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Congilosi JL, Aga DS. Review on the fate of antimicrobials, antimicrobial resistance genes, and other micropollutants in manure during enhanced anaerobic digestion and composting. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:123634. [PMID: 33153790 DOI: 10.1016/j.jhazmat.2020.123634] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/01/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
While manure has been used as nutrient-rich fertilizer for centuries, anaerobic digestion (AD) of manure has only been recognized recently as a promising renewable energy source for producing methane-rich biogas. Various forms of AD have been evaluated for the removal of manure contaminants, such as antimicrobials, antimicrobial resistance genes (ARGs), hormones, and pesticides that pose risks to human health and the environment. Increasing demand for cleaner energy prompts examination of the fate of manure contaminants in conventional and advanced AD techniques. This review reveals that removal of contaminants differs based on type (e.g. antimicrobials vs hormones) or class (e.g. tetracyclines vs sulfonamides) of chemicals being treated. Increasingly, pre-treatment techniques are incorporated into AD systems to enhance biogas production and degrade manure contaminants. For instance, activated carbon with microwave pretreatment removed 87-95% of ARGs. Advanced anaerobic digestion and solid-state anaerobic digestion reduced various ARGs associated with sulfonamides, macrolides, and tetracyclines. Further, total hormone reduction improved using high-temperature pretreatment prior to mesophilic AD. Finally, several studies revealed partial removal of antimicrobials and ARGs during managed composting. Although AD can independently decrease manure contaminants prior to use as fertilizer, augmenting AD with composting and other physical treatment processes can further enhance their removal.
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Affiliation(s)
- Jena L Congilosi
- Chemistry Department, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Diana S Aga
- Chemistry Department, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
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Omulo S, Lofgren ET, Mugoh M, Alando M, Obiya J, Kipyegon K, Kikwai G, Gumbi W, Kariuki S, Call DR. The impact of fecal sample processing on prevalence estimates for antibiotic-resistant Escherichia coli. J Microbiol Methods 2017; 136:71-77. [PMID: 28323065 DOI: 10.1016/j.mimet.2017.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/15/2017] [Accepted: 03/15/2017] [Indexed: 10/19/2022]
Abstract
Investigators often rely on studies of Escherichia coli to characterize the burden of antibiotic resistance in a clinical or community setting. To determine if prevalence estimates for antibiotic resistance are sensitive to sample handling and interpretive criteria, we collected presumptive E. coli isolates (24 or 95 per stool sample) from a community in an urban informal settlement in Kenya. Isolates were tested for susceptibility to nine antibiotics using agar breakpoint assays and results were analyzed using generalized linear mixed models. We observed a <3-fold difference between prevalence estimates based on freshly isolated bacteria when compared to isolates collected from unprocessed fecal samples or fecal slurries that had been stored at 4°C for up to 7days. No time-dependence was evident (P>0.1). Prevalence estimates did not differ for five distinct E. coli colony morphologies on MacConkey agar plates (P>0.2). Successive re-plating of samples for up to five consecutive days had little to no impact on prevalence estimates. Finally, culturing E. coli under different conditions (with 5% CO2 or micro-aerobic) did not affect estimates of prevalence. For the conditions tested in these experiments, minor modifications in sample processing protocols are unlikely to bias estimates of the prevalence of antibiotic-resistance for fecal E. coli.
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Affiliation(s)
- Sylvia Omulo
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA, USA; Community Health Analytics Initiative, Washington State University, Pullman, WA, USA
| | - Eric T Lofgren
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA, USA; Community Health Analytics Initiative, Washington State University, Pullman, WA, USA
| | - Maina Mugoh
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Moshe Alando
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Joshua Obiya
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Korir Kipyegon
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Gilbert Kikwai
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Wilson Gumbi
- Center for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Samuel Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Douglas R Call
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA, USA; Community Health Analytics Initiative, Washington State University, Pullman, WA, USA; The Nelson Mandela African Institute for Science and Technology, Arusha, Tanzania.
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Volkova VV, KuKanich B, Riviere JE. Exploring Post-Treatment Reversion of Antimicrobial Resistance in Enteric Bacteria of Food Animals as a Resistance Mitigation Strategy. Foodborne Pathog Dis 2016; 13:610-617. [DOI: 10.1089/fpd.2016.2152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Victoriya V. Volkova
- Department of Diagnostic Medicine/Pathobiology, Institute of Computational Comparative Medicine, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
| | - Butch KuKanich
- Department of Anatomy and Physiology, Institute of Computational Comparative Medicine, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
| | - Jim E. Riviere
- Department of Anatomy and Physiology, Institute of Computational Comparative Medicine, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
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Simoneit C, Burow E, Tenhagen BA, Käsbohrer A. Oral administration of antimicrobials increase antimicrobial resistance in E. coli from chicken--a systematic review. Prev Vet Med 2014; 118:1-7. [PMID: 25433717 DOI: 10.1016/j.prevetmed.2014.11.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/20/2014] [Accepted: 11/11/2014] [Indexed: 11/26/2022]
Abstract
Antimicrobials play an important role in animal and human health care. It was the aim of this systematic review to assess the effects of oral administration of antimicrobials on the development of antimicrobial resistance (AMR) in Escherichia coli (E. coli) from chickens. Moreover, the effects of the administration of more than one antimicrobial and of different dosages were studied. Literature was searched in November 2012 from the electronic databases ISI Web of Science, PubMed, Scopus and a national literature database (DIMDI) as well as the database ProQuest LLC. The search was updated in March 2014. Original studies describing a treatment (A) and a control group of either non-treatment (C) or initial value (0) and determining AMR in E. coli at different sample points (SP) were included. The literature search resulted in 35 full text articles on the topic, seven (20%) of which contained sufficient information on the administered antimicrobial and the impact of treatment on AMR. Most papers described the use of more than one antimicrobial, several dosages, controls (non-treatment or pre-treatment) and measured AMR at different SPs leading to a total of 227 SPs on the impact of the use of antimicrobials on AMR in chickens. 74% of the SPs (168/227) described a higher AMR-rate in E. coli from treated animals than from controls. After the administration of a single antimicrobial, AMR increased at 72% of the SPs. Administration of more than one antimicrobial increased AMR at 82% of the SPs. Higher dosages were associated with similar or higher AMR rates. The limited number of studies for each antimicrobial agent and the high variability in the resistance effect call for more well designed studies on the impact of oral administration on AMR development and spread.
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Affiliation(s)
- C Simoneit
- Federal Institute for Risk Assessment, Department Biological Safety, Unit Epidemiology, Zoonoses and Antimicrobial Resistance, Diedersdorfer Weg 1, 12277 Berlin, Germany.
| | - E Burow
- Federal Institute for Risk Assessment, Department Biological Safety, Unit Epidemiology, Zoonoses and Antimicrobial Resistance, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - B-A Tenhagen
- Federal Institute for Risk Assessment, Department Biological Safety, Unit Epidemiology, Zoonoses and Antimicrobial Resistance, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - A Käsbohrer
- Federal Institute for Risk Assessment, Department Biological Safety, Unit Epidemiology, Zoonoses and Antimicrobial Resistance, Diedersdorfer Weg 1, 12277 Berlin, Germany
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Habing GG, Lo YJ, Kaneene JB. Changes in the antimicrobial resistance profiles of Salmonella isolated from the same Michigan dairy farms in 2000 and 2009. Food Res Int 2012. [DOI: 10.1016/j.foodres.2011.02.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Villarroel A, Morley PS, Wittum TE, Bolte DS. Use of a simulation model to evaluate sampling strategies for characterization of antimicrobial resistance in non–type-specificEscherichia coliisolated from dairy cows. Am J Vet Res 2006; 67:951-6. [PMID: 16740086 DOI: 10.2460/ajvr.67.6.951] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate various sampling strategies for potential use in measuring prevalence of antimicrobial susceptibility in cattle. SAMPLE POPULATION 500 isolates of non-type-specific Escherichia coli (NTSEC) isolated from the feces of 50 cows from 2 dairy farms (25 cows/farm and 10 isolates/cow). PROCEDURES Diameters of inhibition zones for 12 antimicrobials were analyzed to estimate variation among isolates, cows, and farms and then used to determine sampling distributions for a stochastic simulation model to evaluate 4 sampling strategies. These theoretic sampling strategies used a total of 100 isolates in 4 allocations (1 isolate from 100 cows, 2 isolates from 50 cows, 3 isolates from 33 cows, or 4 isolates from 25 cows). RESULTS Analysis of variance composition revealed that 74.2% of variation was attributable to isolates, 18.5% to cows, and 7.3% to farms. Analysis of results of simulations suggested that when most of the variance was attributable to differences among isolates within a cow, culturing 1 isolate from each of 100 cows underestimated overall prevalence, compared with results for culturing more isolates per cow from fewer cows. When variance was not primarily attributable to differences among isolates, all 4 sampling strategies yielded similar results. CONCLUSIONS AND CLINICAL RELEVANCE It is not always possible to predict the hierarchical level at which clustering will have its greatest impact on observed susceptibility distributions. Results suggested that sampling strategies that use testing of 3 or 4 isolates/cow from a representative sample of all animals better characterize herd prevalence of antimicrobial resistance when impacted by clustering.
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Affiliation(s)
- Aurora Villarroel
- Animal Population Health Institute, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1681, USA
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Jordan D, Morris SG, Gill P, Andersen LM, Chowdhury A, Stevenson AE, Spence SA. Mass screening for antimicrobial resistant Escherichia coli in dairy cows in northern New South Wales. Aust Vet J 2006; 83:688-94. [PMID: 16315669 DOI: 10.1111/j.1751-0813.2005.tb13051.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To describe aspects of the epidemiology of antimicrobial resistance in Escherichia coli shed in the faeces of milking cows in a dairying region of New South Wales. DESIGN A survey based on multi-stage sampling with repeated measures made within herds for estimating within-herd correlation of resistance status, and with repeated measures made on identical specimens for estimating test-retest reliability. PROCEDURE From a population of 110 dairy herds, 30 were selected at random and from each herd between 5 and 10 faecal specimens were obtained from fresh manure pats. E coli from faecal specimens were grown on hydrophobic grid membrane filters (HGMF) and replicated onto chromogenic agar and agar containing antimicrobials (gentamicin, ampicillin, tetracycline and sulfamethoxazole). Image analysis was used to assess colony growth. Data were analysed descriptively, by generalised linear mixed models and by Taylor series linearisation to account for attributes of the survey design. RESULTS Of the 10,279 E coli isolates assessed, 91% expressed no resistance, 7.3% were resistant to sulfamethoxazole, 3.6% to tetracycline, 2.2% to ampicillin and 0.09% to gentamicin. The most common multiple resistance phenotype was ampicillin-tetracycline-sulfamethoxazole (1.8% of isolates). Most multiple resistant isolates appeared clustered within particular herds but were too rare to obtain valid estimates of variance, confidence intervals or intra-herd correlation. The estimated proportion of isolates in the population that were susceptible to all four antimicrobials was 97% (95% CI: 91% to 100%) and 55% of cows had no resistance detected in faecal E coli (95% CI: 27% to 83%). Within-herd correlation of shedding status (any resistance pattern) was absent and test-retest reliability of the measurement system was estimated to be at the lower end of good (0.40) but increased to excellent (0.89) after excluding sulfamethoxazole resistance, which had a greater measurement error. CONCLUSION Antimicrobial resistance was uncommon in E coli in the population of dairy cows studied. HGMF and image analysis is an effective tool for detecting rare forms of resistant E coli that are not uniformly distributed in livestock populations.
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Affiliation(s)
- D Jordan
- Wollongbar Agricultural Institute, New South Wales Department of Primary Industries, 1243 Bruxner Highway, Wollongbar, New South Wales 2477
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