Accumulation of antibiotic resistance genes in full-scale drinking water biological activated carbon (BAC) filters during backwash cycles

Wan, Kun; Guo, Lizheng; Ye, Chengsong; Zhu, Jianwen; Zhang, Menglu; Yu, Xin

doi:10.1016/j.watres.2020.116744

Cited by 34 publications

(12 citation statements)

References 74 publications

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“…Hyphomicrobium and Bryobacter are tolerant to antibiotics [ 31 , 32 ]. Novosphingobium degrades aromatic compounds [ 33 ]. and Pseudomonas are reported as an aerobic denitrifying bacterium [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of tetracycline on nitrogen removal in Moving Bed Biofilm Reactor (MBBR) System

Yan

2022

PLoS ONE

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The effect of tetracycline (TC) on nitrogen removal in wastewater treatment plants has become a new problem. This study investigated the effects of TC on nitrogen removal using a Moving Bed Biofilm Reactor system. The results showed that there was no significant effect on nitrogen removal performance when the concentration of TC was 5 mg/L, and that the total nitrogen (TN) removal efficiency could reach 75–77%. However, when the concentration of TC increased to 10 mg/L, the denitrification performance was affected and the TN removal efficiency decreased to 58%. The abundance of denitrifying bacteria such as those in the genus Thauera decreased, and TC-resistant bacteria gradually became dominant. At a TC concentration of 10 mg/L, there were also increases and decreases, respectively, in the abundance of resistance and denitrification functional genes. The inhibitory effect of TC on denitrification was achieved mainly by the inhibition of nitrite-reducing bacteria.

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Section: Resultsmentioning

confidence: 99%

Effect of tetracycline on nitrogen removal in Moving Bed Biofilm Reactor (MBBR) System

Yan

2022

PLoS ONE

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“…Several reports have shown that biological activated carbon increases the abundance of ARGs (Table 1) [10,11,69,83,84]. This has been associated with the adhesion of bacteria to the filter surface, formation of biofilms, and consequent horizontal gene transfer [83,85].…”

Section: Inefficient Antibiotic Arb and Arb Removal By Water Treatmen...mentioning

confidence: 99%

Antibiotic Resistance in the Drinking Water: Old and New Strategies to Remove Antibiotics, Resistant Bacteria, and Resistance Genes

et al. 2022

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Bacterial resistance is a naturally occurring process. However, bacterial antibiotic resistance has emerged as a major public health problem in recent years. The accumulation of antibiotics in the environment, including in wastewaters and drinking water, has contributed to the development of antibiotic resistant bacteria and the dissemination of antibiotic resistance genes (ARGs). Such can be justified by the growing consumption of antibiotics and their inadequate elimination. The conventional water treatments are ineffective in promoting the complete elimination of antibiotics and bacteria, mainly in removing ARGs. Therefore, ARGs can be horizontally transferred to other microorganisms within the aquatic environment, thus promoting the dissemination of antibiotic resistance. In this review, we discuss the efficiency of conventional water treatment processes in removing agents that can spread/stimulate the development of antibiotic resistance and the promising strategies for water remediation, mainly those based on nanotechnology and microalgae. Despite the potential of some of these approaches, the elimination of ARGs remains a challenge that requires further research. Moreover, the development of new processes must avoid the release of new contaminants for the environment, such as the chemicals resulting from nanomaterials synthesis, and consider the utilization of green and eco-friendly alternatives such as biogenic nanomaterials and microalgae-based technologies.

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“…Among them, eleven genera were newly detected across all the three niches, most of which had been reported to be associated with infection or inflammation process. For instance, Ruminococcus and Escherichia-Shigella were detected in the inflammatory gut (Hall et al, 2017;Zhang et al, 2020), Peptoniphilus was detected in postoperative infected lesions in the oral cavity (Cho et al, 2015), Gardnerella was found to be associated with biofilm formation and bacterial vaginitis (Machado and Cerca, 2015), Flavobacterium and Weissella were thought to be opportunistic pathogens for bacteremia (Kamboj et al, 2015;Park and Ryoo, 2016), and Bryobacter was found to be associated with the accumulation of antibiotic resistance genes in vitro (Wan et al, 2021).…”

Section: Relationship Between Oral Microbiota and Tonsil Surface Microbiotamentioning

confidence: 99%

A Correlation Study of the Microbiota Between Oral Cavity and Tonsils in Children With Tonsillar Hypertrophy

Tian

Shi

et al. 2022

Front. Cell. Infect. Microbiol.

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Tonsillar hypertrophy is a common disease in 3-to-6-year-old children, which may cause serve symptoms like airway obstruction. Microbiological factors play an important role in the etiology of tonsillar hypertrophy. As the starting point of digestive and respiratory tracts, the microbial composition of the oral cavity is not only unique but also closely related to the resident microbiota in other body sites. Here we reported a correlation study of the microbiota between oral cavity and tonsils in children with tonsillar hypertrophy. Saliva, supragingival plaque, and wiped samples from the tonsil surface were collected from both tonsillar hypertrophy patients and participants with healthy tonsils and were then analyzed using Illumina Miseq Sequencing of the 16S rRNA gene. In the tonsillar hypertrophic state, more genera were detected on the tonsil surface than in the tonsil parenchyma, with more intra-microbiota correlations. When tonsillar hypertrophy occurred, both the oral cavity and tonsil surface endured microbiome shift with increased genera category and more active bacterial interactions. Over half of the newly detected genera from the tonsillar hypertrophic state were associated with infection and inflammation process or exhibited antibiotic-resistant characters. Of each individual, the microbial composition and structure of saliva seemed more similar to that of the tonsil surface, compared with the supragingival plaque. In salivary microbiota, genus Johnsonella might be relative with the healthy state of tonsils, while Pseudoxanthomonas might be relative with tonsillar hypertrophy. Our study supported the link between oral microbiota with the healthy and hypertrophic states of tonsils and may provide new directions for future researches in the specific role of oral microbiota in the etiology of tonsil diseases.

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Accumulation of antibiotic resistance genes in full-scale drinking water biological activated carbon (BAC) filters during backwash cycles

Cited by 34 publications

References 74 publications

Effect of tetracycline on nitrogen removal in Moving Bed Biofilm Reactor (MBBR) System

Effect of tetracycline on nitrogen removal in Moving Bed Biofilm Reactor (MBBR) System

Antibiotic Resistance in the Drinking Water: Old and New Strategies to Remove Antibiotics, Resistant Bacteria, and Resistance Genes

A Correlation Study of the Microbiota Between Oral Cavity and Tonsils in Children With Tonsillar Hypertrophy

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