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Pazra DF, Latif H, Basri C, Wibawan IWT, Rahayu P. Distribution analysis of tetracycline resistance genes in Escherichia coli isolated from floor surface and effluent of pig slaughterhouses in Banten Province, Indonesia. Vet World 2023; 16:509-517. [PMID: 37041843 PMCID: PMC10082748 DOI: 10.14202/vetworld.2023.509-517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/01/2023] [Indexed: 04/13/2023] Open
Abstract
Background and Aim Slaughterhouses and their effluents could serve as a "hotspot" for the occurrence and distribution of antibiotic-resistant bacteria in the environment. This study aimed to understand the distribution of tetracycline resistance genes in Escherichia coli isolated from the floor surface and effluent samples of pig slaughterhouses in Banten Province, Indonesia. Materials and Methods Ten samples, each from floor surface swabs and effluents, were collected from 10 pig slaughterhouses in Banten Province. Escherichia coli strains were isolated and identified by referring to the protocol of the Global Tricycle Surveillance extended-spectrum beta-lactamase E. coli from the WHO (2021). Quantitative real-time polymerase chain reaction (qPCR) was used to detect the tet genes. Results The tetA, tetB, tetC, tetM, tetO, and tetX genes were distributed in the isolates from the floor surface samples, and the tetA, tetC, tetE, tetM, tetO, and tetX genes were distributed in the isolates from the effluent samples. The tetO gene (60%) was the most dominant gene in the isolates from floor surface samples, while the tetA gene was the dominant one in the isolates from the effluent samples (50%). The tetA + tetO gene combination was the dominant pattern (15%) in the E. coli isolates. Conclusion The high prevalence and diversity of the tet genes in floor surface and effluent samples from pig slaughterhouses in Banten Province indicated that the transmission of the tet genes had occurred from pigs to the environment; thus, this situation should be considered a serious threat to public health.
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Affiliation(s)
- Debby Fadhilah Pazra
- Animal Biomedical Science Study Program, School of Veterinary Medicine and Biomedical Sciences (SVMBS), IPB University, Bogor, Indonesia
- Animal Health Study Program, Bogor Agricultural Development Polytechnic, Bogor, Indonesia
| | - Hadri Latif
- Department of Animal Diseases and Veterinary Public Health, School of Veterinary Medicine and Biomedical Sciences (SVMBS), IPB University, Bogor, Indonesia
- Corresponding author: Hadri Latif, e-mail: Co-authors: DFP: , CB: , IWTW: , PR:
| | - Chaerul Basri
- Department of Animal Diseases and Veterinary Public Health, School of Veterinary Medicine and Biomedical Sciences (SVMBS), IPB University, Bogor, Indonesia
| | - I. Wayan Teguh Wibawan
- Department of Animal Diseases and Veterinary Public Health, School of Veterinary Medicine and Biomedical Sciences (SVMBS), IPB University, Bogor, Indonesia
| | - Puji Rahayu
- Quality Control Laboratory and Certification of Animal Products, Bogor, Indonesia
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2
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A Cutoff Determination of Real-Time Loop-Mediated Isothermal Amplification (LAMP) for End-Point Detection of Campylobacter jejuni in Chicken Meat. Vet Sci 2022; 9:vetsci9030122. [PMID: 35324850 PMCID: PMC8953776 DOI: 10.3390/vetsci9030122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/22/2022] [Accepted: 03/05/2022] [Indexed: 02/01/2023] Open
Abstract
Campylobacter jejuni is one of the leading causes of foodborne illness worldwide. C. jejuni is commonly found in poultry. It is the most frequent cause of contamination and thus resulting in not only public health concerns but also economic impacts. To test for this bacterial contamination in food processing plants, this study attempted to employ a simple and rapid detection assay called loop-mediated isothermal amplification (LAMP). The best cutoff value for the positive determination of C. jejuni calculated using real-time LAMP quantification cycle (Cq) was derived from the receiver operating characteristic (ROC) curve modeling. The model showed an area under curve (AUC) of 0.936 (95% Wald CI: 0.903–0.970). Based on Youden’s J statistic, the optimal cutoff value which had the highest sensitivity and specificity from the model was calculated as 18.07. The LAMP assay had 96.9% sensitivity, 95.8% specificity, and 93.9 and 97.9% positive and negative predictive values, respectively, compared to a standard culture approach for C. jejuni identification. Among all non-C. jejuni strains, the LAMP assay gave each of 12.5% false-positive results to C. coli and E. coli (1 out of 8 samples). The assay can detect C. jejuni at the lowest concentration of 103 CFU/mL. Our results suggest a preliminary indicator for the application of end-point LAMP assays, such as turbidity and UV fluorescence tests, to detect C. jejuni in field operations. The LAMP assay is an alternative screening test for C. jejuni contamination in food samples. The method provides a rapid detection, which requires only 9 min with a cutoff value of Cq. We performed the extraction of DNA from pure cultures and the detection of C. jejuni using the LAMP assay within 3 h. However, we were not able to reduce the time for the process of enrichment involved in our study. Therefore, we suggest that alternative enrichment media and rapid DNA extraction methods should be considered for further study. Compared to other traditional methods, our proposed assay requires less equipment and time, which is applicable at any processing steps in the food production chain.
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3
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Young P, Tarce P, Adhikary S, Connolly J, Crawshaw T, Ghorashi SA. Evaluation of high-resolution melt curve analysis for rapid differentiation of Campylobacter hepaticus from other species in birds. PLoS One 2021; 16:e0251328. [PMID: 33984000 PMCID: PMC8118346 DOI: 10.1371/journal.pone.0251328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/24/2021] [Indexed: 11/18/2022] Open
Abstract
Spotty liver disease (SLD) is a bacterial disease of chicken, causing mortalities and reduction in egg production, hence, contributing to economic loss in the poultry industry. The causative agent of SLD has only recently been identified as a novel Campylobacter species, Campylobacter hepaticus. Specific primers were designed from the hsp60 gene of Campylobacter hepaticus and PCR followed by high-resolution melt curve analysis was optimised to detect and differentiate three species of Campylobacter (Campylobacter coli, Campylobacter jejuni and Campylobacter hepaticus). The three Campylobacter species produced a distinct curve profile and was differentiated using HRM curve analysis. The potential of the PCR-HRM curve analysis was shown in the genotyping of 37 Campylobacter isolates from clinical specimens from poultry farms. PCR-HRM curve analysis of DNA extracts from bile samples or cultures from bile samples, were identified as Campylobacter hepaticus and confirmed by DNA sequencing. The DNA sequence analysis of selected samples from each of the three HRM distinctive curves patterns showed that each DNA sequence was associated with a unique melt profile. The potential of the PCR-HRM curve analysis in genotyping of Campylobacter species was also evaluated using faecal specimens from 100 wild birds. The results presented in this study indicate that PCR followed by HRM curve analysis provides a rapid and robust technique for genotyping of Campylobacter species using either bacterial cultures or clinical specimens.
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Affiliation(s)
- Petrina Young
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Pol Tarce
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Sadhana Adhikary
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Joanne Connolly
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Tim Crawshaw
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
- School of Veterinary Sciences, Massey University, Tennent Drive, Palmerston North, New Zealand
| | - Seyed A. Ghorashi
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia
- * E-mail:
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4
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Syarifah IK, Latif H, Basri C, Rahayu P. Identification and differentiation of Campylobacter isolated from chicken meat using real-time polymerase chain reaction and high resolution melting analysis of hipO and glyA genes. Vet World 2020; 13:1875-1883. [PMID: 33132600 PMCID: PMC7566261 DOI: 10.14202/vetworld.2020.1875-1883] [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: 03/24/2020] [Accepted: 07/27/2020] [Indexed: 12/26/2022] Open
Abstract
Background and Aim: Campylobacter species have been recognized as the most frequently identified bacterial cause of human gastroenteritis. The aims of this study were to identify Campylobacter jejuni and Campylobacter coli species isolated from chicken meat and to analyze the differences in the melting curve patterns of both species. Materials and Methods: A total of 105 chicken meat samples collected from slaughterhouses and retailers in six provinces in Indonesia were examined for the isolation and identification of Campylobacter spp. A total of 56 positive isolates of Campylobacter spp. were analyzed using the quantitative real-time polymerase chain reaction and high resolution melting method. Results: The prevalence of Campylobacter spp. in chicken meat was found to be 61.9%. Regarding the identification, 23 isolates (41.07%) were C. jejuni, 22 (39.29%) were C. coli, six (10.71%) were a mix between C. jejuni and C. coli, and five isolates (8.93%) were Campylobacter spp. All the C. jejuni and C. coli isolates produced varied melting curve patterns. Conclusion: The high prevalence of C. jejuni and C. coli in chicken meat in Indonesia indicates a high risk of the incidence of campylobacteriosis in humans.
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Affiliation(s)
- Ika Kartika Syarifah
- Veterinary Public Health Study Program, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia.,Quality Control Laboratory and Certification of Animal Products, Bogor, Indonesia
| | - Hadri Latif
- Department of Animal Infectious Diseases and Veterinary Public Health, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Chaerul Basri
- Department of Animal Infectious Diseases and Veterinary Public Health, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Puji Rahayu
- Quality Control Laboratory and Certification of Animal Products, Bogor, Indonesia
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5
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Differentiation of Community-Associated and Livestock-Associated Methicillin-Resistant Staphylococcus aureus Isolates and Identification of spa Types by Use of PCR and High-Resolution Melt Curve Analysis. J Clin Microbiol 2020; 58:JCM.02088-19. [PMID: 32132185 DOI: 10.1128/jcm.02088-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/24/2020] [Indexed: 11/20/2022] Open
Abstract
Infections due to methicillin-resistant Staphylococcus aureus (MRSA) are present worldwide and represent a major public health concern. The capability of PCR followed by high-resolution melt (HRM) curve analysis for the detection of community-associated and livestock-associated MRSA strains and the identification of staphylococcal protein A (spa) locus was evaluated in 74 MRSA samples which were isolated from the environment, humans, and pigs on a single piggery. PCR-HRM curve analysis identified four spa types among MRSA samples and differentiated MRSA strains accordingly. A nonsubjective differentiation model was developed according to genetic confidence percentage values produced by tested samples, which did not require visual interpretation of HRM curve results. The test was carried out at different settings, and result data were reanalyzed and confirmed with DNA sequencing. PCR-HRM curve analysis proved to be a robust and reliable test for spa typing and can be used as a tool in epidemiological studies.
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Salvioni Recalde OD, Pereira Brunelli J, Rolon MS, Rojas de Arias A, Aldama O, Gómez CV. First Molecular Report of Leishmania ( Leishmania) amazonensis and Leishmania ( Viannia) guyanensis in Paraguayan Inhabitants Using High-Resolution Melt-PCR. Am J Trop Med Hyg 2020; 101:780-788. [PMID: 31407656 DOI: 10.4269/ajtmh.18-0880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
American tegumentary leishmaniasis is an endemic anthropozoonosis undergoing expansion on the American continent. The disease is caused by several Leishmania species and it is manifested as cutaneous and mucocutaneous leishmaniasis. In this study, we evaluate the viability of high-resolution melt polymerase chain reaction (HRM-PCR) analysis to differentiate four closely related Leishmania species as a routine tool for the diagnosis of leishmaniasis. For this purpose, biopsy specimens from cutaneous and mucocutaneous lesions were taken from 132 individuals from endemic and non-endemic areas for leishmaniasis. Each sample was processed for parasitological, histopathological, and molecular analysis. Positive biopsy samples were analyzed by HRM-PCR of a 144-bp heat-shock protein (hsp70) gene fragment, and new cases were confirmed by sequencing. Of the 132 samples analyzed, 36 (27%) were positive for Leishmania spp., of which 86% were from cutaneous lesions and 14% from mucocutaneous lesions. We identified Leishmania (Viannia) braziliensis (84%), Leishmania (Leishmania) infantum (13%), and Leishmania (Leishmania) amazonensis (3%) in cutaneous lesions, and L. (V.) braziliensis (40%), L. (L.) infantum (20%), L. (L.) amazonensis (20%), and Leishmania (Viannia) guyanensis (20%) in mucocutaneous lesions. The main purpose of this research was to report for the first time in Paraguay the presence of L. (L.) amazonensis and L. (V.) guyanensis in patients with cutaneous and mucocutaneous lesions, using the HRM-PCR technique. In addition, we report the presence of additional new cases of L. (L.) infantum in cutaneous lesions.
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Affiliation(s)
| | - José Pereira Brunelli
- Centro de Especialidades Dermatológicas - Programa Nacional de Control de la Lepra, San Lorenzo, Paraguay
| | | | | | - Olga Aldama
- Centro de Especialidades Dermatológicas - Programa Nacional de Control de la Lepra, San Lorenzo, Paraguay
| | - Celeste Vega Gómez
- Centro para el Desarrollo de la Investigación Científica, Asunción, Paraguay
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Wang J, Yang J, Gao S, Liu A, Rashid M, Li Y, Liu Z, Liu J, Liu G, Luo J, Guan G, Yin H. Rapid detection and differentiation of Theileria annulata, T. orientalis and T. sinensis using high-resolution melting analysis. Ticks Tick Borne Dis 2019; 11:101312. [PMID: 31645296 DOI: 10.1016/j.ttbdis.2019.101312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/24/2019] [Accepted: 10/09/2019] [Indexed: 11/18/2022]
Abstract
Bovine theileriosis, caused by protozoan parasites of the genus Theileria, presents with various clinical symptoms. In cattle, clinical presentations and outcomes of bovine theileriosis are closely correlated with the causative Theileria spp. Thus, accurate detection and discrimination of Theileria spp. are essential for epidemiological studies and for provision of clinical management strategies. High-resolution melting (HRM) analyses of two amplicons targeting the 18S rRNA indicated that T. annulata, T. orientalis, and T. sinensis isolated from China can be accurately detected and discriminated with the lowest detection limit of 1-10 copy numbers of plasmid bearing the 18S rRNA sequence. The approach was verified with DNA samples from experimentally infected cattle and field samples. Thus, this assay is useful for diagnosis of bovine theileriosis in field samples and experimentally infected animals, and could also be applicable for the survey of parasite dynamics, epidemiological studies.
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Affiliation(s)
- Jinming Wang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Jifei Yang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Shandian Gao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Aihong Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Muhammad Rashid
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Youquan Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Zhijie Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Junlong Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Guangyuan Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Jianxun Luo
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China
| | - Guiquan Guan
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China.
| | - Hong Yin
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, 730046, PR China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou 225009, PR China.
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8
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Banowary B, Dang VT, Sarker S, Connolly JH, Chenu J, Groves P, Raidal S, Ghorashi SA. Evaluation of Two Multiplex PCR-High-Resolution Melt Curve Analysis Methods for Differentiation of Campylobacter jejuni and Campylobacter coli Intraspecies. Avian Dis 2019; 62:86-93. [PMID: 29620472 DOI: 10.1637/11739-080417-reg.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Campylobacter infection is a common cause of bacterial gastroenteritis in humans and remains a significant global public health issue. The capability of two multiplex PCR (mPCR)-high-resolution melt (HRM) curve analysis methods (i.e., mPCR1-HRM and mPCR2-HRM) to detect and differentiate 24 poultry isolates and three reference strains of Campylobacter jejuni and Campylobacter coli was investigated. Campylobacter jejuni and C. coli were successfully differentiated in both assays, but the differentiation power of mPCR2-HRM targeting the cadF gene was found superior to that of mPCR1-HRM targeting the gpsA gene or a hypothetical protein gene. However, higher intraspecies variation within C. coli and C. jejuni isolates was detected in mPCR1-HRM when compared with mPCR2-HRM. Both assays were rapid and required minimum interpretation skills for discrimination between and within Campylobacter species when using HRM curve analysis software.
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Affiliation(s)
- Banya Banowary
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678
| | - Van Tuan Dang
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678
| | - Subir Sarker
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678.,C School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia 3086
| | - Joanne H Connolly
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678.,B Graham Centre for Agricultural Innovation, New South Wales Department of Primary Industries and Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678
| | - Jeremy Chenu
- D Birling Avian Laboratories, Bringelly, New South Wales, Australia 2556
| | - Peter Groves
- E University of Sydney, Sydney, New South Wales, Australia 2006
| | - Shane Raidal
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678.,B Graham Centre for Agricultural Innovation, New South Wales Department of Primary Industries and Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678
| | - Seyed Ali Ghorashi
- A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678.,B Graham Centre for Agricultural Innovation, New South Wales Department of Primary Industries and Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678
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Ricke SC, Feye KM, Chaney WE, Shi Z, Pavlidis H, Yang Y. Developments in Rapid Detection Methods for the Detection of Foodborne Campylobacter in the United States. Front Microbiol 2019; 9:3280. [PMID: 30728816 PMCID: PMC6351486 DOI: 10.3389/fmicb.2018.03280] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 12/17/2018] [Indexed: 12/27/2022] Open
Abstract
The accurate and rapid detection of Campylobacter spp. is critical for optimal surveillance throughout poultry processing in the United States. The further development of highly specific and sensitive assays to detect Campylobacter in poultry matrices has tremendous utility and potential for aiding the reduction of foodborne illness. The introduction and development of molecular methods such as polymerase chain reaction (PCR) have enhanced the diagnostic capabilities of the food industry to identify the presence of foodborne pathogens throughout poultry production. Further innovations in various methodologies, such as immune-based typing and detection as well as high throughput analyses, will provide important epidemiological data such as the identification of unique or region-specific Campylobacter. Comparable to traditional microbiology and enrichment techniques, molecular techniques/methods have the potential to have improved sensitivity and specificity, as well as speed of data acquisition. This review will focus on the development and application of rapid molecular methods for identifying and quantifying Campylobacter in U.S. poultry and the emergence of novel methods that are faster and more precise than traditional microbiological techniques.
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Affiliation(s)
- Steven C. Ricke
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
| | - Kristina M. Feye
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
| | | | - Zhaohao Shi
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
| | | | - Yichao Yang
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
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10
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Kurbakov KA, Konorov EA, Minaev MY, Kuznetsova OA. Multiplex Real-Time PCR with HRM for Detection of Lactobacillus sakei and Lactobacillus curvatus in Food Samples. Food Technol Biotechnol 2019; 57:97-104. [PMID: 31316281 PMCID: PMC6600297 DOI: 10.17113/ftb.57.01.19.5983] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Optimization of fermentation processes requires monitoring the species composition of starter cultures and their growth during fermentation. Most starter cultures contain closely related species. Nowadays, high-resolution melting (HRM) analysis is extensively used for multiplex identification of closely related species. In the present paper, we applied real-time polymerase chain reaction (PCR) with HRM analysis for the detection and differentiation of Lactobacillus sakei and L. curvatus. A primer pair was selected for the site of the rpoA gene of Lactobacillus spp. Eleven starter cultures and fifteen fermented sausages with a known bacterial composition were successfully tested using real-time PCR with HRM analysis with the developed primer pair.
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Affiliation(s)
- Konstantin A Kurbakov
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina 26, 109316, Moscow, Russian Federation
| | - Evgenii A Konorov
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina 26, 109316, Moscow, Russian Federation.,Vavilov Institute of General Genetics, Gubkina 3, 119333, Moscow, Russian Federation.,Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Sechenov University, Malaya Pirogovskaya 20-1, 119435 Moscow, Russian Federation
| | - Mikhail Y Minaev
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina 26, 109316, Moscow, Russian Federation
| | - Oksana A Kuznetsova
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina 26, 109316, Moscow, Russian Federation
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11
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Identification and differentiation of Campylobacter species by high-resolution melting curve analysis. Microb Pathog 2017; 108:109-113. [DOI: 10.1016/j.micpath.2017.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 04/28/2017] [Accepted: 05/02/2017] [Indexed: 11/24/2022]
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