1
|
Kongprajug A, Chyerochana N, Rattanakul S, Denpetkul T, Sangkaew W, Somnark P, Patarapongsant Y, Tomyim K, Sresung M, Mongkolsuk S, Sirikanchana K. Integrated analyses of fecal indicator bacteria, microbial source tracking markers, and pathogens for Southeast Asian beach water quality assessment. WATER RESEARCH 2021; 203:117479. [PMID: 34365192 DOI: 10.1016/j.watres.2021.117479] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/17/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
The degradation of coastal water quality from fecal pollution poses a health risk to visitors at recreational beaches. Fecal indicator bacteria (FIB) are a proxy for fecal pollution; however the accuracy of their representation of fecal pollution health risks at recreational beaches impacted by non-point sources is disputed due to non-human derivation. This study aimed to investigate the relationship between FIB and a range of culturable and molecular-based microbial source tracking (MST) markers and pathogenic bacteria, and physicochemical parameters and rainfall. Forty-two marine water samples were collected from seven sampling stations during six events at two tourist beaches in Thailand. Both beaches were contaminated with fecal pollution as evident from the GenBac3 marker at 88%-100% detection and up to 8.71 log10 copies/100 mL. The human-specific MST marker human polyomaviruses JC and BK (HPyVs) at up to 4.33 log10 copies/100 mL with 92%-94% positive detection indicated that human sewage was likely the main contamination source. CrAssphage showed lower frequencies and concentrations; its correlations with the FIB group (i.e., total coliforms, fecal coliforms, and enterococci) and GenBac3 diminished its use as a human-specific MST marker for coastal water. Human-specific culturable AIM06 and SR14 bacteriophages and general fecal indicator coliphages also showed less sensitivity than the human-specific molecular assays. The applicability of the GenBac3 endpoint PCR assay as a lower-cost prescreening step prior to the GenBac3 qPCR assay was supported by its 100% positive predictive value, but its limited negative predictive values required subsequent qPCR confirmation. Human enteric adenovirus and Vibrio cholerae were not found in any of the samples. The HPyVs related to Vibrio parahaemolyticus, Vibrio vulnificus, and 5-d rainfall records, all of which were more prevalent and concentrated during the wet season. More monitoring is therefore recommended during wet periods. Temporal differences but no spatial differences were observed, suggesting the need for a sentinel site at each beach for routine monitoring. The exceedance of FIB water quality standards did not indicate increased prevalence or concentrations of the HPyVs or Vibrio spp. pathogen group, so the utility of FIB as an indicator of health risks at tropical beaches maybe challenged. Accurate assessment of fecal pollution by incorporating MST markers could lead to developing a more effective water quality monitoring plan to better protect human health risks in tropical recreational beaches.
Collapse
Affiliation(s)
- Akechai Kongprajug
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Natcha Chyerochana
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Surapong Rattanakul
- Department of Environmental Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Thammanitchpol Denpetkul
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, 10400 Bangkok, Thailand
| | - Watsawan Sangkaew
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Pornjira Somnark
- Applied Biological Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok 10210, Thailand
| | - Yupin Patarapongsant
- Behavioral Research and Informatics in Social Sciences Research Unit, SASIN School of Management, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kanokpon Tomyim
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Montakarn Sresung
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Skorn Mongkolsuk
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology, Ministry of Education, Bangkok 10400, Thailand
| | - Kwanrawee Sirikanchana
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology, Ministry of Education, Bangkok 10400, Thailand.
| |
Collapse
|
2
|
Sadsri V, Trakulsujaritchok T, Tangwattanachuleeporn M, Hoven VP, Na Nongkhai P. Simple Colorimetric Assay for Vibrio parahaemolyticus Detection Using Aptamer-Functionalized Nanoparticles. ACS OMEGA 2020; 5:21437-21442. [PMID: 32905329 PMCID: PMC7469129 DOI: 10.1021/acsomega.0c01795] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
Simple, rapid, and sensitive screening methods are the key to prevent and control the spread of foodborne diseases. In this study, a simple visual colorimetric assay using magnetic nanoparticles (MNPs) and gold nanoparticles (AuNPs) was developed for the detection of Vibrio parahaemolyticus. First, the aptamer responding to V. parahaemolyticus was conjugated onto the surface of MNPs and used as a specific magnetic separator. In addition, the aptamer was also immobilized on the surface of AuNPs and used as a colorimetric detector. In the presence of V. parahaemolyticus, a sandwich structure of MNP-aptamer-bacteria-aptamer-AuNPs is formed through specific recognition of the aptamer and V. parahaemolyticus. The magnetic separation technique was then applied to generate a detection signal. Owing to the optical properties of AuNPs, a visual signal could be observed, resulting in an instrument-free colorimetric detection. Under optimal conditions, this assay shows a linear response toward V. parahaemolyticus concentration through the range of 10-106 cfu/mL, with a limit of detection of 2.4 cfu/mL. This method was also successfully applied for V. parahaemolyticus detection in spiked raw shrimp samples.
Collapse
Affiliation(s)
- Varunee Sadsri
- Department
of Chemistry, Faculty of Science, Burapha
University, Muang, Chonburi 20131, Thailand
| | - Thanida Trakulsujaritchok
- Department
of Chemistry, Faculty of Science, Burapha
University, Muang, Chonburi 20131, Thailand
- Center
of Excellence for Innovation in Chemistry, Burapha University, Muang, Chonburi 20131, Thailand
| | - Marut Tangwattanachuleeporn
- Faculty
of Allied Health Sciences, Burapha University, Muang, Chonburi 20131, Thailand
- Sensor
Innovation Research Unit (SIRU), Burapha
University, Muang, Chonburi 20131, Thailand
| | - Voravee P. Hoven
- Department
of Chemistry, Faculty of Science, Chulalongkorn
University, Phayathai
Road, Pathumwan, Bangkok 10330, Thailand
- Center of
Excellence in Materials and Biointerfaces, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Piyaporn Na Nongkhai
- Department
of Chemistry, Faculty of Science, Burapha
University, Muang, Chonburi 20131, Thailand
- Center
of Excellence for Innovation in Chemistry, Burapha University, Muang, Chonburi 20131, Thailand
- Sensor
Innovation Research Unit (SIRU), Burapha
University, Muang, Chonburi 20131, Thailand
| |
Collapse
|
3
|
Application of Bayesian statistics to model Incidence of Vibrio parahaemolyticus associated with fishery products and their geographical distribution in China. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Bunpa S, Nishibuchi M, Thawonsuwan J, Sermwittayawong N. Genetic heterogeneity among Vibrio alginolyticus strains, and design of a PCR-based identification method using gyrB gene sequence. Can J Microbiol 2017; 64:1-10. [PMID: 29017024 DOI: 10.1139/cjm-2017-0269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vibrio alginolyticus, a pathogen among humans and marine animals, is ubiquitous in marine environments. The aims of this study were to analyze the relationships between genetic diversity and origins, and to develop new primers based on the gyrB sequence to identify V. alginolyticus isolated from various sources. To determine the genetic diversity of this bacterium, an arbitrarily primed polymerase chain reaction (AP-PCR) technique was performed on 36 strains of V. alginolyticus isolated from diarrhea patients and from diseased marine animals and environments in southern Thailand. The results showed distinct DNA fingerprints of all strains, indicating that they are genetically heterogeneous. For species-specific identification of V. alginolyticus, primers targeting the gyrB gene of V. alginolyticus were developed. Thirty reference Vibrio spp., 13 non-Vibrio spp., and 160 strains of V. alginolyticus isolated from various sources in southern Thailand were used to evaluate the specificity of these primers. Our results showed that the gyrB primers could specifically identify V. alginolyticus from all sample types. In addition, the detection limit of the PCR was at least 95 pg of DNA template. Therefore, we concluded that the newly designed gyrB primers are rapid, highly sensitive, and specific to identify V. alginolyticus isolated from various sources.
Collapse
Affiliation(s)
- Supansa Bunpa
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
| | - Mitsuaki Nishibuchi
- c Center for Southeast Asian Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Jumroensri Thawonsuwan
- d Coastal Aquatic Animal Health Research Institute, Coastal Fisheries Research and Development Division, Department of Fisheries, Songkhla 90100, Thailand
| | - Natthawan Sermwittayawong
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
| |
Collapse
|
5
|
Species diversity, spatial distribution, and virulence associated genes of culturable vibrios in a brackish coastal Mediterranean environment. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1073-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
6
|
Takemura AF, Chien DM, Polz MF. Associations and dynamics of Vibrionaceae in the environment, from the genus to the population level. Front Microbiol 2014; 5:38. [PMID: 24575082 PMCID: PMC3920100 DOI: 10.3389/fmicb.2014.00038] [Citation(s) in RCA: 217] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 01/20/2014] [Indexed: 12/02/2022] Open
Abstract
The Vibrionaceae, which encompasses several potential pathogens, including V. cholerae, the causative agent of cholera, and V. vulnificus, the deadliest seafood-borne pathogen, are a well-studied family of marine bacteria that thrive in diverse habitats. To elucidate the environmental conditions under which vibrios proliferate, numerous studies have examined correlations with bulk environmental variables—e.g., temperature, salinity, nitrogen, and phosphate—and association with potential host organisms. However, how meaningful these environmental associations are remains unclear because data are fragmented across studies with variable sampling and analysis methods. Here, we synthesize findings about Vibrio correlations and physical associations using a framework of increasingly fine environmental and taxonomic scales, to better understand their dynamics in the wild. We first conduct a meta-analysis to determine trends with respect to bulk water environmental variables, and find that while temperature and salinity are generally strongly predictive correlates, other parameters are inconsistent and overall patterns depend on taxonomic resolution. Based on the hypothesis that dynamics may better correlate with more narrowly defined niches, we review evidence for specific association with plants, algae, zooplankton, and animals. We find that Vibrio are attached to many organisms, though evidence for enrichment compared to the water column is often lacking. Additionally, contrary to the notion that they flourish predominantly while attached, Vibrio can have, at least temporarily, a free-living lifestyle and even engage in massive blooms. Fine-scale sampling from the water column has enabled identification of such lifestyle preferences for ecologically cohesive populations, and future efforts will benefit from similar analysis at fine genetic and environmental sampling scales to describe the conditions, habitats, and resources shaping Vibrio dynamics.
Collapse
Affiliation(s)
- Alison F Takemura
- Parsons Lab for Environmental Science and Engineering, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology Cambridge, MA, USA
| | - Diana M Chien
- Parsons Lab for Environmental Science and Engineering, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology Cambridge, MA, USA
| | - Martin F Polz
- Parsons Lab for Environmental Science and Engineering, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology Cambridge, MA, USA
| |
Collapse
|