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Antimicrobial Resistance, Multilocus Sequence, and spa Typing of Staphylococcus aureus Isolated from Retail Raw Meat Products. BIOMED RESEARCH INTERNATIONAL 2022. [DOI: 10.1155/2022/6035987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
With a high capacity to acquire antimicrobial resistance, Staphylococcus aureus is an important pathogen causing severe infections in animals and humans. A total of 50 Staphylococcus aureus isolates from retail ground beef, chicken meat, and fish were characterized by antimicrobial resistance profiling, staphylococcal protein A gene (spa) typing, and multilocus sequence typing (MLST). The broth microdilution test results showed that all isolates were resistant to penicillin and sulphamethoxazole but had varying resistance rates to tetracycline (24%), erythromycin (4%), gentamicin (2%), ciprofloxacin (2%), trimethoprim (2%), and chloramphenicol (0%). The blaZ and sulI genes were detected in 100% of the isolates followed by grlA (94%), norA (92%), tetK (80%), chlA (60%), tetM (26%), aacA-aphD (2%), ermA (2%), fexA (0%), and dfrA (0%). Moreover, 26% of the isolates were multidrug-resistant, with five or more resistance genes. The spa typing analysis revealed 22 spa types, with t091 (16%), t1677 (8%), and t14538 (8%) being the most common, and one new spa type, t19851, was uncovered. MLST identified seven sequence types (STs), with ST7 (40%), ST15 (20%), and ST199 (13%) being the most common, and two STs (ST7435 and ST7436) were newly identified. In this study, S. aureus isolated from raw meat showed multidrug resistance and different clones associated with human infections. As a result, foods of animal origin may act as potential vehicles for transmission of multidrug-resistant S. aureus isolates, and the dissemination of potentially pathogenic clonal types, posing a health risk to humans.
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Inhibition of multidrug-resistant foodborne Staphylococcus aureus biofilms by a natural terpenoid (+)-nootkatone and related molecular mechanism. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107154] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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El-Aziz NKA, Tartor YH, El-Aziz Gharib AA, Ammar AM. Propidium Monoazide Quantitative Real-Time Polymerase Chain Reaction for Enumeration of Some Viable but Nonculturable Foodborne Bacteria in Meat and Meat Products. Foodborne Pathog Dis 2018; 15:226-234. [PMID: 29298099 DOI: 10.1089/fpd.2017.2356] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Foodborne infections due to bacterial pathogens are increasing worldwide. Given the surreptitious nature of viable but nonculturable (VBNC) bacteria, they largely remain a threat to public health and food safety due to their non-detectability through conventional plate count techniques. Hence, species-specific quantitative real-time polymerase chain reaction (PCR) (qPCR) alone and combined with the use of propidium monoazide (PMA) was used along with the plate count method to quantify VBNC Staphylococcus aureus, Bacillus cereus, Clostridium perfringens, and Enterobacteriaceae in fresh and processed meat samples. The major bacterial pathogen isolated was S. aureus (93%) followed by Enterobacteriaceae (80.33%), C. perfringens (26.33%), and B. cereus (21.33%); their total viable counts were mostly recorded in raw meat than examined meat products. PMA quantitative real-time PCR (PMA qRT-PCR) could detect and quantify VBNC bacteria in 90.48% of culture-negative samples. It affirmed the presence of VBNC S. aureus (n = 10), B. cereus (n = 8), C. perfringens (n = 6), and Enterobacteriaceae (n = 12) in either single or mixed bacterial contamination. The log10 mean values of VBNC bacterial counts were highly reported for C. perfringens and S. aureus (9.60 ± 0.449 and 8.27 ± 0.453 CFU/g, respectively) followed by Enterobacteriaceae (6.95 ± 0.564 CFU/g) and B. cereus (6.69 ± 0.749 CFU/g). Sequencing of rpoB gene of Enterobacteriaceae enabled the identification of Klebsiella pneumoniae complex, Enterobacter cloacae complex, and Salmonella Typhi, which have been reported to be capable of entry into the VBNC state. To our knowledge, this is the first report at least in Egypt that records the presence of VBNC cells in meat samples representing a strong threat to public health and food safety. Moreover, PMA qRT-PCR allowed a quick and unequivocal way of enumeration of VBNC foodborne bacteria.
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Affiliation(s)
- Norhan Khairy Abd El-Aziz
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, Egypt
| | - Yasmine Hasanine Tartor
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, Egypt
| | - Ahlam Abd El-Aziz Gharib
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, Egypt
| | - Ahmed Mohamed Ammar
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, Egypt
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Ma Y, Zhao Y, Tang J, Tang C, Chen J, Liu J. Antimicrobial susceptibility and presence of resistance & enterotoxins/enterotoxin-likes genes in Staphylococcus aureusfrom food. CYTA - JOURNAL OF FOOD 2018. [DOI: 10.1080/19476337.2017.1340341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yisalan Ma
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Yanying Zhao
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Junni Tang
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Cheng Tang
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Juan Chen
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Ji Liu
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
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Osimani A, Cardinali F, Aquilanti L, Garofalo C, Roncolini A, Milanović V, Pasquini M, Tavoletti S, Clementi F. Occurrence of transferable antibiotic resistances in commercialized ready-to-eat mealworms (Tenebrio molitor L.). Int J Food Microbiol 2017; 263:38-46. [PMID: 29028569 DOI: 10.1016/j.ijfoodmicro.2017.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 09/06/2017] [Accepted: 10/03/2017] [Indexed: 12/18/2022]
Abstract
The present study aimed to assess the occurrence of transferable determinants conferring resistance to tetracyclines, macrolide-lincosamide-streptogramin B, vancomycin, beta-lactams, and aminoglycosides in 40 samples of commercialized edible mealworms (Tenebrio molitor L.) purchased from European Union (EU) and non-EU producers. A high prevalence of tet(K) was observed in all of the samples assayed, with percentages of PCR-based positivity that ranged from 80% (samples from Thailand) to 100% (samples from the Netherlands, Belgium and France). For macrolides, erm(B) prevailed, being detected in 57.5% of the samples assayed, whereas erm(A) and erm(C) were detected with lower frequencies. Genes for resistance to vancomycin were only detected in samples produced in France and Belgium, with 90% and 10% of the samples being positive for vanA, respectively. Beta-lactamase genes were found with low occurrence, whereas the gene aac-aph, conferring high resistance to aminoglycosides, was found in 40% of the samples produced in the Netherlands and Belgium and 20% of the samples produced in Thailand. The results of Principal Coordinate Analysis and Principal Component Analysis depicted a clean separation of the samples collected from the four producers based on the distribution of the 12 AR determinants considered. Given the growing interest on the use of mealworms as a novel protein source, AR detection frequencies found in the present study suggest further investigation into the use of antibiotics during rearing of this insect species and more extensive studies focused on the factors that can affect the diffusion of transferable ARs in the production chain. Until such studies are completed, prudent use of antibiotics during rearing of edible insects is recommended.
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Affiliation(s)
- Andrea Osimani
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Federica Cardinali
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Lucia Aquilanti
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy.
| | - Cristiana Garofalo
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Andrea Roncolini
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Vesna Milanović
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Marina Pasquini
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Stefano Tavoletti
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Francesca Clementi
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
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Cui H, Yuan L, Li C, Lin L. Control of Staphylococcus aureus
on soya bean products by D-amino acids/nutmeg essential oil-co-loaded nanofilms. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiying Cui
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Lu Yuan
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Changzhu Li
- Hunan Academy of Forestry; Changsha 410007 China
| | - Lin Lin
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
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Milanović V, Osimani A, Aquilanti L, Tavoletti S, Garofalo C, Polverigiani S, Litta-Mulondo A, Cocolin L, Ferrocino I, Di Cagno R, Turroni S, Lazzi C, Pellegrini N, Clementi F. Occurrence of antibiotic resistance genes in the fecal DNA of healthy omnivores, ovo-lacto vegetarians and vegans. Mol Nutr Food Res 2017; 61. [PMID: 28464483 DOI: 10.1002/mnfr.201601098] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/12/2017] [Accepted: 04/18/2017] [Indexed: 01/08/2023]
Abstract
SCOPE The effects of long-term omnivore, ovo-lacto vegetarian and vegan diets on the occurrence of 12 antibiotic resistance (AR) genes in the human gut were studied. METHODS AND RESULTS The feces of 144 healthy volunteers recruited from Turin, Bari, Bologna, and Parma were screened for the occurrence of genes conferring resistance to tetracyclines, macrolide-lincosamide-streptogramin B, vancomycin, and β-lactams. Overall, erm(B), tet(W) and tet(M) were detected at the highest frequency. A low effect from the diet on the AR gene distribution emerged, with tet(K) and vanB occurring at a lower and higher frequency in vegans and omnivores, respectively. A correlation of the intake of eggs, milk from animal sources and cheese with an increased occurrence of tet(K) was observed, together with a higher incidence of vanB in consumers of eggs, poultry meat, fish and seafood. When the detection frequencies of AR genes in volunteers from Bari and the other sites were comparatively evaluated, a north-to-south gradient was observed, whereas no effect of sex or age was highlighted. Except for tet(K), a negligible three-factor interaction was seen. CONCLUSION A high impact of the geographical location on AR gene distribution was seen in the cohort of subjects analyzed, irrespective of their dietary habits.
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Affiliation(s)
- Vesna Milanović
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Andrea Osimani
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Lucia Aquilanti
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Stefano Tavoletti
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Cristiana Garofalo
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Serena Polverigiani
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Alice Litta-Mulondo
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
| | - Luca Cocolin
- Department of Agricultural, Forest and Food Science (DISAFA), University of Turin, Grugliasco, Italy
| | - Ilario Ferrocino
- Department of Agricultural, Forest and Food Science (DISAFA), University of Turin, Grugliasco, Italy
| | - Raffaella Di Cagno
- Faculty of Science and Technology, Libera Università di Bolzano, Bolzano, Italy
| | - Silvia Turroni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Camilla Lazzi
- Department of Food Science, University of Parma, Parma, Italy
| | | | - Francesca Clementi
- Department of Agricultural, Food and Environmental Sciences (D3A), Università Politecnica delle Marche, Ancona, Italy
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