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Pandey R, Sharma S, Sinha KK. Evidence of Antibiotic Resistance and Virulence Factors in Environmental Isolates of Vibrio Species. Antibiotics (Basel) 2023; 12:1062. [PMID: 37370381 DOI: 10.3390/antibiotics12061062] [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: 05/01/2023] [Revised: 06/03/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
The outbreak of waterborne diseases such as cholera and non-cholera (vibriosis) is continuously increasing in the environment due to fecal and sewage discharge in water sources. Cholera and vibriosis are caused by different species of Vibrio genus which are responsible for acute diarrheal disease and soft tissue damage. Although incidences of cholera and vibriosis have been reported from the Vaishali district of Bihar, India, clinical or environmental strains have not been characterized in this region. Out of fifty environmental water samples, twelve different biochemical test results confirmed the presence of twenty Vibrio isolates. The isolates were found to belong to five different Vibrio species, namely V. proteolyticus, V. campbellii, V. nereis, V. cincinnatiensis, and V. harveyi. From the identified isolates, 65% and 45% isolates were found to be resistant to ampicillin and cephalexin, respectively. Additionally, two isolates were found to be resistant against six and four separately selected antibiotics. Furthermore, virulent hlyA and ompW genes were detected by PCR in two different isolates. Additionally, phage induction was also noticed in two different isolates which carry lysogenic phage in their genome. Overall, the results reported the identification of five different Vibrio species in environmental water samples. The isolates showed multiple antibacterial resistance, phage induction, and virulence gene profile in their genome.
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Affiliation(s)
- Rajkishor Pandey
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur 844102, Bihar, India
- School of Medicine, University of Missouri, Columbia, MO 65211, USA
| | - Simran Sharma
- Department of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli, Sonipat 131028, Haryana, India
| | - Kislay Kumar Sinha
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur 844102, Bihar, India
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Jeamsripong S, Thaotumpitak V, Anuntawirun S, Roongrojmongkhon N, Atwill ER, Hinthong W. Molecular Epidemiology of Antimicrobial Resistance and Virulence Profiles of Escherichia coli, Salmonella spp., and Vibrio spp. Isolated from Coastal Seawater for Aquaculture. Antibiotics (Basel) 2022; 11:1688. [PMID: 36551345 PMCID: PMC9774326 DOI: 10.3390/antibiotics11121688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
Abstract
The occurrence of waterborne antimicrobial-resistant (AMR) bacteria in areas of high-density oyster cultivation is an ongoing environmental and public health threat given the popularity of shellfish consumption, water-related human recreation throughout coastal Thailand, and the geographical expansion of Thailand's shellfish industry. This study characterized the association of phenotypic and genotypic AMR, including extended-spectrum β-lactamase (ESBL) production, and virulence genes isolated from waterborne Escherichia coli (E. coli) (n = 84), Salmonella enterica (S. enterica) subsp. enterica (n = 12), Vibrio parahaemolyticus (V. parahaemolyticus) (n = 249), and Vibrio cholerae (V. cholerae) (n = 39) from Thailand's coastal aquaculture regions. All Salmonella (100.0%) and half of V. cholerae (51.3%) isolates harbored their unique virulence gene, invA and ompW, respectively. The majority of isolates of V. parahaemolyticus and E. coli, ~25% of S. enterica subsp. enterica, and ~12% of V. cholerae, exhibited phenotypic AMR to multiple antimicrobials, with 8.9% of all coastal water isolates exhibiting multidrug resistance (MDR). Taken together, we recommend that coastal water quality surveillance programs include monitoring for bacterial AMR for food safety and recreational water exposure to water for Thailand's coastal water resources.
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Affiliation(s)
- Saharuetai Jeamsripong
- Research Unit in Microbial Food Safety and Antimicrobial Resistance, Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Varangkana Thaotumpitak
- Research Unit in Microbial Food Safety and Antimicrobial Resistance, Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Saran Anuntawirun
- Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nawaphorn Roongrojmongkhon
- Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Edward R. Atwill
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA
| | - Woranich Hinthong
- Princess Srisavangavadhana College of Medicine, Chulabhorn Royal Academy, Bangkok 10210, Thailand
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Zhou Y, Gu S, Li J, Ji P, Zhang Y, Wu C, Jiang Q, Gao X, Zhang X. Complete Genome Analysis of Highly Pathogenic Non-O1/O139 Vibrio cholerae Isolated From Macrobrachium rosenbergii Reveals Pathogenicity and Antibiotic Resistance-Related Genes. Front Vet Sci 2022; 9:882885. [PMID: 35664858 PMCID: PMC9159153 DOI: 10.3389/fvets.2022.882885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/04/2022] [Indexed: 11/15/2022] Open
Abstract
Non-O1/O139 Vibrio cholerae is a highly virulent pathogen that causes mass mortalities of various aquatic animals. In the present study, we sequenced the whole genome of non-O1/O139 V. cholerae GXFL1-4, isolated from Macrobrachium rosenbergii, to reveal the pathogenicity and antibiotic resistance. The result showed its genome contained two circular chromosomes and one plasmid with a total size of 4,282,243 bp, which harbored 3,869 coding genes. Among them, 3,047, 2,659, and 3,661 genes were annotated in the Clusters of Orthologous Genes (COG), Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG), respectively. In addition, 372 potential virulence genes were predicted based on the Virulence Factor Database (VFDB) database, such as type II, III, IV, and VI secretion systems related genes, flagella genes, and pilus formation or motility-related genes. Blast results in the Comprehensive Antibiotic Resistance Database (CARD) database showed that the strain contained 148 antibiotic resistance-related genes belonging to 27 categories, such as efflux pump complex antibiotic resistance genes and antibiotic resistance gene cluster genes. The Pathogen-Host Interaction (PHI) database annotated 320 genes related to pathogen-host interaction, such as T3SS, virulence regulatory factors, transcriptional regulators, and two-component response regulator related genes. The whole-genome analysis suggested that the pathogenic non-O1/O139 V. cholerae strain GXFL1-4 might have a complex molecular mechanism of pathogenicity and antibiotic resistance. This study provides a wealth of information about non-O1/O139 V. cholerae genes related to its pathogenicity and drug resistance and will facilitate the understanding of its pathogenesis as well as the development of prevention and treatment strategies for the pathogen.
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Zhou A, Wang L, Zhang J, Yang X, Ou Z, Zhao L. Survival of viable but nonculturable Cronobacter sakazakii in macrophages contributes to infections. Microb Pathog 2021; 158:105064. [PMID: 34171399 DOI: 10.1016/j.micpath.2021.105064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/09/2021] [Accepted: 06/16/2021] [Indexed: 02/04/2023]
Abstract
Cronobacter sakazakii (C. sakazakii), a pathogen that exists in dry and low-moisture environments, such as powder infant formula (PIF), can enter a viable but nonculturable (VBNC) state under harsh conditions, which enables it to escape traditional detection methods and thus poses a potential public health risk. This study aimed at assessing the virulent nature of VBNC C. sakazakii. Our results showed that VBNC C. sakazakii induced intestinal inflammation in neonatal rats. However, the degree of inflammation was significantly lower than that of culturable bacteria due to decreasing endotoxin production, motility, adhesion, and invasion ability in the VBNC state. From the perspective of bacterial translocation, the numbers of C. sakazakii in the blood, liver, and spleen of rats treated with VBNC cells were in the same order of magnitude as those treated with its culturable counterpart and may lead to the same degree of bacteremia. According to the macrophage survival assays, the survival rate of VBNC C. sakazakii within macrophages was 4.7 times higher than that of culturable cells. Based on these findings, we hypothesize that VBNC C. sakazakii evaded the host immune defense system, penetrated the tissue barrier, and translocated to the bloodstream, liver, and spleen through macrophages. Thus, our study reveals that VBNC C. sakazakii could be a potential risk for infants' health.
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Affiliation(s)
- Aidi Zhou
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, PR China
| | - Li Wang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China.
| | - Jingfeng Zhang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, PR China
| | - Xiaoqing Yang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China
| | - Zhihua Ou
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China
| | - Lichao Zhao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Wu Shan Road 483, Guangzhou 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, PR China.
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Li Z, Zhang L, Sun L, Wang Y, Chen J, Tang H, Lin L, Lin X. Proteomics analysis reveals the importance of transcriptional regulator slyA in regulation of several physiological functions in Aeromonas hydrophila. J Proteomics 2021; 244:104275. [PMID: 34044167 DOI: 10.1016/j.jprot.2021.104275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 05/08/2021] [Accepted: 05/18/2021] [Indexed: 01/22/2023]
Abstract
SlyA is a well-known transcription factor that plays important roles in the regulation of diverse physiological functions including virulence and stress response in various bacterial species. The biological effects of slyA have species-specific characteristics. In this study, a phenotype assay showed that slyA gene deletion in Aeromonas hydrophila (ahslyA) decreased biofilm formation capability but did not affect bacterial hemolytic activity or acid stress response. The differentially expressed proteins between ΔahslyA and wild-type strains were compared by label-free quantitative proteomics to further understand the effects of AhSlyA on biological functions. Bioinformatics assays showed that ΔahslyA may be involved in the regulation of several intracellular metabolic pathways such as galactose metabolism, arginine biosynthesis, and sulfur metabolism. A further phenotypic assay confirmed that AhSlyA plays an important role in the regulation of sulfur and phosphate metabolism. Moreover, ahslyA also directly or indirectly regulated at least eight outer membrane proteins involved in the maintenance of cell permeability. Overall, the results provide insights into the functions of ahslyA and demonstrate its importance in A. hydrophila. BIOLOGICAL SIGNIFICANCE: In this study, we compared the DEPs between the transcriptional regulator slyA-deleted and the wild-type A. hydrophila strains using a label-free quantitative proteomics method. The bioinformatics analysis showed that slyA may be involved in the regulation of several metabolic pathways. Subsequent phenotype and growth assays confirmed that ΔahslyA affected sulfur and phosphate metabolism, and OM permeability. Finally, a ChIP-PCR assay further confirmed that AhSlyA directly binds to the promoters of several candidate genes, including sulfur metabolism-related genes. These results indicated that slyA plays an important regulatory role in pleiotropic physiological functions of A. hydrophila, and these functions may be different from those identified in previous reports from other bacterial species.
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Affiliation(s)
- Zhen Li
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Zhangzhou Health Vocational College, 363000 Zhangzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Lishan Zhang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Lina Sun
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Yuqian Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Jiazhen Chen
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Huamei Tang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Ling Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China.
| | - Xiangmin Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, PR China; Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China.
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de Souza JB, Almeida-Souza HO, Zaini PA, Alves MN, de Souza AG, Pierry PM, da Silva AM, Goulart LR, Dandekar AM, Nascimento R. Xylella fastidiosa subsp. pauca Strains Fb7 and 9a5c from Citrus Display Differential Behavior, Secretome, and Plant Virulence. Int J Mol Sci 2020; 21:E6769. [PMID: 32942709 PMCID: PMC7555403 DOI: 10.3390/ijms21186769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/12/2020] [Accepted: 09/13/2020] [Indexed: 12/20/2022] Open
Abstract
Xylella fastidiosa colonizes the xylem of various cultivated and native plants worldwide. Citrus production in Brazil has been seriously affected, and major commercial varieties remain susceptible to Citrus Variegated Chlorosis (CVC). Collective cellular behaviors such as biofilm formation influence virulence and insect transmission of X. fastidiosa. The reference strain 9a5c produces a robust biofilm compared to Fb7 that remains mostly planktonic, and both were isolated from symptomatic citrus trees. This work deepens our understanding of these distinct behaviors at the molecular level, by comparing the cellular and secreted proteomes of these two CVC strains. Out of 1017 identified proteins, 128 showed differential abundance between the two strains. Different protein families were represented such as proteases, hemolysin-like proteins, and lipase/esterases, among others. Here we show that the lipase/esterase LesA is among the most abundant secreted proteins of CVC strains as well, and demonstrate its functionality by complementary activity assays. More severe symptoms were observed in Nicotiana tabacum inoculated with strain Fb7 compared to 9a5c. Our results support that systemic symptom development can be accelerated by strains that invest less in biofilm formation and more in plant colonization. This has potential application in modulating the bacterial-plant interaction and reducing disease severity.
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Affiliation(s)
- Jessica Brito de Souza
- Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas, Bloco 2E, Campus Umuarama, Uberlandia MG 38400-902, Brazil; (J.B.d.S.); (H.O.A.-S.); (A.G.d.S.); (L.R.G.); (R.N.)
| | - Hebréia Oliveira Almeida-Souza
- Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas, Bloco 2E, Campus Umuarama, Uberlandia MG 38400-902, Brazil; (J.B.d.S.); (H.O.A.-S.); (A.G.d.S.); (L.R.G.); (R.N.)
| | - Paulo Adriano Zaini
- Department of Plant Sciences, College of Agriculture and Environmental Sciences, University of California, Davis, 1 Shields Ave, Davis, CA 95616, USA;
| | - Mônica Neli Alves
- Department of Technology, School of Agricultural and Veterinary Studies, São Paulo State University (FCAV/UNESP), Via de Acesso Prof. Paulo Donato Castellane, Jaboticabal SP 14884-900, Brazil;
- Citriculture Defense Fund (Fundecitrus), Av. Dr. Adhemar Pereira de Barros 201, Araraquara SP 14807-040, Brazil
| | - Aline Gomes de Souza
- Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas, Bloco 2E, Campus Umuarama, Uberlandia MG 38400-902, Brazil; (J.B.d.S.); (H.O.A.-S.); (A.G.d.S.); (L.R.G.); (R.N.)
| | - Paulo Marques Pierry
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo SP 05508-000, Brazil; (P.M.P.); (A.M.d.S.)
| | - Aline Maria da Silva
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo SP 05508-000, Brazil; (P.M.P.); (A.M.d.S.)
| | - Luiz Ricardo Goulart
- Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas, Bloco 2E, Campus Umuarama, Uberlandia MG 38400-902, Brazil; (J.B.d.S.); (H.O.A.-S.); (A.G.d.S.); (L.R.G.); (R.N.)
| | - Abhaya M. Dandekar
- Department of Plant Sciences, College of Agriculture and Environmental Sciences, University of California, Davis, 1 Shields Ave, Davis, CA 95616, USA;
| | - Rafael Nascimento
- Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas, Bloco 2E, Campus Umuarama, Uberlandia MG 38400-902, Brazil; (J.B.d.S.); (H.O.A.-S.); (A.G.d.S.); (L.R.G.); (R.N.)
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Zhang P, Ye Z, Ye C, Zou H, Gao Z, Pan J. OmpW is positively regulated by iron via Fur, and negatively regulated by SoxS contribution to oxidative stress resistance in Escherichia coli. Microb Pathog 2019; 138:103808. [PMID: 31634530 DOI: 10.1016/j.micpath.2019.103808] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/04/2019] [Accepted: 10/16/2019] [Indexed: 10/25/2022]
Abstract
Iron plays a central role at the interface of pathogen and host. The ability to sequester iron from a host not only reduces host immune defenses but also promotes pathogen virulence, leading to the occurrence of infectious disease. Recently, outer membrane protein OmpW was shown to protect bacteria against harsh environmental conditions and to play a role in infectious disease. The expression of this versatile protein is controlled by iron, but the underlying mechanism of iron regulation has not been elucidated. In this study, the relation between OmpW expression and iron was investigated. Our results demonstrated that expression of OmpW is responsive to iron. Iron uptake analysis showed that an ompW mutant strain has a strong requirement for iron as compared to wild type and the ompW complemented strain. Moreover, ferric uptake regulation protein Fur, an iron binding transcriptional factor, was downregulated under iron limitation conditions and had a similar expression profile to OmpW in the presence or absence of iron. Based on these results, we suggest that iron regulates OmpW by binding to Fur. Furthermore, SoxS, a transcriptional factor involved in oxidative stress, was found to negatively regulate OmpW. We found that downregulating or knocking out OmpW results in bacterial resistance to oxidative stress. These findings provide new insight into the regulation of OmpW expression by iron, and may represent a new mechanism contributing to iron-mediated infectious disease.
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Affiliation(s)
- Pengfei Zhang
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zhicang Ye
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Chen Ye
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Haijie Zou
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zhichao Gao
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Jianyi Pan
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, School of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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Gao X, Miao Z, Li X, Chen N, Gu W, Liu X, Yang H, Wei W, Zhang X. Pathogenicity of non-O1/ O139 Vibrio cholerae and its induced immune response in Macrobrachium rosenbergii. FISH & SHELLFISH IMMUNOLOGY 2019; 92:300-307. [PMID: 31202968 DOI: 10.1016/j.fsi.2019.06.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/10/2019] [Accepted: 06/12/2019] [Indexed: 06/09/2023]
Abstract
Outbreaks of mass mortalities occurred in Macrobrachium rosenbergii farms in Gaoyou county, Jiangsu Province of China. The bacterial isolates from M. rosenbergii exhibited the same phenotypic traits and biochemical characteristics, and were identified as non-O1/O139 Vibrio cholerae according to biochemical characteristics and molecular identification. In challenge test, M. rosenbergii infected with non-O1/O139 V. cholerae GXFL1-4 developed similar pathological signs to the naturally diseased prawns, and LD50 of the strain to M. rosenbergii was 4.5 × 106 CFU/mL at 96 h post-infection. Histopathological analysis revealed that hepatopancreas and intestines of diseased M. rosenbergii exhibited obvious inflammatory responses to non-O1/O139 V. cholerae infection. Detection virulence factors of the strain GXFL1-4 showed that the bacteria produced caseinase, lipase, amylase, lecithinase and hemolysin, and carried toxR, hlyA, ompW, ompU, hap, rtxA and rtxC virulence related genes, supporting the strong virulence to M. rosenbergii. Additionally, the immune related gene expression in M. rosenbergii evaluated by qRT-PCR analysis showed that HSP70, Crustin, Lysozyme, TRL1, ALF1, Lectin, Peroxinectin, proPO and SOD immune related genes were significantly up-regulated at 6 and 12 h after infection with GXFL1-4. The results of our study suggested that non-O1/O139 V. cholerae was an etiological element in the mass mortalities of M. rosenbergii and this study provided preliminary insights into the diversity in the immune response of M. rosenbergii to the bacterial invasion.
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Affiliation(s)
- Xiaojian Gao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Zhen Miao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xixi Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Nan Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Wenwen Gu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xiaodan Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Hui Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Wanhong Wei
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xiaojun Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
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Detection of Cholera Toxin-Producing Vibrio cholerae in Phytoplankton from Santubong and Samariang Estuaries. BORNEO JOURNAL OF RESOURCE SCIENCE AND TECHNOLOGY 2019. [DOI: 10.33736/bjrst.1584.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Many cholera outbreaks worldwide were associated with cholera toxin-producing Vibrio cholerae. The bacteria are ubiquitous in aquatic environment, whilst phytoplankton is associated with adaptation of the Vibrio species. This study was conducted to detect cholera toxin-producing Vibrio cholerae, and to determine association of the selected water physicochemical parameters with the number of the bacteria. In this study, a total of ten phytoplankton samples were collected at Santubong and Samariang Estuaries in Kuching, Sarawak. Water physicochemical parameters (temperature, pH and salinity) were recorded. Vibrio bacteria were cultivated on thiosulfate citrate bile-salts sucrose selective agar and analysed for cholera toxin-producing Vibrio cholerae using polymerase chain reaction by targeting ctxA gene that encodes for virulence cholera enterotoxin subunit A. The result revealed that a range of 1.0 × 107 – 8.0 × 107 CFU/ml of yellow colonies growing on the thiosulfate citrate bile-salts sucrose agars. Inversely, no samples were positive with cholera toxin-producing Vibrio cholerae. The physicochemical parameters at Samariang Estuary were more associated with the number of bacteria in the samples compared to Santubong Estuary.
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Cardoso MD, Lemos LS, Roges EM, de Moura JF, Tavares DC, Matias CAR, Rodrigues DP, Siciliano S. A comprehensive survey of Aeromonas sp. and Vibrio sp. in seabirds from southeastern Brazil: outcomes for public health. J Appl Microbiol 2018; 124:1283-1293. [PMID: 29356247 DOI: 10.1111/jam.13705] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/22/2017] [Accepted: 01/14/2018] [Indexed: 12/15/2022]
Abstract
AIMS To perform a microbiological survey regarding the presence, prevalence and characterization of Aeromonas sp. and Vibrio sp. in debilitated wrecked marine birds recovered from the centre-north coast of the state of Rio de Janeiro, Brazil. METHODS AND RESULTS Swabs obtained from 116 alive and debilitated wrecked marine birds, comprising 19 species, from the study area were evaluated by biochemical methods. Antimicrobial susceptibility tests and pathogenicity gene screening were performed for bacterial strains of public health importance. Vibrio sp. and Aeromonas sp. were identified, as well as certain pathogenic genes and resistance to selected antimicrobials. CONCLUSIONS This study demonstrates that the identified bacteria, mainly Vibrio sp., are fairly prevalent and widespread among several species of seabirds and highlights the importance of migratory birds in bacterial dispersion. In addition, it demonstrates the importance of the bacterial strains regarding their pathogenic potential. Therefore, seabirds can act as bacterial reservoirs, and their monitoring is of the utmost importance in a public health context. SIGNIFICANCE AND IMPACT OF THE STUDY The study comprehensively evaluates the importance of seabirds as bacteria of public health importance reservoirs, since birds comprising several pathogenic bacterial species were evaluated.
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Affiliation(s)
- M D Cardoso
- Programa de Pós-Graduação em Saúde Pública e Meio Ambiente, Escola Nacional de Saúde Pública Sérgio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - L S Lemos
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.,Geospatial Ecology of Marine Megafauna Laboratory, Hatfield Marine Science Center, Newport, OR, USA
| | - E M Roges
- Laboratório de Referência Nacional de Enteroinfecções Bacterianas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - J F de Moura
- Systems Ecology, Leibniz Centre for Tropical Marine Research-ZMT, Bremen, Germany
| | - D C Tavares
- Programa de Pós-graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ, Brazil
| | - C A R Matias
- Departamento de Epidemiologia e Saúde Pública, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - D P Rodrigues
- Laboratório de Referência Nacional de Enteroinfecções Bacterianas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - S Siciliano
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
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11
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Ye Y, Zhang X, Zhang M, Ling N, Zeng H, Gao J, Jiao R, Wu Q, Zhang J. Potential factors involved in virulence of Cronobacter sakazakii isolates by comparative transcriptome analysis. J Dairy Sci 2017; 100:8826-8837. [PMID: 28888603 DOI: 10.3168/jds.2017-12801] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 07/11/2017] [Indexed: 01/15/2023]
Abstract
Cronobacter species are important foodborne pathogens causing severe infections in neonates through consumption of contaminated powdered infant formula. However, the virulence-associated factors in Cronobacter are largely unknown. In this study, the transcriptome analysis between highly virulent Cronobacter sakazakii G362 and attenuated L3101 strains was used to reveal the potential factors involved in virulence. The total transcripts were grouped into 20 clusters of orthologous group categories and summarized in 3 gene ontology categories (biological process, cellular component, and molecular function). In addition, the differentially expressed genes (DEG) between these isolates were analyzed using Volcano plots and gene ontology enrichment. The predominant DEG were flagella-associated genes such as flhD, motA, flgM, flgB, and fliC. Furthermore, the expression abundance of outer membrane protein or lipoprotein genes (ompW, slyB, blc, tolC, and lolA), potential virulence-related factors (hlyIII and hha), and regulation factors (sdiA, cheY, Bss, fliZ) was also significantly different between G362 and L3101. Interestingly, 3 hypothetical protein genes (ESA_01022, ESA_01609, and ESA_00609) were found to be expressed only in G362. Our findings provide valuable transcriptomic information about potential virulence factor genes, which will be needed in future molecular biology studies designed to understand the pathogenic mechanism of Cronobacter.
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Affiliation(s)
- Yingwang Ye
- School of Food Science and Technology, Hefei University of Technology, Hefei, 230009, China; State Key Laboratory of Applied Microbiology, South China (the Ministry-Province Joint Development), Provincial Key Laboratory of Microbiology Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China.
| | - Xiyan Zhang
- School of Food Science and Technology, Hefei University of Technology, Hefei, 230009, China
| | - Maofeng Zhang
- School of Food Science and Technology, Hefei University of Technology, Hefei, 230009, China
| | - Na Ling
- State Key Laboratory of Applied Microbiology, South China (the Ministry-Province Joint Development), Provincial Key Laboratory of Microbiology Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China
| | - Haiyan Zeng
- State Key Laboratory of Applied Microbiology, South China (the Ministry-Province Joint Development), Provincial Key Laboratory of Microbiology Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China
| | - Jina Gao
- School of Food Science and Technology, Hefei University of Technology, Hefei, 230009, China
| | - Rui Jiao
- School of Food Science and Technology, Hefei University of Technology, Hefei, 230009, China
| | - Qingping Wu
- State Key Laboratory of Applied Microbiology, South China (the Ministry-Province Joint Development), Provincial Key Laboratory of Microbiology Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China
| | - Jumei Zhang
- State Key Laboratory of Applied Microbiology, South China (the Ministry-Province Joint Development), Provincial Key Laboratory of Microbiology Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China
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12
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Manafi A, Khodabandehloo M, Rouhi S, Ramazanzadeh R, Shahbazi B, Narenji H. Molecular Epidemiology Survey of Staphylococcus aureus Panton-Valentine Leukocidin-positive Isolated from Sanandaj, Iran. Adv Biomed Res 2017; 6:87. [PMID: 28828338 PMCID: PMC5549542 DOI: 10.4103/abr.abr_243_15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Background: Staphylococcus aureus strains that are Panton–Valentine leukocidin (PVL) positive cause severe skin and soft tissue infections as well as necrotizing pneumonia. The presence of PVL gene is a marker for methicillin-resistant S. aureus; therefore, survey on prevalence and phylogenetic distribution of PVL is of great importance for public health. The aim of this research was molecular epidemiology survey of S. aureus PVL positive, isolated from two tertiary hospitals of Sanandaj. Materials and Methods: A total of 264 staphylococci isolates were collected from clinical specimens, hospital personnel and hospital environment of two tertiary hospitals of Sanandaj, in 2012 (Toohid and Besat). Bacterial cultures and biochemical tests were performed for S. aureus detection. Then, polymerase chain reaction (PCR) and repetitive sequence-based PCR (rep-PCR) were used for the determination of prevalence and molecular epidemiology of S. aureus PVL, respectively. Data were analyzed using the Fisher's exact test (P < 0.05). Results: From 264 staphylococci isolates, 88 (33.33%) were detected as S. aureus. Furthermore, 20 out of 88 (22.72%) strains of S. aureus were PVL positive according to PCR results. Rep-PCR showed six main clusters of S. aureus samples. PVL had similar clonality between different samples. No significant relationship was observed between PVL positive S. aureus and rep-PCR patterns (P = 0.98). Conclusion: These results showed that a clone of S. aureus PVL positive has spread between the community and hospital settings. Therefore, appropriate measures are required to prevent the spread of staphylococci and other bacteria in hospitals.
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Affiliation(s)
- Abbas Manafi
- Form the Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mazaher Khodabandehloo
- Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Samaneh Rouhi
- Form the Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Rashid Ramazanzadeh
- Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Babak Shahbazi
- Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hanar Narenji
- Department of Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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13
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Ramazanzadeh R, Rouhi S, Shakib P, Shahbazi B, Bidarpour F, Karimi M. Molecular Characterization of Vibrio cholerae Isolated From Clinical Samples in Kurdistan Province, Iran. Jundishapur J Microbiol 2015; 8:e18119. [PMID: 26060565 PMCID: PMC4458358 DOI: 10.5812/jjm.8(5)2015.18119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 04/12/2014] [Accepted: 04/23/2014] [Indexed: 11/16/2022] Open
Abstract
Background: Vibrio cholerae causes diarrhoeal disease that afflicts thousands of people annually. V. cholerae is classified on the basis of somatic antigens into serovars or serogroups and there are at least 200 known serogroup. Two serogroups, O1 and O139 have been associated with epidemic diseases. Virulence genes of these bacteria are OmpW, ctxA and tcpA. Objectives: Due to the importance of V. cholerae infection and developing molecular diagnostics of this organism in medical and microbiology sciences, this study aimed to describe molecular characterization of V. cholerae isolated from clinical samples using a molecular method. Materials and Methods: In this study, 48 samples were provided during summer 2013 (late August and early September) by reference laboratory. Samples were assessed using biochemical tests initially. The primer of OmpW, ctxA and tcpA genes was used in Polymerase Chain Reaction (PCR) protocols. Enterobacterial Repetitive Intergenic Consensus (ERIC)-PCR and Repetitive Extragenic Palindromic (REP)-PCR methods were used to subtype V. cholerae. Results: In this study, from a total of 48 clinical stool samples 39 (81.2 %) were positive for V. cholerae in biochemical tests and bacteria culture tests. The PCR results showed that of 39 positive isolates 35 (89.7%), 34 (87.1%) and 37 (94.8%) were positive for ctxA, tcpA and OmpW gene, respectively. Also, in the REP-PCR method with ERIC primer strains were divided into 10 groups. In the REP-PCR method with REP primer, strains were divided into 13 groups. Conclusions: Polymerase chain reaction has specificity and accuracy for identification of the organism and is able to differentiate biotypes. Enterobacterial repetitive intergenic consensus sequence is one of the informative and discriminative methods for the analysis of V. cholerae diversity. The REP-PCR is a less informative and discriminative method compared to other methods for the analysis of V. cholerae diversity.
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Affiliation(s)
- Rashid Ramazanzadeh
- Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
- Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
| | - Samaneh Rouhi
- Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
| | - Pegah Shakib
- Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
| | - Babak Shahbazi
- Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
- Corresponding author: Babak Shahbazi, Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, IR Iran. Tel: +98-9353929575, E-mail:
| | - Farzam Bidarpour
- Deputy of Public Health Affairs, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
| | - Mohammad Karimi
- Deputy of Public Health Affairs, Kurdistan University of Medical Sciences, Sanandaj, IR Iran
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14
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Samadi N, Pakzad I, Monadi Sefidan A, Hosainzadegan H, Tanomand A. Study of aminoglycoside resistance genes in enterococcus and salmonella strains isolated from ilam and milad hospitals, iran. Jundishapur J Microbiol 2015; 8:e18102. [PMID: 26034551 PMCID: PMC4449854 DOI: 10.5812/jjm.8(4)2015.18102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 04/26/2014] [Accepted: 05/11/2014] [Indexed: 01/07/2023] Open
Abstract
Background: Aminoglycosides are a group of antibiotics that have been widely used in the treatment of life-threatening infections of Gram-negative bacteria. Objectives: This study aimed to evaluate the frequency of aminoglycoside resistance genes in Enterococcus and Salmonella strains isolated from clinical samples by PCR. Materials and Methods: In this study, 140 and 79 isolates of Enterococcus and Salmonella were collected, respectively. After phenotypic biochemical confirmation, 117 and 77 isolates were identified as Enterococcus and Salmonella, respectively. After the biochemical identification of the isolates, antibiotic susceptibility for screening of resistance was done using the Kirby-Bauer method for gentamicin, amikacin, kanamycin, tobramycin and netilmycin. DNA was extracted from resistant strains and the presence of acc (3)-Ia, aac (3′)-Ib, acc (6)-IIa ,16SrRNA methylase genes (armA and rat) was detected by PCR amplification using special primers and positive controls. Results: Enterococcus isolates have the highest prevalence of resistance to both kanamycin and amikacin (68.4%), and Salmonella isolates have the highest prevalence of resistance against kanamycin (6.9%). Ninety-three and 26 isolates of Enterococcus and Salmonella at least were resistant against one of the aminoglycosides, respectively. Moreover, 72.04%, 66.7%, and 36.6% of the resistant strains of Enterococcus had the aac (3′)-Ia, aac (3′)-IIa, and acc (6′)-Ib genes, respectively. None of the Salmonella isolates have the studied aminoglycoside genes. Conclusions: Our results indicate that acetylation genes have an important role in aminoglycoside resistance of the Enterococcus isolates from clinical samples. Moreover, Salmonella strains indicate very low level of aminoglycoside resistance, and aminoglycoside resistance genes were not found in Salmonella isolates. These results indicate that other resistance mechanisms, including efflux pumps have an important role in aminoglycoside resistance of Salmonella.
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Affiliation(s)
- Nasser Samadi
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, IR Iran
| | - Iraj Pakzad
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, IR Iran
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, IR Iran
| | | | - Hasan Hosainzadegan
- Department of Basic Sciences, Faculty Of Medicine, Maragheh University of Medical Science, Maragheh , IR Iran
- Corresponding author: Hasan Hosainzadegan, Department of Basic Sciences, Faculty Of Medicine, Maragheh University of Medical Science, Maragheh , IR Iran. Tel: +98-4137276364, Fax: +98-4137276363, E-mail:
| | - Asghar Tanomand
- Department of Basic Sciences, Faculty Of Medicine, Maragheh University of Medical Science, Maragheh , IR Iran
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15
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Menezes FGRD, Neves SDS, Sousa OVD, Vila-Nova CMVM, Maggioni R, Theophilo GND, Hofer E, Vieira RHSDF. Detection of virulence genes in environmental strains of Vibrio cholerae from estuaries in northeastern Brazil. Rev Inst Med Trop Sao Paulo 2015; 56:427-32. [PMID: 25229224 PMCID: PMC4172115 DOI: 10.1590/s0036-46652014000500010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 02/25/2014] [Indexed: 11/21/2022] Open
Abstract
The objectives of this study were to detect the presence of
Vibrio cholerae in tropical estuaries (Northeastern
Brazil) and to search for virulence factors in the environmental isolates.
Water and sediment samples were inoculated onto a vibrio-selective medium
(TCBS), and colonies with morphological resemblance to V.
cholerae were isolated. The cultures were identified phenotypically
using a dichotomous key based on biochemical characteristics. The total DNA
extracted was amplified by PCR to detect ompW and by multiplex
PCR to detect the virulence genes ctx, tcp,
zot and rfbO1. The results of the
phenotypic and genotypic identification were compared. Nine strains of
V. cholerae were identified phenotypically, five of which
were confirmed by detection of the species-specific gene ompW.
The dichotomous key was efficient at differentiating environmental strains of
V. cholerae. Strains of V. cholerae were
found in all four estuaries, but none possessed virulence genes.
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Affiliation(s)
| | - Soraya da Silva Neves
- Federal University of Ceará, Department of Fisheries Engineering, Campus Universitário do Pici, UFC, Fortaleza, Ceará, Brazil
| | | | | | - Rodrigo Maggioni
- Marine Sciences Institute (LABOMAR), Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Ernesto Hofer
- The Oswaldo Cruz Institute (FIOCRUZ), Rio de Janeiro, RJ, Brazil
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16
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Khemthongcharoen N, Wonglumsom W, Suppat A, Jaruwongrungsee K, Tuantranont A, Promptmas C. Piezoresistive microcantilever-based DNA sensor for sensitive detection of pathogenic Vibrio cholerae O1 in food sample. Biosens Bioelectron 2015; 63:347-353. [DOI: 10.1016/j.bios.2014.07.068] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/13/2014] [Accepted: 07/24/2014] [Indexed: 10/25/2022]
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17
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Garrido-Maestu A, Chapela MJ, Peñaranda E, Vieites JM, Cabado AG. In-house validation of novel multiplex real-time PCR gene combination for the simultaneous detection of the main human pathogenic vibrios (Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus). Food Control 2014. [DOI: 10.1016/j.foodcont.2013.09.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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18
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Imani FAA, Iman ID, Hosseini DR, Karami A, Marashi SM. Design of a multiplex PCR method for detection of toxigenic-pathogenic in Vibrio cholerae. ASIAN PAC J TROP MED 2013; 6:115-8. [PMID: 23339912 DOI: 10.1016/s1995-7645(13)60005-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/15/2012] [Accepted: 12/15/2012] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVE To study virulence and regulatory genes (hlyA, ctxB, tcpI) in clinical strains of Vibrio cholerae (V. cholerae), simultaneously. METHODS Three important genes, tcpI, hlyA and ctxB were used for detection of toxigenic and pathogenic V. cholera by chain reaction assay method. RESULTS According to the results of the PCR, the incidence of hlyA, tcpI, and ctxB genes in clinical isolates was obtained as 94.7% (72 sample), 90.8% (69 sample), and 92.1% (70 sample), respectively. Five strains possessed all genes except ctxB, six strains possessed all genes except tcpI, four strains possessed all genes except hlyA, one strain possessed only hlyA and 60 strains contained a combination of three genes, Including hlyA, ctxB and tcpI. CONCLUSIONS Result show that this method could be reliable to detect toxigenic-pathogenic strains of V. cholerae in Iran.
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Affiliation(s)
- Fooladi A A Imani
- Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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19
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Talkington D, Bopp C, Tarr C, Parsons MB, Dahourou G, Freeman M, Joyce K, Turnsek M, Garrett N, Humphrys M, Gomez G, Stroika S, Boncy J, Ochieng B, Oundo J, Klena J, Smith A, Keddy K, Gerner-Smidt P. Characterization of toxigenic Vibrio cholerae from Haiti, 2010-2011. Emerg Infect Dis 2012; 17:2122-9. [PMID: 22099116 PMCID: PMC3310580 DOI: 10.3201/eid1711.110805] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In October 2010, the US Centers for Disease Control and Prevention received reports of cases of severe watery diarrhea in Haiti. The cause was confirmed to be toxigenic Vibrio cholerae, serogroup O1, serotype Ogawa, biotype El Tor. We characterized 122 isolates from Haiti and compared them with isolates from other countries. Antimicrobial drug susceptibility was tested by disk diffusion and broth microdilution. Analyses included identification of rstR and VC2346 genes, sequencing of ctxAB and tcpA genes, and pulsed-field gel electrophoresis with SfiI and NotI enzymes. All isolates were susceptible to doxycycline and azithromycin. One pulsed-field gel electrophoresis pattern predominated, and ctxB sequence of all isolates matched the B-7 allele. We identified the tcpETCIRS allele, which is also present in Bangladesh strain CIRS 101. These data show that the isolates from Haiti are clonally and genetically similar to isolates originating in Africa and southern Asia and that ctxB-7 and tcpET(CIRS) alleles are undergoing global dissemination.
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Affiliation(s)
- Deborah Talkington
- Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
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20
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Raz N, Danin-Poleg Y, Broza YY, Arakawa E, Ramakrishna BS, Broza M, Kashi Y. Environmental monitoring of Vibrio cholerae using chironomids in India. ENVIRONMENTAL MICROBIOLOGY REPORTS 2010; 2:96-103. [PMID: 23766003 DOI: 10.1111/j.1758-2229.2009.00109.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Environmental Vibrio cholerae strains belonging to the non-O1/non-O139 serogroups are natural inhabitants of freshwater including estuarine environments. Recent findings indicated that chironomids (Diptera: Chironomidae), the most widely distributed insects in freshwater, serve as a natural reservoir of these bacteria. Here we study the role of chironomids, particularly exuviae as carriers and as a monitoring tool for the distribution of V. cholerae in the environment. During a survey conducted in India (June 2006), 326 V. cholerae non-O1/non-O139 isolates were isolated from chironomid egg masses, larvae and exuviae. In addition, a heat-stable enterotoxin (nag-st) positive strain was isolated from exuviae during the local cholera outbreak. We identified 62 different strains in a subset of 102 isolates by analysis of variable number of tandem repeats (VNTR), demonstrating a high variation of V. cholerae on hosting chironomids. Our results show that chironomids can both maintain and distribute this overwhelming diversity of environmental V. cholerae strains, including toxigenic ones. Exuviae proved to be an efficient tool for the monitoring of environmental V. cholerae, offering simple, direct and practical access for on-shore collection. Finally, finding toxigenic V. cholerae on chironomids in endemic areas, together with molecular typing, may potentially improve monitoring of cholera in the future.
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Affiliation(s)
- Nili Raz
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, Israel. Division of Bacteriology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan. Department of Gastrointestinal Sciences, Christian Medical College, Vellore, India. Department of Biology, Faculty of Science and Science Education, University of Haifa, Oranim, Tivon 36006, Israel
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21
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Identification of vibriocidal compounds from medicinal plants using chromatographic fingerprinting. World J Microbiol Biotechnol 2008. [DOI: 10.1007/s11274-008-9855-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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