1
|
Brandão MADR, Lopes ATS, Neta MTDS, de Oliveira RBF, Rezende RP, Albuquerque GR, Gonçalves VD, Rodrigues DDP, Boehs G, Maciel BM. Microbiological Quality and Prevalence of β-Lactam Antibiotic Resistance Genes in Oysters ( Crassostrea rhizophorae ). J Food Prot 2017; 80:488-496. [PMID: 28207310 DOI: 10.4315/0362-028x.jfp-16-098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The microbiological quality of oysters reflects the microbiological quality of their habitats because they are filter feeders. The objective of this study was to assess the bacterial composition of the edible oyster Crassostrea rhizophorae in urban and preserved estuaries. Particularly, we assessed the presence of pathogenic bacteria, investigated antibiotic susceptibility in bacterial isolates, and quantified β-lactam antibiotic resistance genes (blaTEM, blaSHV, and blaKPC) via quantitative PCR of oyster DNA. Our results detected total coliforms, Escherichia coli , and enterobacteria in the oysters from urban estuaries, which is indicative of poor water quality. In addition, our detection of the eaeA and stxA2 virulence genes in 16.7% of E. coli isolates from oysters from this region suggests the presence of multiantibiotic-resistant enteropathogenic and enterohemorrhagic E. coli strains. During periods of low precipitation, increased contamination by E. coli (in winter) and Vibrio parahaemolyticus (in autumn) was observed. In contrast, cultivated oysters inhabiting monitored farms in preserved areas had low levels of bacterial contamination, emphasizing that oyster culture monitoring enhances food quality and makes oysters fit for human consumption. Distinct antibiotic resistance profiles were observed in bacteria isolated from oysters collected from different areas, including resistance to β-lactam antibiotics. The presence of the blaTEM gene in 91.3% of oyster samples indicated that microorganisms in estuarine water conferred the capability to produce β-lactamase. To our knowledge, this is the first study to directly quantify and detect β-lactam antibiotic resistance genes in oysters. We believe our study provides baseline data for bacterial dynamics in estuarine oysters; such knowledge contributes to developing risk assessments to determine the associated hazards and consequences of consuming oysters from aquatic environments containing pathogenic bacteria that may possess antibiotic resistance genes.
Collapse
Affiliation(s)
| | | | | | | | - Rachel Passos Rezende
- Graduation Program in Genetics and Molecular Biology, Santa Cruz State University, Ilhéus, Bahia, Brazil.,Department of Biological Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
| | - George Rêgo Albuquerque
- Graduation Program in Animal Science, Santa Cruz State University, Ilhéus, Bahia, Brazil.,Department of Agricultural and Environmental Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
| | | | | | - Guisla Boehs
- Department of Biological Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
| | - Bianca Mendes Maciel
- Graduation Program in Animal Science, Santa Cruz State University, Ilhéus, Bahia, Brazil.,Department of Biological Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
| |
Collapse
|
2
|
Marcelo SDO, Greiciane FCAB, Lidiane DCS, Ingrid AP, Bruno RP, Marco AONSDS, Shana MDOC, Irene DSC, D aacute lia DPR, Miliane MSDS. Detection of virulence and antibiotic resistance genes in environmental strains of Vibrio spp. from mussels along the coast of Rio de Janeiro State, Brazil. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajmr2015.7636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
3
|
Fu K, Li J, Wang Y, Liu J, Yan H, Shi L, Zhou L. An Innovative Method for Rapid Identification and Detection of Vibrio alginolyticus in Different Infection Models. Front Microbiol 2016; 7:651. [PMID: 27199971 PMCID: PMC4858747 DOI: 10.3389/fmicb.2016.00651] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/18/2016] [Indexed: 11/13/2022] Open
Abstract
Vibrio alginolyticus is one of the most common pathogenic marine Vibrio species, and has been found to cause serious seafood-poisoning or fatal extra-intestinal infections in humans, such as necrotizing soft-tissue infections, bacteremia, septic shock, and multiple organ failures. Delayed accurate diagnosis and treatment of most Vibrio infections usually result to high mortality rates. The objective of this study was to establish a rapid diagnostic method to detect and identify the presence of V. alginolyticus in different samples, so as to facilitate timely treatment. The widely employed conventional methods for detection of V. alginolyticus include biochemical identification and a variety of PCR methods. The former is of low specificity and time-consuming (2–3 days), while the latter has improved accuracy and processing time. Despite such advancements, these methods are still complicated, time-consuming, expensive, require expertise and advanced laboratory systems, and are not optimal for field use. With the goal of providing a simple and efficient way to detect V. alginolyticus, we established a rapid diagnostic method based on loop-mediated Isothermal amplification (LAMP) technology that is feasible to use in both experimental and field environments. Three primer pairs targeting the toxR gene of V. alginolyticus were designed, and amplification was carried out in an ESE tube scanner and Real-Time PCR device. We successfully identified 93 V. alginolyticus strains from a total of 105 different bacterial isolates and confirmed their identity by 16s rDNA sequencing. We also applied this method on infected mouse blood and contaminated scallop samples, and accurate results were both easily and rapidly (20–60 min) obtained. Therefore, the RT-LAMP assay we developed can be conveniently used to detect the presence of V. alginolyticus in different samples. Furthermore, this method will also fulfill the gap for real-time screening of V. alginolyticus infections especially while on field.
Collapse
Affiliation(s)
- Kaifei Fu
- Central Laboratory, Navy General Hospital Beijing, China
| | - Jun Li
- Medical Administrative Department, Navy General Hospital Beijing, China
| | - Yuxiao Wang
- Central Laboratory, Navy General Hospital Beijing, China
| | - Jianfei Liu
- Department of Biochemistry and Molecular Biology, Medical College, Qingdao University Qingdao, China
| | - He Yan
- College of Light Industry and Food Sciences, South China University of Technology Guangzhou, China
| | - Lei Shi
- Institute of Food Safety and Nutrition, Jinan University Guangzhou, China
| | - Lijun Zhou
- Central Laboratory, Navy General Hospital Beijing, China
| |
Collapse
|
4
|
Santos CALD, Vieira RHSF. BACTERIOLOGICAL HAZARDS AND RISKS ASSOCIATED WITH SEAFOOD CONSUMPTION IN BRAZIL. Rev Inst Med Trop Sao Paulo 2013. [DOI: 10.1590/s0036-46652013000400001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
SUMMARY The present study is a review of data available in Brazil on bacterial diseases transmitted through the consumption of seafood and related products. Data are presented regarding outbreaks and cases of disease and laboratory findings associated with pathogens in seafood and related products, and methods for prevention and control are described.
Collapse
|
5
|
Ramos RJ, Pereira MA, Miotto LA, Faria RD, Silveira Junior N, Vieira CRW. Ocurrence of Vibrio spp., positive coagulase staphylococci and enteric bacteria in oysters (Crassostrea gigas) harvested in the south bay of Santa Catarina island, Brazil. FOOD SCIENCE AND TECHNOLOGY 2012. [DOI: 10.1590/s0101-20612012005000061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to assess the contamination of oysters (Crassostrea gigas), harvested in six different regions of the South Bay of Santa Catarina Island, with Coliforms at 45 ºC, Escherichia coli, Vibrio spp., positive coagulase staphylococci, and Salmonella sp. over a period of one year. One hundred eighty oyster samples were collected directly from their culture sites and analyzed. Each sample consisted of a pool of 12 oysters. All of the samples analyzed showed absence of Salmonella, 18 (10%) samples showed presence of Escherichia coli, 15 (8.3%) samples were positive for V. alginolyticus, and Vibriocholerae was detected in 4 samples (2.2%). The counts of positive-coagulase staphylococci varied from <10 to 1.9 x 102 CFU.g-1, whereas the counts of Coliforms at 45 ºC and E. coli ranged from <3 to 1.5 x 102 MPN.g-1 and <3 and 4.3 x 10 MPN.g-1, respectively. Counts of V. parahaemolyticus and V. vulnificus ranged between <3 and 7 MPN.g-1, for both microorganisms. This suggests the need for monitoring these Vibrios contamination in oysters. Based on the results of the microbiological assays, the samples analyzed showed acceptable bacteriological quality, i.e., they were within the parameters established by Brazilian Legislation.
Collapse
|
6
|
Vieira RHSF, Costa RA, Menezes FGR, Silva GC, Theophilo GND, Rodrigues DP, Maggioni R. Kanagawa-Negative, tdh- and trh-Positive Vibrio parahaemolyticus Isolated from Fresh Oysters Marketed in Fortaleza, Brazil. Curr Microbiol 2011; 63:126-30. [DOI: 10.1007/s00284-011-9945-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Accepted: 04/22/2011] [Indexed: 11/25/2022]
|