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Fuke N, Yamashita T, Shimizu S, Matsumoto M, Sawada K, Jung S, Tokuda I, Misawa M, Suzuki S, Ushida Y, Mikami T, Itoh K, Suganuma H. Association of Plasma Lipopolysaccharide-Binding Protein Concentration with Dietary Factors, Gut Microbiota, and Health Status in the Japanese General Adult Population: A Cross-Sectional Study. Metabolites 2023; 13:metabo13020250. [PMID: 36837869 PMCID: PMC9965710 DOI: 10.3390/metabo13020250] [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: 12/27/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
The influx of intestinal bacteria-derived lipopolysaccharide (LPS) into the blood has attracted attention as a cause of diseases. The aim of this study is investigating the associations between the influx of LPS, dietary factors, gut microbiota, and health status in the general adult population. Food/nutrient intake, gut microbiota, health status and plasma LPS-binding protein (LBP; LPS exposure indicator) were measured in 896 residents (58.1% female, mean age 54.7 years) of the rural Iwaki district of Japan, and each correlation was analyzed. As the results, plasma LBP concentration correlated with physical (right/left arms' muscle mass [β = -0.02, -0.03]), renal (plasma renin activity [β = 0.27], urine albumin creatinine ratio [β = 0.50]), adrenal cortical (cortisol [β = 0.14]), and thyroid function (free thyroxine [β = 0.05]), iron metabolism (serum iron [β = -0.14]), and markers of lifestyle-related diseases (all Qs < 0.20). Plasma LBP concentration were mainly negatively correlated with vegetables/their nutrients intake (all βs ≤ -0.004, Qs < 0.20). Plasma LBP concentration was positively correlated with the proportion of Prevotella (β = 0.32), Megamonas (β = 0.56), and Streptococcus (β = 0.65); and negatively correlated with Roseburia (β = -0.57) (all Qs < 0.20). Dietary factors correlated with plasma LBP concentration correlated with positively (all βs ≥ 0.07) or negatively (all βs ≤ -0.07) the proportion of these bacteria (all Qs < 0.20). Our results suggested that plasma LBP concentration in the Japanese general adult population was associated with various health issues, and that dietary habit was associated with plasma LBP concentration in relation to the intestinal bacteria.
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Affiliation(s)
- Nobuo Fuke
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
- Correspondence: ; Tel.: +81-80-1573-5815
| | - Takahiro Yamashita
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Sunao Shimizu
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
- Department of Vegetable Life Science, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Mai Matsumoto
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Kaori Sawada
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Songee Jung
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
- Department of Digital Nutrition and Health Sciences, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Itoyo Tokuda
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Mina Misawa
- Center of Innovation Research Initiatives Organization, Hirosaki University, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Shigenori Suzuki
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Yusuke Ushida
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Ken Itoh
- Department of Vegetable Life Science, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Hiroyuki Suganuma
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
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Ma JY, Zhu XK, Hu RG, Qi ZZ, Sun WC, Hao ZP, Cong W, Kang YH. A systematic review, meta-analysis and meta-regression of the global prevalence of foodborne Vibrio spp. infection in fishes: A persistent public health concern. MARINE POLLUTION BULLETIN 2023; 187:114521. [PMID: 36621299 DOI: 10.1016/j.marpolbul.2022.114521] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 12/14/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Human vibriosis, caused by pathogenic Vibrio spp., such as Vibrio parahaemolyticus, Vibrio cholerae and Vibrio vulnificus, has been increasing worldwide, mediated by increasing consumption of seafood. The present study was conducted to examine the global prevalence of V. vulnificus, V. parahaemolyticus and V. cholerae in fishes. We searched PubMed, Web of Science, Scopus, and CNKI for peer-reviewed articles and dissertations prior to December 31, 2021. A total of 24,831 articles were retrieved, and 82 articles contained 61 fish families were included. The global pooled prevalence of V. cholerae, V. parahaemolyticus and V. vulnificus in fishes was 9.56 % (95 % CI: 2.12-20.92), 24.77 % (95 % CI: 17.40-32.93) and 5.29 % (95 % CI: 0.38-13.61), respectively. Subgroup and meta-regression analyses showed that study-level covariates, including temperature, country, continent, origin and detection methods partly explained the between-study heterogeneity. These heterogeneities were underpinned by differences of the three Vibrio spp. in fishes at geographical and climatic scales. These results reveal a high global prevalence of pathogenic Vibrio spp. in fishes and highlight the need for implementation of more effective prevention and control measures to reduce food-borne infection in humans.
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Affiliation(s)
- Jun-Yang Ma
- Marine College, Shandong University, Weihai, Shandong 264209, PR China
| | - Xin-Kun Zhu
- Marine College, Shandong University, Weihai, Shandong 264209, PR China
| | - Ren-Ge Hu
- Marine College, Shandong University, Weihai, Shandong 264209, PR China
| | - Ze-Zheng Qi
- Marine College, Shandong University, Weihai, Shandong 264209, PR China
| | - Wen-Chao Sun
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 32503, PR China
| | - Zhi-Peng Hao
- Marine College, Shandong University, Weihai, Shandong 264209, PR China
| | - Wei Cong
- Marine College, Shandong University, Weihai, Shandong 264209, PR China.
| | - Yuan-Huan Kang
- Marine College, Shandong University, Weihai, Shandong 264209, PR China.
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Detection and Quantification of Total and Pathogenic Vibrio parahaemolyticus in Anadara subcrenata in the Zhoushan Archipelago. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2019; 2019:5481935. [PMID: 31885752 PMCID: PMC6899326 DOI: 10.1155/2019/5481935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 09/11/2019] [Accepted: 10/23/2019] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the prevalence of total and pathogenic Vibrio parahaemolyticus in Anadara subcrenata sampled from aquafarms and retail markets in the Zhoushan islands during June 2013 to March 2015, using the most probable number-polymerase chain reaction (MPN-PCR) method. Total V. parahaemolyticus was detected in 265 (83.86%) samples with the density 0.3 to 2400 MPN/g. In total, 30.70% and 17.41% of the samples exceeded 100 MPN/g and 1,000 MPN/g, respectively. Both highest positive rate (98.99%) and highest prevalence (median = 210.0 MPN/g) were recorded in summer. Samples from aquafarms had a higher positive rate and median than those from retail markets. Pathogenic V. parahaemolyticus was detected both in aquafarms and retail markets in all seasons but not in winter. Among the 265 tlh-positive samples, 20 (7.55%) of the samples harbored tdh, and 5 (1.89%) of the samples harbored both tdh and trh. These results indicate that the Zhoushan archipelago is severely contaminated with V. parahaemolyticus in Anadara subcrenata; these results are applicable in risk assessment and to control the risk of food-borne disease caused by V. parahaemolyticus.
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SONG X, WU Y, WU L, HU Y, LI W, GUO Z, SU X, JIANG X. Christmas-tree Derived Amplification Immuno-strategy for Sensitive Visual Detection of Vibrio parahaemolyticus Based on Gold Label Silver Stain Technology. ANAL SCI 2017; 33:889-895. [DOI: 10.2116/analsci.33.889] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Xinxin SONG
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Yanjie WU
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Lin WU
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Yufang HU
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Wenrou LI
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Zhiyong GUO
- Faculty of Materials Science and Chemical Engineering, Ningbo University
| | - Xiurong SU
- School of Marine Sciences, Ningbo University
| | - Xiaohua JIANG
- School of Applied Chemistry and Biological Technology, Shenzhen Polytechnic
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Odeyemi OA. Incidence and prevalence of Vibrio parahaemolyticus in seafood: a systematic review and meta-analysis. SPRINGERPLUS 2016; 5:464. [PMID: 27119068 PMCID: PMC4831955 DOI: 10.1186/s40064-016-2115-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 04/06/2016] [Indexed: 01/12/2023]
Abstract
Vibrio parahaemolyticus is an important seafood borne human pathogen worldwide due to it occurrence, prevalence and ability to cause gastrointestinal infections. This current study aim at investigating the incidence and prevalence of V. parahaemolyticus in seafood using systematic review-meta-analysis by exploring heterogeneity among primary studies. A comprehensive systematic review and meta-analysis of peer reviewed primary studies reported between 2003 and 2015 for the occurrence and prevalence of V. parahaemolyticus in seafood was conducted using “isolation”, “detection”, “prevalence”, “incidence”, “occurrence” or “enumeration” and V. parahaemolyticus as search algorithms in Web of Science (Science Direct) and ProQuest of electronic bibliographic databases. Data extracted from the primary studies were then analyzed with fixed effect meta-analysis model for effect rate to explore heterogeneity between the primary studies. Publication bias was evaluated using funnel plot. A total of 10,819 articles were retrieved from the data bases of which 48 studies met inclusion criteria. V. parahaemolyticus could only be isolated from 2761 (47.5 %) samples of 5811 seafood investigated. The result of this study shows that incidence of V. parahaemolyticus was more prevalent in oysters with overall prevalence rate of 63.4 % (95 % CI 0.592–0.674) than other seafood. Overall prevalence rate of clams was 52.9 % (95 % CI 0.490–0.568); fish 51.0 % (95 % CI 0.476–0.544); shrimps 48.3 % (95 % CI 0.454–0.512) and mussels, scallop and periwinkle: 28.0 % (95 % CI 0.255–0.307). High heterogeneity (p value <0.001; I2 = 95.291) was observed mussel compared to oysters (I2 = 91.024). It could be observed from this study that oysters harbor V. parahaemolyticus based on the prevalence rate than other seafood investigated. The occurrence and prevalence of V. parahaemolyticus is of public health importance, hence, more studies involving seafood such as mussels need to be investigated.
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Affiliation(s)
- Olumide A Odeyemi
- Ecology and Biodiversity Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Launceston, Australia
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Sha Y, Zhang X, Li W, Wu W, Wang S, Guo Z, Zhou J, Su X. A label-free multi-functionalized graphene oxide based electrochemiluminscence immunosensor for ultrasensitive and rapid detection of Vibrio parahaemolyticus in seawater and seafood. Talanta 2016; 147:220-5. [DOI: 10.1016/j.talanta.2015.09.058] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/18/2015] [Accepted: 09/24/2015] [Indexed: 11/29/2022]
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Han H, Li F, Yan W, Guo Y, Li N, Liu X, Zhu J, Xu J, Chen Y, Li X, Lv H, Zhang Y, Cai T, Chen Y. Temporal and Spatial Variation in the Abundance of Total and Pathogenic Vibrio parahaemolyticus in Shellfish in China. PLoS One 2015; 10:e0130302. [PMID: 26061712 PMCID: PMC4465338 DOI: 10.1371/journal.pone.0130302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 05/19/2015] [Indexed: 01/22/2023] Open
Abstract
We investigated the abundance of total and pathogenic Vibrio parahaemolyticus in shellfish sampled from four provinces in China during May 2013 and March 2014 using the most probable number-polymerase chain reaction (MPN-PCR) method. Total V. parahaemolyticus was detected in 67.7% of 496 samples. A total of 38.1% and 10.1% of samples exceeded 1,000 MPN g-1 and 10,000 MPN g-1, respectively. V. parahaemolyticus densities followed a seasonal and geographical trend, with Guangxi and Sichuan shellfish possessing total V. parahaemolyticus levels that were 100-fold higher than those of the Liaoning and Shandong regions. Moreover, the levels of V. parahaemolyticus were at least 10-fold higher in the summer and autumn than in the cooler seasons. Pathogenic V. parahaemolyticus levels were generally lower than total V. parahaemolyticus levels by several log units and tended to be high in samples contaminated with high total V. parahaemolyticus levels. The aqua farms had a lower prevalence but higher abundance of total V. parahaemolyticus compared to retail markets. The catering markets showed the lowest levels of total V. parahaemolyticus, but 20.0% of samples exceeded 1,000 MPN g-1. The levels of both total and pathogenic V. parahaemolyticus in oysters were higher than in clams. The log-transformed abundance of V. parahaemolyticus was significantly correlated with both water temperature and air temperature but not water salinity. These results provide baseline contamination data of V. parahaemolyticus in shellfish in China, which can be applied to local risk assessments to prioritize risk control to key sectors and evaluate the effectiveness of future control measures.
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Affiliation(s)
- Haihong Han
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing, China
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Fengqin Li
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Weixing Yan
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Yunchang Guo
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
- * E-mail: (YG); (NL)
| | - Ning Li
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
- * E-mail: (YG); (NL)
| | - Xiumei Liu
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Jianghui Zhu
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Jin Xu
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Yan Chen
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Xiugui Li
- Institute of Microbiological Examination, Guangxi Regional Center for Disease Control and Prevention, Nanning, China
| | - Hong Lv
- Institute of Microbiological Examination, Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Yiqian Zhang
- Faculty of Sciences, University of Waterloo, Waterloo, Canada
| | - Te Cai
- Department of Testing, Dalian Xigang District Center for Disease Control and Prevention, Dalian, China
| | - Yuzhen Chen
- Institute of Bacterial Infectious Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan, China
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Letchumanan V, Chan KG, Lee LH. Vibrio parahaemolyticus: a review on the pathogenesis, prevalence, and advance molecular identification techniques. Front Microbiol 2014; 5:705. [PMID: 25566219 PMCID: PMC4263241 DOI: 10.3389/fmicb.2014.00705] [Citation(s) in RCA: 280] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 11/27/2014] [Indexed: 12/13/2022] Open
Abstract
Vibrio parahaemolyticus is a Gram-negative halophilic bacterium that is found in estuarine, marine and coastal environments. V. parahaemolyticus is the leading causal agent of human acute gastroenteritis following the consumption of raw, undercooked, or mishandled marine products. In rare cases, V. parahaemolyticus causes wound infection, ear infection or septicaemia in individuals with pre-existing medical conditions. V. parahaemolyticus has two hemolysins virulence factors that are thermostable direct hemolysin (tdh)-a pore-forming protein that contributes to the invasiveness of the bacterium in humans, and TDH-related hemolysin (trh), which plays a similar role as tdh in the disease pathogenesis. In addition, the bacterium is also encodes for adhesions and type III secretion systems (T3SS1 and T3SS2) to ensure its survival in the environment. This review aims at discussing the V. parahaemolyticus growth and characteristics, pathogenesis, prevalence and advances in molecular identification techniques.
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Affiliation(s)
- Vengadesh Letchumanan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Bandar Sunway, Malaysia ; Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya Kuala Lumpur, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya Kuala Lumpur, Malaysia
| | - Learn-Han Lee
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Bandar Sunway, Malaysia
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HARA-KUDO Y, KUMAGAI S. Impact of seafood regulations for Vibrio parahaemolyticus infection and verification by analyses of seafood contamination and infection. Epidemiol Infect 2014; 142:2237-47. [PMID: 25078437 PMCID: PMC9151258 DOI: 10.1017/s0950268814001897] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/13/2014] [Accepted: 07/02/2014] [Indexed: 11/06/2022] Open
Abstract
Consumption of seafood contaminated with Vibrio parahaemolyticus causes foodborne infections, which are on the rise owing to increased consumption of raw seafood in Asia, Europe, North America, and other regions. V. parahaemolyticus infections have been common in Japan since the 1960s. Following an epidemic in 1997, the Japanese Ministry of Health, Labour, and Welfare instituted regulations for seafood in 1999, which appear to be reducing V. parahaemolyticus infections. In this review, we describe the scientific findings for these regulations. Analyses of the V. parahaemolyticus serotypes and isolate characteristics in samples from infected patients and contaminated seafood are discussed. In addition, based on the results of a survey, we show that new food safety regulations have led to improvements in food hygiene at many seafood retail shops, food service facilities, and restaurants. This example from Japan could be of immense help to control foodborne infections in other countries.
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Affiliation(s)
- Y. HARA-KUDO
- Division of Microbiology, National Institute of Health Sciences, Kamiyoga, Setagaya-ku, Tokyo, Japan
| | - S. KUMAGAI
- Food Safety Commission, Akasaka, Minato-ku, Tokyo, Japan
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Tanaka N, Iwade Y, Yamazaki W, Gondaira F, Vuddhakul V, Nakaguchi Y, Nishibuchi M. Most-probable-number loop-mediated isothermal amplification-based procedure enhanced with K antigen-specific immunomagnetic separation for quantifying tdh(+) Vibrio parahaemolyticus in molluscan Shellfish. J Food Prot 2014; 77:1078-85. [PMID: 24988012 DOI: 10.4315/0362-028x.jfp-13-536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although thermostable direct hemolysin-producing (tdh(+)) Vibrio parahaemolyticus is the leading cause of seafood-borne gastroenteritis, the enumeration of tdh(+) V. parahaemolyticus remains challenging due to its low densities in the environment. In this study, we developed a most-probable-number (MPN)-based procedure designated A-IS(1)-LAMP, in which an immunomagnetic separation (IMS) technique targeting as many as 69 established K antigens and a loop-mediated isothermal amplification (LAMP) assay targeting the thermostable direct hemolysin (tdh) gene were applied in an MPN format. Our IMS employed PickPen, an eight-channel intrasolution magnetic particle separation device, which enabled a straightforward microtiter plate-based IMS procedure (designated as PickPen-IMS). The ability of the procedure to quantify a wide range of tdh(+) V. parahaemolyticus levels was evaluated by testing shellfish samples in Japan and southern Thailand, where shellfish products are known to contain relatively low and high levels of total V. parahaemolyticus, respectively. The Japanese and Thai shellfish samples showed, respectively, relatively low (< 3 to 11 MPN/10 g) and considerably higher (930 to 110,000 MPN/10 g) levels of tdh(+) V. parahaemolyticus, raising concern about the safety of Thai shellfish products sold to domestic consumers at local morning markets. LAMP showed similar or higher performance than conventional PCR in the detection and quantification of a wide range of tdh(+) V. parahaemolyticus levels in shellfish products. Whereas a positive effect of PickPen-IMS was not observed in MPN determination, PickPen-IMS was able to concentrate tdh(+) V. parahaemolyticus 32-fold on average from the Japanese shellfish samples at an individual tube level, suggesting a possibility of using PickPen-IMS as an optional tool for specific shellfish samples. The A-IS(1)-LAMP procedure can be used by any health authority in the world to measure the tdh(+) V. parahaemolyticus levels in shellfish products.
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Affiliation(s)
- Natsuko Tanaka
- Graduate School of Medicine, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshito Iwade
- Mie Prefecture Health and Environment Research Institute, Sakura-cho, Yokkaichi-shi, Mie 512-1211, Japan
| | - Wataru Yamazaki
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Gakuenkibanadainishi, Miyazaki-shi, Miyazaki 889 2192, Japan
| | - Fumio Gondaira
- Denka Seiken Co., Ltd., Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8338, Japan
| | - Varaporn Vuddhakul
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai 90110, Thailand
| | - Yoshitsugu Nakaguchi
- Center for Southeast Asian Studies, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuaki Nishibuchi
- Center for Southeast Asian Studies, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
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11
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Inoue Y, Nakaho K. Sensitive quantitative detection of Ralstonia solanacearum in soil by the most probable number-polymerase chain reaction (MPN-PCR) method. Appl Microbiol Biotechnol 2014; 98:4169-77. [PMID: 24584461 DOI: 10.1007/s00253-014-5604-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 02/07/2014] [Accepted: 02/08/2014] [Indexed: 11/28/2022]
Abstract
We developed a sensitive quantitative assay for detecting Ralstonia solanacearum in soil by most probable number (MPN) analysis based on bio-PCR results. For development of the detection method, we optimized an elution buffer containing 5 g/L skim milk for extracting bacteria from soil and reducing contamination of polymerase inhibitors in soil extracts. Because R. solanacearum can grow in water without any added nutrients, we used a cultivation buffer in the culture step of the bio-PCR that contained only the buffer and antibiotics to suppress the growth of other soil microorganisms. To quantify the bacterial population in soil, the elution buffer was added to 10 g soil on a dry weight basis so that the combined weight of buffer, soil, and soil-water was 50 g; 5 mL of soil extract was assumed to originate from 1 g of soil. The soil extract was divided into triplicate aliquots each of 5 mL and 500, 50, and 5 μL. Each aliquot was diluted with the cultivation buffer and incubated at 35 °C for about 24 h. After incubation, 5 μL of culture was directly used for nested PCR. The number of aliquots showing positive results was collectively checked against the MPN table. The method could quantify bacterial populations in soil down to 3 cfu/10 g dried soil and was successfully applied to several types of soil. We applied the method for the quantitative detection of R. solanacearum in horticultural soils, which could quantitatively detect small populations (9.3 cfu/g), but the semiselective media were not able to detect the bacteria.
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Affiliation(s)
- Yasuhiro Inoue
- National Agricultural Research Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8666, Japan,
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Nemoto J, Ikedo M, Kojima T, Momoda T, Konuma H, Hara-Kudo Y. Development and evaluation of a loop-mediated isothermal amplification assay for rapid and sensitive detection of Vibrio parahaemolyticus. J Food Prot 2011; 74:1462-7. [PMID: 21902914 DOI: 10.4315/0362-028x.jfp-10-519] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Loop-mediated isothermal amplification (LAMP) assays targeting the rpoD and toxR genes were developed to detect Vibrio parahaemolyticus. All 78 tested V. parahaemolyticus strains yielded positive results within 40 min, while negative results were obtained for 69 strains of other organisms even at 60 min. For V. parahaemolyticus ATCC 17802 in pure culture, the detection limits of LAMP assays targeting rpoD and toxR were 3.7 and 450 CFU per test, respectively. Due to the higher sensitivity of rpoD-LAMP, it was further evaluated for the ability to detect V. parahaemolyticus in seafood samples. V. parahaemolyticus populations spiked in short-necked clams were enumerated by the most-probable-number (MPN) method combined with the rpoD-LAMP assay and the MPN method with a culture method using agar medium. The MPN-rpoD-LAMP method had better sensitivity and was more rapid than the conventional method. These results indicate that the MPN-LAMP assay targeting the rpoD gene is a specific, sensitive, and rapid method to enumerate V. parahaemolyticus organisms.
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Affiliation(s)
- Jiro Nemoto
- Eiken Chemical Company Ltd., 143 Nogi, Nogi-machi, Shimotsuga-gun, Tochigi 329-0114, Japan.
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Evaluation of different procedures for the optimized detection of Vibrio parahaemolyticus in mussels and environmental samples. Int J Food Microbiol 2009; 129:229-36. [DOI: 10.1016/j.ijfoodmicro.2008.11.028] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 11/07/2008] [Accepted: 11/27/2008] [Indexed: 11/19/2022]
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Luan X, Chen J, Liu Y, Li Y, Jia J, Liu R, Zhang XH. Rapid quantitative detection of Vibrio parahaemolyticus in seafood by MPN-PCR. Curr Microbiol 2008; 57:218-21. [PMID: 18612685 DOI: 10.1007/s00284-008-9177-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Accepted: 04/09/2008] [Indexed: 11/30/2022]
Abstract
This study aimed to adopt MPN-PCR (most probable number-polymerase chain reaction) for rapid detection of the quantity of Vibrio parahaemolyticus in seafood. V. parahaemolyticus in seafood could be quantitated by MPN statistics according to PCR products. The sensitivity of MPN-PCR was 100 times higher than that of direct PCR. Of 225 seafood samples from Qingdao, 165 were positive for the presence of V. parahaemolyticus, with an MPN value of >719 per gram, and about 41.5% of samples were positive for tdh gene-possessing cells. Eighty muscle tissues from the 225 seafood samples were investigated by direct PCR and MPN-PCR, but no V. parahaemolyticus was detected. The MPN-PCR test could be completed in less than 16 h from the time of sample preparation. It was rapid, sensitive, and reliable for comprehensive detection and quick quantitative determination of V. parahaemolyticus in seafood and it revealed the potential risk of illness associated with their consumption.
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Affiliation(s)
- Xiaoyan Luan
- Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao, China
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Nordstrom JL, Vickery MCL, Blackstone GM, Murray SL, DePaola A. Development of a multiplex real-time PCR assay with an internal amplification control for the detection of total and pathogenic Vibrio parahaemolyticus bacteria in oysters. Appl Environ Microbiol 2007; 73:5840-7. [PMID: 17644647 PMCID: PMC2074920 DOI: 10.1128/aem.00460-07] [Citation(s) in RCA: 229] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Vibrio parahaemolyticus is an estuarine bacterium that is the leading cause of shellfish-associated cases of bacterial gastroenteritis in the United States. Our laboratory developed a real-time multiplex PCR assay for the simultaneous detection of the thermolabile hemolysin (tlh), thermostable direct hemolysin (tdh), and thermostable-related hemolysin (trh) genes of V. parahaemolyticus. The tlh gene is a species-specific marker, while the tdh and trh genes are pathogenicity markers. An internal amplification control (IAC) was incorporated to ensure PCR integrity and eliminate false-negative reporting. The assay was tested for specificity against >150 strains representing eight bacterial species. Only V. parahaemolyticus strains possessing the appropriate target genes generated a fluorescent signal, except for a late tdh signal generated by three strains of V. hollisae. The multiplex assay detected <10 CFU/reaction of pathogenic V. parahaemolyticus in the presence of >10(4) CFU/reaction of total V. parahaemolyticus bacteria. The real-time PCR assay was utilized with a most-probable-number format, and its results were compared to standard V. parahaemolyticus isolation methodology during an environmental survey of Alaskan oysters. The IAC was occasionally inhibited by the oyster matrix, and this usually corresponded to negative results for V. parahaemolyticus targets. V. parahaemolyticus tlh, tdh, and trh were detected in 44, 44, and 52% of the oyster samples, respectively. V. parahaemolyticus was isolated from 33% of the samples, and tdh(+) and trh(+) strains were isolated from 19 and 26%, respectively. These results demonstrate the utility of the real-time PCR assay in environmental surveys and its possible application to outbreak investigations for the detection of total and pathogenic V. parahaemolyticus.
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Affiliation(s)
- Jessica L Nordstrom
- Gulf Coast Seafood Laboratory, Division of Seafood Science and Technology, US Food and Drug Administration, P.O. Box 158, Dauphin Island, AL 36528-0158, USA.
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