1
|
Guo L, Ze X, Feng H, Liu Y, Ge Y, Zhao X, Song C, Jiao Y, Liu J, Mu S, Yao S. Identification and quantification of viable Lacticaseibacillus rhamnosus in probiotics using validated PMA-qPCR method. Front Microbiol 2024; 15:1341884. [PMID: 38298895 PMCID: PMC10828034 DOI: 10.3389/fmicb.2024.1341884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/03/2024] [Indexed: 02/02/2024] Open
Abstract
The identification and quantification of viable bacteria at the species/strain level in compound probiotic products is challenging now. Molecular biology methods, e.g., propidium monoazide (PMA) combination with qPCR, have gained prominence for targeted viable cell counts. This study endeavors to establish a robust PMA-qPCR method for viable Lacticaseibacillus rhamnosus detection and systematically validated key metrics encompassing relative trueness, accuracy, limit of quantification, linear, and range. The inclusivity and exclusivity notably underscored high specificity of the primers for L. rhamnosus, which allowed accurate identification of the target bacteria. Furthermore, the conditions employed for PMA treatment were fully verified by 24 different L. rhamnosus including type strain, commercial strains, etc., confirming its effective discrimination between live and dead bacteria. A standard curve constructed by type strain could apply to commercial strains to convert qPCR Cq values to viable cell numbers. The established PMA-qPCR method was applied to 46 samples including pure cultures, probiotics as food ingredients, and compound probiotic products. Noteworthy is the congruity observed between measured and theoretical values within a 95% confidence interval of the upper and lower limits of agreement, demonstrating the relative trueness of this method. Moreover, accurate results were obtained when viable L. rhamnosus ranging from 103 to 108 CFU/mL. The comprehensive appraisal of PMA-qPCR performances provides potential industrial applications of this new technology in quality control and supervision of probiotic products.
Collapse
Affiliation(s)
- Lizheng Guo
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Xiaolei Ze
- Microbiome Research and Application Center, BYHEALTH Institute of Nutrition & Health, Guangzhou, China
| | - Huifen Feng
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Yiru Liu
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Yuanyuan Ge
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Xi Zhao
- Microbiome Research and Application Center, BYHEALTH Institute of Nutrition & Health, Guangzhou, China
| | - Chengyu Song
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Yingxin Jiao
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Jiaqi Liu
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Shuaicheng Mu
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| | - Su Yao
- China National Research Institute of Food and Fermentation Industries Co., LTD., China Center of Industrial Culture Collection, Beijing, China
| |
Collapse
|
2
|
Wang G, Nie X, Yang L, Liao H. A comparative analysis of quantitative detection methods for viable food-borne pathogens using RT-qPCR and PMA-qPCR. Lett Appl Microbiol 2023; 76:ovad120. [PMID: 37793793 DOI: 10.1093/lambio/ovad120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/06/2023]
Abstract
The accurate quantification of viable pathogens in food is crucial for ensuring food safety. This study mainly aimed to investigate the quantification of viable pathogens using PMA-qPCR and RT-qPCR, taking into account bacterial species, food matrices, and inactivation methods. The detection limit of PMA-qPCR for Salmonella serovars in simple matrices, such as culture broth, lake, or tap water, was found to be 102 cells per ml. Regarding the detection of Staphylococcus aureus and Escherichia coli in culture broth, as well as Salmonella in more complex matrices, such as juices and lab-made broth, both methods exhibited a detection limit of 103 cells per ml. Besides that, in adverse situations, there was a risk of overestimating the number of viable pathogens using PMA-qPCR. In addition, a conspicuous discrepancy between the results of PMA-qPCR/RT-qPCR and those of the plate counting assay was observed when Salmonella was exposed to isopropanol, H2O2, NaClO, sonication, or thermosonication. This suggests that it may survive in a viable but non-culturable state and poses a challenge for accurate quantification of viable cells using plate counting assay. Therefore, the results obtained by RT-qPCR were more objective compared to PMA-qPCR due to potential influences from bacteria species, surrounding media, and inactivation methods.
Collapse
Affiliation(s)
- Guoxiong Wang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xinyin Nie
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Lihong Yang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Hongmei Liao
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| |
Collapse
|
3
|
Liu Y, Wei C, Wan H, Sarengaowa, Liang X, Jiang T, Dong Y, Zhao X, Zhong T. Preliminary Study on Rapid and Simultaneous Detection of Viable Escherichia coli O157:H7, Staphylococcus aureus, and Salmonella by PMA-mPCR in Food. Molecules 2023; 28:5835. [PMID: 37570805 DOI: 10.3390/molecules28155835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/25/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Escherichia coli O157:H7, Staphylococcus aureus, and Salmonella are major foodborne pathogens that are widespread in nature and responsible for several outbreaks of food safety accidents. Thus, a rapid and practical technique (PMA-mPCR) was developed for the simultaneous detection of viable E. coli O157:H7, S. aureus, and Salmonella in pure culture and in a food matrix. To eliminate false positive results, propidium monoazide (PMA) was applied to selectively suppress the DNA amplification of dead cells. The results showed the optimum concentration of PMA is 5.0 µg/mL. The detection limit of this assay by mPCR was 103 CFU/mL in the culture broth, and by PMA-mPCR was 104 CFU/mL both in pure culture and a food matrix (milk and ground beef). In addition, the detection of mixed viable and dead cells was also explored in this study. The detection sensitivity ratio of viable and dead counts was less than 1:10. Therefore, the PMA-mPCR assay proposed here might provide an efficient detection tool for the simultaneous detection of viable E. coli O157:H7, S. aureus, and Salmonella and also have great potential for the detection and concentration assessment of VBNC cells.
Collapse
Affiliation(s)
- Yao Liu
- School of Pharmacy and Food Science, Zhuhai College of Science and Technology, Zhuhai 519041, China
| | - Caijiao Wei
- School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Hui Wan
- Nanchang Agricultural Technology Popularization Center, Nanchang 330299, China
| | - Sarengaowa
- School of Pharmacy and Food Science, Zhuhai College of Science and Technology, Zhuhai 519041, China
| | - Xiaoping Liang
- School of Pharmacy and Food Science, Zhuhai College of Science and Technology, Zhuhai 519041, China
| | - Tao Jiang
- School of Pharmacy and Food Science, Zhuhai College of Science and Technology, Zhuhai 519041, China
- Faculty of Medicine, Macau University of Science and Technology, Taipa, Macao 999078, China
| | - Yuhe Dong
- Faculty of Medicine, Macau University of Science and Technology, Taipa, Macao 999078, China
| | - Xihong Zhao
- School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Taipa, Macao 999078, China
| |
Collapse
|
4
|
Di Salvo E, Panebianco F, Panebianco A, Ziino G. Quantitative Detection of Viable but Nonculturable Vibrio parahaemolyticus in Frozen Bivalve Molluscs. Foods 2023; 12:2373. [PMID: 37372584 DOI: 10.3390/foods12122373] [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: 05/12/2023] [Revised: 06/06/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
Vibrio parahaemolyticus is a foodborne pathogen diffusely distributed in the marine environment and often isolated from raw seafood belonging to different species, mostly shellfish. Ingestion of under- or uncooked seafood contaminated by V. parahaemolyticus can cause severe gastrointestinal symptoms in humans. Due to its ability to withstand low temperatures, Vibrio spp. could survive in frozen seafoods for long periods by entering the viable but nonculturable state (VBNC) and may constitute an unrecognized source of food contamination and infection. In the present study, seventy-seven frozen bivalve molluscs (35 mussels; 42 clams) were subjected to the detection and enumeration of viable V. parahaemolyticus using standard culture methods. VBNC forms were detected and quantified by applying an optimized protocol based on Propidium Monoazide (PMA) and Quantitative PCR (qPCR). All samples were negative for both the detection and enumeration of V. parahaemolyticus by the standard culture methods. VBNC forms were detected in 11.7% of the samples (9/77), with values ranging from 1.67 to 2.29 Log CFU/g. Only clam samples were positive for the detection of VBNC forms. The results of this study highlighted that VBNC V. parahaemolyticus may be present in frozen bivalve molluscs. Further data on the prevalence of VBNC V. parahaemolyticus in frozen seafood are needed in order to perform a robust risk assessment.
Collapse
Affiliation(s)
- Eleonora Di Salvo
- Department of Veterinary Sciences, University of Messina, Polo Universitario dell'Annunziata, Viale Palatucci snc, 98168 Messina, Italy
| | - Felice Panebianco
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, 10095 Turin, Italy
| | - Antonio Panebianco
- Department of Veterinary Sciences, University of Messina, Polo Universitario dell'Annunziata, Viale Palatucci snc, 98168 Messina, Italy
| | - Graziella Ziino
- Department of Veterinary Sciences, University of Messina, Polo Universitario dell'Annunziata, Viale Palatucci snc, 98168 Messina, Italy
| |
Collapse
|
5
|
Paramithiotis S. Molecular Targets for Foodborne Pathogenic Bacteria Detection. Pathogens 2023; 12:pathogens12010104. [PMID: 36678453 PMCID: PMC9865778 DOI: 10.3390/pathogens12010104] [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: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
The detection of foodborne pathogenic bacteria currently relies on their ability to grow on chemically defined liquid and solid media, which is the essence of the classical microbiological approach. Such procedures are time-consuming and the quality of the result is affected by the selectivity of the media employed. Several alternative strategies based on the detection of molecular markers have been proposed. These markers may be cell constituents, may reside on the cell envelope or may be specific metabolites. Each marker provides specific advantages and, at the same time, suffers from specific limitations. The food matrix and chemical composition, as well as the accompanying microbiota, may also severely compromise detection. The aim of the present review article is to present and critically discuss all available information regarding the molecular targets that have been employed as markers for the detection of foodborne pathogens. Their strengths and limitations, as well as the proposed alleviation strategies, are presented, with particular emphasis on their applicability in real food systems and the challenges that are yet to be effectively addressed.
Collapse
Affiliation(s)
- Spiros Paramithiotis
- Laboratory of Food Process Engineering, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece
| |
Collapse
|
6
|
Chen L, Li L, Xie X, Chai A, Shi Y, Fan T, Xie J, Li B. An Improved Method for Quantification of Viable Fusarium Cells in Infected Soil Products by Propidium Monoazide Coupled with Real-Time PCR. Microorganisms 2022; 10:microorganisms10051037. [PMID: 35630479 PMCID: PMC9143521 DOI: 10.3390/microorganisms10051037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/07/2022] [Accepted: 05/08/2022] [Indexed: 11/30/2022] Open
Abstract
Fusarium is a soil-borne pathogen that causes root rot disease in cucumber. To date, quantitative real-time PCR (qPCR) is a common tool to detect the content of Fusarium in soil. However, qPCR cannot distinguish between viable and nonviable cells. The aim of this study was to develop a detection technique to pretreat tissue fluid with propidium monoazide (PMA) followed by extract DNA, and then to quantify viable Fusarium cells in contaminated soil. In this work, the specific primer pair F8-1/F8-2 was designed based on the translation elongation factor (EF) gene and a PMA-qPCR assay was established to amplify and quantify soils of viable Fusarium cells. The PMA pretreatment test was optimized, which indicated that the optimal PMA concentration and light exposure time were 50 mmol L−1 and 15 min, respectively. The lowest limit of viable cells in suspension detected and soil by PMA-qPCR were 82 spore mL−1 and 91.24 spore g−1, respectively. For naturally contaminated soil, viable Fusarium cells were detected in eight of the 18 samples, and the Fusarium amount ranged from 104 to 106 spore g−1. In conclusion, the PMA-qPCR method has the characteristics of high sensitivity, efficiency, and time saving, which could support nursery plants to avoid Fusarium infection and agro-industry losses.
Collapse
Affiliation(s)
- Lida Chen
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
| | - Lei Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
| | - Xuewen Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
- Shouguang R&D Center of Vegetables, Chinese Academy of Agricultural Sciences, Weifang 262700, China
| | - Ali Chai
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
| | - Yanxia Shi
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
| | - Tengfei Fan
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
- Correspondence: (J.X.); (B.L.)
| | - Baoju Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (X.X.); (A.C.); (Y.S.); (T.F.)
- Correspondence: (J.X.); (B.L.)
| |
Collapse
|
7
|
Bouju-Albert A, Saltaji S, Dousset X, Prévost H, Jaffrès E. Quantification of Viable Brochothrix thermosphacta in Cold-Smoked Salmon Using PMA/PMAxx-qPCR. Front Microbiol 2021; 12:654178. [PMID: 34335490 PMCID: PMC8316974 DOI: 10.3389/fmicb.2021.654178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/17/2021] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to develop a rapid and accurate PMA-qPCR method to quantify viable Brochothrix thermosphacta in cold-smoked salmon. B. thermosphacta is one of the main food spoilage bacteria. Among seafood products, cold-smoked salmon is particularly impacted by B. thermosphacta spoilage. Specific and sensitive tools that detect and quantify this bacterium in food products are very useful. The culture method commonly used to quantify B. thermosphacta is time-consuming and can underestimate cells in a viable but not immediately culturable state. We designed a new PCR primer set from the single-copy rpoC gene. QPCR efficiency and specificity were compared with two other published primer sets targeting the rpoC and rpoB genes. The viability dyes PMA or PMAxx were combined with qPCR and compared with these primer sets on viable and dead B. thermosphacta cells in BHI broth and smoked salmon tissue homogenate (SSTH). The three primer sets displayed similar specificity and efficiency. The efficiency of new designed rpoC qPCR on viable B. thermosphacta cells in SSTH was 103.50%, with a linear determination coefficient (r2) of 0.998 and a limit of detection of 4.04 log CFU/g. Using the three primer sets on viable cells, no significant difference was observed between cells treated or untreated with PMA or PMAxx. When dead cells were used, both viability dyes suppressed DNA amplification. Nevertheless, our results did not highlight any difference between PMAxx and PMA in their efficiency to discriminate viable from unviable B. thermosphacta cells in cold-smoked salmon. Thus, this study presents a rapid, specific and efficient rpoC-PMA-qPCR method validated in cold-smoked salmon to quantify viable B. thermosphacta in foods.
Collapse
|
8
|
How to Evaluate Non-Growing Cells-Current Strategies for Determining Antimicrobial Resistance of VBNC Bacteria. Antibiotics (Basel) 2021; 10:antibiotics10020115. [PMID: 33530321 PMCID: PMC7912045 DOI: 10.3390/antibiotics10020115] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/22/2021] [Indexed: 12/17/2022] Open
Abstract
Thanks to the achievements in sanitation, hygiene practices, and antibiotics, we have considerably improved in our ongoing battle against pathogenic bacteria. However, with our increasing knowledge about the complex bacterial lifestyles and cycles and their plethora of defense mechanisms, it is clear that the fight is far from over. One of these resistance mechanisms that has received increasing attention is the ability to enter a dormancy state termed viable but non-culturable (VBNC). Bacteria that enter the VBNC state, either through unfavorable environmental conditions or through potentially lethal stress, lose their ability to grow on standard enrichment media, but show a drastically increased tolerance against antimicrobials including antibiotics. The inability to utilize traditional culture-based methods represents a considerable experimental hurdle to investigate their increased antimicrobial resistance and impedes the development and evaluation of effective treatments or interventions against bacteria in the VBNC state. Although experimental approaches were developed to detect and quantify VBNCs, only a few have been utilized for antimicrobial resistance screening and this review aims to provide an overview of possible methodological approaches.
Collapse
|
9
|
Production of Phage Display-Derived Peptide and the Application for Detecting Vibrio parahaemolyticus by Combined PCR Technology. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01800-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
10
|
Miotto M, Barretta C, Ossai SO, da Silva HS, Kist A, Vieira CRW, Parveen S. Optimization of a propidium monoazide-qPCR method for Escherichia coli quantification in raw seafood. Int J Food Microbiol 2020; 318:108467. [PMID: 31835094 DOI: 10.1016/j.ijfoodmicro.2019.108467] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 11/13/2019] [Accepted: 11/30/2019] [Indexed: 11/15/2022]
Abstract
The present study compared different concentrations of propidium monoazide (PMA), time of exposure to light and different light intensities to determine the optimal conditions for the quantification of viable Escherichia coli in cell suspension and in food matrix. The influence of cell density and the effectiveness of PMA in viable but non-culturable (VBNC) E. coli cells were evaluated and also applied in food matrix. For that purpose, different concentrations of PMA (20 μM, 40 μM, 50 μM, 60 μM and 80 μM) under different times of exposure (5 min, 10 min, 15 min, 20 min and 30 min) to lights of different intensities (500 W and 650 W) were evaluated. After determining the optimal conditions, the PMA-qPCR methods were applied to different compositions of live and heat-killed E. coli suspensions (v:v; 0:1; 1:0; 1:1) in concentrations ranging from 3 Log to 7 Log CFU/mL. The same dilutions were prepared with E. coli in VBNC state and applied in food matrix. The results obtained from qPCR, PMA-qPCR and plate counts were compared. The results suggested that a PMA treatment of 50 μM PMA for 15 min under 650 W light intensity was optimal under our conditions. For E. coli cell suspensions, the amplification of heat-killed cells was inhibited greatly by PMA when concentrations were ≤ 5 Log CFU/mL. For the samples of oyster inoculated with heat-killed cells, E. coli was not detected by PMA-qPCR in concentrations ≤4 Log CFU/g. Regarding the results with VBNC state, we considered the PMA-qPCR method to be applicable for enumerating E. coli VBNC cells in oyster samples. Based on our findings, we further recommend the use of PMA-qPCR with the aim of reducing the amplification of dead cells for improving its performance, since false-positives could still occur depending on the level of E. coli in the sample. The application of the PMA-qPCR for quantification of bacteria, compared to the use of culture-dependent methods, is quite promising. However, further studies are recommended, especially using different food matrices.
Collapse
Affiliation(s)
- Marilia Miotto
- Department of Food Science and Technology, Federal University of Santa Catarina, 1346 Admar Gonzaga, 88034-001 Florianopolis, Santa Catarina, Brazil.
| | - Clarissa Barretta
- Department of Food Science and Technology, Federal University of Santa Catarina, 1346 Admar Gonzaga, 88034-001 Florianopolis, Santa Catarina, Brazil
| | - Sylvia O Ossai
- Food Science and Technology Program, University of Maryland Eastern Shore, 2116 Backbone Road, 21853 Princess Anne, MD, United States
| | - Helen Silvestre da Silva
- Department of Food Science and Technology, Federal University of Santa Catarina, 1346 Admar Gonzaga, 88034-001 Florianopolis, Santa Catarina, Brazil
| | - Airton Kist
- Laboratory of Computational and Applied Statistics, Department of Mathematics and Statistics, State University of Ponta Grossa, 4748 Gen. Carlos Cavalcanti, 84030-900 Ponta Grossa, Parana, Brazil
| | - Cleide Rosana Werneck Vieira
- Department of Food Science and Technology, Federal University of Santa Catarina, 1346 Admar Gonzaga, 88034-001 Florianopolis, Santa Catarina, Brazil
| | - Salina Parveen
- Food Science and Technology Program, University of Maryland Eastern Shore, 2116 Backbone Road, 21853 Princess Anne, MD, United States
| |
Collapse
|
11
|
Zhao L, Lv X, Cao X, Zhang J, Gu X, Zeng H, Wang L. Improved quantitative detection of VBNC Vibrio parahaemolyticus using immunomagnetic separation and PMAxx-qPCR. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106962] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
12
|
Mougin J, Copin S, Bojolly D, Raguenet V, Robert-Pillot A, Quilici ML, Midelet-Bourdin G, Grard T, Bonnin-Jusserand M. Adhesion to stainless steel surfaces and detection of viable but non cultivable cells of Vibrio parahaemolyticus and Vibrio cholerae isolated from shrimps in seafood processing environments: Stayin’ alive? Food Control 2019. [DOI: 10.1016/j.foodcont.2019.03.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
13
|
Salas-Massó N, Linh QT, Chin WH, Wolff A, Andree KB, Furones MD, Figueras MJ, Bang DD. The Use of a DNA-Intercalating Dye for Quantitative Detection of Viable Arcobacter spp. Cells (v-qPCR) in Shellfish. Front Microbiol 2019; 10:368. [PMID: 30873146 PMCID: PMC6403187 DOI: 10.3389/fmicb.2019.00368] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/12/2019] [Indexed: 11/13/2022] Open
Abstract
The genus Arcobacter (Vandamme et al., 1991), comprised of Campylobacter-related species, are considered zoonotic emergent pathogens. The presence of Arcobacter in food products like shellfish, has an elevated incidence worldwide. In this study, we developed a specific viable quantitative PCR (v-qPCR), using the dye propidium monoazide (PMA), for quantification of the viable Arcobacter spp. cells in raw oysters and mussels. The high selectivity of primers was demonstrated by using purified DNA from 38 different species, 20 of them from the genus Arcobacter. The optimization of PMA concentration showed that 20 μM was considered as an optimal concentration that inhibits the signal from dead cells at different concentrations (OD550 from 0.2 to 0.8) and at different ratios of live: dead cells (50:50 and 90:10). The v-qPCR results from shellfish samples were compared with those obtained in parallel using several culture isolation approaches (i.e., direct plating on marine and blood agar and by post-enrichment culturing in both media). The enrichment was performed in parallel in Arcobacter-CAT broth with and without adding NaCl. Additionally, the v-qPCR results were compared to those obtained with traditional quantitative (qPCR). The v-qPCR and the qPCR resulted in c.a. 94% of positive detection of Arcobacter vs. 41% obtained by culture approaches. When examining the reduction effect resulting from the use of v-qPCR, samples pre-enriched in Arcobacter-CAT broth supplemented with 2.5% NaCl showed a higher reduction (3.27 log copies) than that of samples obtained directly and those pre-enriched in Arcobacter-CAT broth isolation (1.05 and 1.04). When the v-qPCR was applied to detect arcobacter from real shellfish samples, 15/17 samples tested positive for viable Arcobacter with 3.41 to 8.70 log copies 1g-1. This study offers a new tool for Arcobacter surveillance in seafood.
Collapse
Affiliation(s)
- Nuria Salas-Massó
- Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, Institut d’Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
- IRTA-Sant Carles de la Ràpita, Sant Carles de la Ràpita, Spain
| | - Quyen Than Linh
- Department of Bioengineering and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | | | - Anders Wolff
- Department of Bioengineering and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Karl B. Andree
- IRTA-Sant Carles de la Ràpita, Sant Carles de la Ràpita, Spain
| | | | - María José Figueras
- Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, Institut d’Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Dang Duong Bang
- Division of Microbiology, National Food Institute, Technical University of Denmark, Lyngby, Denmark
| |
Collapse
|
14
|
Seafood spoilage microbiota and associated volatile organic compounds at different storage temperatures and packaging conditions. Int J Food Microbiol 2018; 280:87-99. [PMID: 29478710 DOI: 10.1016/j.ijfoodmicro.2017.12.029] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/21/2017] [Accepted: 12/30/2017] [Indexed: 01/12/2023]
Abstract
Seafood comprising of both vertebrate and invertebrate aquatic organisms are nutritious, rich in omega-3 fatty acids, essential vitamins, proteins, minerals and form part of healthy diet. However, despite the health and nutritional benefits, seafood is highly perishable. Spoilage of seafood could be as a result of microbial activity, autolysis or chemical oxidation. Microbial activity constitutes more spoilage than others. Spoilage bacteria are commonly Gram negative and produce off odours and flavours in seafood as a result of their metabolic activities. Storage temperature, handling and packaging conditions affect microbial growth and thus the shelf-life of seafood. Due to the complexity of the microbial communities in seafood, culture dependent methods of detection may not be useful, hence the need for culture independent methods are necessary to understand the diversity of microbiota and spoilage process. Similarly, the volatile organic compounds released by spoilage bacteria are not fully understood in some seafood. This review therefore highlights current knowledge and understanding of seafood spoilage microbiota, volatile organic compounds, effects of storage temperature and packaging conditions on quality of seafood.
Collapse
|
15
|
Detection of viable but non-culturable Escherichia coli O157:H7 by PCR in combination with propidium monoazide. 3 Biotech 2018; 8:28. [PMID: 29276663 DOI: 10.1007/s13205-017-1052-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 12/17/2017] [Indexed: 10/18/2022] Open
Abstract
The aim of this study was to evaluate the applicability of the conventional PCR detection method combined with propidium monoazide (PMA) treatment for the detection of viable but non-culturable (VBNC) state Escherichia coli O157:H7 in ground beef meatballs. Under low temperature, E. coli O157:H7 cells were induced into the VBNC state in ground beef meatballs at - 20 °C after 152 days. The optimal PMA concentration of 5 µg/mL was obtained in beef meatball samples, which could completely inhibit the DNA amplification on dead cells (106 cells/mL) but with no inhibition on viable cells. The established PMA-PCR assay revealed that the VBNC counts exceeded 107 CFU/mL in artificial contamination beef samples, which could be used for semi-quantitative detection of VBNC cells in beef meatball samples. This study indicated that the PMA-PCR assay might be a potential method for detection of VBNC state E. coli O157:H7 cells in food products.
Collapse
|
16
|
Federici S, Serrazanetti DI, Guerzoni ME, Campana R, Ciandrini E, Baffone W, Gianotti A. Development of a rapid PCR protocol to detect Vibrio parahaemolyticus in clams. Journal of Food Science and Technology 2017; 55:749-759. [PMID: 29391640 DOI: 10.1007/s13197-017-2986-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 11/25/2022]
Abstract
Vibrio parahaemolyticus is part of the natural microflora of estuarine and coastal marine waters and can be also present in seafood, especially shellfish and bivalve molluscs. In this study we compared the reference cultural method ISO 6887-3 with two molecular methods, multiplex PCR and real-time PCR, for the detection of two distinct genetic markers (tlh species-specific gene and tdh virulence gene) of V. parahaemolyticus in bivalve mollusc. The analyses were performed on clams inoculated with V. parahaemolyticus ATCC 43996 at T0 and after a 3 and 6 h of pre-enrichment in alkaline saline peptone water. Counts on agar plates were largely inaccurate, probably due to other Vibrio species grown on the TCBS selective agar. Multiplex PCR assays, performed using primers pairs for tdh and tlh genes, showed a detection limit of 104 CFU/g of shell stock within 6 h of pre-enrichment, respecting however the action level indicated by the National Seafood Sanitation Program guideline. Detection by tdh gene in real-time PCR reached the definitely highest sensitivity in shorter times, 101 CFU/g after 3 h of pre-enrichment, while the sensitivity for the tlh gene was not promising, detecting between 105 and 106 CFU/g after 6 h of pre-enrichment. Our findings provide a rapid routine method of detection of V. parahaemolyticus based on tdh gene by real-time PCR for commercial seafood analysis to identify the risk of gastrointestinal diseases.
Collapse
Affiliation(s)
- Sara Federici
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Diana I Serrazanetti
- 2Inter-departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum, University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - M Elisabetta Guerzoni
- 3Department of Food Science, Alma Mater Studiorum, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Raffaella Campana
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Eleonora Ciandrini
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Wally Baffone
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Andrea Gianotti
- 2Inter-departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum, University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy.,3Department of Food Science, Alma Mater Studiorum, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy.,4Dipartimento di Scienze e Tecnologie Agro-Alimentari (DISTAL), Department of Agricultural and Food Science, Alma Mater Studiorum, Università di Bologna, Via Fanin 50, 40127 Bologna, Italy.,Unità Organizzativa di Cesena, Piazza Goidanich 60, Cesena, FC Italy
| |
Collapse
|
17
|
Bonnin-Jusserand M, Copin S, Le Bris C, Brauge T, Gay M, Brisabois A, Grard T, Midelet-Bourdin G. Vibrio species involved in seafood-borne outbreaks (Vibrio cholerae, V. parahaemolyticus and V. vulnificus): Review of microbiological versus recent molecular detection methods in seafood products. Crit Rev Food Sci Nutr 2017; 59:597-610. [DOI: 10.1080/10408398.2017.1384715] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Maryse Bonnin-Jusserand
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
- INRA, France
- Univ. Lille, Lille, France
- ISA, Lille, France
- Univ. Artois, Arras, France
| | - Stéphanie Copin
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Cédric Le Bris
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
| | - Thomas Brauge
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Mélanie Gay
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Anne Brisabois
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Thierry Grard
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
| | - Graziella Midelet-Bourdin
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| |
Collapse
|
18
|
Li Y, Yang L, Fu J, Yan M, Chen D, Zhang L. The novel loop-mediated isothermal amplification based confirmation methodology on the bacteria in Viable but Non-Culturable (VBNC) state. Microb Pathog 2017; 111:280-284. [DOI: 10.1016/j.micpath.2017.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 09/03/2017] [Accepted: 09/05/2017] [Indexed: 01/28/2023]
|
19
|
Detection of Viable Vibrio cholerae Cells in Seafood Using a Real-Time Visual Loop-Mediated Isothermal Amplification Combined with Propidium Monoazide. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0981-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
20
|
Feng K, Hu W, Jiang A, Sarengaowa, Xu Y, Zou Y, Yang L, Wang X. A Dual Filtration-Based Multiplex PCR Method for Simultaneous Detection of Viable Escherichia coli O157:H7, Listeria monocytogenes, and Staphylococcus aureus on Fresh-Cut Cantaloupe. PLoS One 2016; 11:e0166874. [PMID: 27906992 PMCID: PMC5132219 DOI: 10.1371/journal.pone.0166874] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 11/04/2016] [Indexed: 11/19/2022] Open
Abstract
Fresh-cut cantaloupe is particularly susceptible to contamination with pathogenic bacteria, such as Escherichia coli O157:H7, Listeria monocytogenes, and Staphylococcus aureus. Therefore, development of rapid, yet accurate detection techniques is necessary to ensure food safety. In this study, a multiplex PCR system and propidium monoazide (PMA) concentration were optimized to detect all viable pathogens in a single tube. A dual filtration system utilized a filtration membrane with different pore sizes to enrich pathogens found on fresh-cut cantaloupe. The results revealed that an optimized multiplex PCR system has the ability to effectively detect three pathogens in the same tube. The viable pathogens were simultaneously detected for PMA concentrations above 10 μg/ml. The combination of a nylon membrane (15 μm) and a micro pore filtration membrane (0.22 μm) formed the dual filtration system used to enrich pathogens. The achieved sensitivity of PMA-mPCR based on this dual filtration system was 2.6 × 103 cfu/g for L. monocytogenes, 4.3 × 10 cfu/g for E. coli O157:H7, and 3.1 × 102 cfu/g for S. aureus. Fresh-cut cantaloupe was inoculated with the three target pathogens using concentrations of 103, 102, 10, and 1 cfu/g. After 6-h of enrichment culture, assay sensitivity increased to 1 cfu/g for each of these pathogens. Thus, this technique represents an efficient and rapid detection tool for implementation on fresh-cut cantaloupe.
Collapse
Affiliation(s)
- Ke Feng
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Wenzhong Hu
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Aili Jiang
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Sarengaowa
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Yongping Xu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yu Zou
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Liu Yang
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Xin Wang
- College of Life Science, Dalian Nationalities University, Dalian, China
| |
Collapse
|
21
|
Zeng D, Chen Z, Jiang Y, Xue F, Li B. Advances and Challenges in Viability Detection of Foodborne Pathogens. Front Microbiol 2016; 7:1833. [PMID: 27920757 PMCID: PMC5118415 DOI: 10.3389/fmicb.2016.01833] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/01/2016] [Indexed: 11/13/2022] Open
Abstract
Foodborne outbreaks are a serious public health and food safety concern worldwide. There is a great demand for rapid, sensitive, specific, and accurate methods to detect microbial pathogens in foods. Conventional methods based on cultivation of pathogens have been the gold standard protocols; however, they take up to a week to complete. Molecular assays such as polymerase chain reaction (PCR), sequencing, microarray technologies have been widely used in detection of foodborne pathogens. Among molecular assays, PCR technology [conventional and real-time PCR (qPCR)] is most commonly used in the foodborne pathogen detection because of its high sensitivity and specificity. However, a major drawback of PCR is its inability to differentiate the DNA from dead and viable cells, and this is a critical factor for the food industry, regulatory agencies and the consumer. To remedy this shortcoming, researchers have used biological dyes such as ethidium monoazide and propidium monoazide (PMA) to pretreat samples before DNA extraction to intercalate the DNA of dead cells in food samples, and then proceed with regular DNA preparation and qPCR. By combining PMA treatment with qPCR (PMA-qPCR), scientists have applied this technology to detect viable cells of various bacterial pathogens in foods. The incorporation of PMA into PCR-based assays for viability detection of pathogens in foods has increased significantly in the last decade. On the other hand, some downsides with this approach have been noted, particularly to achieve complete suppression of signal of DNA from the dead cells present in some particular food matrix. Nowadays, there is a tendency of more and more researchers adapting this approach for viability detection; and a few commercial kits based on PMA are available in the market. As time goes on, more scientists apply this approach to a broader range of pathogen detections, this viability approach (PMA or other chemicals such as platinum compound) may eventually become a common methodology for the rapid, sensitive, and accurate detection of foodborne pathogens. In this review, we summarize the development in the field including progress and challenges and give our perspective in this area.
Collapse
Affiliation(s)
- Dexin Zeng
- College of Veterinary Medicine, Nanjing Agricultural University Nanjing, China
| | - Zi Chen
- College of Veterinary Medicine, Nanjing Agricultural UniversityNanjing, China; Animal Quarantine Laboratory, Jiangsu Entry-Exit Inspection and Quarantine BureauNanjing, China
| | - Yuan Jiang
- Animal Quarantine Laboratory, Jiangsu Entry-Exit Inspection and Quarantine BureauNanjing, China; Shanghai Entry-Exit Inspection and Quarantine BureauShanghai, China
| | - Feng Xue
- College of Veterinary Medicine, Nanjing Agricultural University Nanjing, China
| | - Baoguang Li
- Division of Molecular Biology, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Laurel MD, USA
| |
Collapse
|
22
|
Quantification of viable bacterial starter cultures of Virgibacillus sp. and Tetragenococcus halophilus in fish sauce fermentation by real-time quantitative PCR. Food Microbiol 2016; 57:54-62. [DOI: 10.1016/j.fm.2016.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 12/21/2015] [Accepted: 01/15/2016] [Indexed: 11/20/2022]
|
23
|
Zhong Q, Tian J, Wang B, Wang L. PMA based real-time fluorescent LAMP for detection of Vibrio parahaemolyticus in viable but nonculturable state. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.11.043] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
24
|
Xiao L, Zhang Z, Sun X, Pan Y, Zhao Y. Development of a quantitative real-time PCR assay for viable Salmonella spp. without enrichment. Food Control 2015. [DOI: 10.1016/j.foodcont.2015.03.050] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
25
|
Liu Y, Zhang Z, Wang Y, Zhao Y, Lu Y, Xu X, Yan J, Pan Y. A highly sensitive and flexible magnetic nanoprobe labeled immunochromatographic assay platform for pathogen Vibrio parahaemolyticus. Int J Food Microbiol 2015; 211:109-16. [DOI: 10.1016/j.ijfoodmicro.2015.07.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 06/29/2015] [Accepted: 07/03/2015] [Indexed: 12/30/2022]
|
26
|
Quantifying viable Vibrio parahaemolyticus and Listeria monocytogenes simultaneously in raw shrimp. Appl Microbiol Biotechnol 2015; 99:6451-62. [DOI: 10.1007/s00253-015-6715-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 05/16/2015] [Accepted: 05/21/2015] [Indexed: 02/06/2023]
|
27
|
Wang R, Zhong Y, Gu X, Yuan J, Saeed AF, Wang S. The pathogenesis, detection, and prevention of Vibrio parahaemolyticus. Front Microbiol 2015; 6:144. [PMID: 25798132 PMCID: PMC4350439 DOI: 10.3389/fmicb.2015.00144] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 02/07/2015] [Indexed: 12/02/2022] Open
Abstract
Vibrio parahaemolyticus, a Gram-negative motile bacterium that inhabits marine and estuarine environments throughout the world, is a major food-borne pathogen that causes life-threatening diseases in humans after the consumption of raw or undercooked seafood. The global occurrence of V. parahaemolyticus accentuates the importance of investigating its virulence factors and their effects on the human host. This review describes the virulence factors of V. parahaemolyticus reported to date, including hemolysin, urease, two type III secretion systems and two type VI secretion systems, which both cause both cytotoxicity in cultured cells and enterotoxicity in animal models. We describe various types of detection methods, based on virulence factors, that are used for quantitative detection of V. parahaemolyticus in seafood. We also discuss some useful preventive measures and therapeutic strategies for the diseases mediated by V. parahaemolyticus, which can reduce, to some extent, the damage to humans and aquatic animals attributable to V. parahaemolyticus. This review extends our understanding of the pathogenic mechanisms of V. parahaemolyticus mediated by virulence factors and the diseases it causes in its human host. It should provide new insights for the diagnosis, treatment, and prevention of V. parahaemolyticus infection.
Collapse
Affiliation(s)
- Rongzhi Wang
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| | - Yanfang Zhong
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| | - Xiaosong Gu
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| | - Jun Yuan
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| | - Abdullah F Saeed
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| | - Shihua Wang
- Key Laboratory of Biopesticide and Chemical Biology of Education Ministry and Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University Fuzhou, China
| |
Collapse
|
28
|
Moreno L, Aznar R, Sánchez G. Application of viability PCR to discriminate the infectivity of hepatitis A virus in food samples. Int J Food Microbiol 2015; 201:1-6. [PMID: 25720326 DOI: 10.1016/j.ijfoodmicro.2015.02.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/06/2015] [Accepted: 02/09/2015] [Indexed: 11/19/2022]
Abstract
Transmitted through the fecal-oral route, the hepatitis A virus (HAV) is acquired primarily through close personal contact and foodborne transmission. HAV detection in food is mainly carried out by quantitative RT-PCR (RT-qPCR). The discrimination of infectious and inactivated viruses remains a key obstacle when using RT-qPCR to quantify enteric viruses in food samples. Initially, viability dyes, propidium monoazide (PMA) and ethidium monoazide (EMA), were evaluated for the detection and quantification of infectious HAV in lettuce wash water. Results showed that PMA combined with 0.5% Triton X-100 (Triton) was the best pretreatment to assess HAV infectivity and completely eliminated the signal of thermally inactivated HAV in lettuce wash water. This procedure was further evaluated in artificially inoculated foods (at concentrations of ca. 6×10(4), 6×10(3) and 6×10(2)TCID50) including lettuce, parsley, spinach, cockles and coquina clams. The PMA-0.5% Triton pretreatment reduced the signal of thermally inactivated HAV between 0.5 and 2 logs, in lettuce and spinach concentrates. Moreover, this pretreatment reduced the signal of inactivated HAV by more than 1.5 logs, in parsley and ten-fold diluted shellfish samples inoculated at the lowest concentration. Overall, this pretreatment (50 μM PMA-0.5% Triton) significantly reduced the detection of thermally inactivated HAV, depending on the initial virus concentration and the food matrix.
Collapse
Affiliation(s)
- L Moreno
- Department of Microbiology and Ecology, University of Valencia, Av. Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - R Aznar
- Department of Microbiology and Ecology, University of Valencia, Av. Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain; Department of Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), Av. Agustín Escardino, 7, 46980 Paterna, Valencia, Spain
| | - G Sánchez
- Department of Microbiology and Ecology, University of Valencia, Av. Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain; Department of Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), Av. Agustín Escardino, 7, 46980 Paterna, Valencia, Spain.
| |
Collapse
|
29
|
Barbau-Piednoir E, Mahillon J, Pillyser J, Coucke W, Roosens NH, Botteldoorn N. Evaluation of viability-qPCR detection system on viable and dead Salmonella serovar Enteritidis. J Microbiol Methods 2014; 103:131-7. [DOI: 10.1016/j.mimet.2014.06.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 06/02/2014] [Accepted: 06/02/2014] [Indexed: 11/25/2022]
|
30
|
Ceuppens S, Li D, Uyttendaele M, Renault P, Ross P, Ranst MV, Cocolin L, Donaghy J. Molecular Methods in Food Safety Microbiology: Interpretation and Implications of Nucleic Acid Detection. Compr Rev Food Sci Food Saf 2014; 13:551-577. [DOI: 10.1111/1541-4337.12072] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/09/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Siele Ceuppens
- Faculty of Bioscience Engineering; Laboratory of Food Microbiology and Food Preservation (LFMFP); Dept. of Food Safety and Food Quality; Ghent Univ.; Ghent Belgium
| | - Dan Li
- Faculty of Bioscience Engineering; Laboratory of Food Microbiology and Food Preservation (LFMFP); Dept. of Food Safety and Food Quality; Ghent Univ.; Ghent Belgium
| | - Mieke Uyttendaele
- Faculty of Bioscience Engineering; Laboratory of Food Microbiology and Food Preservation (LFMFP); Dept. of Food Safety and Food Quality; Ghent Univ.; Ghent Belgium
| | - Pierre Renault
- Inst. Scientifique de Recherche Agronomique (INRA); France
| | - Paul Ross
- Moorepark Biotechnology Centre; Teagasc; Moorepark; Fermoy Co. Cork Ireland
| | | | - Luca Cocolin
- Dept. of Agricultural; Forest and Food Sciences; Univ. of Torino; Grugliasco Torino Italy
| | - John Donaghy
- Food Safety Microbiology Group; Nestle Research Center; Lausanne Switzerland
| |
Collapse
|
31
|
Chiao TH, Clancy TM, Pinto A, Xi C, Raskin L. Differential resistance of drinking water bacterial populations to monochloramine disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:4038-47. [PMID: 24625288 DOI: 10.1021/es4055725] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The impact of monochloramine disinfection on the complex bacterial community structure in drinking water systems was investigated using culture-dependent and culture-independent methods. Changes in viable bacterial diversity were monitored using culture-independent methods that distinguish between live and dead cells based on membrane integrity, providing a highly conservative measure of viability. Samples were collected from lab-scale and full-scale drinking water filters exposed to monochloramine for a range of contact times. Culture-independent detection of live cells was based on propidium monoazide (PMA) treatment to selectively remove DNA from membrane-compromised cells. Quantitative PCR (qPCR) and pyrosequencing of 16S rRNA genes was used to quantify the DNA of live bacteria and characterize the bacterial communities, respectively. The inactivation rate determined by the culture-independent PMA-qPCR method (1.5-log removal at 664 mg·min/L) was lower than the inactivation rate measured by the culture-based methods (4-log removal at 66 mg·min/L). Moreover, drastic changes in the live bacterial community structure were detected during monochloramine disinfection using PMA-pyrosequencing, while the community structure appeared to remain stable when pyrosequencing was performed on samples that were not subject to PMA treatment. Genera that increased in relative abundance during monochloramine treatment include Legionella, Escherichia, and Geobacter in the lab-scale system and Mycobacterium, Sphingomonas, and Coxiella in the full-scale system. These results demonstrate that bacterial populations in drinking water exhibit differential resistance to monochloramine, and that the disinfection process selects for resistant bacterial populations.
Collapse
Affiliation(s)
- Tzu-Hsin Chiao
- Department of Civil and Environmental Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | | | | | | | | |
Collapse
|
32
|
Zeng J, Wei H, Zhang L, Liu X, Zhang H, Cheng J, Ma D, Zhang X, Fu P, Liu L. Rapid detection of Vibrio parahaemolyticus in raw oysters using immunomagnetic separation combined with loop-mediated isothermal amplification. Int J Food Microbiol 2014; 174:123-8. [DOI: 10.1016/j.ijfoodmicro.2014.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 11/16/2013] [Accepted: 01/04/2014] [Indexed: 10/25/2022]
|
33
|
Wang L, Li P, Zhang Z, Chen Q, Aguilar ZP, Xu H, Yang L, Xu F, Lai W, Xiong Y, Wei H. Rapid and accurate detection of viable Escherichia coli O157:H7 in milk using a combined IMS, sodium deoxycholate, PMA and real-time quantitative PCR process. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.08.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
34
|
Zhang Z, Wang L, Xu H, Aguilar ZP, Liu C, Gan B, Xiong Y, Lai W, Xu F, Wei H. Detection of non-emetic and emetic Bacillus cereus by propidium monoazide multiplex PCR (PMA-mPCR) with internal amplification control. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.07.035] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
35
|
Evaluation of Zataria multiflora Boiss. essential oil activity against Escherichia coli O157:H7, Salmonella enterica and Listeria monocytogenes by propidium monoazide quantitative PCR in vegetables. Food Control 2013. [DOI: 10.1016/j.foodcont.2013.06.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
36
|
Elizaquível P, Aznar R, Sánchez G. Recent developments in the use of viability dyes and quantitative PCR in the food microbiology field. J Appl Microbiol 2013; 116:1-13. [DOI: 10.1111/jam.12365] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/08/2013] [Accepted: 10/08/2013] [Indexed: 01/09/2023]
Affiliation(s)
- P. Elizaquível
- Department of Microbiology and Ecology; University of Valencia; Valencia Spain
| | - R. Aznar
- Department of Microbiology and Ecology; University of Valencia; Valencia Spain
- Institute of Agrochemistry and Food Technology (IATA); Spanish Council for Scientific Research (CSIC); Valencia Spain
| | - G. Sánchez
- Institute of Agrochemistry and Food Technology (IATA); Spanish Council for Scientific Research (CSIC); Valencia Spain
| |
Collapse
|
37
|
Propidium monoazide combined with real-time quantitative PCR to quantify viable Alternaria spp. contamination in tomato products. Int J Food Microbiol 2013; 165:214-20. [PMID: 23796654 DOI: 10.1016/j.ijfoodmicro.2013.05.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 05/13/2013] [Accepted: 05/17/2013] [Indexed: 11/22/2022]
Abstract
Alternaria is a common contaminating genus of fungi in fruits, grains, and vegetables that causes severe economic losses to farmers and the food industry. Furthermore, it is claimed that Alternaria spp. are able to produce phytotoxic metabolites, and mycotoxins that are unsafe for human and animal health. DNA amplification techniques are being increasingly applied to detect, identify, and quantify mycotoxigenic fungi in foodstuffs, but the inability of these methods to distinguish between viable and nonviable cells might lead to an overestimation of mycotoxin-producing living cells. A promising technique to overcome this problem is the pre-treatment of samples with nucleic acid intercalating dyes, such as propidium monoazide (PMA), prior to quantitative PCR (qPCR). PMA selectively penetrates cells with a damaged membrane inhibiting DNA amplification during qPCRs. In our study, a primer pair (Alt4-Alt5) to specifically amplify and quantify Alternaria spp. by qPCR was designed. Quantification data of qPCR achieved a detection limit of 10(2)conidia/g of tomato. Here, we have optimized for the first time a DNA amplification-based PMA sample pre-treatment protocol for detecting viable Alternaria spp. cells. Artificially inoculated tomato samples treated with 65μM of PMA, showed a reduction in the signal by almost 7cycles in qPCR between live and heat-killed Alternaria spp. conidia. The tomato matrix had a protective effect on the cells against PMA toxicity, reducing the efficiency to distinguish between viable and nonviable cells. The results reported here indicate that the PMA-qPCR method is a suitable tool for quantifying viable Alternaria cells, which could be useful for estimating potential risks of mycotoxin contamination.
Collapse
|
38
|
Xing-long X, Cong-cong L, Yang Q, Yi-gang Y, Hui W. Molecular monitoring of Escherichia coli
O157: H7 sterilization rate using qPCR and propidium monoazide treatment. Lett Appl Microbiol 2013; 56:333-9. [DOI: 10.1111/lam.12052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/25/2013] [Accepted: 01/28/2013] [Indexed: 11/29/2022]
Affiliation(s)
- X. Xing-long
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou China
| | - L. Cong-cong
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou China
| | - Q. Yang
- Dongguan entry-exit inspection and quarantine bureau of China; Dongguan China
| | - Y. Yi-gang
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou China
| | - W. Hui
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou China
| |
Collapse
|
39
|
Development of a rapid real-time PCR method as a tool to quantify viable Photobacterium phosphoreum bacteria in salmon (Salmo salar) steaks. Appl Environ Microbiol 2013; 79:2612-9. [PMID: 23396343 DOI: 10.1128/aem.03677-12] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A specific real-time PCR quantification method combined with a propidium monoazide sample treatment step was developed to determine quantitatively the viable population of the Photobacterium phosphoreum species group in raw modified-atmosphere-packed salmon. Primers were designed to amplify a 350-bp fragment of the gyrase subunit B gene (gyrB) of P. phosphoreum. The specificity of the two primers was demonstrated by using purified DNA from 81 strains of 52 different bacterial species. When these primers were used for real-time PCR in pure culture, a good correlation (R(2) of 0.99) was obtained between this method and conventional enumeration on marine agar (MA). Quantification was linear over 5 log units as confirmed by using inoculated salmon samples. On naturally contaminated fresh salmon, the new real-time PCR method performed successfully with a quantification limit of 3 log CFU/g. A correlation coefficient (R(2)) of 0.963 was obtained between the PCR method and classic enumeration on MA, followed by identification of colonies (290 isolates identified by real-time PCR or by 16S rRNA gene sequencing). A good correlation with an R(2) of 0.940 was found between the new PCR method and an available specific conductance method for P. phosphoreum. This study presents a rapid tool for producing reliable quantitative data on viable P. phosphoreum bacteria in fresh salmon in 6 h. This new culture-independent method will be valuable for future fish inspection, the assessment of raw material quality in fish processing plants, and studies on the ecology of this important specific spoilage microorganism.
Collapse
|
40
|
Elizaquível P, Sánchez G, Aznar R. Application of propidium monoazide quantitative PCR for selective detection of live Escherichia coli O157:H7 in vegetables after inactivation by essential oils. Int J Food Microbiol 2012; 159:115-21. [PMID: 23072696 DOI: 10.1016/j.ijfoodmicro.2012.08.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 07/18/2012] [Accepted: 08/06/2012] [Indexed: 11/16/2022]
Abstract
The use of propidium monoazide (PMA) is enjoying increased popularity among researchers in different fields of microbiology. Its use in combination with real-time PCR (qPCR) represents one of the most successful approaches to detect viable cells. PMA-qPCR has successfully been used to evaluate the efficacy of various disinfection technologies in different microorganisms. Initially, in this study the effect of four essential oils (EOs), cumin, clove, oregano and cinnamon, was evaluated on suspensions of the enterohemorrhagic Escherichia coli O157:H7 by PMA-qPCR, LIVE/DEAD BacLight flow cytometry analysis (LIVE/DEAD-FCM), and plate count. E. coli O157:H7 cells treated with EOs at killing concentrations were permeable to PMA which was confirmed by LIVE/DEAD-FCM. However, the PMA-qPCR assay allows specific quantification among the autochthonous microbiota of food products. Therefore, the PMA-qPCR assay was used to evaluate its applicability in artificially contaminated iceberg lettuce and soya sprouts. Amplification signal was negative for the spiking tests performed with any of the EO-killed E. coli cells. It demonstrates that the PMA-qPCR assay is a suitable technique for monitoring E. coli O157:H7 inactivation by essential oils in fresh-cut vegetables.
Collapse
Affiliation(s)
- Patricia Elizaquível
- Departamento de Microbiología y Ecología, Universitat de València, Av. Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | | | | |
Collapse
|