101
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Mukota AK, Gondam MFK, Tsafack JJT, Sasanya J, Reybroeck W, Ntale M, Nyanzi SA, Tebandeke E. Primary validation of Charm II tests for the detection of antimicrobial residues in a range of aquaculture fish. BMC Chem 2020; 14:32. [PMID: 32352083 PMCID: PMC7183640 DOI: 10.1186/s13065-020-00684-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/09/2020] [Indexed: 11/20/2022] Open
Abstract
The study carried out a primary validation of Charm II tests for the detection of antimicrobial residues in aquaculture fish. The validation was performed according to European Commission Decision 2002/657/EC and the parameters determined included: detection capability, repeatability, reproducibility, specificity and robustness for the detection of antimicrobial residues in fish. Fish materials from different species including cat fish, trout, salmon, sea bass, tilapia, lingue and pangasius, were spiked with varying concentrations of selected antimicrobials including sulfonamides, β-lactams, macrolides, tetracyclines and aminoglycosides to determine the detection capabilities and other validation parameters of the Charm II tests. Results of the validation showed that the detection capabilities for the tetracyclines ranged from 25 to 100 µg/kg, while the sulfonamides and aminoglycosides were detected at 25 µg/kg for all species under study. The detection capabilities for the beta-lactams ranged from 25 to 300 µg/kg; and was 100 µg/kg for the tested macrolides. Results of the study showed that there was no significant difference between counts for samples read immediately after addition of the scintillation liquid and those read 14 h after addition of the scintillation liquid, provided that there was good vortexing before analysis. There was also no significant difference between counts for the same samples analyzed in different runs under repeatability and reproducibility conditions at the same spiking concentrations for the different fish species analyzed. The relative standard deviation for both repeatability and reproducibility ranged from 1.2 to 15.1%. The Charm II tests were found to be 100% group specific, as none of the antimicrobials kits, gave false positive results when testing non-target antimicrobial drugs. Results of this study demonstrate the suitability of the Charm II technique as a rapid screening tool for detection of antimicrobial residues in a variety of fish species at maximum residue limits (MRL) established in the EU guidelines, with the exception of tilmicosin which was detected at 2 MRL. The results also prove the robustness, specificity, reliability and precision of the Charm II assay in the detection of various antimicrobial residuals in fish and its applicability for the rapid evaluation of the quality of aquaculture fish for safety and trade purposes.
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Affiliation(s)
- Aziz Kimera Mukota
- Uganda National Bureau of Standards, Headquarters. Plot 2-12 Bypass Link, Industrial & Business Park, Kyaliwajala Road, P.O. Box 6329, Kampala, Uganda
| | | | | | - James Sasanya
- 3International Atomic Energy Agency (IAEA), Vienna International Centre, P. O. Box 100, 1400 Vienna, Austria
| | - Wim Reybroeck
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Technology and Food Science Unit, Brusselsesteenweg 370, 9090 Melle, Belgium
| | - Muhammad Ntale
- 5Department of Chemistry, College of Natural Sciences, Makerere University, P.O. Box, 7062, Kampala, Uganda
| | - Steven Allan Nyanzi
- 5Department of Chemistry, College of Natural Sciences, Makerere University, P.O. Box, 7062, Kampala, Uganda
| | - Emmanuel Tebandeke
- 5Department of Chemistry, College of Natural Sciences, Makerere University, P.O. Box, 7062, Kampala, Uganda
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102
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Rashid A, Mazhar SH, Zeng Q, Kiki C, Yu CP, Sun Q. Simultaneous analysis of multiclass antibiotic residues in complex environmental matrices by liquid chromatography with tandem quadrupole mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1145:122103. [PMID: 32305705 DOI: 10.1016/j.jchromb.2020.122103] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 01/08/2023]
Abstract
A simultaneous extraction and cleanup method was optimized and validated for the determination of 40 antibiotics from cephalosporin, fluoroquinolone, lincosamide, macrolide, nitroimidazole, quinolone, sulfonamide and tetracycline groups in sediments by liquid chromatography with tandem quadrupole mass spectrometry (LC-MS/MS). The method involved hydration of freeze-dried sediment sample (2.0 g) with 2.5 ml of 0.1 M Na-EDTA McIlvaine buffer and extraction with 5 ml of MeOH and MeCN (1:3 v/v) followed by dispersive solid phase extraction by using 100 mg mix of C18 and PSA (1:2 w/w) and 50 mg MgSO4 prior to LC-MS/MS analysis. The method was validated for 10, 20, 50 and 100 µg/kg spiking levels by using blank sediment sample obtained from a drinking water reservoir according to the guidelines of European Commission Decision (2002) 2002/657/EC. The method produced clean extracts with generally low matrix effect during LC-MS/MS analysis. The mean recoveries ranged between 24-162%, 48-151%, 51-159%, and 50-149% for 10, 20, 50 and 100 µg/kg spiking levels, respectively, with acceptable precision. The analytical method was sensitive enough to achieve 0.01-34.3 µg/kg and 0.03-115 µg/kg limits of detection and quantitation, respectively. The scope of the method was demonstrated by analyzing complex solid environmental matrices (chicken manure, swine manure, poultry feed and soil) spiked at 10, 20, 50 and 100 µg/kg levels. The method was also applied for the antibiotic analysis in samples with incurred residues. Different matrices in the order of the magnitude as sediments < poultry feed < swine manure < soil < chicken manure were detected with the residues of fluoroquinolone, macrolide, sulfonamide and tetracycline antibiotics.
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Affiliation(s)
- Azhar Rashid
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Nuclear Institute for Food and Agriculture (PAEC), Tarnab, Peshawar 25000, Pakistan.
| | - Sohaib H Mazhar
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qiaoting Zeng
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Claude Kiki
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100043, China
| | - Chang-Ping Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Qian Sun
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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103
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Mileva R, Subev S, Gehring R, Milanova A. Oral doxycycline pharmacokinetics: Lambs in comparison with sheep. J Vet Pharmacol Ther 2020; 43:268-275. [PMID: 32232862 DOI: 10.1111/jvp.12859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/27/2020] [Accepted: 03/09/2020] [Indexed: 01/20/2023]
Abstract
The pharmacokinetics of doxycycline was investigated in lactating sheep and lambs after oral administration at a dose of 10 mg/kg. Concentrations in plasma and milk were assayed with HPLC-PDA analysis. Doxycycline penetrates into the milk, and levels (0.38 ± 0.21 μg/ml) were found 0.5 hr after the treatment. The results suggest that the lambs can be exposed to doxycycline by suckling milk from their treated mothers. Population pharmacokinetic analysis showed a positive relationship between age, which reflects the stage of development of rumen function, and clearance. Possible explanations for the observed differences include the undeveloped rumen in lambs, the differences in the feed and liver function as evidenced by the blood biochemical parameters aspartate aminotransferase (AST) and alanine aminotransferase (ALT), which were significantly lower in lambs (62.67 ± 27.83 U/L and 8.50 ± 6.80 U/L) than in sheep (114.33 ± 20.77 U/L and 18.00 ± 3.16 U/L).
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Affiliation(s)
- Rositsa Mileva
- Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Sasho Subev
- Department of Internal Noninfectious Diseases, Faculty of veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Ronette Gehring
- Division of Veterinary Pharmacotherapy and Pharmacy, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Aneliya Milanova
- Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
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104
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Bagnis S, Boxall A, Gachanja A, Fitzsimons M, Murigi M, Snape J, Tappin A, Wilkinson J, Comber S. Characterization of the Nairobi River catchment impact zone and occurrence of pharmaceuticals: Implications for an impact zone inclusive environmental risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:134925. [PMID: 31726303 DOI: 10.1016/j.scitotenv.2019.134925] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/09/2019] [Accepted: 10/09/2019] [Indexed: 05/25/2023]
Abstract
The largely uncontrolled release of active pharmaceuticals ingredients (APIs) within untreated wastewater discharged to waterbodies, associated with many rapidly urbanising centres is of growing concern owing to potential antimicrobial resistance, endocrine disruption and potential toxicity. A sampling campaign has been undertaken to assess the source, occurrence, magnitude and risk associated with APIs and other chemicals within the Nairobi/Athi river basin, in Kenya, East Africa. The catchment showed an extensive downstream impact zone estimated to extend 75 km, mostly, but not exclusively, derived from the direct discharge of untreated wastewater from the urban centre of Nairobi city. The exact extent of the downstream boundary of the Nairobi city impact zone was unclear owing to the inputs of untreated wastewater sources from the continuous urbanized areas along the river, which counteracted the natural attenuation caused by dilution and degradation. The most frequently detected APIs and chemicals were caffeine, carbamazepine, trimethoprim, nicotine, and sulfamethoxazole. Paracetamol, caffeine, sulfamethoxazole, and trimethoprim alone contributed 86% of the total amount of APIs determined along the Nairobi/Athi catchment. In addition to direct discharge of untreated domestic wastewater attributed to the informal settlements within the conurbation, other sources were linked to the industrial area in Nairobi City where drug formulation is known to occur, the Dandora landfill and veterinary medicines from upstream agriculture. It was shown that there was a possible environmental risk of API ecotoxicological effects beyond the end of the traditional impact zone defined by elevated biochemical oxygen demand concentrations; with metronidazole and sulfamethoxazole exhibiting the highest risk.
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Affiliation(s)
- Simone Bagnis
- School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth PL4 8AA, UK
| | - Alistair Boxall
- Department of Environment and Geography, University of York, Heslington, York YO10 5NG, UK
| | - Antony Gachanja
- Department of Chemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Mark Fitzsimons
- School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth PL4 8AA, UK
| | - Martin Murigi
- Department of Chemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Jason Snape
- AstraZeneca UK, Global Safety, Health and Environment, Macclesfield, UK; School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry CV4 7AL, UK
| | - Alan Tappin
- School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth PL4 8AA, UK
| | - John Wilkinson
- Department of Environment and Geography, University of York, Heslington, York YO10 5NG, UK
| | - Sean Comber
- School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth PL4 8AA, UK.
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105
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Gopal G, Alex SA, Chandrasekaran N, Mukherjee A. A review on tetracycline removal from aqueous systems by advanced treatment techniques. RSC Adv 2020; 10:27081-27095. [PMID: 35515769 PMCID: PMC9055545 DOI: 10.1039/d0ra04264a] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022] Open
Abstract
Tetracycline occurrence and advanced treatment techniques.
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Affiliation(s)
- Geetha Gopal
- Centre for Nanobiotechnology
- VIT
- Vellore 632014
- India
| | - Sruthi Ann Alex
- Centre for Nano Science and Technology
- Anna University
- Chennai
- India
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106
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Pinheiro PC, Fateixa S, Daniel-da-Silva AL, Trindade T. An integrated approach for trace detection of pollutants in water using polyelectrolyte functionalized magneto-plasmonic nanosorbents. Sci Rep 2019; 9:19647. [PMID: 31873152 PMCID: PMC6928026 DOI: 10.1038/s41598-019-56168-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 12/03/2019] [Indexed: 11/22/2022] Open
Abstract
Resistance of pathogenic micro-organisms to conventional antibiotics is an essential issue for public health. The presence of such pharmaceuticals in aquatic ecosystems has been of major concern for which remediation and ultra-sensitive monitoring methods have been proposed. A less explored strategy involves the application of multifunctional nanosorbents for the uptake and subsequent detection of vestigial contaminants. In this study, colloidal nanoparticles (NPs) of iron oxide and gold were encapsulated in multi-layers of a charged polyelectrolyte (PEI: polyethyleneimine), envisaging the effective capture of tetracycline (TC) and its subsequent detection by Surface Enhanced Raman Scattering (SERS). Adsorption studies were performed by varying operational parameters, such as the solution pH and contact time, in order to evaluate the performance of the nanosorbents for the uptake of TC from water. While the magnetic nanosorbents with an external PEI layer (Fe3O4@PEI and Fe3O4@PEI-Au@PEI particles) have shown better uptake efficiency for TC, these materials showed less SERS sensitivity than the Fe3O4@PEI- Au nanosorbents, whose SERS sensitivity for TC in water has reached the limit of detection of 10 nM. Thus, this study highlights the potential of such magneto-plasmonic nanosorbents as multi-functional platforms for targeting specific contaminants in water, by taking into consideration both functionalities investigated: the removal by adsorption and the SERS detection across the nanosorbents’ surfaces.
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Affiliation(s)
- Paula C Pinheiro
- Department of Chemistry - CICECO Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Sara Fateixa
- Department of Chemistry - CICECO Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Ana L Daniel-da-Silva
- Department of Chemistry - CICECO Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry - CICECO Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal.
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107
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Mahmoud MAM, Abdel-Mohsein HS. Hysterical tetracycline in intensive poultry farms accountable for substantial gene resistance, health and ecological risk in Egypt- manure and fish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113039. [PMID: 31521994 DOI: 10.1016/j.envpol.2019.113039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/05/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Although the poultry production sector plays a key role in sustaining the majority of animal protein demand in Egypt, the deleterious effects of widespread antibiotic resistance on health and environment are currently not well recognized. Litter and dropping samples from broiler and layer poultry farms as well as, tilapia samples from the Nile River and aquaculture farms were collected from Upper Egypt. Samples were extracted and examined for tetracycline residues [tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC) and doxycycline (DC)] using HPLC. In addition, tetracycline resistance genes [tet (M), tet (W), tet (Q) and tet (G)] were screened from pooled intestinal contents collected from twelve broiler farms in Upper Egypt. The antibiotic resistance genes results revealed that tet (W) was confirmed to be expressed in all intestinal samples. In contrast, tet (Q) and tet (M) were detected only in 42% and 17% of the samples, respectively. CTC and OTC were the antimicrobial compounds with the highest concentrations in poultry litter and droppings, with concentrations of 6.05 and 2.47 μg g-1 (CTC) and 5.9 and 1.33 μg g-1 (OTC), respectively. However, the concentrations of DC were significantly higher than those of the other compounds in both aquaculture and Nile River tilapia. The tetracycline residue levels in aquaculture tilapia were significantly higher than those in Nile River tilapia. The hazard quotients (HQs) exceeded 1 for OTC, CTC and DC, which highlights the great risk of using broiler litter to fertilize agricultural land. Moreover, the presence of DC and CTC indicates that consumption of aquaculture tilapia poses a considerable health risk. Therefore, poultry litter or droppings containing tetracycline residues and tet resistance determinants used for aquaculture or as farmland fertilizers could be major sources of antibiotic resistance in fish, humans and environment.
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Affiliation(s)
- Manal A M Mahmoud
- Department of Animal, Poultry Hygiene and Environmental Sanitation, Faculty of Veterinary Medicine, Assiut University, 71526, Egypt.
| | - Hosnia S Abdel-Mohsein
- Department of Animal, Poultry Hygiene and Environmental Sanitation, Faculty of Veterinary Medicine, Assiut University, 71526, Egypt
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108
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Marques A, Veigas B, Araújo A, Pagará B, Baptista PV, Águas H, Martins R, Fortunato E. Paper-Based SERS Platform for One-Step Screening of Tetracycline in Milk. Sci Rep 2019; 9:17922. [PMID: 31784619 PMCID: PMC6884497 DOI: 10.1038/s41598-019-54380-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 11/08/2019] [Indexed: 11/09/2022] Open
Abstract
Throughout the last decade, the expansion of food testing has been gradually moving towards ordinary high throughput screening methods performed on-site. The demand for point-of-care testing, able to distinguish molecular signatures with high accuracy, sensitivity and specificity has been significantly increasing. This new requirement relies on the on-site detection and monitorization of molecular signatures suitable for the surveillance of food production and processing. The widespread use of antibiotics has contributed to disease control of livestock but has also created problems for the dairy industry and consumers. Its therapeutic and subtherapeutic use has increased the risk of contamination in milk in enough concentrations to cause economic losses to the dairy industry and have a health impact in highly sensitive individuals. This study focuses on the development of a simple Surface-Enhanced Raman Spectroscopy (SERS) method for fast high throughput screening of tetracycline (TET) in milk. For this, we integrate a paper-based low-cost, fully recyclable and highly stable SERS platform, with a minimal sample preparation protocol. A two-microliter sample of milk solutions spiked with TET (from 0.01 to 1000 ppm) is dried on a silver nanoparticle coated cardboard substrate and measured via a Raman spectrophotometer. The SERS substrate showed to be extremely stable with a shelf life of several months. A global spectrum principal component analysis approach was used to test all the detected vibrational modes and their correlation with TET concentration. Peak intensity ratios (455 cm-1/1280 cm-1 and 874 cm-1/1397 cm-1) were found to be correlated with TET concentrations in milk, achieving a sensitivity as low as 0.1 ppm. Results indicate that this SERS method combined with portable Raman spectrometer is a potential tool that can be used on-site for the monitoring of TET residues and other antibiotics.
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Affiliation(s)
- Ana Marques
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Bruno Veigas
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Andreia Araújo
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
- INCM, Imprensa Nacional Casa da Moeda, Lisboa, Portugal
| | - Beatriz Pagará
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Pedro Viana Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Hugo Águas
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Rodrigo Martins
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Elvira Fortunato
- i3N|CENIMAT, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal.
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109
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An aptamer cocktail-based electrochemical aptasensor for direct capture and rapid detection of tetracycline in honey. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104179] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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110
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Detection and determination of stability of the antibiotic residues in cow's milk. PLoS One 2019; 14:e0223475. [PMID: 31600289 PMCID: PMC6786530 DOI: 10.1371/journal.pone.0223475] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 09/11/2019] [Indexed: 12/26/2022] Open
Abstract
In the present study, antibiotic residues were detected in milk samples collected from the dairy herds located in Karnataka, India, by microbiological assay. Subsequently, the detected antibiotics were identified as azithromycin and tetracycline, by high-performance liquid chromatography, further both the antibiotics detected in the cow milk samples were found to be at high concentration (9708.7 and 5460 μg kg-1, respectively). We then investigated the effects of temperature and pH on the stabilities of azithromycin and tetracycline to determine the degradation rate constant k using first-order kinetic equation. Results indicated that significant reduction in stability and antibacterial activity of azithromycin solution when subjected to 70 and 100°C for 24 h. While stability of tetracycline was significantly reduced when subjected to 70 and 100°C for 24 h. However no significant reduction in antibacterial activity of tetracycline was observed at respective temperatures when compared with that of control. In addition, the stabilities of azithromycin and tetracycline were found to be decreased in acidic pH 4–5. The results of the present study revealed the high risk of contamination of milk sample with veterinary antibiotics and also demonstrated the effect of temperature and pH on stability of antibiotics. Therefore the study suggest that the qualitative and quantitative screening of milk for the presence of antibiotics need to be strictly performed to ensure safe drinking milk for consumers.
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111
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Kasumba J, Appala K, Agga GE, Loughrin JH, Conte ED. Anaerobic digestion of livestock and poultry manures spiked with tetracycline antibiotics. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:135-147. [PMID: 31554464 DOI: 10.1080/03601234.2019.1667190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We investigated the anaerobic degradation of tetracycline antibiotics (tetracycline [TC], oxytetracycline [OTC] and chlortetracycline [CTC]) in swine, cattle, and poultry manures. The manures were anaerobically digested inside polyvinyl chloride batch reactors for 64 days at room temperature. The degradation rate constants and half-lives of the parent tetracyclines were determined following first-order kinetics. For CTC the fastest degradation rate was observed in swine manure (k = 0.016 ± 0.001 d-1; half-life = 42.8 days), while the slowest degradation rate was observed in poultry litter (k = 0.0043 ± 0.001 d-1; half-life = 161 days). The half-lives of OTC ranged between 88.9 (cattle manure) and 99.0 days (poultry litter), while TC persisted the longest of the tetracycline antibiotics studied with half-lives ranging from 92.4 days (cattle manure) to 330 days (swine manure). In general, the tetracyclines were found to degrade faster in cattle manure, which had the lowest concentrations of organic matter and metals as compared to swine and poultry manures. Our results demonstrate that tetracycline antibiotics persist in the animal manure after anaerobic digestion, which can potentially lead to emergence and persistence of antibiotic resistant bacteria in the environment when anaerobic digestion byproducts are land applied for crop production.
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Affiliation(s)
- John Kasumba
- Department of Chemistry, Western Kentucky University, Bowling Green, KY, USA
| | - Keerthi Appala
- Department of Chemistry, Western Kentucky University, Bowling Green, KY, USA
| | - Getahun E Agga
- Food Animal Environmental Systems Research, USDA-ARS, Bowling Green, KY, USA
| | - John H Loughrin
- Food Animal Environmental Systems Research, USDA-ARS, Bowling Green, KY, USA
| | - Eric D Conte
- Department of Chemistry, Western Kentucky University, Bowling Green, KY, USA
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112
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Gauglitz JM, Aceves CM, Aksenov AA, Aleti G, Almaliti J, Bouslimani A, Brown EA, Campeau A, Caraballo-Rodríguez AM, Chaar R, da Silva RR, Demko AM, Di Ottavio F, Elijah E, Ernst M, Ferguson LP, Holmes X, Jarmusch AK, Jiang L, Kang KB, Koester I, Kwan B, Li J, Li Y, Melnik AV, Molina-Santiago C, Ni B, Oom AL, Panitchpakdi MW, Petras D, Quinn R, Sikora N, Spengler K, Teke B, Tripathi A, Ul-Hasan S, van der Hooft JJJ, Vargas F, Vrbanac A, Vu AQ, Wang SC, Weldon K, Wilson K, Wozniak JM, Yoon M, Bandeira N, Dorrestein PC. Untargeted mass spectrometry-based metabolomics approach unveils molecular changes in raw and processed foods and beverages. Food Chem 2019; 302:125290. [PMID: 31404873 DOI: 10.1016/j.foodchem.2019.125290] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/19/2019] [Accepted: 07/28/2019] [Indexed: 10/26/2022]
Abstract
In our daily lives, we consume foods that have been transported, stored, prepared, cooked, or otherwise processed by ourselves or others. Food storage and preparation have drastic effects on the chemical composition of foods. Untargeted mass spectrometry analysis of food samples has the potential to increase our chemical understanding of these processes by detecting a broad spectrum of chemicals. We performed a time-based analysis of the chemical changes in foods during common preparations, such as fermentation, brewing, and ripening, using untargeted mass spectrometry and molecular networking. The data analysis workflow presented implements an approach to study changes in food chemistry that can reveal global alterations in chemical profiles, identify changes in abundance, as well as identify specific chemicals and their transformation products. The data generated in this study are publicly available, enabling the replication and re-analysis of these data in isolation, and serve as a baseline dataset for future investigations.
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Affiliation(s)
- Julia M Gauglitz
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Center for Microbiome Innovation, University of California, San Diego, United States.
| | - Christine M Aceves
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Alexander A Aksenov
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Gajender Aleti
- Mammalian Genomics, J. Craig Venter Institute, San Diego, United States
| | - Jehad Almaliti
- Scripps Institution of Oceanography, University of California, San Diego, United States; Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman 11942, Jordan
| | - Amina Bouslimani
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Elizabeth A Brown
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Anaamika Campeau
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Department of Pharmacology, University of California, San Diego, United States
| | - Andrés Mauricio Caraballo-Rodríguez
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Rama Chaar
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Ricardo R da Silva
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Alyssa M Demko
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Francesca Di Ottavio
- Faculty of Bioscience and Technology for Food, Agriculture, and Environment, University of Teramo, TE, Italy
| | - Emmanuel Elijah
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Madeleine Ernst
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - L Paige Ferguson
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Xavier Holmes
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Alan K Jarmusch
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Lingjing Jiang
- Department of Family Medicine and Public Health, University of California, San Diego, United States
| | - Kyo Bin Kang
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Irina Koester
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Brian Kwan
- Department of Family Medicine and Public Health, University of California, San Diego, United States
| | - Jie Li
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Yueying Li
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Alexey V Melnik
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Center for Microbiome Innovation, University of California, San Diego, United States
| | - Carlos Molina-Santiago
- Departamento de Microbiología, Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga, Bulevar Louis Pasteur 31 (Campus Universitario de Teatinos), 29071 Málaga, Spain
| | - Bohan Ni
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Aaron L Oom
- Department of Medicine, University of California, San Diego, United States
| | - Morgan W Panitchpakdi
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Daniel Petras
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Center for Microbiome Innovation, University of California, San Diego, United States; Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Robert Quinn
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Nicole Sikora
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Katharina Spengler
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Bahar Teke
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Anupriya Tripathi
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Sabah Ul-Hasan
- School of Natural Sciences, University of California Merced, Merced, CA 95343, United States
| | - Justin J J van der Hooft
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Bioinformatics Group, Wageningen University, Wageningen, The Netherlands
| | - Fernando Vargas
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Division of Biological Sciences, University of California at San Diego, La Jolla, CA, United States
| | - Alison Vrbanac
- Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, CA, United States
| | - Anthony Q Vu
- Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, CA, United States
| | - Steven C Wang
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Division of Biological Sciences, University of California at San Diego, La Jolla, CA, United States
| | - Kelly Weldon
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Center for Microbiome Innovation, University of California, San Diego, United States
| | - Kayla Wilson
- Scripps Institution of Oceanography, University of California, San Diego, United States
| | - Jacob M Wozniak
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Department of Pharmacology, University of California, San Diego, United States
| | - Michael Yoon
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States
| | - Nuno Bandeira
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Department of Computer Science and Engineering, University of California, San Diego, United States
| | - Pieter C Dorrestein
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, United States; Departments of Pharmacology and Pediatrics, University of California, San Diego, United States.
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Leiva A, Méndez G, Rodríguez C, Molina A, Granados-Chinchilla F. Chemical assessment of mycotoxin contaminants and veterinary residues in Costa Rican animal feed. INTERNATIONAL JOURNAL OF FOOD CONTAMINATION 2019. [DOI: 10.1186/s40550-019-0075-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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114
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Choi JR, Yong KW, Choi JY, Cowie AC. Progress in Molecularly Imprinted Polymers for Biomedical Applications. Comb Chem High Throughput Screen 2019; 22:78-88. [DOI: 10.2174/1386207322666190325115526] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/25/2019] [Accepted: 03/05/2019] [Indexed: 01/07/2023]
Abstract
Background:
Molecularly Imprinted Polymers (MIPs), a type of biomimetic materials
have attracted considerable interest owing to their cost-effectiveness, good physiochemical
stability, favorable specificity and selectivity for target analytes, and long shelf life. These
materials are able to mimic natural recognition entities, including biological receptors and
antibodies, providing a versatile platform to achieve the desirable functionality for various
biomedical applications.
Objective:
In this review article, we introduce the most recent development of MIPs to date. We
first highlight the advantages of using MIPs for a broad range of biomedical applications. We then
review their various methods of synthesis along with their latest progress in biomedical
applications, including biosensing, drug delivery, cell imaging and drug discovery. Lastly, the
existing challenges and future perspectives of MIPs for biomedical applications are briefly
discussed.
Conclusion:
We envision that MIPs may be used as potential materials for diverse biomedical
applications in the near future.
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Affiliation(s)
- Jane Ru Choi
- Department of Mechanical Engineering, University of British Columbia, 2054–6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada
| | - Kar Wey Yong
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Jean Yu Choi
- Faculty of Medicine, University of Dundee, Dow Street, Dundee DD1 5EH, United Kingdom
| | - Alistair C. Cowie
- Faculty of Medicine, University of Dundee, Dow Street, Dundee DD1 5EH, United Kingdom
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115
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Besharati M, Hamedi J, Hosseinkhani S, Saber R. A novel electrochemical biosensor based on TetX2 monooxygenase immobilized on a nano-porous glassy carbon electrode for tetracycline residue detection. Bioelectrochemistry 2019; 128:66-73. [PMID: 30928867 DOI: 10.1016/j.bioelechem.2019.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 02/16/2019] [Accepted: 02/16/2019] [Indexed: 12/17/2022]
Abstract
Different carbon-based nanostructures were used to investigate direct electron transfer (DET) of TetX2 monooxygenase (TetX2), and an enzyme-based biosensor for sensitive determination of tetracycline (TC) also fabricated. A polyethyleneimine (PEI) with positive charge groups was used for immobilization of TetX2 on modified glassy carbon electrodes. Cyclic voltammetry (CV) was employed to study the electrochemical characteristics of the immobilized enzyme and the performance of the proposed biosensor. Amongst multiple carbon-modified electrodes, nano-porous glassy carbon electrode (NPGCE) was selected because of its amplified signal response for flavin adenine dinucleotide (FAD) and superior electrocatalytic behavior toward oxygen reduction. The cyclic voltammogram of PEI/TetX2/NPGCE showed two couple of well-defined and quasi-reversible redox peaks of FAD, consistent with the realization of DET. The prepared electrode was then successfully introduced as a biosensing interface based on the oxygen reduction peak current, resulting in a linear range response from 0.5 to 5 μM with a good detection limit of 18 nM. The as-fabricated electrode demonstrates a fast response and excellent stability for the detection of TC. The results indicate that this simple, rapid, eco-friendly and economic strategy of PEI/TetX2/NPGCE preparation has potential for the fabrication of an enzyme-based biosensor for the practical detection of TC in food products.
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Affiliation(s)
- Maryam Besharati
- Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, 14155-6455 Tehran, Iran; Microbial Technology and Products Research Center, University of Tehran, Tehran, Iran
| | - Javad Hamedi
- Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, 14155-6455 Tehran, Iran; Microbial Technology and Products Research Center, University of Tehran, Tehran, Iran.
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Reza Saber
- Research Center of Medical Science, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
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116
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Ghanbari M, Klose V, Crispie F, Cotter PD. The dynamics of the antibiotic resistome in the feces of freshly weaned pigs following therapeutic administration of oxytetracycline. Sci Rep 2019; 9:4062. [PMID: 30858509 PMCID: PMC6411716 DOI: 10.1038/s41598-019-40496-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 02/18/2019] [Indexed: 01/02/2023] Open
Abstract
In this study, shotgun metagenomics was employed to monitor the effect of oxytetracycline, administered at a therapeutic dose, on the dynamics of the microbiota and resistome in the feces of weaned pigs. Sixteen weaning pigs were assigned to one of two treatments including standard starter diet for 21 days or antibiotic-supplemented diet (10 g oxytetracycline/100 kg body weight/day) for 7 days, followed by 14 days of standard starter diet. Feces were collected from the pigs on days 0, 8, and 21 for microbiota and resistome profiling. Pigs receiving oxytetracycline exhibited a significantly greater richness (ANOVA, P = 0.034) and diversity (ANOVA, P = 0.048) of antibiotic resistance genes (ARGs) than the control pigs. Antibiotic administration significantly enriched the abundances of 41 ARGs, mainly from the tetracycline, betalactam and multidrug resistance classes. Compositional shifts in the bacterial communities were observed following 7 days of antibiotic adminstration, with the medicated pigs showing an increase in Escherichia (Proteobacteria) and Prevotella (Bacteroidetes) populations compared with the nonmedicated pigs. This might be explained by the potential of these taxa to carry ARGs that may be transferred to other susceptible bacteria in the densely populated gut environment. These findings will help in the optimization of therapeutic schemes involving antibiotic usage in swine production.
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Affiliation(s)
| | | | - Fiona Crispie
- Teagasc Food Research Centre, Moorepark, Fermoy, Cork, and APC Microbiome Ireland, Cork, Ireland
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, Cork, and APC Microbiome Ireland, Cork, Ireland
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117
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Li Y, Mohammed A, Li D, Wang L. Test strips based on iron(iii)-impregnated alginate/polyacrylonitrile nanofibers for naked eye screening of tetracycline. Analyst 2019; 143:3029-3039. [PMID: 29721556 DOI: 10.1039/c7an02038d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetracycline (TC) is an inexpensive broad-spectrum antibiotic used to treat infectious diseases and to promote growth in animals. However, driven by economic interest, abuse of TC poses a serious threat to human beings, and it remains a significant challenge to create easy-to-use TC colorimetric test strips for public use. Herein, we present a strategy to prepare free-standing, nanofibrous structured test strips with tortuous porous structure and large surface area by combining polyacrylonitrile nanofibrous membranes (PAN NMs), alginate, and Fe3+. In this approach, alginate was first functionalized on the PAN NMs and then, Fe3+ was assembled into the alginate to construct a TC-sensing surface. The resultant test strips exhibited the following integrated properties: fast sensing process (10 min), low naked eye detection limit (5 μg kg-1), excellent anti-interference ability, and satisfactory reusability. Furthermore, the TC concentration-dependent color change (yellow to maroon) was quantitatively visualized by an iPhone read-out hue parameter. All the findings indicate that this intriguing approach may pave the way for versatile designing of NMs to serve as a preventive treatment for the public.
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Affiliation(s)
- Yan Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
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118
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Arabsorkhi B, Sereshti H, Abbasi A. Electrospun metal‐organic framework/polyacrylonitrile composite nanofibrous mat as a microsorbent for the extraction of tetracycline residue in human blood plasma. J Sep Sci 2019; 42:1500-1508. [DOI: 10.1002/jssc.201801305] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 01/19/2019] [Accepted: 02/04/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Batoul Arabsorkhi
- School of ChemistryCollege of ScienceUniversity of Tehran Tehran Iran
| | - Hassan Sereshti
- School of ChemistryCollege of ScienceUniversity of Tehran Tehran Iran
| | - Alireza Abbasi
- School of ChemistryCollege of ScienceUniversity of Tehran Tehran Iran
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Pirolo M, Gioffrè A, Visaggio D, Gherardi M, Pavia G, Samele P, Ciambrone L, Di Natale R, Spatari G, Casalinuovo F, Visca P. Prevalence, molecular epidemiology, and antimicrobial resistance of methicillin-resistant Staphylococcus aureus from swine in southern Italy. BMC Microbiol 2019; 19:51. [PMID: 30808302 PMCID: PMC6390553 DOI: 10.1186/s12866-019-1422-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 02/19/2019] [Indexed: 12/19/2022] Open
Abstract
Background Colonization by livestock-associated MRSA (LA-MRSA) has increasingly been reported in the swine population worldwide. The aim of this study was to assess the prevalence of MRSA nasal carriage in healthy pigs, including the black (Calabrese) breed, from farms in the Calabria Region (Southern Italy). Between January and March 2018, a total of 475 healthy pigs reared in 32 farms were sampled by nasal swabbing. MRSA isolates were characterized by spa, MLST and SCCmec typing, and susceptibility testing to 17 antimicrobials. Results 22 of 32 (66.8%) pig farms resulted positive for MRSA. The prevalence of MRSA was 46.1% (219 MRSA culture-positive out of 475 samples). MRSA colonization was significantly higher in intensive farms and in pigs with a recent or ongoing antimicrobial treatment. All 219 MRSA isolates were assigned to ST398. The most common spa types were t011 (37.0%), t034 (22.4%) and t899 (15.1%). A novel spa type (t18290) was detected in one isolate. An insertion of IS256 in the ST398-specific A07 fragment of the SAPIG2195 gene was detected in 10 out of 81 t011 isolates. Nearly all isolates carried the SCCmec type V element, except 11 isolates that carried the SCCmec type IVc. None of the isolates was positive for the Panton-Valentine leukocidin. All isolates were resistant to tetracycline. High resistance rates were also found for clindamycin (93.1%), trimethoprim/sulfamethoxazole (68.4%), fluoroquinolones (47.9–65.3%) and erythromycin (46.1%). None of the isolates was resistant to vancomycin and fusidic acid. Overall, a multidrug resistant phenotype was observed in 88.6% of isolates. Conclusions We report a high prevalence of MRSA among healthy swine in Southern Italy farms, with higher isolation frequency associated with intensive farming. The epidemiological types identified in our study reflect those reported in other European countries. Our findings underscore the importance of monitoring the evolution of LA-MRSA in pig farms in order to implement control measures and reduce the risk of spread in the animal population. Electronic supplementary material The online version of this article (10.1186/s12866-019-1422-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mattia Pirolo
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146, Rome, Italy
| | - Angela Gioffrè
- Department of Medicine, Epidemiology, Workplace and Environmental Hygiene, Lamezia Terme Research Centre, INAIL - National Institute for Insurance against Accidents at Work, Lamezia Terme, Italy
| | - Daniela Visaggio
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146, Rome, Italy
| | - Monica Gherardi
- Department of Medicine, Epidemiology, Workplace and Environmental Hygiene , Monte Porzio Catone Research Centre, INAIL - National Institute for Insurance against Accidents at Work, Rome, Italy
| | - Grazia Pavia
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Catanzaro, Italy
| | - Pasquale Samele
- Department of Medicine, Epidemiology, Workplace and Environmental Hygiene, Lamezia Terme Research Centre, INAIL - National Institute for Insurance against Accidents at Work, Lamezia Terme, Italy
| | - Lucia Ciambrone
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Catanzaro, Italy
| | - Rossella Di Natale
- Department of Biomedical Sciences, Dental, Morphological and Functional Investigations, University of Messina, Messina, Italy
| | - Giovanna Spatari
- Department of Biomedical Sciences, Dental, Morphological and Functional Investigations, University of Messina, Messina, Italy
| | | | - Paolo Visca
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146, Rome, Italy.
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Zambri M, Cloutier M, Adam Z, Lapen DR, Wilkes G, Sunohara M, Topp E, Talbot G, Khan IUH. Novel virulence, antibiotic resistance and toxin gene-specific PCR-based assays for rapid pathogenicity assessment of Arcobacter faecis and Arcobacter lanthieri. BMC Microbiol 2019; 19:11. [PMID: 30634926 PMCID: PMC6330389 DOI: 10.1186/s12866-018-1357-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/28/2018] [Indexed: 11/30/2022] Open
Abstract
Background Arcobacter faecis and A. lanthieri are two newly classified species of genus Arcobacter. The prevalence and distribution of virulence, antibiotic resistance and toxin (VAT) genes in these species are required to assess their potential pathogenic health impacts to humans and animals. This study (i) developed species- and gene-specific primer pairs for the detection of six virulence, two antibiotic resistance, and three toxin genes in two target species; (ii) optimized eight single-tube multiplex and three monoplex PCR protocols using the newly developed species- and gene-specific primers; and (iii) conducted specificity and sensitivity evaluations as well as validation of eleven mono- and multiplex PCR assays by testing A. faecis (n= 29) and A. lanthieri (n= 10) strains isolated from various fecal and agricultural water sources to determine the prevalence and distribution of VAT genes and assess the degree of pathogenicity within the two species. Results Detection of all ten and eleven target VAT genes, and expression of cytolethal distending toxin (cdtA, cdtB and cdtC) genes in A. faecis and A. lanthieri reference strains with high frequency in field isolates suggest that they are potentially pathogenic strains. These findings indicate that these two species can pose a health risk to humans and animals. Conclusions The study results show that the developed mono- and multiplex PCR (mPCR) assays are simple, rapid, reliable and sensitive for the simultaneous assessment of the potential pathogenicity and antibiotic resistance profiling of tet(O) and tet(W) genes in these two newly discovered species. Also, these assays can be useful in diagnostic and analytical laboratories to determine the pathotypes and assessment of the virulence and toxin factors associated to human and animal infections. Electronic supplementary material The online version of this article (10.1186/s12866-018-1357-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Matthew Zambri
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.,Department of Biology, McMaster University, Hamilton, Ontario, L8S 4L8, Canada
| | - Michel Cloutier
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Zaky Adam
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.,School of Information Technology and Engineering, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - David R Lapen
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Graham Wilkes
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Mark Sunohara
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Guylaine Talbot
- Sherbrooke Research and Development Centre (SRDC), Agriculture and Agri-Food Canada, Sherbrooke, Quebec, J1M 0C8, Canada
| | - Izhar U H Khan
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.
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Jun H, Kurenbach B, Aitken J, Wasa A, Remus-Emsermann MN, Godsoe W, Heinemann JA. Effects of sub-lethal concentrations of copper ammonium acetate, pyrethrins and atrazine on the response of Escherichia coli to antibiotics. F1000Res 2019; 8:32. [PMID: 30828439 PMCID: PMC6381802 DOI: 10.12688/f1000research.17652.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/02/2019] [Indexed: 11/20/2022] Open
Abstract
Background: Antibiotic resistance in human and animal pathogens is mainly the outcome of human use of antibiotics. However, bacteria are also exposed to thousands of other antimicrobial agents. Increasingly those exposures are being investigated as co-selective agents behind the rapid rise and spread of resistance in bacterial pathogens of people and our domesticated animals. Methods: We measured the sub-lethal effects on antibiotic tolerance of the human pathogen/commensal Escherichia coli caused by exposure to three common biocide formulations based on either copper, pyrethrins, or atrazine as active ingredients. The influence of the efflux pump AcrAB-TolC was investigated using deletion strains, and the persistence of observed effects was determined. Results: Some effects were seen for all biocides, but the largest effects were observed with copper in combination with the antibiotic tetracycline. The effect was caused by both the induction of the adaptive efflux system and by chelation of the antibiotic by copper. Finally, persistence of the adaptive response was measured and found to persist for about two generations. Conclusions: Through a combination of microbe-chemical and chemical-chemical interactions, humanity may be creating micro-environments in which resistance evolution is accelerated.
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Affiliation(s)
- Hyunwoo Jun
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
| | - Brigitta Kurenbach
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
- Centre for Integrated Research in Biosafety and Centre for Integrative Ecology, University of Canterbury, Christchurch, 8140, New Zealand
| | - Jack Aitken
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
| | - Alibe Wasa
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
| | - Mitja N.P. Remus-Emsermann
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
- Biomolecular Interaction Centre, University of Canterbury, Christchurch, 8140, New Zealand
| | - William Godsoe
- Bio-Protection Centre, Lincoln University, Lincoln, 7647, New Zealand
| | - Jack A. Heinemann
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
- Centre for Integrated Research in Biosafety and Centre for Integrative Ecology, University of Canterbury, Christchurch, 8140, New Zealand
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122
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Magnetite-Supported Gold Nanostars for the Uptake and SERS Detection of Tetracycline. NANOMATERIALS 2018; 9:nano9010031. [PMID: 30591645 PMCID: PMC6359395 DOI: 10.3390/nano9010031] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 01/17/2023]
Abstract
Magnetite nanoparticles (MNPs) decorated with gold nanostars (AuNSs) have been prepared by using a seed growth method without the addition of surfactants or colloidal stabilizers. The hybrid nanomaterials were investigated as adsorbents for the uptake of tetracycline (TC) from aqueous solutions and subsequent detection using surface-enhanced Raman scattering (SERS). Several parameters were investigated in order to optimize the performance of these hybrid platforms on the uptake and SERS detection of TC, including variable pH values and the effect of contact time on the removal of TC. The spatial distribution of TC and AuNS on the hybrid composites was accomplished by coupling SERS analysis with Raman imaging studies, allowing also for the determination of the detection limit for TC when dissolved in ultrapure water (10 nM) and in more complex aqueous matrices (1 μM). Attempts were also made to investigate the adsorption modes of the TC molecules at the surface of the metal NPs by taking into account the enhancement of the Raman bands in these different matrices.
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123
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Cortés-Herrera C, Artavia G, Leiva A, Granados-Chinchilla F. Liquid Chromatography Analysis of Common Nutritional Components, in Feed and Food. Foods 2018; 8:E1. [PMID: 30577557 PMCID: PMC6352167 DOI: 10.3390/foods8010001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/28/2018] [Accepted: 11/05/2018] [Indexed: 12/20/2022] Open
Abstract
Food and feed laboratories share several similarities when facing the implementation of liquid-chromatographic analysis. Using the experience acquired over the years, through application chemistry in food and feed research, selected analytes of relevance for both areas were discussed. This review focused on the common obstacles and peculiarities that each analyte offers (during the sample treatment or the chromatographic separation) throughout the implementation of said methods. A brief description of the techniques which we considered to be more pertinent, commonly used to assay such analytes is provided, including approaches using commonly available detectors (especially in starter labs) as well as mass detection. This manuscript consists of three sections: feed analysis (as the start of the food chain); food destined for human consumption determinations (the end of the food chain); and finally, assays shared by either matrices or laboratories. Analytes discussed consist of both those considered undesirable substances, contaminants, additives, and those related to nutritional quality. Our review is comprised of the examination of polyphenols, capsaicinoids, theobromine and caffeine, cholesterol, mycotoxins, antibiotics, amino acids, triphenylmethane dyes, nitrates/nitrites, ethanol soluble carbohydrates/sugars, organic acids, carotenoids, hydro and liposoluble vitamins. All analytes are currently assayed in our laboratories.
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Affiliation(s)
- Carolina Cortés-Herrera
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio 11501-2060, Costa Rica.
| | - Graciela Artavia
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio 11501-2060, Costa Rica.
| | - Astrid Leiva
- Centro de Investigación en Nutrición Animal, Universidad de Costa Rica, Ciudad Universitaria Rodrigo 11501-2060, Costa Rica.
| | - Fabio Granados-Chinchilla
- Centro de Investigación en Nutrición Animal, Universidad de Costa Rica, Ciudad Universitaria Rodrigo 11501-2060, Costa Rica.
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124
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Dognon SR, Degand G, Douny C, Delahaut P, Igout A, Dahouda M, Youssao AKI, Scippo ML. The Modified New Two Plates Test for Detecting Tetracycline, Beta-Lactam, and Sulfonamide Antibiotic Residues in Kidney and Muscle of Cattle Slaughtered in North-East Benin. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1322-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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125
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Naqvi F, Faraz M, Beg S, Khare N. Synthesis and Phase Transformation Studies of Dysprosium-Doped Bi 4V 2O 11 Nanoparticles and Their Application in Visible Light Photocatalytic Degradation of Tetracycline Drug. ACS OMEGA 2018; 3:11300-11306. [PMID: 30320259 PMCID: PMC6175493 DOI: 10.1021/acsomega.8b01012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/28/2018] [Indexed: 05/30/2023]
Abstract
Recently, Bi4V2O11 as an electrolyte material has pulled in considerable consideration because of its remarkable novel applications. In this article, novel, dysprosium-doped (x = 0.2, 0.3, 0.4, and 0.5) Bi4V2O11 (Dy/BVO) nanoparticles have been synthesized by sol-gel strategy. The photocatalyst Dy/BVO nanoparticles exhibit higher photocatalytic efficiency than BVO nanoparticles assessed by debasement of tetracycline drug under visible light illumination. Our work focuses on the phase transformation, conducting properties, and mechanisms of the Dy/BVO nanoparticles in relation to execute some methods of processing and manufacturing product in commercial applications. The characterization of Dy/BVO was performed by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, and UV-vis analysis. ac impedance spectroscopy was used to analyze the conducting behavior of synthesized nanoparticles in the temperature range 100-600 °C. The photocatalytic activity revealed that Dy/BVO remarkably enhanced the photocatalytic activity. This is the first report that Dy/BVO can destroy the drug effluent which is coming from the drug industry and also worried about the human health hazards.
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Affiliation(s)
- Faria
K. Naqvi
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd. Faraz
- Department
of Physic, Indian Institute of Technology
Delhi, Delhi 110016, India
| | - Saba Beg
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Neeraj Khare
- Department
of Physic, Indian Institute of Technology
Delhi, Delhi 110016, India
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126
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Sheng W, Chang Q, Shi Y, Duan W, Zhang Y, Wang S. Visual and fluorometric lateral flow immunoassay combined with a dual-functional test mode for rapid determination of tetracycline antibiotics. Mikrochim Acta 2018; 185:404. [PMID: 30088104 DOI: 10.1007/s00604-018-2945-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/02/2018] [Indexed: 01/11/2023]
Abstract
A fluorometric immunochromatographic assay (FICA) is described where ZnCdSe/ZnS quantum dots (QDs) act as fluorescent label and gold nanoparticles (AuNPs) act as quencher. The assay works in the "turn-on" mode, i.e. the fluorescent signal (best measured at excitation/emission wavelengths of 302/525 nm) increases with the increase of analyte concentration. This assay can detect tetracycline antibiotics including tetracycline, oxytetracycline, chlortetracycline, and doxycycline. It is not interfered by other veterinary drugs. The visual limits of detection (LODs) for the tetracycline antibiotics are 2 μg·L-1 in buffer, 20 μg·L-1 in milk, and 40 μg·kg-1 in animal muscle tissue. The assay (including sample treatment) can be performed within 30 min. The FICA based on "turn on" mode is more sensitive than the colloidal gold-based immunochromatographic assay (CGICA) and quantum dot-based immunochromatographic assay (QDICA) based on "turn off" mode using either AuNPs or QDs as signal labels. One strip can simultaneously provide the fluorescent test results in the "turn on" mode on the basis of QD luminescence quenching under UV light. The colorimetric test is of the "turn off" mode based on the formation of a red coloration due to the use of AuNPs under natural light. The use of such a dual-functional test mode allows for rapid semi-quantitative determination of tetracycline antibiotics in milk and tissue samples. Graphical abstract Schematoc of a fluorometric immunochromatographic assay (FICA) based on fluorescence quenching of quantum dot (QD) by gold nanoparticle (AuNP) combined with a dual-functional test mode under UV light (turn on mode) and natural light (turn off mode) to visually detect tetracycline antibiotics.
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Affiliation(s)
- Wei Sheng
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Qing Chang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yingjie Shi
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Wenxia Duan
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yan Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China. .,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), Beijing, 100048, China.
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127
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Natarajan M, Kumar D, Mandal J, Biswal N, Stephen S. A study of virulence and antimicrobial resistance pattern in diarrhoeagenic Escherichia coli isolated from diarrhoeal stool specimens from children and adults in a tertiary hospital, Puducherry, India. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2018; 37:17. [PMID: 30005599 PMCID: PMC6045864 DOI: 10.1186/s41043-018-0147-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Emergence of atypical enteropathogenic Escherichia coli (EPEC) and hybrid E. coli (harboring genes of more than one DEC pathotypes) strains have complicated the issue of growing antibiotic resistance in diarrhoeagenic Escherichia coli (DEC). This ongoing evolution occurs in nature predominantly via horizontal gene transfers involving the mobile genetic elements like integrons notably class 1 integron. This study was undertaken to determine the virulence pattern and antibiotic resistance among the circulating DEC strains in a tertiary care center in south of India. METHODS Diarrhoeal stool specimens were obtained from 120 children (< 5 years) and 100 adults (> 18 years), subjected to culture and isolation of diarrhoeal pathogens. Conventional PCR was performed to detect 10 virulence and 27 antimicrobial resistance (AMR) genes among the E. coli isolated. RESULTS DEC infection was observed in 45 (37.5%) children and 18 (18%) adults, among which [18 (40%), 10 (10%)] atypical EPEC was most commonly detected followed by [6 (13.3%), 4 (4%)] ETEC, [5 (11.1%) 2 (2%)] EAEC, [(3 (6.6%), 0 (0%)] EIEC, [3 (6.6%), 0 (0%] typical EPEC, and [4 (8.8%), 1 (1%)] STEC, and no NTEC and CDEC was detected. DEC co-infection in 3 (6.6%) children, and 1(1%) adult and sole hybrid DEC infection in 3 (6.6%) children was detected. The distribution of sulphonamide resistance genes (sulI, sulII, and sulIII were 83.3 and 21%, 60.41 and 42.1%, and 12.5 and 26.3%, respectively) and class 1 integron (int1) genes (41.6 and 26.31%) was higher in DEC strains isolated from children and adults, respectively. Other AMR genes detected were qnrS, qnrB, aac(6')Ib-cr, dhfr1, aadB, aac(3)-IV, tetA, tetB, tetD, catI, blaCTX, blaSHV, and blaTEM. None harbored qnrA, qnrC, qepA, tetE, tetC, tetY, ermA, mcr1, int2, and int3 genes. CONCLUSIONS Atypical EPEC was a primary etiological agent of diarrhea in children and adults among the DEC pathotypes. Detection of high numbers of AMR genes and class 1 integron genes indicate the importance of mobile genetic elements in spreading of multidrug resistance genes among these strains.
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Affiliation(s)
- Mailan Natarajan
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, 605006 India
| | - Deepika Kumar
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, 605006 India
| | - Jharna Mandal
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, 605006 India
| | - Niranjan Biswal
- Department of Paediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, 605006 India
| | - Selvaraj Stephen
- Department of Microbiology, Mahatma Gandhi Medical College and Research Institute (MGMC & RI), Puducherry, 607 402 India
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128
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Gwandu SH, Nonga HE, Mdegela RH, Katakweba AS, Suleiman TS, Ryoba R. Assessment of Raw Cow Milk Quality in Smallholder Dairy Farms in Pemba Island Zanzibar, Tanzania. Vet Med Int 2018; 2018:1031726. [PMID: 29721257 PMCID: PMC5867610 DOI: 10.1155/2018/1031726] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/24/2018] [Indexed: 11/17/2022] Open
Abstract
Milk quality depends on the physicochemical characteristics, hygienic standards, and nutritional quality; however, animal husbandry practices, unhygienic harvesting and processing, may affect its quality. A cross-sectional study was conducted between August 2010 and July 2011 to assess the hygiene of cow milk production environment, raw cow milk physicochemical characteristics, and microbial quality and estimate the prevalence of antimicrobial residues using standard methods in Pemba Island. A total of 98 raw cow milk samples from selected smallholder dairy farms were analyzed, and the judgement on the quality used the East African Standards. Generally, the milk production chain was done under the unhygienic condition, and dirty plastic containers were used for collection and storage of milk under room temperature. Some milk samples had abnormal colour (2.1%), abnormal smell (7.1%), and pH below normal (35.7%), clotted on alcohol test (9.2%), and had the specific gravity below normal (13.3%). All the milk samples had mineral contents within the recommended range. Milk samples with butterfat below normal were 29.6%, while 14.3% had total solids below recommended values. The mean total viable count (TVC) of milk container surfaces was 9.7 ± 10.5 log CFU/100 cm2, while total coliform count (TCC) was 7.8 ± 8.5 log CFU/100 cm2. Up to 55.1% of milk had TVC beyond the recommended levels. The milk mean TVC was 11.02 ± 11.6 log CFU/ml and TCC was 6.7 ± 7.3 log CFU/ml. Up to 26.5% of milk samples had the TCC beyond levels. Results on physicochemical characteristics and nutritional analysis show that the raw cow milk in Pemba Island is of inferior quality. Microbiological results of this study imply heavy contaminations of milk. Antimicrobial residues were detected in 83% of the samples and most of them were from Wete District. Unhygienic milk production chain accelerates microbial contaminations, and antimicrobial residues in milk are a big problem that needs urgent attention from the responsible authority.
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Affiliation(s)
- S. H. Gwandu
- Ministry of Education and Vocational Training, P.O. Box 90543, Dar es Salaam, Tanzania
| | - H. E. Nonga
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - R. H. Mdegela
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - A. S. Katakweba
- Pest Management Centre, Sokoine University of Agriculture, P.O. Box 3010, Chuo Kikuu, Morogoro, Tanzania
| | - T. S. Suleiman
- Department of Veterinary Services, Ministry of Livestock and Fisheries, P.O. Box 295, Zanzibar, Tanzania
| | - R. Ryoba
- Department of Animal Science and Production, Sokoine University of Agriculture, P.O. Box 3004, Chuo Kikuu, Morogoro, Tanzania
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129
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Development of a SPR aptasensor containing oriented aptamer for direct capture and detection of tetracycline in multiple honey samples. Biosens Bioelectron 2018. [PMID: 29522968 DOI: 10.1016/j.bios.2018.02.051] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Although surface plasmon resonance (SPR) technique and aptamer technology shows great potential in analytical and biological chemistry, direct capture and analysis of small molecules using SPR remains tough. Detection sensitivity of aptasensor and recognition ability of aptamer is limited, because direct immobilization of aptamer causes large steric hindrance and strand entanglement. Herein, we chose a typical small molecule-tetracycline (Mw. 444.4 g/mol) as a model, and combined aptamer technology, DNA nanostructure, and commercial Biacore T200 SPR instrument to develop a straightforward format SPR aptasensor. Anti-tetracycline aptamer (Apt76) was fabricated on the top of a tetrahedron nanostructure to provide a better accessibility to tetracycline than the single-stranded Apt76 (ss-Apt76), and thus to improve sensitivity of the SPR aptasensor. The aptasensor was then validated in real world application for tetracycline screening in multiple honey samples, achieving good recovery rates of 80.20-114.3%, intuitive sensorgrams indicating the binding kinetic properties, and high specificity towards tetracycline. LOD of the tetrahedron-based SPR aptasensor was obtained using the real honey sample and calculated to be 0.0069 μg/kg, which was 10-fold range lower than that of the ss-Apt76-based aptasensor. The proof-of-concept demonstrated that aptamers of small molecules can be oriented immobilized on the SPR surface in a uniform nanoscale distance in both lateral and vertical direction, so as to achieve better conformational folding and better accessibility to small molecules. The concept is promising to be a universal and powerful tool for other ligand immobilization and SPR studies for both real world detection and molecular interaction.
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130
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Liquid Chromatography-Tandem Mass Spectrometry Determination and Depletion Profile of Chlortetracycline, Doxycycline, and Oxytetracycline in Broiler Chicken Muscle After Oral Administration. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1199-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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131
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Desmarchelier A, Anizan S, Minh Tien M, Savoy MC, Bion C. Determination of five tetracyclines and their epimers by LC-MS/MS based on a liquid-liquid extraction with low temperature partitioning. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:686-694. [DOI: 10.1080/19440049.2018.1427894] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Aurélien Desmarchelier
- Nestlé Research Center, Institute of Food Safety and Analytical Science, Lausanne, Switzerland
| | | | | | - Marie-Claude Savoy
- Nestlé Research Center, Institute of Food Safety and Analytical Science, Lausanne, Switzerland
| | - Cindy Bion
- Nestlé Research Center, Institute of Food Safety and Analytical Science, Lausanne, Switzerland
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132
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Islas G, Rodriguez JA, Perez-Silva I, Miranda JM, Ibarra IS. Solid-Phase Extraction and Large-Volume Sample Stacking-Capillary Electrophoresis for Determination of Tetracycline Residues in Milk. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:5394527. [PMID: 29675286 PMCID: PMC5838455 DOI: 10.1155/2018/5394527] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/15/2017] [Accepted: 12/06/2017] [Indexed: 06/08/2023]
Abstract
Solid-phase extraction in combination with large-volume sample stacking-capillary electrophoresis (SPE-LVSS-CE) was applied to measure chlortetracycline, doxycycline, oxytetracycline, and tetracycline in milk samples. Under optimal conditions, the proposed method had a linear range of 29 to 200 µg·L-1, with limits of detection ranging from 18.6 to 23.8 µg·L-1 with inter- and intraday repeatabilities < 10% (as a relative standard deviation) in all cases. The enrichment factors obtained were from 50.33 to 70.85 for all the TCs compared with a conventional capillary zone electrophoresis (CZE). This method is adequate to analyze tetracyclines below the most restrictive established maximum residue limits. The proposed method was employed in the analysis of 15 milk samples from different brands. Two of the tested samples were positive for the presence of oxytetracycline with concentrations of 95 and 126 µg·L-1. SPE-LVSS-CE is a robust, easy, and efficient strategy for online preconcentration of tetracycline residues in complex matrices.
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Affiliation(s)
- Gabriela Islas
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42076 Pachuca, Hidalgo, Mexico
| | - Jose A. Rodriguez
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42076 Pachuca, Hidalgo, Mexico
| | - Irma Perez-Silva
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42076 Pachuca, Hidalgo, Mexico
| | - Jose M. Miranda
- Departamento Química Analítica, Nutrición y Bromatología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Pabellón 4 planta bajo, Campus Universitario s/n, 27002 Lugo, Spain
| | - Israel S. Ibarra
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42076 Pachuca, Hidalgo, Mexico
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133
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Dhakal S, Chao K, Huang Q, Kim M, Schmidt W, Qin J, Broadhurst CL. A Simple Surface-Enhanced Raman Spectroscopic Method for on-Site Screening of Tetracycline Residue in Whole Milk. SENSORS (BASEL, SWITZERLAND) 2018; 18:E424. [PMID: 29389871 PMCID: PMC5856142 DOI: 10.3390/s18020424] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/11/2018] [Accepted: 01/29/2018] [Indexed: 11/16/2022]
Abstract
Therapeutic and subtherapeutic use of veterinary drugs has increased the risk of residue contamination in animal food products. Antibiotics such as tetracycline are used for mastitis treatment of lactating cows. Milk expressed from treated cows before the withdrawal period has elapsed may contain tetracycline residue. This study developed a simple surface-enhanced Raman spectroscopic (SERS) method for on-site screening of tetracycline residue in milk and water. Six batches of silver colloid nanoparticles were prepared for surface enhancement measurement. Milk-tetracycline and water-tetracycline solutions were prepared at seven concentration levels (1000, 500, 100, 10, 1, 0.1, and 0.01 ppm) and spiked with silver colloid nanoparticles. A 785 nm Raman spectroscopic system was used for spectral measurement. Tetracycline vibrational modes were observed at 1285, 1317 and 1632 cm-1 in water-tetracycline solutions and 1322 and 1621 cm-1 (shifted from 1317 and 1632 cm-1, respectively) in milk-tetracycline solutions. Tetracycline residue concentration as low as 0.01 ppm was detected in both the solutions. The peak intensities at 1285 and 1322 cm-1 were used to estimate the tetracycline concentrations in water and milk with correlation coefficients of 0.92 for water and 0.88 for milk. Results indicate that this SERS method is a potential tool that can be used on-site at field production for qualitative and quantitative detection of tetracycline residues.
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Affiliation(s)
- Sagar Dhakal
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
| | - Kuanglin Chao
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
| | - Qing Huang
- Hefei Institute of Physical Science, CAS 350 Shushanhu Road, Hefei 230031, China.
| | - Moon Kim
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
| | - Walter Schmidt
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
| | - Jianwei Qin
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
| | - C Leigh Broadhurst
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, Bldg. 303 BARC-East, Beltsville, MD 20705, USA.
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134
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Zhang L, Gu J, Wang X, Sun W, Yin Y, Sun Y, Guo A, Tuo X. Behavior of antibiotic resistance genes during co-composting of swine manure with Chinese medicinal herbal residues. BIORESOURCE TECHNOLOGY 2017; 244:252-260. [PMID: 28780258 DOI: 10.1016/j.biortech.2017.07.035] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/03/2017] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
Swine manure is considered to be a reservoir for antibiotic resistance genes (ARGs) but little is known about the variations in ARGs during the co-composting of swine manure with Chinese medicinal herbal residues (CMHRs). Thus, this study explored the effects of CMHRs on the variations in ARGs during co-composting with swine manure. The results showed that CMHRs could reduce effectively most of the targeted ARGs (0.18-2.82logs) and mobile genetic elements (MGEs) (0.47-3.34logs). The correlations indicated that CMHRs might decrease the spread of ARGs via horizontal gene transfer. Redundancy analysis showed that the bacterial communities had more important effects on the variations in ARGs compared with environmental factors and MGEs. The results of this study demonstrate that CMHRs can decrease the abundances of ARGs and MGEs, as well as reducing the risk of ARGs spreading during the application of compost products to farmland.
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Affiliation(s)
- Li Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jie Gu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xiaojuan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wei Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanan Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yixin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Aiyun Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaxia Tuo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
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