Exemplar Abstract for Vibrio vulnificus (Reichelt et al. 1979) Farmer 1980.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Vibrio Vulnificus

scholarly journals Structure, Function, and Regulation of the Essential Virulence Factor Capsular Polysaccharide of Vibrio vulnificus

2020 ◽  
Vol 21 (9) ◽  
pp. 3259 ◽  
Author(s):  
Gregg S. Pettis ◽  
Aheli S. Mukerji
Keyword(s):  
Coastal Waters ◽  
Capsular Polysaccharide ◽  
Vibrio Vulnificus ◽  
Critical Role ◽  
Phase Variation ◽  
Innate Immune ◽  
Repeat Sequences ◽  
Life Threatening ◽  
Inflammatory Cytokine Response ◽  
Group 1

Vibrio vulnificus populates coastal waters around the world, where it exists freely or becomes concentrated in filter feeding mollusks. It also causes rapid and life-threatening sepsis and wound infections in humans. Of its many virulence factors, it is the V. vulnificus capsule, composed of capsular polysaccharide (CPS), that plays a critical role in evasion of the host innate immune system by conferring antiphagocytic ability and resistance to complement-mediated killing. CPS may also provoke a portion of the host inflammatory cytokine response to this bacterium. CPS production is biochemically and genetically diverse among strains of V. vulnificus, and the carbohydrate diversity of CPS is likely affected by horizontal gene transfer events that result in new combinations of biosynthetic genes. Phase variation between virulent encapsulated opaque colonial variants and attenuated translucent colonial variants, which have little or no CPS, is a common phenotype among strains of this species. One mechanism for generating acapsular variants likely involves homologous recombination between repeat sequences flanking the wzb phosphatase gene within the Group 1 CPS biosynthetic and transport operon. A considerable number of environmental, genetic, and regulatory factors have now been identified that affect CPS gene expression and CPS production in this pathogen.

Sensitively and quickly detecting Vibrio vulnificus by real time recombinase polymerase amplification targeted to vvhA gene

2021 ◽  
Vol 57 ◽  
pp. 101726
Author(s):  
Peng Zhu ◽  
Yan Cui ◽  
Jianhu Pang ◽  
Zi Xiong ◽  
Zuoan Huang ◽  
...  
Keyword(s):  
Real Time ◽  
Vibrio Vulnificus ◽  
Recombinase Polymerase Amplification

A case of Vibrio vulnificus septicaemia acquired in Victoria

1991 ◽  
Vol 154 (3) ◽  
pp. 214-215 ◽  
Author(s):  
Ellen L Maxwell ◽  
Barrie C Mayall ◽  
Stephen R Pearson ◽  
Peter A Stanley
Keyword(s):  
Vibrio Vulnificus

scholarly journals Relationships between Environmental Factors and Pathogenic Vibrios in the Northern Gulf of Mexico

2010 ◽  
Vol 76 (21) ◽  
pp. 7076-7084 ◽  
Author(s):  
C. N. Johnson ◽  
A. R. Flowers ◽  
N. F. Noriea ◽  
A. M. Zimmerman ◽  
J. C. Bowers ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Water Column ◽  
Vibrio Vulnificus ◽  
Environmental Parameters ◽  
Sampling Period ◽  
Pathogenicity Factor ◽  
Hemolysin Gene ◽  
Thermostable Direct Hemolysin ◽  
Pathogenic Vibrios ◽  
Abundance And Distribution

ABSTRACT Although autochthonous vibrio densities are known to be influenced by water temperature and salinity, little is understood about other environmental factors associated with their abundance and distribution. Densities of culturable Vibrio vulnificus containing vvh (V. vulnificus hemolysin gene) and V. parahaemolyticus containing tlh (thermolabile hemolysin gene, ubiquitous in V. parahaemolyticus), tdh (thermostable direct hemolysin gene, V. parahaemolyticus pathogenicity factor), and trh (tdh-related hemolysin gene, V. parahaemolyticus pathogenicity factor) were measured in coastal waters of Mississippi and Alabama. Over a 19-month sampling period, vibrio densities in water, oysters, and sediment varied significantly with sea surface temperature (SST). On average, tdh-to-tlh ratios were significantly higher than trh-to-tlh ratios in water and oysters but not in sediment. Although tlh densities were lower than vvh densities in water and in oysters, the opposite was true in sediment. Regression analysis indicated that SST had a significant association with vvh and tlh densities in water and oysters, while salinity was significantly related to vibrio densities in the water column. Chlorophyll a levels in the water were correlated significantly with vvh in sediment and oysters and with pathogenic V. parahaemolyticus (tdh and trh) in the water column. Furthermore, turbidity was a significant predictor of V. parahaemolyticus density in all sample types (water, oyster, and sediment), and its role in predicting the risk of V. parahaemolyticus illness may be more important than previously realized. This study identified (i) culturable vibrios in winter sediment samples, (ii) niche-based differences in the abundance of vibrios, and (iii) predictive signatures resulting from correlations between environmental parameters and vibrio densities.

scholarly journals Role of DegQ in differential stability of flagellin subunits in Vibrio vulnificus

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
You-Chul Jung ◽  
Mi-Ae Lee ◽  
Han-Shin Kim ◽  
Kyu-Ho Lee
Keyword(s):  
Life Cycle ◽  
Biofilm Formation ◽  
Vibrio Vulnificus ◽  
Differential Regulation ◽  
Specific Manner ◽  
Associated Proteins ◽  
Differential Stability ◽  
Methionine Residues

AbstractBiofilm formation of Vibrio vulnificus is initiated by adherence of flagellated cells to surfaces, and then flagellum-driven motility is not necessary during biofilm maturation. Once matured biofilms are constructed, cells become flagellated and swim to disperse from biofilms. As a consequence, timely regulations of the flagellar components’ expression are crucial to complete a biofilm life-cycle. In this study, we demonstrated that flagellins’ production is regulated in a biofilm stage-specific manner, via activities of a protease DegQ and a chaperone FlaJ. Among four flagellin subunits for V. vulnificus filament, FlaC had the highest affinities to hook-associated proteins, and is critical for maturating flagellum, showed the least susceptibility to DegQ due to the presence of methionine residues in its DegQ-sensitive domains, ND1 and CD0. Therefore, differential regulation by DegQ and FlaJ controls the cytoplasmic stability of flagellins, which further determines the motility-dependent, stage-specific development of biofilms.

Oral Infectivity of Vibrio vulnificus in Suckling Mice

1987 ◽  
Vol 50 (12) ◽  
pp. 1013-1016 ◽  
Author(s):  
ANTOLIN L. REYES ◽  
CLIFFORD H. JOHNSON ◽  
PROCTER L. SPAULDING ◽  
GERARD N. STELMA
Keyword(s):  
Adult Mouse ◽  
Vibrio Vulnificus ◽  
Close Correlation ◽  
Oral Route ◽  
Environmental Isolates ◽  
Suckling Mice ◽  
Virulent Isolate ◽  
Adult Mice ◽  
Lethal Doses ◽  
Intraperitoneal Inoculation

Lethal doses of 11 clinical and environmental isolates of Vibrio vulnificus were determined in suckling mice after oral challenge. With one exception, isolates that were virulent to iron-overloaded adult mice after intraperitoneal inoculation were highly lethal to the infant mice (>50% lethality at 105 CFU/mouse). The virulent isolate that failed to kill infant mice at 105 CFU had lost its invasiveness. Conditionally virulent isolates that were virulent only to simultaneously iron-overloaded and immunosuppressed adult mice required > 109 CFU to kill the infant mice. Avirulent isolates failed to kill at >109 CFU/mouse. There were no significant differences in the lethalities of clinical and environmental isolates. These findings demonstrated a close correlation between virulence in the iron-overloaded adult mouse and infectivity by the oral route.

scholarly journals Correction: Functional implications of hexameric assembly of RraA proteins from Vibrio vulnificus

PLoS ONE ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. e0191775
Author(s):  
Saemee Song ◽  
Seokho Hong ◽  
Jinyang Jang ◽  
Ji-Hyun Yeom ◽  
Nohra Park ◽  
...  
Keyword(s):  
Vibrio Vulnificus ◽  
Functional Implications
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