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1.
Electron J Biotechnol ; 49: 22-28, Jan. 2021. ilus, graf, tab
Article in English | LILACS | ID: biblio-1291938

ABSTRACT

BACKGROUND: Vibrio species display variable and plastic fitness strategies to survive and interact with multiple hosts, including marine aquaculture species that are severely affected by pathogenic Vibrios. The culturable Vibrio sp. strain ArtGut-C1, the focus of this study, provides new evidence of such phenotypic plasticity as it accumulates polyhydroxybutyrate (PHB), a biodegradable polymer with anti-pathogen activity, particularly in the marine larviculture phase. The strain was isolated from the gut of laboratory-reared Artemia individuals, the live diet and PHB carrier used in larviculture. Its main phenotypic properties, taxonomic status and genomic properties are reported based on the whole-genome sequencing. RESULTS: Vibrio sp. ArtGut-C1 yielded 72.6% PHB of cells' dry weight at 25 C. The genomic average nucleotide identity (ANI) shows it is closely related to V. diabolicus (ANI: 88.6%). Its genome contains 5,236,997- bp with 44.8% GC content, 3,710 protein-coding sequences, 96 RNA, 9 PHB genes functionally related to PHB metabolic pathways, and several genes linked to competing and colonizing abilities. CONCLUSIONS: This culturable PHB-accumulating Vibrio strain shows high genomic and phenotypic variability. It may be used as a natural pathogen biocontrol in the marine hatchery and as a potential cell factory for PHB production.


Subject(s)
Animals , Artemia/microbiology , Vibrio/metabolism , Polyhydroxyalkanoates/metabolism , Hydroxybutyrates/metabolism , Genetic Variation , Vibrio/isolation & purification , Vibrio/classification , Aquaculture , Probiotics , Crustacea/microbiology , Gastrointestinal Microbiome , Biological Variation, Population
2.
Chinese Journal of Biotechnology ; (12): 3323-3333, 2021.
Article in Chinese | WPRIM | ID: wpr-921428

ABSTRACT

Vibrio splendidus is an opportunistic pathogen in aquaculture. It can infect a variety of aquaculture animals and has caused huge losses to the aquaculture industry. In this study, a novel and efficient method for detecting V. splendidus was developed by combining the exonuclease Ⅲ amplification strategy with a nucleic acid test strip developed based on gold nanoparticles-labeled DNA probe. The results could be directly visualized by naked eyes, and this system overcame the difficulty in preparation of the monoclonal antibody used in conventional immunostrip. Upon optimization of experimental conditions, the detection limit of the strip was 5 ng/mL for the synthetic oligonucleotide DNA fragment and 10 ng/mL for the actual genomic DNA sample of V. splendidus. This test strip was more sensitive compared with the PCR method and was specific for the detection of V. splendidus. The rapid preparation of nucleic acid strip and the efficient detection of V. splendidus open a new way for the prevention and control of aquatic diseases.


Subject(s)
Animals , DNA Probes , Gold , Metal Nanoparticles , Vibrio/genetics
3.
Rev. colomb. cardiol ; 27(5): 434-445, sep.-oct. 2020. tab, graf
Article in Spanish | LILACS, COLNAL | ID: biblio-1289254

ABSTRACT

Resumen Objetivo: describir las características epidemiológicas, clínicas y microbiológicas de los pacientes que cursan con miocarditis por Enterobacterias. Métodos: se realizó una revisión sistemática de la literatura, en la que se incluyeron Pubmed, Ovid, Scopus, SciELO y LILACS sin exclusión por tipo de idioma. La población objetivo de estudio fueron los pacientes con diagnóstico de infección bacteriana por bacilo gram negativo mediante cultivo, técnicas moleculares o histopatología, y quienes presentaban biopsia de miocardio o, en su defecto, resonancia magnética cardiaca con hallazgos sugestivos de miocarditis. Resultados: se encontraron 742 artículos, de los cuales se incluyeron 24; en estos se reportaron 27 pacientes. La edad promedio fue de 31 años. El 81% de los pacientes eran de sexo masculino. El síntoma principal fue diarrea (80%), seguido de fiebre (53%) y dolor torácico (38%). El 37% de los pacientes fallecieron. El hallazgo más común en el electrocardiograma fue la elevación del segmento ST (36,7%). En quienes se realizó ecocardiograma se encontraron anormalidades en 50% de los casos, siendo más frecuente la disminución en la fracción de eyección. El microorganismo más común fue el Campylobacter jejuni, seguido por Salmonela sp. Conclusiones: la miocarditis causada por enterobacterias es más frecuente en pacientes adultos jóvenes de sexo masculino. Los síntomas gastrointestinales suelen estar presentes al momento de la presentación clínica. El diagnóstico requiere de alta sospecha clínica teniendo en cuenta que las anormalidades eléctricas y en ecocardiograma no se encuentran en todos los pacientes.


Abstract Objective: To describe the epidemiological, clinical, and microbiological characteristics of patients with myocarditis due to Enterobacteria. Methods: A systematic review was carried out on the literature, which included Pubmed, Ovid, Scopus, SciELO, and LILACS, with no exclusions due to language. The target population of the study were patients with a diagnosis of bacterial infection due to gram negative bacillus by means of a culture, or using molecular or histopathology technique. They also had to have had a myocardial biopsy or, if not, a cardiac magnetic resonance scan with findings suggestive of myocarditis. Results: Out of a total of 742 articles found, 24 of these, in which 27 patients were described, were included. The mean age was 31 years, and 81% were male. The main symptom was diarrhoea (80%), followed by fever (53%), and chest pain (38%). More than one-third (37%) of the patients died. The most common finding on the electrocardiogram (ECG) was elevation of the ST segment (36.7%). Abnormalities were found in 50% of the cases, on whom a cardiac ultrasound was performed, with a decrease in the ejection fraction being the most common. The most common microorganism was Campylobacter jejuni, followed by Salmonella spp. Conclusions: Myocarditis caused by enterobacteria is most common in young male patients. The gastrointestinal symptoms are usually present from the clinical onset. The diagnosis requires a high clinical suspicion, taking into account that the abnormalities in the ECG and cardiac ultrasound are not found in all patients.


Subject(s)
Humans , Male , Adult , Salmonella , Shigella , Enterobacteriaceae , Myocarditis , Vibrio , Yersinia , Campylobacter , Clostridium
4.
Santa Tecla, La Libertad; ITCA Editores; ene. 2020. 66 p. ^c28 cm.tab., graf..
Monography in Spanish | LILACS, BISSAL | ID: biblio-1222759

ABSTRACT

Este estudio permitió conocer la calidad microbiológica del agua del Golfo de Fonseca, a través de un programa de monitoreo realizado durante 12 meses, en 9 puntos de muestreo distribuidos en 3 sectores. "A" estero La Manzanilla-Isla Perico, "B" Ciudad de La Unión ­ bocana río Goascorán y "C" estero El Tamarindo ­ Isla Meanguera. El propósito fue obtener registros de contaminación de aguas costeras para el país y el impacto que las aguas residuales producen en el ambiente costero y la pérdida de la calidad del agua para actividades tales como la maricultura y la recreación. Entre las bacterias encontradas se encuentran: Enterococcus, Pseudomonas, Vibrios y Heterótrofas. Dichas bacterias están asociadas con diferentes enfermedades para la salud humana, tal es el caso de las pseudomonas, las cuales están frecuentemente asociadas a infecciones de los tractos respiratorio y urinario. Los resultados obtenidos de Vibrio indican que el agua no es apta para uso en acuicultura, ni para uso recreativo, el agua se encuentra en el límite de referencia en cuanto al uso con propósito de producción acuícola y límite de referencia en cuanto al riesgo de consumo de productos pesqueros.


This study allowed to know the microbiological quality of the water of Golfo de Fonseca, through a monitoring program carried out during 12 months, in 9 sampling points distributed in 3 sectors. "A" La Manzanilla estuary- Isla Perico, "B" City of La Unión - Río Goascorán mouth and "C" El Tamarindo estuary - Isla Meanguera. The purpose was to obtain records of coastal water pollution for the country and the impact that wastewater produces on the coastal environment and the loss of water quality for activities such as mariculture and recreation. Among the bacteria found are: Enterococcus, Pseudomonas, Vibrios and Heterotrophs. These bacteria are associated with different diseases for human health, such is the case of pseudomonas, which are frequently associated with infections of the respiratory and urinary tracts. The results obtained from Vibrio indicate that the water is not suitable for use in aquaculture, nor for recreational use, the water is at the reference limit in terms of use for the purpose of aquaculture production and the reference limit regarding the risk of consumption. of fishery products.


Subject(s)
Bacteria , Water Quality , Water Quality Criteria , Water , Aquaculture , Pseudomonas , Vibrio , Enterococcus , Waste Water , Fisheries , Sustainable Development
5.
Chinese Journal of Biotechnology ; (12): 2387-2397, 2020.
Article in Chinese | WPRIM | ID: wpr-878495

ABSTRACT

Recently, fast-growing Vibrio natriegens, as the great potential chassis, has shown a wide application in synthetic biology. Genome editing is an indispensable tool for genetic modification in synthetic biology. However, genome editing tools with high efficiency and fidelity are still to be developed for V. natriegens synthetic biology. To deal with this problem, the physiological characteristics of 6 V. natriegens strains were evaluated, and CICC 10908 strain with fast and stable growth was selected as the host strain for genome editing study. Then, the natural transformation system of V. natriegens was established and optimized. The efficiencies of optimized natural transformation that integrates antibiotic resistance marker cat-sacB or Kan(R) onto the chromosome of V. natriegens could reach 4×10⁻⁵ and 4×10⁻⁴, respectively. Based on the optimized natural transformation, a double-selection cassette was used to achieve seamless genome editing with high efficiency and fidelity. The positive rates of four different types of genetic manipulation, including gene deletion, complementation, insertion and substitution, were 93.8%, 100%, 95.7% and 100%, respectively. Finally, transformation and elimination of the recombinant plasmid could be easily achieved in V. natriegens. This work provides a seamless genome editing system with high efficiency and fidelity for V. natriegens synthetic biology.


Subject(s)
Gene Editing , Plasmids/genetics , Synthetic Biology , Vibrio/genetics
6.
Rev. argent. microbiol ; 51(2): 170-178, jun. 2019.
Article in English | LILACS | ID: biblio-1013369

ABSTRACT

Steroids, including testosterone, estrone, 17β-estradiol, estriol and 17β-ethinyl estradiol, are harmful not only to the population dynamics of aquatic life forms but also to public health. In this study, a marine testosterone-degrading bacterium (strain N3) was isolated from Nanao Island in the South China Sea. In addition, the strain could also use 17β-estradiol (E2), 17β-ethinyl estradiol (EE2), estriol (E3) or cholesterol as a sole carbon source. According to the 16S rRNA gene sequence analysis, strain N3 was identified as Vibrio sp. Further characterization showed that the strain is aerobic, gram-negative, and mobile and exhibits resistance to ampicillin, carbenicillin, penicillin and spectinomycin. For enhancing its capacity of testosterone degradation, the Plackett-Burman factorial design and the central composite design were used to optimize the culture condition. Under optimal conditions, 92% of testosterone was degraded by Vibrio sp. N3 in 48 h.


Los esferoides-que incluyen la testosterona, la estrona, el 17 β-estradiol, el estriol y el 17 p-etinilestradiol-son nocivos no solo para la población dinámica de las formas de vida acuática, sino también para la salud pública. En este estudio se aisló una bacteria marina degradadora de testosterona de la isla de Nanao, en el Mar del Sur de China, a la que se denominó cepa N3. Se determinó que esta cepa también podría usar 17 β-estradiol (E2), 17 p-etinilestradiol (EE2), estriol (E3) o colesterol como únicas fuentes de carbono. De acuerdo con el análisis de la secuencia del gen 16S rRNA, la cepa N3 se identificó como Vibrio sp. La caracterización adicional mostró que dicha bacteria es un organismo aerobio, gram negativo y móvil, y que presenta resistencia a ampicilina, carbenicilina, penicilina y espectinomicina. Para optimizar la condición de cultivo en relación con su capacidad de degradar la testosterona, se utilizaron el diseño factorial Plackett-Burman y el diseno compuesto central. En condiciones óptimas, el 92% de la testosterona fue degradada por Vibrio sp. N3 en 48 h.


Subject(s)
Testosterone/antagonists & inhibitors , Vibrio/isolation & purification , Vibrio/genetics , Marine Environment/analysis , Sequence Analysis/methods
7.
Article in English | WPRIM | ID: wpr-786513

ABSTRACT

OBJECTIVES: Pathogenic Vibrio species are widely distributed in warm estuarine and coastal environments, and can infect humans through the consumption of raw or mishandled contaminated seafood and seawater. For this reason, the distribution of these bacteria in South Korea was investigated.METHODS: Seawater samples were collected from 145 coastal area points in the aquatic environment in which Vibrio species live. Environmental data (i.e., water temperature, salinity, turbidity, and atmospheric temperature) was collected which may help predict the distribution of the species (data not shown). Seawater samples were filtered, and incubated overnight in alkaline peptone water, at 37°C. Using species-specific polymerase chain reaction methods, screening tests were performed for the hlyA, ctxA, vvhA, and tlh genes. Clones of pathogenic Vibrio species were isolated using 3 selective plating media.RESULTS: In 2017, total seawater isolation rates for Vibrio vulnificus, Vibrio cholerae (non-pathogenic, non-O1, non-O139 serogroups), and Vibrio parahaemolyticus were 15.82%, 13.18%, 65.80%, respectively. However, in 2018 isolation rates for each were 21.81%, 19.40%, and 70.05%, respectively.CONCLUSION: The isolation rates of pathogenic Vibrio species positively correlated with the temperature of seawater and atmosphere, but negatively correlated with salinity and turbidity. From 2017 to 2018, the most frequent seawater-isolated Vibrio species were V. parahaemolyticus (68.10 %), V. vulnificus (16.54%), and non-toxigenic V. cholerae (19.58%). Comprehensive monitoring, prevention, and control efforts are needed to protect the public from pathogenic Vibrio species.


Subject(s)
Atmosphere , Bacteria , Cholera , Clone Cells , Humans , Korea , Mass Screening , Peptones , Polymerase Chain Reaction , Salinity , Seafood , Seawater , Vibrio cholerae , Vibrio parahaemolyticus , Vibrio vulnificus , Vibrio , Water
8.
Article in English | WPRIM | ID: wpr-758951

ABSTRACT

Porcine epidemic diarrhea (PED) is a highly contagious enteric swine disease. The large economic impact of PED on the swine industry worldwide has made the development of an effective PED vaccine a necessity. S0, a truncated region of the porcine epidemic diarrhea virus (PEDV) spike protein, has been suggested as a candidate antigen for PED subunit vaccines; however, poor solubility problems when the protein is expressed in Escherichia coli, and the inherent problems of subunit vaccines, such as low immunogenicity, remain. Flagellin has been widely used as a fusion partner to enhance the immunogenicity and solubility of many difficult-to-express proteins; however, the conjugation effect of flagellin varies depending on the target antigen or the position of the fusion placement. Here, we conjugated flagellin, Vibrio vulnificus FlaB, to the N- and C-termini of S0 and evaluated the ability of the fusion to enhance the solubility and immunogenicity of S0. Flagellin conjugation in the presence of the trigger factor chaperone tig greatly improved the solubility of the fusion protein (up to 99%) regardless of its conjugation position. Of importance, flagellin conjugated to the N-terminus of S0 significantly enhanced S0-specific humoral immune responses compared to other recombinant antigens in Balb/c mice. The mechanism of this phenomenon was investigated through in vitro and in vivo studies. These findings provide important information for the development of a novel PED vaccine and flagellin-based immunotherapeutics.


Subject(s)
Animals , Diarrhea , Escherichia coli , Flagellin , Immunity, Humoral , In Vitro Techniques , Mice , Porcine epidemic diarrhea virus , Solubility , Swine , Swine Diseases , Vaccines, Subunit , Vibrio vulnificus , Vibrio
9.
Electron. j. biotechnol ; 31: 24-33, Jan. 2018. ilus, tab
Article in English | LILACS | ID: biblio-1022261

ABSTRACT

Vibrios are common inhabitants of marine and estuarine environments. Some of them can be pathogenic to humans and/or marine animals using a broad repertory of virulence factors. Lately, several reports have indicated that the incidence of Vibrio infections in humans is rising and also in animals constitute a continuing threat for aquaculture. Moreover, the continuous use of antibiotics has been accompanied by an emergence of antibiotic resistance in Vibrio species, implying a necessity for efficient treatments. One promising alternative that emerges is the use of lytic bacteriophages; however, there are some drawbacks that should be overcome to make phage therapy a widely accepted method. In this work, we discuss about the major pathogenic Vibrio species and the progress, benefits and disadvantages that have been detected during the experimental use of bacteriophages to their control.


Subject(s)
Bacteriophages/physiology , Vibrio/pathogenicity , Phage Therapy , Virulence
11.
Article in English | WPRIM | ID: wpr-718189

ABSTRACT

Vibrio vulnificus is a gram-negative bacterium that can cause serious, potentially fatal infections. V. vulnificus causes three distinct syndromes: an overwhelming primary septicemia caused by consuming contaminated seafood, wound infections acquired when an open wound is exposed to contaminated warm seawater, and gastrointestinal tract-limited infections. Case-fatality rates are higher than 50% for primary septicemia, and death typically occurs within 72 hours of hospitalization. Risk factors for V. vulnificus infection include chronic liver disease, alcoholism, and hematological disorders. When V. vulnificus infection is suspected, appropriate antibiotic treatment and surgical interventions should be performed immediately. Third-generation cephalosporin with doxycycline, or quinolone with or without third-generation cephalosporin, may be potential treatment options for patients with V. vulnificus infection.


Subject(s)
Alcoholism , Diagnosis , Doxycycline , Hospitalization , Humans , Liver Diseases , Prognosis , Public Health , Risk Factors , Seafood , Seawater , Sepsis , Vibrio vulnificus , Vibrio , Wound Infection , Wounds and Injuries
12.
Epidemiology and Health ; : 2018056-2018.
Article in English | WPRIM | ID: wpr-786822

ABSTRACT

OBJECTIVES: Water-borne diseases caused by Vibrio parahemolyticus are often known to cause gastritis when raw or undercooked seafood is eaten. It is very rare that Vibrio gastritis caused by ingesting non-seafood products occurs on a large scale. On September 19, 2017, a large-scale Vibrio gastritis occurred after the city residents consumed food at a bazaar held in a welfare center in Jungnang-gu, Seoul.METHODS: The total number of visitors was approximately 299, and 237 (79.3%) of them showed symptoms. Among those who showed symptoms, 116 (48.9%) consulted the hospital, and 53 (45.6%) were hospitalized. Among the 299 exposed individuals, 174 (58.1%) responded to this survey: 163 (93.6%) with and 11 (6.4%) without symptoms. This study was retrospectively conducted by investigating the exposed individuals. To investigate the spread of infection, medical staff of hospitals in the epidemic area were interviewed, exposed individuals surveyed, microbiological testing conducted, and ingredient handling and cooking processes investigated.RESULTS: A total of 237 individuals, including 6 food handlers, were affected (prevalence, 79.2%). During the microbiological testing, V. parahemolyticus was found in 34 patients and 4 food handlers. In the consumption analysis, the relative risk of kimbap was 6.79 (confidence interval 1.10 to 41.69). In-depth investigation found that squid, an ingredient of Korean pancake, and egg sheets, an ingredient of kimbap, were prepared using the same cutting board and knife, which were thought to be the cause of cross-contamination that led to a large-scale outbreak of Vibrio gastritis.CONCLUSION: A recent large-scale outbreak of Vibrio gastritis occurred due to the cross-contamination with kimbap during the preparation process of squid rather than the actual consumption of seafood. Thus, a more stringent hygiene management is necessary during the processing and management of food to prevent infections associated with V. parahemolyticus.


Subject(s)
Cooking , Decapodiformes , Gastritis , Gastroenteritis , Humans , Hygiene , Korea , Medical Staff , Ovum , Prevalence , Retrospective Studies , Seafood , Seoul , Vibrio parahaemolyticus , Vibrio
13.
Article in Korean | WPRIM | ID: wpr-760479

ABSTRACT

BACKGROUND: Among the many Vibrio species that can cause infections in humans, several species can cause a fatal outcome. Therefore, accurate identification of Vibrio species is very important. Since some species show atypical phenotypic features, selecting an appropriate molecular method is necessary to avoid misdiagnosis. METHODS: Vibrio clinical isolates (N=53) and reference strains (N=8) were used in this study. We analyzed the following sequences for identification: dnaJ gene, 16S rDNA, gyrase B (gyrB) V. vulnificus-specific sequence, gyrB V. navarrensis-specific sequence, and V. vulnificus hemolysin gene PCR (Vvh PCR). We performed phylogenetic analysis of the 16S rDNA, dnaJ, and gyrB sequences. Final identification was based on the combined results of all tests described above. Concordance of the 16S rDNA and dnaJ sequence analysis was measured using the Chi-square test. RESULTS: The 61 Vibrio strains were identified as follows, in descending order: V. vulnificus (78.69%), V. parahaemolyticus (6.56%), V. navarrensis (4.92%), V. mimicus (1.64%), V. cholera (1.64%), V. furnissii (1.64%), V. alginolyticus (1.64%), and Grimontia hollisae (1.64%). The accuracy rates of the dnaJ gene and 16S rDNA sequence for identification were 91.80% and 86.89%, respectively. The 16S rDNA and dnaJ sequences showed a concordance rate of 0.45, which indicates moderate agreement. CONCLUSIONS: Our results suggest that analysis of the dnaJ sequence may be a useful method for the identification of clinical isolates of Vibrio species, especially for distinguishing between closely related Vibrio species.


Subject(s)
Cholera , Diagnostic Errors , DNA, Ribosomal , Fatal Outcome , Humans , Methods , Polymerase Chain Reaction , Sequence Analysis , Vibrio
14.
Article in Korean | WPRIM | ID: wpr-713360

ABSTRACT

BACKGROUND: We attempted to determine the characteristics of diarrheal pathogens according to species, seasonal variations, and patient age using multiplex PCR for the epidemiologic study of diarrheal disease in Jeju Island. METHODS: From March 2015 to Feb 2017, stool specimens were collected from 537 diarrheal patients older than 16 years. Multiplex PCR was used to identify pathogens and found Group A Rotavirus, enteric Adenovirus, Norovirus GI/GII, Astrovirus, Salmonella spp., Shigella spp., Vibrio spp., Campylobacter spp., Clostridium difficile toxin B (CDB), Clostridium perfringens, Yersinia enterocolitica, Aeromonas spp., Escherichia coli O157:H7, and verocytotoxin-producing E. coli (VTEC). RESULTS: Pathogens were isolated from 221 of 537 samples (41.2%); 9.3% were positive only for viral pathogens; 30.2%, only for bacterial pathogens; and 1.7%, for both viral and bacterial pathogens. Bacteria were more prevalent in spring, summer, and autumn, but viral pathogens were more prevalent in winter. Overall prevalence were Campylobacter spp. (26.7%), Clostridium perfringens (23.9%); Norovirus GII (11.4%), CDB (8.2%), Aeromonas spp. (6.3%), Group A Rotavirus (5.1%), Salmonella spp. (3.9%), Astrovirus (3.9%), Norovirus GI (3.1%), Vibrio spp (2.7%), enteric Adenovirus (1.6%), Shigella spp. (1.2%), VTEC (1.2%), and Yersinia enterocolitica (0.4%). Group A Rotavirus and Norovirus GII were more prevalent in winter and early spring. Campylobacter spp., CDB, and C. perfringens were detected frequently, without seasonal variation. CONCLUSION: Bacterial pathogens are more prevalent than viruses in acute diarrhea in adults living in Jeju Island, especially in spring, summer, and autumn. Viral pathogens are prevalent in winter. Campylobacter spp., CDB, and Clostridium perfringens are the major pathogens occurring without seasonal variations. These data will be helpful in identifying diarrheal pathogens and for treatments and prevention strategies.


Subject(s)
Adenoviridae , Adult , Aeromonas , Bacteria , Campylobacter , Clostridioides difficile , Clostridium perfringens , Diarrhea , Epidemiologic Studies , Epidemiology , Escherichia coli , Humans , Multiplex Polymerase Chain Reaction , Norovirus , Prevalence , Rotavirus , Salmonella , Seasons , Shiga-Toxigenic Escherichia coli , Shigella , Vibrio , Yersinia enterocolitica
15.
Singapore medical journal ; : 224-227, 2018.
Article in English | WPRIM | ID: wpr-687885

ABSTRACT

We present five patients with vibrio necrotising fasciitis, a lethal and disabling disease. Two of these patients had a history of exposure to either warm seawater or raw/live seafood, three had underlying chronic liver disease, and four presented with hypotension and fever. There were three deaths and four patients required intensive care unit stays. Among the two survivors, one had high morbidity. Only one patient met the criteria of Laboratory Risk Indicator for Necrotising Fasciitis score > 6. A clinician should suspect possible vibrio necrotising fasciitis if the following are present: contact with fresh seafood/warm seawater, a known history of chronic liver disease and pain that is out of proportion to cutaneous signs. All patients must be managed via intensive care in high dependency units. We recommend a two-step surgical protocol for patient management involving an initial local debridement, followed by a second-stage radical debridement and skin grafting.


Subject(s)
Aged , Aged, 80 and over , Debridement , End Stage Liver Disease , Fasciitis, Necrotizing , Diagnosis , Microbiology , General Surgery , Female , Fever , Hepatitis B , Humans , Hypotension , Male , Middle Aged , Retrospective Studies , Risk Factors , Seafood , Seawater , Severity of Illness Index , Singapore , Skin Transplantation , Vibrio , Vibrio Infections , Diagnosis , General Surgery
16.
Epidemiology and Health ; : e2018056-2018.
Article in English | WPRIM | ID: wpr-721381

ABSTRACT

OBJECTIVES: Water-borne diseases caused by Vibrio parahemolyticus are often known to cause gastritis when raw or undercooked seafood is eaten. It is very rare that Vibrio gastritis caused by ingesting non-seafood products occurs on a large scale. On September 19, 2017, a large-scale Vibrio gastritis occurred after the city residents consumed food at a bazaar held in a welfare center in Jungnang-gu, Seoul. METHODS: The total number of visitors was approximately 299, and 237 (79.3%) of them showed symptoms. Among those who showed symptoms, 116 (48.9%) consulted the hospital, and 53 (45.6%) were hospitalized. Among the 299 exposed individuals, 174 (58.1%) responded to this survey: 163 (93.6%) with and 11 (6.4%) without symptoms. This study was retrospectively conducted by investigating the exposed individuals. To investigate the spread of infection, medical staff of hospitals in the epidemic area were interviewed, exposed individuals surveyed, microbiological testing conducted, and ingredient handling and cooking processes investigated. RESULTS: A total of 237 individuals, including 6 food handlers, were affected (prevalence, 79.2%). During the microbiological testing, V. parahemolyticus was found in 34 patients and 4 food handlers. In the consumption analysis, the relative risk of kimbap was 6.79 (confidence interval 1.10 to 41.69). In-depth investigation found that squid, an ingredient of Korean pancake, and egg sheets, an ingredient of kimbap, were prepared using the same cutting board and knife, which were thought to be the cause of cross-contamination that led to a large-scale outbreak of Vibrio gastritis. CONCLUSION: A recent large-scale outbreak of Vibrio gastritis occurred due to the cross-contamination with kimbap during the preparation process of squid rather than the actual consumption of seafood. Thus, a more stringent hygiene management is necessary during the processing and management of food to prevent infections associated with V. parahemolyticus.


Subject(s)
Cooking , Decapodiformes , Gastritis , Gastroenteritis , Humans , Hygiene , Korea , Medical Staff , Ovum , Prevalence , Retrospective Studies , Seafood , Seoul , Vibrio parahaemolyticus , Vibrio
17.
An. acad. bras. ciênc ; 89(2): 1175-1188, Apr.-June 2017. tab, graf
Article in English | LILACS | ID: biblio-886685

ABSTRACT

ABSTRACT Detection of virulent strains associated with aquatic environment is a current concern for the management and control of human and animal health. Thus, Vibrio diversity was investigated in four estuaries from state of Ceará (Pacoti, Choró, Pirangi and Jaguaribe) followed by antimicrobial susceptibility to different antimicrobials used in aquaculture and detection of main virulence factors to human health. Isolation and identification were performed on TCBS agar (selective medium) and dichotomous key based on biochemical characteristics, respectively. Nineteen strains of genus Vibrio were catalogued. Vibrio parahaemolyticus (Choró River) and V. alginolyticus (Pacoti River) were the most abundant species in the four estuaries. All strains were submitted to disk diffusion technique (15 antimicrobials were tested). Resistance was found to: penicillin (82%), ampicillin (54%), cephalotin (7%), aztreonan (1%), gentamicin, cefotaxime and ceftriaxone (0.5%). Five pathogenic strains were chosen to verification of virulence factors. Four estuaries showed a high abundance of species. High number of tested positive strains for virulence is concerning, since some of those strains are associated to human diseases, while others are known pathogens of aquatic organisms.


Subject(s)
Vibrio/drug effects , Vibrio/pathogenicity , Drug Resistance, Multiple , Estuaries , Rivers/microbiology , Vibrio/isolation & purification , Virulence , Water Microbiology , Brazil , Microbial Sensitivity Tests , Virulence Factors , Aquatic Organisms/isolation & purification , Aquatic Organisms/drug effects , Aquatic Organisms/pathogenicity , Geographic Mapping , Anti-Bacterial Agents/pharmacology
18.
Santa Tecla, Libertad; ITCA Editores; feb. 2017. 68 p. ^c28 cm.ilus., tab..
Monography in Spanish | LILACS, BISSAL | ID: biblio-1223734

ABSTRACT

Las enfermedades bacterianas y parasitarias pueden llegar a comprometer los niveles de sobrevivencia de un cultivo de camarón marino. La frecuencia de aparición de camarones muertos en las orillas de los estanques o que aparecen en las atarrayas, son solo un signo o señal de que algo marcha mal en el estanque. Cuando los camarones están sometidos a factores estresantes se reducen su actividad limpiadora, no mudan y por tanto, son altamente susceptibles a la invasión de ectoparásitos. En grados de severidad 3 y 4 de la infestación por ectoparásitos en la superficie corporal del camarón, trae como consecuencia dificultades en la locomoción, la alimentación, la respiración, y finalmente sobreviene la muerte. Por otra parte, las enfermedades de origen bacteriano reportados en los sistemas de cultivo causadas por el género Vibrio, ha llegado a ser la enfermedad económicamente más importante en el cultivo de organismos marinos, afectando un gran número de especies; es catalogada como la causa de serias pérdidas económicas en la producción de camarón de cultivo en diversos países.


Bacterial and parasitic diseases can compromise the survival levels of a marine shrimp culture. The frequency of the appearance of dead shrimp on the banks of the ponds or that appear on the cast nets, are just a sign that something is wrong in the pond. When shrimp are subjected to stress, their cleaning activity is reduced, they do not molt and therefore are highly susceptible to invasion by ectoparasites. In degrees of severity 3 and 4, the infestation by ectoparasites on the body surface of the shrimp, results in difficulties in locomotion, feeding, breathing, and finally, death ensues. On the other hand, the diseases of bacterial origin reported in culture systems caused by the Vibrio genus have become the most economically important disease in the cultivation of marine organisms, affecting a large number of species; It is classified as the cause of serious economic losses in the production of farmed shrimp in various countries.


Subject(s)
Vibrio , Ponds , Penaeidae/growth & development , Penaeidae/parasitology , Parasitic Diseases , Crustacea/parasitology
19.
Rev. téc. (ITCA-FEPADE. En línea) ; 10(10): 27-30, 2017. ^c28 cm.ilus., tab.
Article in Spanish | LILACS, BISSAL | ID: biblio-1177231

ABSTRACT

En El Salvador el 59.3% del camarón marino de la especie Litopenaeus vannamei se produce en la Bahía de Jiquilisco, departamento de Usulután, el cultivo tiene una duración de 60 a 90 días y el peso de cosecha oscila entre 7 y 12 gramos. El bajo crecimiento y las altas mortalidades son problemas que preocupan a este sector productivo. Por esta razón la Escuela Especializada en Ingeniería ITCA-FEPADE a través de la carrera de Gestión Integral de Recursos Marino Costeros, desarrolló una investigación aplicada orientada a identificar la existencia de parásitos y bacterias del género Vibrio en los cultivos de camarón marino que se desarrollan en la zona de Salinas del Potrero y El Zompopero, así como evaluar su incidencia en el cultivo. Con la investigación se detectó la presencia de cinco géneros de parásitos que están presentes en branquias, intestinos y urópodos en el cultivo de camarón marino en grado 1 y 2; ambas categorías se consideran las etapas iniciales de propagación de los parásitos. También se evidenció a través del análisis bacteriológico en el medio de cultivo TCBS, la presencia de bacterias del genero Vibrio en agua, sedimento y camarón.


In El Salvador, 59.3% of the marine shrimp of the Litopenaeus vannamei species is produced in the Bay of Jiquilisco, department of Usulután, the culture lasts from 60 to 90 days and the harvest weight ranges between 7 and 12 grams. Low growth and high mortality are problems that concern this productive sector. For this reason, Escuela Espcializada en Ingeniería ITCA-FEPADE , through the major of Gestión Integral de Recursos Marino Costeros, developed an applied research aimed at identifying the existence of parasites and bacteria of the genus Vibrio in marine shrimp cultures that develop in the area of ​​Salinas del Potrero and El Zompopero, as well as evaluating their impact on the crop. The investigation detected the presence of five types of parasites that are present in gills, intestines and uropods in marine shrimp culture in grade 1 and 2; Both categories are considered the initial stages of parasite spread. The presence of Vibrio bacteria in water, sediment and shrimp is also evidenced through bacteriological analysis in the TCBS culture medium.


Subject(s)
Vibrio , Astacoidea/parasitology , Parasites , Bacteria , Bacteriological Techniques , Aquaculture , Bays
20.
Rev. Inst. Nac. Hig ; 48(1-2): 82-98, 2017. tab, graf
Article in Spanish | LILACS, LIVECS | ID: biblio-1000160

ABSTRACT

En Venezuela, en junio de 1996, se reportó que los casos de cólera eran causados por V. cholerae O1 serotipo Ogawa. A finales de 1998 se detectó un segundo brote de cólera causado por V. cholerae O1 serotipo Inaba resistente a la ampicilina y el trimetoprim-sulfametoxazol. Para estudiar las relaciones entre las cepas se examinaron veinticinco aislados de Vibrio cholerae O1 obtenidos desde 1996 a 2000 en Venezuela, para determinar la presencia de genes de virulencia y perfiles genómicos. Mediante la reacción en cadena de la polimerasa se determinó la presencia de genes de virulencia. Para determinar el perfil genómico de los aislamientos se utilizó ribotipificación y electroforesis en gel de campo pulsado (PFGE). Todos los aislados resultaron positivos para los genes ctxA, ctxB, zot y ace. El análisis RFLP de los genes RNAr mostró un único patrón de ribotipo V. El análisis de PFGE mostró una similitud de 91,5% independientemente del año o lugar de aislamiento, lo que indica la relación genómica entre los aislados. En conjunto, los datos sugieren que la cepa de V. cholerae O1 resistente a los antibióticos que apareció en 1998 surgió de la cepa epidémica anterior o de otro estrechamente relacionado con el clon anterior, con cambio de serotipo y ganancia de determinantes de resistencia a antibióticos. Es muy importante monitorear continuamente la aparición de la variantes porque mejorará la comprensión de la evolución de nuevos clones de V. cholerae


In Venezuela, cholera reported in June 1996 was caused by V. cholerae O1 serotype Ogawa. Second outbreak of cholera caused by V. cholerae O1 serotype Inaba, resistant to ampicillin and trimethoprim- Sulfamethoxazole, was notify at the end of 1998. Twenty-five isolates of Vibrio cholerae O1 obtained from 1996 to 2000 in Venezuela were examined to study the relationships between strains, presence of virulence genes and genomic profiles. Presence of virulence genes was detected by Polymerase Chain Reaction. Ribotyping and pulsed-field gel electrophoresis (PFGE) were used to determine the genomic profile of isolates. All isolates shown PCR product for ctxA, ctxB, zot and ace genes. RFLP analysis of rRNA gene showed one unique pattern from ribotype V. PFGE analysis revealed a similarity of 91.5%, regardless year or place of isolation, suggesting genomic relatedness among them. Overall, these data suggest that antibiotic resistant V. cholerae O1 El Tor strain that appeared in 1998 emerged from the previous epidemic strain or from another closely related to the previous clone. It is important the continuous monitor the emergence of variants because it will improve our understanding of the evolution of new clones V. cholerae


Subject(s)
Humans , Male , Female , Vibrio cholerae , Cholera/epidemiology , Ribotyping , Molecular Typing , Vibrio/chemistry , Public Health , Anti-Bacterial Agents
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