al, 2013a;Korzeniewska et al, 2013); however, reports state that conventional wastewater treatment does not reduce the fraction of ARB, leading, sometimes, to its increase in the final effluent (Bouki et al, 2013;Guo et al, 2013b;Biswal et al, 2014). Su et al (2014) found that percentage of E. coli resistant to 12 kinds of antibiotics all increased in the effluents of biological units.…”

Section: Introductionmentioning

confidence: 99%

Insights into the amplification of bacterial resistance to erythromycin in activated sludge

2015

Self Cite

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“…For example, a recent study found that although combined UV and chlorination disinfection significantly reduced bacterial abundance, the percentage of the resistant bacteria, relative abundance of multidrug-resistant strains, and the detection rate of plasmidmediated ARGs actually increased [84]. Other recent study found that UV disinfection led to enrichment of sulfadiazine-, vancomycin-, rifampicin-, tetracycline-, and chloramphenicol-resistant bacteria but reduction of isolates resistant to cephalexin, erythromycin, gentamicin, and ciprofloxacin, suggesting that the specific AR mechanisms may play a role in UV resistance either directly or through linkage to UV resistance mechanisms [85]. McKinney and Pruden investigated the potential of UV disinfection to damage four ARGs, mec(A), van(A), tet(A), and amp(C), in extracellular form and within the model bacterial pathogens -methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium (VRE), E. coli SMS-3-5, and Pseudomonas aeruginosa 01 [86].…”

Section: Impact Of Disinfection Processes On Arb and Arg Abundancementioning

confidence: 91%

Antibiotic Resistance Elements in Wastewater Treatment Plants: Scope and Potential Impacts

Gatica

Kaplan

Cytryn

2015

The Handbook of Environmental Chemistry

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Antibiotic resistance is considered to be one of the most significant public health concerns of the twenty-first century. Although traditionally the propagation of antibiotic resistance was considered to be limited to hospitals and other clinical environments, there is a growing realization that it is also associated with anthropogenically impacted environmental reservoirs. Wastewater treatment plants are considered to be significant reservoirs of antibiotic resistance because they combine extremely high levels of fecal-and environmental-derived bacteria with residual concentrations of antibiotic compounds believed to induce selection. These bacteria are primarily congregated in dense biofilms that are "hot spots" for horizontal gene transfer, which can facilitate inter-and intraspecies transfer of antibiotic genes, potentially resulting in the development of multidrug-resistant strains. Several studies have demonstrated that although wastewater treatment plants significantly reduce bacterial concentrations, relatively high levels of antibiotic-resistant bacteria and resistance genes are still present in effluents released to aquatic and soil environments and that under certain circumstances these resistance elements may persist for long periods of time in downstream

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Microbial selectivity of UV treatment on antibiotic-resistant heterotrophic bacteria in secondary effluents of a municipal wastewater treatment plant

Cited by 122 publications

References 30 publications

Microbial assessment and prevalence of antibiotic resistance in polluted Oluwa River, Nigeria

Microbial assessment and prevalence of antibiotic resistance in polluted Oluwa River, Nigeria

Insights into the amplification of bacterial resistance to erythromycin in activated sludge

Antibiotic Resistance Elements in Wastewater Treatment Plants: Scope and Potential Impacts

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