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Ito S, Kishimoto M. Development of a Sampling and Real-time PCR Method for the Quantitative Detection of Campylobacter spp. in Retail Chicken Meat Without DNA Extraction. J Food Prot 2023; 86:100028. [PMID: 36916587 DOI: 10.1016/j.jfp.2022.100028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022]
Abstract
Campylobacter food poisoning is caused by consumption of the contaminated foods, especially poultry meat. Continuous quantitative measurement of Campylobacter spp. in contaminated foods is crucial to develop preventive measures. We developed a direct-qPCR method for determining the viable cell counts of Campylobacter spp. using qPCR without DNA extraction from enriched food samples and a sampling method (the wrap procedure) in which the sample is wrapped in a sheet, different from the conventional homogenization procedure. The viable cell counts of Campylobacter spp. before and after enrichment of the samples sampled using the wrap and homogenization procedures from chicken samples inoculated with Campylobacter jejuni were determined using the culture method, and the cycle threshold (CT) values after enrichment were determined using the direct-qPCR. An enrichment regression equation was generated from the viable cell counts obtained before and after enrichment, and a direct-qPCR regression equation was generated from the CT values and viable cell counts obtained after enrichment, enabling the viable cell counts before enrichment to be estimated from the CT values. Estimated viable cell counts were similar for the culture method when sampled by the homogenization procedure, but lower for the wrap procedure. However, the detection rate of direct-qPCR was 37.5% for liver and 89.7% for breast fillet using the homogenization procedure, whereas using the wrap procedure, it was 100% for both samples. The detection rate of direct-qPCR for retail chicken was 30.4-35.7% for the homogenization procedure, and 85.7-100% for the wrap procedure. Colonies were observed using the culture method, but their quantification was difficult due to swarming or their low number. However, estimating viable cell counts using the combination of wrap procedure and direct-qPCR methods is possible. The developed method can provide baseline data for the risk assessment Campylobacter food poisoning.
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Affiliation(s)
- Satoshi Ito
- Faculty of Nutrition, Kobe Gakuin University, Kobe, Hyogo 651-2113, Japan.
| | - Michiru Kishimoto
- Graduate School of Nutritional Sciences, Nagoya University of Arts and Sciences Graduate School, Nagoya, Aichi 470-0196, Japan
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2
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Lanzl M, Zwietering M, Abee T, den Besten H. Combining enrichment with multiplex real-time PCR leads to faster detection and identification of Campylobacter spp. in food compared to ISO 10272–1:2017. Food Microbiol 2022; 108:104117. [DOI: 10.1016/j.fm.2022.104117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/26/2022] [Accepted: 08/14/2022] [Indexed: 11/16/2022]
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3
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Shange N, Gouws PA, Hoffman LC. Prevalence of Campylobacter and Arcobacter Species in Ostriches from Oudtshoorn, South Africa. J Food Prot 2020; 83:722-728. [PMID: 31855449 DOI: 10.4315/jfp-19-472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/11/2019] [Indexed: 11/11/2022]
Abstract
ABSTRACT Cloacal swabs were obtained from live ostriches reared on 30 different farms situated in South Africa (Oudtshoorn) during the period of June 2018 to July 2019 to determine the prevalence of Campylobacter and Arcobacter species. PCR (n = 168 pooled cloacal swabs), the Cape Town protocol (n = 836 cloacal swabs), International Organization for Standardization ISO 10272-1:2006 (n = 836 cloacal swabs), and a selective Arcobacter spp. method (n = 415 cloacal swabs) were used for detection. PCR determined an average prevalence of 24.63% for species belonging to the Campylobacteraceae family. The ISO 10272-1:2006 method determined a Campylobacter spp. prevalence level of 16.83%, while the Cape Town protocol could not detect Campylobacter spp. For Arcobacter spp., a prevalence of 18.80 and 39.14% was determined with the Cape Town protocol and the selective Arcobacter spp. method, respectively. Results showed that prevalence levels could be influenced by season, the source of water, and the presence of wild water birds. Higher prevalence levels for Campylobacter spp. (23.38%) and Arcobacter spp. (68%) were detected in ostriches sampled during spring and autumn, respectively. Higher prevalence levels for Campylobacter spp. (25.23%) and Arcobacter spp. (44.50%) were detected in ostriches reared on farms that made use of borehole water. Higher prevalence levels for Arcobacter spp. (44.38%) were seen in ostriches reared on farms with wild water birds. This research shows that ostriches from South Africa can be considered as potential carriers of species belonging to the Campylobacteraceae family. HIGHLIGHTS
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Affiliation(s)
| | - Pieter A Gouws
- Department of Food Science.,Centre for Food Safety, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Louwrens C Hoffman
- Department of Animal Sciences.,Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Australia
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4
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Estimating the performance of four culture media used for enumeration and detection of Campylobacter species in chicken meat. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Chon JW, Kim YJ, Rashid F, Sung K, Khan S, Kim H, Seo KH. Improvement of Bolton broth by supplementation with tazobactam for the isolation of Campylobacter from chicken rinses. Poult Sci 2018; 97:289-293. [PMID: 29112760 DOI: 10.3382/ps/pex169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 10/19/2017] [Indexed: 11/20/2022] Open
Abstract
Overgrowth of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (E. coli) on Campylobacter media prevents the latter's selective isolation, thereby making the improvement of Campylobacter-selective media necessary. We evaluated tazobactam (an ESBL inhibitor) to supplement Bolton enrichment broth (Tz-Bolton broth) for the selective isolation of Campylobacter in chicken carcass rinses. First, using 20 strains of ESBL-producing E. coli and 13 Campylobacter strains, we found 4 μg/mL of tazobactam to be optimal for inhibiting the ESBL-producing E. coli while allowing the growth of all tested Campylobacter strains. Next, 80 whole chicken carcasses were rinsed with buffered peptone water (BPW), and 25 mL of BPW rinse was mixed with 2 × blood-free Bolton broth (25 mL) with or without tazobactam followed by incubation at 42°C for 48 h under microaerobic conditions. A loopful of the incubated broth was inoculated on modified charcoal-cefoperazone-deoxycholate agar (mCCDA) and microaerobically incubated at 42°C for 48 h. The tazobactam supplemented Bolton broth showed a higher Campylobacter isolation rate (38.8%, p < 0.05) than normal Bolton broth (15%). Moreover, the number of mCCDA plates with non-Campylobacter was much lower (p < 0.05) after enrichment in Tz-Bolton broth (0%) than in the normal Bolton broth (80%), suggesting that selectivity of the modified broth was superior to normal Bolton broth.
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Affiliation(s)
- Jung-Whan Chon
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Young-Ji Kim
- KU center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - Farzana Rashid
- Department of Zoology, Lahore College for Women University, Jail Road, Lahore, Pakistan
| | - Kidon Sung
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Saeed Khan
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Hyunsook Kim
- Department of Food & Nutrition College of Human Ecology Hanyang University 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Kun-Ho Seo
- KU center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
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6
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Jo Y, Oh HM, Yoon Y, Lee SY, Ha JH, Kim WI, Kim HY, Han S, Kim SR. Enrichment Broth for the Detection of Campylobacter jejuni and Campylobacter coli in Fresh Produce and Poultry. J Food Prot 2017; 80:1842-1850. [PMID: 28990821 DOI: 10.4315/0362-028x.jfp-16-450] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 04/12/2017] [Indexed: 11/11/2022]
Abstract
Although campylobacteriosis caused by Campylobacter jejuni and Campylobacter coli has been increasingly reported worldwide owing to the consumption of contaminated poultry and fresh produce, the current detection protocols are not selective enough to inhibit unspecific microbes other than these pathogens. Five antibiotics were separately added to Bolton broth, and the survival rates of 18 Campylobacter spp. and 79 non-Campylobacter spp. were evaluated. The survival rate of the non-Campylobacter spp. was the lowest in Bolton broth with rifampin (6.3%), followed by cefsulodin (12.7%), novobiocin (16.5%), and potassium tellurite and sulfamethozaxole (both 17.7%). Also the most effective concentration of rifampin was found to be 12.5 mg/L, which markedly inhibited non-Campylobacter strains while not affecting the survival of Campylobacter strains. After the Campylobacter spp. were enriched in Bolton broth supplemented with 12.5 mg/L rifampin (R-Bolton broth), CampyFood Agar (CFA) was found to be better in selectively isolating the pathogens in the enrichment broth than the International Organization for Standardization method of using modified charcoal cefoperazone deoxycholate agar (mCCDA) for this step. When applied to natural food samples-here, romaine lettuce, pepper, cherry tomato, Korean leek, and chicken-the R-Bolton broth-CFA combination decreased the number of false-positive results by 50.0, 4.2, 20.8, 50.0, and 94.4%, respectively, compared with the International Organization for Standardization method (Bolton broth-mCCDA combination). These results demonstrate that the combination of R-Bolton broth and CFA is more efficient in detecting C. jejuni and C. coli in poultry and fresh produce and thus should replace the Bolton broth-mCCDA combination.
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Affiliation(s)
- Youmi Jo
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea.,Present address: Agromaterial Assessment Division, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Hye-Min Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Yohan Yoon
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Sun-Young Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong 47262, Republic of Korea
| | - Ji-Hyoung Ha
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea.,Present address: Hygienic Safety and Analysis Center, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Won-Il Kim
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Hwang-Yong Kim
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Sanghyun Han
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Se-Ri Kim
- Microbial Safety Team, Department of Agro-Food Safety & Crop Protection, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
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7
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Chon JW, Kim YJ, Kim YJ, Jung JY, Bae D, Khan S, Seo KH, Sung K. Addition of Rifampicin to Bolton Broth to Inhibit Extended-Spectrum β-Lactamase-ProducingEscherichia colifor the Detection ofCampylobacter. J Food Sci 2017. [DOI: 10.1111/1750-3841.13761] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jung-Whan Chon
- Div. of Microbiology, Natl. Center for Toxicological Research; US Food and Drug Administration; Jefferson AR 72079 U.S.A
| | - Young-Ji Kim
- KU Center for One Health, College of Veterinary Medicine; Konkuk Univ.; Hwayang-dong Gwangjin-gu Seoul 05029 Republic of Korea
| | - Young-Jo Kim
- Ministry of Food and Drug Safety; Osong 28159 Republic of Korea
| | - Ji Young Jung
- Div. of Microbiology, Natl. Center for Toxicological Research; US Food and Drug Administration; Jefferson AR 72079 U.S.A
| | - Dongryeoul Bae
- Div. of Microbiology, Natl. Center for Toxicological Research; US Food and Drug Administration; Jefferson AR 72079 U.S.A
| | - Saeed Khan
- Div. of Microbiology, Natl. Center for Toxicological Research; US Food and Drug Administration; Jefferson AR 72079 U.S.A
| | - Kun-Ho Seo
- KU Center for One Health, College of Veterinary Medicine; Konkuk Univ.; Hwayang-dong Gwangjin-gu Seoul 05029 Republic of Korea
| | - Kidon Sung
- Div. of Microbiology, Natl. Center for Toxicological Research; US Food and Drug Administration; Jefferson AR 72079 U.S.A
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8
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Chon JW, Kim HS, Kim DH, Kim YJ, Sung K, Kim H, Seo KH. Efficacy of Syringe Filtration for the Selective Isolation of Campylobacter from Chicken Carcass Rinse. J Food Prot 2017; 80:1050-1053. [PMID: 28513216 DOI: 10.4315/0362-028x.jfp-16-470] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We investigated the efficacy of syringe filtration for selective isolation of Campylobacter from chicken carcass rinse by combining syringe filtration with the conventional culture method. Whole chicken carcass rinses were incubated in Bolton enrichment broth, set aside or subjected to syringe filtration, and streaked on Campy-Cefex agar with or without cefoperazone antibiotic supplement. Compared with the conventional method without filtration, 0.65-μm-pore-size syringe filtration resulted in a significantly higher number of Campylobacter-positive samples (23.8 to 37.5% versus 70.0 to 72.5%; P < 0.05), a lower number of plates contaminated with non-Campylobacter (93.8% versus 6.3 to 26.3%), and a lower growth index (1 = growth of a few colonies; 2 = growth of colonies on about half of the plate; and 3 = growth on most of the plate) for competing microbiota (2.9 to 3.0 versus 1.2 to 1.4). When syringe filtration was applied, agar plates containing the antibiotic had significantly less contamination (6.3% versus 26.3%; P < 0.05) and a lower growth index (1.2 versus 1.4) compared with plates without the antibiotic, although the Campylobacter isolation rate was similar (P > 0.05). Syringe filtration combined with conventional enrichment improved the rate and selectivity of Campylobacter isolation from chicken carcasses.
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Affiliation(s)
- Jung-Whan Chon
- 1 U.S. Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, Arkansas 72079, USA
| | - Hong-Seok Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - Dong-Hyeon Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - Young-Ji Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - Kidon Sung
- 1 U.S. Food and Drug Administration, National Center for Toxicological Research, Division of Microbiology, Jefferson, Arkansas 72079, USA
| | - Hyunsook Kim
- 3 Department of Food & Nutrition, College of Human Ecology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Kun-Ho Seo
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
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9
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Kim YJ, Whan CJ, Kim HS, Kim KY, Yim JH, Cho SH, Seo KH. Improvement of Karmali Agar by Supplementation with Tazobactam for Detecting Campylobacter in Raw Poultry. J Food Prot 2016; 79:1982-1985. [PMID: 28221899 DOI: 10.4315/0362-028x.jfp-16-105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this study, Karmali agar was modified by adding tazobactam (T-Karmali agar) to suppress the growth of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli , which frequently contaminates raw poultry meat. By inoculating 30 Campylobacter spp. strains and 25 ESBL-producing E. coli strains onto Karmali agar and T-Karmali agar containing various concentrations of the antibacterial agent, we determined the optimum concentration of tazobactam to be 4 mg/liter. The Campylobacter spp. isolation rate on T-Karmali agar (13.3%) was higher than that on Karmali agar (8.3%), although the difference was not significant (P > 0.05). However, T-Karmali agar showed a significantly greater selectivity than Karmali agar, as evaluated by comparing the numbers of contaminated agar plates (20.8 versus 82.5%; P < 0.05) and the growth indexes (1.36 versus 2.83) of competing flora. The predominant competing flora on Karmali and T-Karmali agar were identified as ESBL-producing E. coli . Thus, T-Karmali agar might be effective for determining the real prevalence of Campylobacter in raw poultry and, especially, contamination with ESBL-producing E. coli .
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Affiliation(s)
- Young-Ji Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Chon-Jung Whan
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Hong-Seok Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Kwang-Yeop Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Jin-Hyeok Yim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Seung-Hak Cho
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Heungdeok-Gu, Cheongju 363-951, South Korea
| | - Kun-Ho Seo
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul 143-701, South Korea
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Kojima C, Kishimoto M, Ezaki T. Distribution of Antimicrobial Resistance in Campylobacter Strains Isolated from Poultry at a Slaughterhouse and Supermarkets in Japan. Biocontrol Sci 2016; 20:179-84. [PMID: 26412697 DOI: 10.4265/bio.20.179] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Fifty strains of Campylobacter jejuni/coli were detected in 108 specimens of chicken meat and organs sampled at six supermarkets and one poultry slaughterhouse (large scale) between April and October 2013 (isolation rates: 84.8% from the slaughterhouse, 29.3% from the supermarkets). 46/50 strains were successfully recovered and subjected to the E-test to examine their susceptibility to three fluoroquinolone antibacterial agents authorized for use in poultry in Japan: enrofloxacin (ERFX), ofloxacin (OFLX), and norfloxacin (NLFX). 29 isolates (63%) were resistant to all three agents and 2 isolates (4.3%) were resistant to two agents (ERFX and OFLX). The resistance rates of strains isolated fom the supermarkets and slaughterhouse were 61.9% and 72.0%, respectively. Because the chickens processed at the slaughterhouse were raised without the use of fluoroquinolone, the results did not suggest a positive relationship between the use of these agents and the distribution of antimicrobial-resistant bacteria. Susceptibility to macrolide antibiotics (erythromycin [EM]) was also tested in 42 strains, and one strain (2.4%), C. coli from a retailer sample, showed resistance. Previous studies have detected high rates of fluoroquinolone-resistant strains, suggesting an expanding distribution of resistant bacteria. The detection of EM-resistant bacteria downstream in the food distribution chain (i.e., closer to consumers) is a concern for human health.
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Affiliation(s)
- Chiaki Kojima
- Department of Microbiology, Gifu University School of Medicine
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11
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Chon JW, Kim YJ, Kim HS, Kim DH, Jeong DK, Seo KH. Evaluation of Tazobactam-Supplemented, Modified Charcoal-Cefoperazone-Deoxycholate Agar for Qualitative Detection of Campylobacter from Chicken Carcass Rinse. Foodborne Pathog Dis 2016; 13:251-4. [PMID: 27043031 DOI: 10.1089/fpd.2015.2062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Overgrowth of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli on modified charcoal-cefoperazone-deoxycholate agar (mCCDA) is the most common confounding factor for the isolation of Campylobacter from poultry samples. mCCDA modified by supplementation with tazobactam, an ESBL inhibitor, was evaluated for Campylobacter isolation from chicken carcass rinse with regard to isolation rate and selectivity. In total, 120 whole chicken carcasses purchased from retail stores were rinsed with buffered peptone water enriched with 2× blood-free Bolton broth at 42°C for 48 h and then inoculated onto mCCDA with and without tazobactam supplementation (mCCDA or T-mCCDA) at 42°C for 48 h under microaerobic conditions. Suspect colonies were subcultured and confirmed by colony PCR. Plates with tazobactam exhibited a higher Campylobacter isolation rate (56.7% vs. 30.8%, p < 0.05) and selectivity (0.8 vs. 83.3% plates contaminated with non-Campylobacter, p < 0.05) than mCCDA. Thus, tazobactam-supplemented mCCDA would be a useful option for qualitative detection of Campylobacter in chicken carcass rinse.
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Affiliation(s)
- Jung-Whan Chon
- 1 Department of Animal Science and Technology, Konkuk University , Seoul, Republic of Korea
| | - Young-Ji Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University , Seoul, Republic of Korea
| | - Hong-Seok Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University , Seoul, Republic of Korea
| | - Dong-Hyeon Kim
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University , Seoul, Republic of Korea
| | - Dong Kwan Jeong
- 3 Department of Food and Nutrition, Kosin University , Pusan, Republic of Korea
| | - Kun-Ho Seo
- 2 Center for One Health, College of Veterinary Medicine, Konkuk University , Seoul, Republic of Korea
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12
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Chon JW, Kim YJ, Kim HS, Kim DH, Kim H, Song KY, Sung K, Seo KH. Evaluation of cephamycins as supplements to selective agar for detecting Campylobacter spp. in chicken carcass rinses. Int J Food Microbiol 2016; 223:75-8. [PMID: 26915052 DOI: 10.1016/j.ijfoodmicro.2016.01.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 11/30/2015] [Accepted: 01/25/2016] [Indexed: 11/17/2022]
Abstract
Although cefoperazone is the most commonly used antibiotic in Campylobacter-selective media, the distribution of cefoperazone-resistant bacteria such as extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli is increasing. Here we evaluated the potential of cephamycins for use as supplements to improve modified charcoal-cefoperazone-deoxycholate agar (mCCDA) by replacing cefoperazone with the same concentrations (32 mg/L) of cefotetan (modified charcoal-cefotetan-deoxycholate agar, mCCtDA) and cefoxitin (modified charcoal-cefoxitin-deoxycholate agar, mCCxDA). In chicken carcass rinse samples, the number of mCCDA plates detecting for Campylobacter (18/70, 26%) was significantly lower than that of mCCtDA (42/70, 60%) or mCCxDA plates (40/70, 57%). The number of mCCDA plates (70/70, 100%) that were contaminated with non-Campylobacter species was significantly higher than that of mCCtDA (20/70, 29%) or mCCxDA plates (21/70, 30%). The most common competing species identified using mCCDA was ESBL-producing E. coli, while Pseudomonas species frequently appeared on mCCtDA and mCCxDA.
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Affiliation(s)
- Jung-Whan Chon
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR 72079, USA
| | - Young-Ji Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hong-Seok Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Dong-Hyeon Kim
- Center for One Health, College of Veterinary Medicine, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyunsook Kim
- Department of Food & Nutrition College of Human Ecology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Kwang-Young Song
- Center for One Health, College of Veterinary Medicine, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Kidon Sung
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR 72079, USA
| | - Kun-Ho Seo
- Center for One Health, College of Veterinary Medicine, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Chon JW, Kim YJ, Kim HS, Kim DH, Kim H, Song KY, Seo KH. Supplementation of Bolton broth with triclosan improves detection of Campylobacter jejuni and Campylobacter coli in chicken carcass rinse. Int J Food Microbiol 2014; 181:37-9. [DOI: 10.1016/j.ijfoodmicro.2014.04.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 03/28/2014] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
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14
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Chon JW, Kim HS, Kim H, Oh DH, Seo KH. Evaluation of potassium-clavulanate-supplemented modified charcoal-cefoperazone-deoxycholate agar for enumeration of Campylobacter in chicken carcass rinse. J Food Sci 2014; 79:M923-6. [PMID: 24787901 DOI: 10.1111/1750-3841.12388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/23/2013] [Indexed: 11/30/2022]
Abstract
Potassium-clavulanate-supplemented modified charcoal-cefoperazone-deoxycholate agar (C-mCCDA) that was described in our previous study was compared with original mCCDA for the enumeration of Campylobacter in pure culture and chicken carcass rinse. The quantitative detection of viable Campylobacter cells from a pure culture, plated on C-mCCDA, is statistically similar (P > 0.05) to mCCDA. In total, 120 chickens were rinsed using 400 mL buffered peptone water. The rinses were inoculated onto C-mCCDA and mCCDA followed by incubation at 42 °C for 48 h. There was no statistical difference between C-mCCDA (45 of 120 plates; mean count, 145.5 CFU/mL) and normal mCCDA (46 of 120 plates; mean count, 160.8 CFU/mL) in the isolation rate and recovery of Campylobacter (P > 0.05) from chicken carcass rinse. The Pearson correlation coefficient value for the number of Campylobacter cells recovered in the 2 media was 0.942. However, the selectivity was much better on C-mCCDA than on mCCDA plates (P < 0.05). Significantly fewer C-mCCDA plates (33 out of 120 plates; mean count, 1.9 CFU/mL) were contaminated with non-Campylobacter cells than the normal mCCDA plates (67 out of 120 plates; mean count, 27.1 CFU/mL). The C-mCCDA may provide improved results for enumeration of Campylobacter in chicken meat alternative to mCCDA with its increased selectivity the modified agar possess.
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Affiliation(s)
- Jung-Whan Chon
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk Univ, Seoul, The Republic of Korea
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15
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Asakura H, Brueggemann H, Makino SI, Sugita-Konishi Y. Molecular approaches for the classification of microbial pathogens of public health significance. BIOMED RESEARCH INTERNATIONAL 2014; 2014:725801. [PMID: 24696863 PMCID: PMC3947820 DOI: 10.1155/2014/725801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 01/14/2014] [Indexed: 11/17/2022]
Affiliation(s)
- Hiroshi Asakura
- Division of Biomedical Food Research, National Institute of Health Sciences, Kamiyoga 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan
| | - Holger Brueggemann
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, Bartholin Building 1242, Room 433, 8000 Aarhus C, Denmark
| | - Sou-ichi Makino
- Department of Living Science, Kyoto Seibo College, Fukakusa Taya-cho, Fushimi-ku, Kyoto 612-0878, Japan
| | - Yoshiko Sugita-Konishi
- Department of Food and Life Sciences, The Graduate School of Life and Environmental Sciences, Azabu University, 1-17-71, Fuchinobe Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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16
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A new protocol to detect multiple foodborne pathogens with PCR dipstick DNA chromatography after a six-hour enrichment culture in a broad-range food pathogen enrichment broth. BIOMED RESEARCH INTERNATIONAL 2013; 2013:295050. [PMID: 24364031 PMCID: PMC3865639 DOI: 10.1155/2013/295050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/05/2013] [Accepted: 11/05/2013] [Indexed: 11/26/2022]
Abstract
A quick foodborne pathogen screening method after six-hour enrichment culture with a broad-range food pathogen enrichment broth is described. Pathogenic factors of Salmonella enterica, Shigella spp., enteroinvasive Escherichia coli, and enterohemorrhagic E. coli are amplified with a cocktail primer and rapid polymerase chain reaction (PCR), which finishes amplification in 30 min. The PCR amplicon was differentiated with a dipstick DNA chromatography assay in 5–10 min. Starting from a four- to six-hour enrichment culture, this assay was finished within 45 min. Detection sensitivity of this protocol was less than 2.5 CFU/25 g for S. enterica and 3.3 CFU/25 g for enterohemorrhagic E. coli in spiked ground meat experiments.
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17
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Rohonczy K, Rantsiou K, Cocolin L. Modified Enrichment Strategies Coupled with Molecular and Conventional Methods to Detect and Quantify C
ampylobacter jejuni
in Chicken Meat from the Market. J Food Saf 2013. [DOI: 10.1111/jfs.12081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Kalliopi Rantsiou
- Università di Torino; Dipartimento di Scienze Agrarie, Forestali e Alimentari; via Leonardo da Vinci, 44 Grugliasco Torino 10095 Italy
| | - Luca Cocolin
- Università di Torino; Dipartimento di Scienze Agrarie, Forestali e Alimentari; via Leonardo da Vinci, 44 Grugliasco Torino 10095 Italy
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Ugarte-Ruiz M, Wassenaar TM, Gómez-Barrero S, Porrero MC, Navarro-Gonzalez N, Domínguez L. The effect of different isolation protocols on detection and molecular characterization of Campylobacter from poultry. Lett Appl Microbiol 2013; 57:427-35. [PMID: 23837671 DOI: 10.1111/lam.12130] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/30/2013] [Accepted: 07/01/2013] [Indexed: 12/19/2022]
Abstract
We determined whether different methods to isolate Campylobacter (including the ISO standard 10272:2006-1) affected the genotypes detectable from poultry, at three points during slaughter: caecal content, neck skin and meat. Carcasses from 28 independent flocks were thus sampled (subset A). In addition, ten neck skin samples from four flocks, ten caecal samples from ten different flocks and ten unrelated meat samples obtained from local supermarkets were collected (subset B). Campylobacter was isolated using eight different protocols: with and without enrichment using Bolton broth, Preston broth or Campyfood broth (CFB), followed by culture on either modified Charcoal Cefoperazone Deoxycholate Agar (mCCDA) or Campyfood agar (CFA). All obtained isolates were genotyped for flaA-SVR, and over half of the isolates were also typed by MLST. The strain richness, as a measure of number of detected fla-genotypes, obtained from subset A neck skin and caecal samples was higher than that of meat samples. In half of the cases, within a flock, at least one identical fla-genotype was obtained at all three slaughter stages, suggestive of autologous contamination of carcasses. Enrichment reduced the observed richness of isolates, while CFA plates increased richness compared to mCCDA plates, irrespective of inclusion of an enrichment step. Because the isolation protocol used influences both the yield and the fla-genotype richness obtained from poultry, this variable should be taken into account when different studies are being compared.
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Affiliation(s)
- M Ugarte-Ruiz
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense de Madrid, 28040 Madrid, Spain
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