51
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Hu S, Yu Y, Zhou D, Li R, Xiao X, Wu H. Global transcriptomic Acid Tolerance Response in Salmonella Enteritidis. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.02.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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52
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Influence of ethanol adaptation on Salmonella enterica serovar Enteritidis survival in acidic environments and expression of acid tolerance-related genes. Food Microbiol 2018; 72:193-198. [DOI: 10.1016/j.fm.2017.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 10/18/2017] [Accepted: 12/07/2017] [Indexed: 12/13/2022]
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53
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Moraes JO, Cruz EA, Souza EGF, Oliveira TCM, Alvarenga VO, Peña WEL, Sant'Ana AS, Magnani M. Predicting adhesion and biofilm formation boundaries on stainless steel surfaces by five Salmonella enterica strains belonging to different serovars as a function of pH, temperature and NaCl concentration. Int J Food Microbiol 2018; 281:90-100. [PMID: 29843904 DOI: 10.1016/j.ijfoodmicro.2018.05.011] [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: 08/21/2017] [Revised: 04/06/2018] [Accepted: 05/10/2018] [Indexed: 12/20/2022]
Abstract
This study aimed to assess the capability of 97 epidemic S. enterica strains belonging to 18 serovars to form biofilm. Five strains characterized as strong biofilm-producers, belonging to distinct serovars (S. Enteritidis 132, S. Infantis 176, S. Typhimurium 177, S. Heidelberg 281 and S. Corvallis 297) were assayed for adhesion/biofilm formation on stainless steel surfaces. The experiments were conducted in different combinations of NaCl (0, 2, 4, 5, 6, 8 and 10% w/v), pH (4, 5, 6 and 7) and temperatures (8 °C, 12 °C, 20 °C and 35 °C). Only adhesion was assumed to occur when S. enterica counts were ≥3 and <5 log CFU/cm2, whereas biofilm formation was defined as when the counts were ≥5 log CFU/cm2. The binary responses were used to develop models to predict the probability of adhesion/biofilm formation on stainless steel surfaces by five strains belonging to different S. enterica serovars. A total of 99% (96/97) of the tested S. enterica strains were characterized as biofilm-producers in the microtiter plate assays. The ability to form biofilm varied (P < 0.05) within and among the different serovars. Among the biofilm-producers, 21% (20/96), 45% (43/96), and 35% (34/96) were weak, moderate and strong biofilm-producers, respectively. The capability for adhesion/biofilm formation on stainless steel surfaces under the experimental conditions studied varied among the strains studied, and distinct secondary models were obtained to describe the behavior of the five S. enterica tested. All strains showed adhesion at pH 4 up to 4% of NaCl and at 20 °C and 35 °C. The probability of adhesion decreased when NaCl concentrations were >8% and at 8 °C, as well as in pH values ≤ 5 and NaCl concentrations > 6%, for all tested strains. At pH 7 and 6, biofilm formation for S. Enteritidis, S. Infantis, S. Typhimurium, S. Heidelberg was observed up to 6% of NaCl at 35 °C and 20 °C. The predicted boundaries for adhesion were pH values < 5 and NaCl ≥ 4% and at temperatures <20 °C. For biofilm formation, the predicted boundaries were pH values < 5 and NaCl concentrations ≥ 2% and at temperatures <20 °C for all strains. The secondary models obtained describe the variability in boundaries of adhesion and biofilm formation on stainless steel by five strains belonging to different S. enterica serovars. The boundary models can be used to predict adhesion and biofilm formation ability on stainless steel by S. enterica as affected by pH, NaCl and temperature.
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Affiliation(s)
- Juliana O Moraes
- Department of Agroindustry, Federal Institute of Alagoas, Piranhas, State of Alagoas, Brazil
| | - Ellen A Cruz
- Department of Agroindustry, Federal Institute of Alagoas, Piranhas, State of Alagoas, Brazil
| | - Enio G F Souza
- Department of Agroecology, Federal Institute of Alagoas, Piranhas, State of Alagoas, Brazil
| | - Tereza C M Oliveira
- Department of Food Science and Technology, State University of Londrina, Paraná, Brazil
| | - Verônica O Alvarenga
- Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, State of São Paulo, Brazil
| | - Wilmer E L Peña
- Department of Food Technology, Federal University of Viçosa, Minas Gerais, Brazil
| | - Anderson S Sant'Ana
- Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, State of São Paulo, Brazil
| | - Marciane Magnani
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Technology Center, Federal University of Paraíba, João Pessoa, Paraíba, Brazil.
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54
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Biological and regulatory roles of acid-induced small RNA RyeC in Salmonella Typhimurium. Biochimie 2018; 150:48-56. [PMID: 29730297 DOI: 10.1016/j.biochi.2018.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/01/2018] [Indexed: 12/23/2022]
Abstract
Salmonella Typhimurium is an enteric pathogen that has evolved masterful strategies to enable survival under stress conditions both within and outside a host. The acid tolerance response (ATR) is one such mechanism that enhances the viability of acid adapted bacteria to lethal pH levels. While numerous studies exist on the protein coding components of this response, there is very little data on the roles of small RNAs (sRNAs). These non-coding RNA molecules have recently been shown to play roles as regulators of bacterial stress response and virulence pathways. They function through complementary base pairing interactions with target mRNAs and affect their translation and/or stability. There are also a few that directly bind to proteins by mimicking their respective targets. Here, we identify several sRNAs expressed during the ATR of S. Typhimurium and characterize one highly induced candidate, RyeC. Further, we identify ptsI as a trans-encoded target that is directly regulated by this sRNA. From a functional perspective, over-expression of RyeC in Salmonella produced a general attenuation of several in vitro phenotypes including acid survival, motility, adhesion and invasion of epithelial cell lines as well as replication within macrophages. Together, this study highlights the diverse roles played by sRNAs in acid tolerance and virulence of S. Typhimurium.
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55
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Pande V, McWhorter AR, Chousalkar KK. Anti-bacterial and anti-biofilm activity of commercial organic acid products against Salmonella enterica isolates recovered from an egg farm environment. Avian Pathol 2018; 47:189-196. [DOI: 10.1080/03079457.2017.1394979] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vivek Pande
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
| | - Andrea R. McWhorter
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
| | - Kapil K. Chousalkar
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
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56
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Adaptations in the physiological heterogeneity and viability of Shigella dysenteriae, Shigella flexneri and Salmonella typhimurium, after exposure to simulated gastric acid fluid. Microb Pathog 2017; 113:378-384. [DOI: 10.1016/j.micpath.2017.11.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 01/24/2023]
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57
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Calvo T, Alvarez-Ordóñez A, Prieto M, Bernardo A, López M. Stress adaptation has a minor impact on the effectivity of Non-Thermal Atmospheric Plasma (NTAP) against Salmonella spp. Food Res Int 2017; 102:519-525. [DOI: 10.1016/j.foodres.2017.09.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/07/2017] [Accepted: 09/09/2017] [Indexed: 11/28/2022]
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58
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Melo ANFD, Souza GTD, Schaffner D, Oliveira TCMD, Maciel JF, Souza ELD, Magnani M. Changes in thermo-tolerance and survival under simulated gastrointestinal conditions of Salmonella Enteritidis PT4 and Salmonella Typhimurium PT4 in chicken breast meat after exposure to sequential stresses. Int J Food Microbiol 2017; 251:15-23. [DOI: 10.1016/j.ijfoodmicro.2017.03.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 02/07/2017] [Accepted: 03/27/2017] [Indexed: 01/24/2023]
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59
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Ryan D, Mukherjee M, Suar M. The expanding targetome of small RNAs in Salmonella Typhimurium. Biochimie 2017; 137:69-77. [DOI: 10.1016/j.biochi.2017.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 03/10/2017] [Indexed: 10/20/2022]
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60
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Effect of depolymerized sodium alginate on Salmonella Typhimurium infection in human enterocyte-like HT-29-Luc cells and BALB/c mice. J Funct Foods 2017. [DOI: 10.1016/j.jff.2016.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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61
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Vivijs B, Aertsen A, Michiels CW. Identification of Genes Required for Growth of Escherichia coli MG1655 at Moderately Low pH. Front Microbiol 2016; 7:1672. [PMID: 27826291 PMCID: PMC5078493 DOI: 10.3389/fmicb.2016.01672] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/06/2016] [Indexed: 01/27/2023] Open
Abstract
The survival of some pathotypes of Escherichia coli in very low pH environments like highly acidic foods and the stomach has been well documented and contributes to their success as foodborne pathogens. In contrast, the ability of E. coli to grow at moderately low pH has received less attention, although this property can be anticipated to be also very important for the safety of mildly acidic foods. Therefore, the objective of this study was to identify cellular functions required for growth of the non-pathogenic strain E. coli MG1655 at low pH. First, the role of the four E. coli amino acid decarboxylase systems, which are the major cellular mechanisms allowing extreme acid survival, was investigated using mutants defective in each of the systems. Only the lysine decarboxylase (CadA) was required for low pH growth. Secondly, a screening of 8544 random transposon insertion mutants resulted in the identification of six genes affecting growth in LB broth acidified to pH 4.50 with HCl. Two of the genes, encoding the transcriptional regulator LeuO and the elongation factor P-β-lysine ligase EpmA, can be linked to CadA production. Two other genes, encoding the diadenosine tetraphosphatase ApaH and the tRNA modification GTPase MnmE, have been previously implicated in the bacterial response to stresses other than low pH. A fifth gene encodes the LPS heptosyltransferase WaaC, and its mutant has a deep rough colony phenotype, which has been linked to reduced acid tolerance in earlier work. Finally, tatC encodes a secA-independent protein translocase that exports a few dozen proteins and thus is likely to have a pleiotropic phenotype. For mnmE, apaH, epmA, and waaC, de novo in frame deletion and genetic complementation confirmed their role in low pH growth, and these deletion mutants were also affected in growth in apple juice and tomato juice. However, the mutants were not affected in survival in gastric simulation medium at pH 2.5, indicating that growth at moderately low pH and survival of extremely low pH depend mostly on different cellular functions.
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Affiliation(s)
| | | | - Chris W. Michiels
- Laboratory of Food Microbiology, Department of Microbial and Molecular Systems, and Leuven Food Science and Nutrition Research Centre (LFoRCe), KU LeuvenLeuven, Belgium
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62
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Salmonellosis associated with mass catering: a survey of European Union cases over a 15-year period. Epidemiol Infect 2016; 144:3000-3012. [PMID: 27426630 DOI: 10.1017/s0950268816001540] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Salmonella spp. is the causative agent of a foodborne disease called salmonellosis, which is the second most commonly reported gastrointestinal infection in the European Union (EU). Although over the years the annual number of cases of foodborne salmonellosis within the EU has decreased markedly, in 2014, a total of 88 715 confirmed cases were still reported by 28 EU Member States. The European Food Safety Authority reported that, after the household environment, the most frequent settings for the transmission of infection were catering services. As evidenced by the reviewed literature, which was published over the last 15 years (2000-2014), the most frequently reported causative agents were Salmonella Enteritidis and Salmonella Typhimurium serovars. These studies on outbreaks indicated the involvement of various facilities, including hospital restaurants, takeaways, ethnic restaurants, hotels, in-flight catering, one fast-food outlet and the restaurant of an amusement park. The most commonly reported sources of infection were eggs and/or egg-containing foods, followed by meat- and vegetable-based preparations. Epidemiological and microbiological studies allowed common risk factors to be identified, including the occurrence of cross-contamination between heat-treated foods and raw materials or improperly cleaned food-contact surfaces.
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63
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Fong K, Wang S. Strain-Specific Survival of Salmonella enterica in Peanut Oil, Peanut Shell, and Chia Seeds. J Food Prot 2016; 79:361-8. [PMID: 26939645 DOI: 10.4315/0362-028x.jfp-15-419] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In North America, outbreaks of Salmonella have been linked to low-water activity (aw) foods, such as nuts and seeds. These outbreaks have implicated an assortment of Salmonella serotypes. Some Salmonella serotypes (e.g., Enteritidis and Typhimurium) cause high proportions of salmonellosis. Nevertheless, there has recently been an emergence of uncommon Salmonella serotypes and strains (e.g., Tennessee, Hartford, and Thompson) in low-aw foods. The aim of this study was to evaluate the survival characteristics of Salmonella serotypes Enteritidis, Typhimurium, Tennessee, Hartford, and Thompson in three low-aw food ingredients with varying aw: peanut oil (aw = 0.521 ± 0.003), peanut shell (aw = 0.321 ± 0.20), and chia seeds (aw = 0.585 ± 0.003). The survival of individual Salmonella strains on each food matrix was monitored for a maximum of 150 days by spreading the bacterial cells onto Luria-Bertani and/or xylose lysine deoxycholate agar. Overall, Salmonella survived for the longest periods of time in peanut oil (96 ± 8 days), followed by chia seeds (94 ± 46 days). The survival period was substantially reduced on the surface of peanut shell (42 ± 49 h), although PCR after 70 days of incubation revealed the presence of Salmonella cells. In addition, Salmonella exhibited a strain-specific response in the three low-aw foods tested. Salmonella Hartford was identified as highly persistent in all low-aw food matrices, whereas Salmonella Typhimurium was the least persistent. The current research emphasizes the adaptable nature of Salmonella to low-aw food ingredients. This may pose additional problems owing to the downstream production of various end products. Additionally, unique survival characteristics among Salmonella strains highlight the need for tailored mitigation strategies regarding high-risk Salmonella strains in the food industry.
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Affiliation(s)
- Karen Fong
- Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, British Columbia, Canada V6T 1Z4
| | - Siyun Wang
- Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, British Columbia, Canada V6T 1Z4.
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64
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Ryan D, Pati NB, Ojha UK, Padhi C, Ray S, Jaiswal S, Singh GP, Mannala GK, Schultze T, Chakraborty T, Suar M. Global transcriptome and mutagenic analyses of the acid tolerance response of Salmonella enterica serovar Typhimurium. Appl Environ Microbiol 2015; 81:8054-65. [PMID: 26386064 PMCID: PMC4651094 DOI: 10.1128/aem.02172-15] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 09/01/2015] [Indexed: 01/18/2023] Open
Abstract
Salmonella enterica serovar Typhimurium (S. Typhimurium) is one of the leading causative agents of food-borne bacterial gastroenteritis. Swift invasion through the intestinal tract and successful establishment in systemic organs are associated with the adaptability of S. Typhimurium to different stress environments. Low-pH stress serves as one of the first lines of defense in mammalian hosts, which S. Typhimurium must efficiently overcome to establish an infection. Therefore, a better understanding of the molecular mechanisms underlying the adaptability of S. Typhimurium to acid stress is highly relevant. In this study, we have performed a transcriptome analysis of S. Typhimurium under the acid tolerance response (ATR) and found a large number of genes (∼47%) to be differentially expressed (more than 1.5-fold or less than -1.5-fold; P < 0.01). Functional annotation revealed differentially expressed genes to be associated with regulation, metabolism, transport and binding, pathogenesis, and motility. Additionally, our knockout analysis of a subset of differentially regulated genes facilitated the identification of proteins that contribute to S. Typhimurium ATR and virulence. Mutants lacking genes encoding the K(+) binding and transport protein KdpA, hypothetical protein YciG, the flagellar hook cap protein FlgD, and the nitrate reductase subunit NarZ were significantly deficient in their ATRs and displayed varied in vitro virulence characteristics. This study offers greater insight into the transcriptome changes of S. Typhimurium under the ATR and provides a framework for further research on the subject.
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Affiliation(s)
- Daniel Ryan
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Niladri Bhusan Pati
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Urmesh K Ojha
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | | | - Shilpa Ray
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Sangeeta Jaiswal
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Gajinder P Singh
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Gopala K Mannala
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Tilman Schultze
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Trinad Chakraborty
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Mrutyunjay Suar
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
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65
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The adaptive response of bacterial food-borne pathogens in the environment, host and food: Implications for food safety. Int J Food Microbiol 2015; 213:99-109. [DOI: 10.1016/j.ijfoodmicro.2015.06.004] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 05/21/2015] [Accepted: 06/08/2015] [Indexed: 11/19/2022]
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66
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Singh A, Barnard TG. Surviving the acid barrier: responses of pathogenic Vibrio cholerae to simulated gastric fluid. Appl Microbiol Biotechnol 2015; 100:815-24. [PMID: 26496916 DOI: 10.1007/s00253-015-7067-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/30/2015] [Accepted: 10/06/2015] [Indexed: 11/30/2022]
Abstract
When bacteria are subjected to low acidic pHs of the gastric environment, they may enter the viable but nonculturable (VBNC) state of survival. In this state, bacteria cannot be cultured on solid media, still exhibit signs of metabolic activity (viability). In this study, the response of pathogenic Vibrio cholerae O1 and O139 to low pH-simulated environments of the human stomach was evaluated for their survival by culturability (plate count) and viability (flow cytometry-FC) assays. Bacteria were acid challenged with simulated gastric fluid (SGF) at pH 1.5, 2.5, 3.5 and 4.5 over a period of 180 min. Exposure to SGF up to 120 min increased acid tolerance of the Vibrios up to pH 3.5 with acid challenge occurring at pH 4.5. Bacteria were culturable from pH 2.5 to 4.5 up to 60 min SGF exposure. The stationary-phase cultures of Vibrio were able to survive SGF at all pHs in an 'injured' state with FC. This could possibly mean that the bacteria have entered the VBNC stage of survival. This is a worrying public health concern due to the fact that once favourable conditions arise (intestines), these Vibrios can change back to an infectious state and cause disease.
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Affiliation(s)
- Atheesha Singh
- Water and Health Research Centre, University of Johannesburg, PO Box 17011, Doornfontein, 2028, Johannesburg, South Africa.
| | - Tobias G Barnard
- Water and Health Research Centre, University of Johannesburg, PO Box 17011, Doornfontein, 2028, Johannesburg, South Africa
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67
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Birk T, Henriksen S, Müller K, Hansen TB, Aabo S. Growth potential of exponential- and stationary-phase Salmonella Typhimurium during sausage fermentation. Meat Sci 2015; 121:342-349. [PMID: 27423056 DOI: 10.1016/j.meatsci.2015.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 06/10/2015] [Accepted: 08/13/2015] [Indexed: 11/24/2022]
Abstract
Raw meat for sausage production can be contaminated with Salmonella. For technical reasons, meat is often frozen prior to mincing but it is unknown how growth of Salmonella in meat prior to freezing affects its growth potential during sausage fermentation. We investigated survival of exponential- and stationary-phase Salmonella Typhimurium (DT12 and DTU292) during freezing at -18°C and their subsequent growth potential during 72h sausage fermentation at 25°C. After 0, 7 and >35d of frozen storage, sausage batters were prepared with NaCl (3%) and NaNO2 (0, 100ppm) and fermented with and without starter culture. With no starter culture, both strains grew in both growth phases. In general, a functional starter culture abolished S. Typhimurium growth independent of growth phase and we concluded that ensuring correct fermentation is important for sausage safety. However, despite efficient fermentation, sporadic growth of exponential-phase cells of S. Typhimurium was observed drawing attention to the handling and storage of sausage meat.
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Affiliation(s)
- T Birk
- National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
| | - S Henriksen
- National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
| | - K Müller
- National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
| | - T B Hansen
- National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
| | - S Aabo
- National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark.
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68
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Affiliation(s)
- Máire Begley
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland;
| | - Colin Hill
- School of Microbiology and Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland;
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69
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Andino A, Hanning I. Salmonella enterica: survival, colonization, and virulence differences among serovars. ScientificWorldJournal 2015; 2015:520179. [PMID: 25664339 PMCID: PMC4310208 DOI: 10.1155/2015/520179] [Citation(s) in RCA: 232] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 12/04/2014] [Accepted: 12/15/2014] [Indexed: 12/31/2022] Open
Abstract
Data indicate that prevalence of specific serovars of Salmonella enterica in human foodborne illness is not correlated with their prevalence in feed. Given that feed is a suboptimal environment for S. enterica, it appears that survival in poultry feed may be an independent factor unrelated to virulence of specific serovars of Salmonella. Additionally, S. enterica serovars appear to have different host specificity and the ability to cause disease in those hosts is also serovar dependent. These differences among the serovars may be related to gene presence or absence and expression levels of those genes. With a better understanding of serovar specificity, mitigation methods can be implemented to control Salmonella at preharvest and postharvest levels.
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Affiliation(s)
- A. Andino
- Department of Food Science and Technology, University of Tennessee, 2605 River Drive, Knoxville, TN 37996, USA
| | - I. Hanning
- Department of Food Science and Technology, University of Tennessee, 2605 River Drive, Knoxville, TN 37996, USA
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70
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Monte DFM, Tavares AG, Albuquerque AR, Sampaio FC, Oliveira TCRM, Franco OL, Souza EL, Magnani M. Tolerance response of multidrug-resistant Salmonella enterica strains to habituation to Origanum vulgare L. essential oil. Front Microbiol 2014; 5:721. [PMID: 25566231 PMCID: PMC4271697 DOI: 10.3389/fmicb.2014.00721] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Accepted: 12/02/2014] [Indexed: 11/13/2022] Open
Abstract
Multidrug-resistant Salmonella enterica isolates from human outbreaks or from poultry origin were investigated for their ability to develop direct-tolerance or cross-tolerance to sodium chloride, potassium chloride, lactic acid, acetic acid, and ciprofloxacin after habituation in subinhibitory amounts ( of the minimum inhibitory concentration - (MIC) and of the minimum inhibitory concentration - MIC) of Origanum vulgare L. essential oil (OVEO) at different time intervals. The habituation of S. enterica to OVEO did not induce direct-tolerance or cross-tolerance in the tested strains, as assessed by the modulation of MIC values. However, cells habituated to OVEO maintained or increased susceptibility to the tested antimicrobials agents, with up to fourfold double dilution decrease from previously determined MIC values. This study reports for the first time the non-inductive effect of OVEO on the acquisition of direct-tolerance or cross-tolerance in multidrug-resistant S. enterica strains to antimicrobial agents that are largely used in food preservation, as well as to CIP, the therapeutic drug of salmonellosis.
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Affiliation(s)
- Daniel F M Monte
- Department of Food Engineering, Center of Technology, Federal University of Paraiba João Pessoa, Brazil
| | - Adassa G Tavares
- Department of Nutrition, Center of Health Sciences, Federal University of Paraiba João Pessoa, Brazil
| | - Allan R Albuquerque
- Department of Clinical and Social Dentistry, Center of Health Sciences, Federal University of Paraiba João Pessoa, Brazil
| | - Fábio C Sampaio
- Department of Clinical and Social Dentistry, Center of Health Sciences, Federal University of Paraiba João Pessoa, Brazil
| | - Tereza C R M Oliveira
- Department of Food Science and Technology, Center of Agricultural Sciences, Londrina State University Londrina, Brazil
| | - Octavio L Franco
- Center of Biochemical and Proteomic Analysis, Catholic University of Brasília Brasília, Brazil ; S-Inova, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco Campo Grande, Brazil
| | - Evandro L Souza
- Department of Nutrition, Center of Health Sciences, Federal University of Paraiba João Pessoa, Brazil
| | - Marciane Magnani
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Center of Technology, Federal University of Paraiba João Pessoa, Brazil
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71
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Yang Y, Kadim MI, Khoo WJ, Zheng Q, Setyawati MI, Shin YJ, Lee SC, Yuk HG. Membrane lipid composition and stress/virulence related gene expression of Salmonella Enteritidis cells adapted to lactic acid and trisodium phosphate and their resistance to lethal heat and acid stress. Int J Food Microbiol 2014; 191:24-31. [DOI: 10.1016/j.ijfoodmicro.2014.08.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/23/2014] [Accepted: 08/26/2014] [Indexed: 01/20/2023]
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72
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Influence of lactic acid and acetic acid on Salmonella spp. growth and expression of acid tolerance-related genes. Food Res Int 2014; 64:726-732. [DOI: 10.1016/j.foodres.2014.08.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/11/2014] [Accepted: 08/17/2014] [Indexed: 11/17/2022]
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73
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Acid stress management by Cronobacter sakazakii. Int J Food Microbiol 2014; 178:21-8. [DOI: 10.1016/j.ijfoodmicro.2014.03.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 02/09/2014] [Accepted: 03/02/2014] [Indexed: 11/24/2022]
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74
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2,3-Butanediol fermentation promotes growth of Serratia plymuthica at low pH but not survival of extreme acid challenge. Int J Food Microbiol 2014; 175:36-44. [DOI: 10.1016/j.ijfoodmicro.2014.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/23/2014] [Accepted: 01/26/2014] [Indexed: 01/10/2023]
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75
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Cook K, Flis S, Ballard C. Sensitivity of Mycobacterium avium
subsp paratuberculosis
,Escherichia coli
and Salmonella enterica
serotype Typhimurium to low pH, high organic acids and ensiling. J Appl Microbiol 2013; 115:334-45. [DOI: 10.1111/jam.12243] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 04/10/2013] [Accepted: 05/01/2013] [Indexed: 01/14/2023]
Affiliation(s)
| | - S.A. Flis
- William H. Miner Agricultural Research Institute; Chazy NY USA
| | - C.S. Ballard
- William H. Miner Agricultural Research Institute; Chazy NY USA
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76
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Kuda T, Yazaki T, Takahashi H, Kimura B. Effect of dried and vinegar flavored squid products on acid resistance of Salmonella Typhimurium and Staphylococcus aureus. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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77
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Grapefruit juice and its constituents augment the effect of low pH on inhibition of survival and adherence to intestinal epithelial cells of Salmonella enterica serovar Typhimurium PT193. Int J Food Microbiol 2012; 158:232-8. [DOI: 10.1016/j.ijfoodmicro.2012.07.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 07/16/2012] [Accepted: 07/23/2012] [Indexed: 01/24/2023]
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78
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YANG YISHAN, TEO JIAHAN, BANG WOOSUK, YUK HYUNGYUN. CHANGES IN ACID AND HEAT RESISTANCE OF SALMONELLA NEWPORT AND SALMONELLA SAINTPAUL STORED IN MANGO AND PINEAPPLE JUICES. J Food Saf 2012. [DOI: 10.1111/j.1745-4565.2012.00382.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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79
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de Souza Sant'Ana A. Introduction to the Special Issue: Salmonella in foods: Evolution, strategies and challenges. Food Res Int 2012. [DOI: 10.1016/j.foodres.2012.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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80
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Álvarez-Ordóñez A, Begley M, Prieto M, Messens W, López M, Bernardo A, Hill C. Salmonella spp. survival strategies within the host gastrointestinal tract. MICROBIOLOGY-SGM 2011; 157:3268-3281. [PMID: 22016569 DOI: 10.1099/mic.0.050351-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Human salmonellosis infections are usually acquired via the food chain as a result of the ability of Salmonella serovars to colonize and persist within the gastrointestinal tract of their hosts. In addition, after food ingestion and in order to cause foodborne disease in humans, Salmonella must be able to resist several deleterious stress conditions which are part of the host defence against infections. This review gives an overview of the main defensive mechanisms involved in the Salmonella response to the extreme acid conditions of the stomach, and the elevated concentrations of bile salts, osmolytes and commensal bacterial metabolites, and the low oxygen tension conditions of the mammalian and avian gastrointestinal tracts.
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Affiliation(s)
- Avelino Álvarez-Ordóñez
- Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.,Department of Microbiology, University College Cork, Cork, Ireland
| | - Máire Begley
- Department of Microbiology, University College Cork, Cork, Ireland
| | - Miguel Prieto
- Department of Food Hygiene and Technology, Veterinary Faculty, University of León, León, Spain
| | - Winy Messens
- Biological Hazards (BIOHAZ) Unit, European Food Safety Authority (EFSA), Largo N. Palli 5/A, I-43121 Parma, Italy
| | - Mercedes López
- Department of Food Hygiene and Technology, Veterinary Faculty, University of León, León, Spain
| | - Ana Bernardo
- Department of Food Hygiene and Technology, Veterinary Faculty, University of León, León, Spain
| | - Colin Hill
- Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.,Department of Microbiology, University College Cork, Cork, Ireland
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