scholarly journals Resistance of Mice of the 129 Background to Yersinia pestis Maps to Multiple Loci on Chromosome 1

2016 ◽  
Vol 84 (10) ◽  
pp. 2904-2913 ◽  
Author(s):  
Michael Tencati ◽  
Richard I. Tapping
Keyword(s):  
Yersinia Pestis ◽  
Causative Agent ◽  
Chromosome 1 ◽  
Resistance Locus ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Pneumonic Plague ◽  
Content Type ◽  
Slc11a1 Gene ◽  
Multiple Loci

Yersinia pestisis a Gram-negative bacterium that is the causative agent of bubonic and pneumonic plague. It is commonly acquired by mammals such as rodents and humans via the bite of an infected flea. We previously reported that multiple substrains of the 129 mouse background are resistant to pigmentation locus-negative (pgm−)Yersinia pestisand that this phenotype maps to a 30-centimorgan (cM) region located on chromosome 1. In this study, we have further delineated this plague resistance locus to a region of less than 20 cM through the creation and phenotyping of recombinant offspring arising from novel crossovers in this region. Furthermore, our experiments have revealed that there are at least two alleles in this initial locus, both of which are required for resistance on a susceptible C57BL/6 background. These two alleles work intranssince resistance is restored in offspring possessing one allele contributed by each parent. Our studies also indicated that the Slc11a1 gene (formerly known as Nramp1) located within the chromosome1 locus is not responsible for conferring resistance to 129 mice.

scholarly journals Combinatorial Viral Vector-Based and Live Attenuated Vaccines without an Adjuvant to Generate Broader Immune Responses to Effectively Combat Pneumonic Plague

mBio ◽  
2021 ◽  
Author(s):  
Paul B. Kilgore ◽  
Jian Sha ◽  
Emily K. Hendrix ◽  
Vladimir L. Motin ◽  
Ashok K. Chopra
Keyword(s):  
Immune Responses ◽  
Yersinia Pestis ◽  
Causative Agent ◽  
Viral Vector ◽  
Human Pathogen ◽  
Pneumonic Plague ◽  
Content Type ◽  
Live Attenuated Vaccines ◽  
Tier 1

Yersinia pestis , the causative agent of plague, is a Tier-1 select agent and a reemerging human pathogen. A 2017 outbreak in Madagascar with >75% of cases being pneumonic and 8.6% causalities emphasized the importance of the disease.

scholarly journals Draft Genome Sequence of Taylorella equigenitalis Strain 210217RC10635, Isolated from a Pony Stallion in Germany

2018 ◽  
Vol 7 (12) ◽  
Author(s):  
Falk Melzer ◽  
Astrid Raßbach ◽  
Astrid Köenig-Mozes ◽  
Mandy Carolina Elschner ◽  
Herbert Tomaso ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Causative Agent ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Taylorella Equigenitalis ◽  
Content Type ◽  
Contagious Equine Metritis

Here, we report the draft genome sequence of Taylorella equigenitalis strain 210217RC10635, a Gram-negative bacterium belonging to the genus Taylorella and the order Burkholderiales. Taylorella equigenitalis is the causative agent of contagious equine metritis (CEM).

scholarly journals Draft Genome Sequence of Pantoea sp. Strain A4, a Rafflesia-Associated Bacterium That ProducesN-Acylhomoserine Lactones as Quorum-Sensing Molecules

2012 ◽  
Vol 194 (23) ◽  
pp. 6610-6610 ◽  
Author(s):  
Kar-Wai Hong ◽  
Han Ming Gan ◽  
Siew-Moon Low ◽  
Patrick Kok Yuen Lee ◽  
Yee-Meng Chong ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Content Type ◽  
First Time

ABSTRACTPantoeasp. strain A4 is a Gram-negative bacterium isolated from theRafflesiaflower. We present here, for the first time, the genome sequence ofRafflesia-associatedPantoeasp. strain A4, which exhibited quorum-sensing activity.

scholarly journals Draft Genome Sequence of the Industrially Significant Bacterium Pseudomonas fluorescens ATCC 13525

2018 ◽  
Vol 7 (17) ◽  
Author(s):  
M. J. Meier ◽  
R. M. Subasinghe ◽  
L. A. Beaudette
Keyword(s):  
Antibiotic Resistance ◽  
Pseudomonas Fluorescens ◽  
Virulence Factors ◽  
Draft Genome ◽  
Antibiotic Resistance Genes ◽  
Strain Atcc ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Content Type ◽  
Metabolic Functions

Pseudomonas fluorescens is a Gram-negative bacterium with versatile metabolic functions and potential industrial uses. We sequenced P. fluorescens strain ATCC 13525 with the goal of determining virulence factors and antibiotic resistance genes to predict the potential impacts on human and environmental health in the event of exposure.

scholarly journals Complete Genome Sequence of Pseudomonas sp. Strain phDV1, an Isolate Capable of Efficient Degradation of Aromatic Hydrocarbons

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Hao Xie ◽  
Giannis Valsamidis ◽  
Eirini Mathioudaki ◽  
Georgios Tsiotis
Keyword(s):  
Genome Sequence ◽  
Aromatic Hydrocarbons ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Pseudomonas Sp ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Content Type

Pseudomonas sp. strain phDV1 is a Gram-negative bacterium capable of degrading aromatic hydrocarbons. Here, we present the complete genome sequence of this strain, which consists of 4,727,682 bp, with a 62.3% G+C content and 4,574 genes.

scholarly journals Complete Genome Sequence of Klebsiella pneumoniae Strain TK421, a Conjugative Hypervirulent Isolate

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Travis J. Kochan ◽  
Egon A. Ozer ◽  
Nathan B. Pincus ◽  
Margaret A. Fitzpatrick ◽  
Alan R. Hauser
Keyword(s):  
Klebsiella Pneumoniae ◽  
Genome Sequence ◽  
Nosocomial Infections ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Multidrug Resistant ◽  
Negative Bacterium ◽  
Gram Negative ◽  
Content Type ◽  
Rapid Dissemination

Klebsiella pneumoniae is a Gram-negative bacterium that is a major cause of nosocomial infections worldwide. Here, we present the complete genome sequence of TK421, a clinical bacteremia isolate containing a hypervirulence plasmid carrying tra-associated conjugation machinery genes. Emergence of conjugative hypervirulence plasmids could portend rapid dissemination of hypervirulence among multidrug-resistant K. pneumoniae strains.

scholarly journals Draft Genome Sequences of Two Pseudomonas aeruginosa Isolates from the Female Urogenital Tract

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Genevieve Johnson ◽  
Carine R. Mores ◽  
Alan J. Wolfe ◽  
Catherine Putonti
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Environmental Conditions ◽  
Draft Genome ◽  
Urogenital Tract ◽  
Negative Bacterium ◽  
Genome Sequences ◽  
Gram Negative ◽  
Content Type

Pseudomonas aeruginosa is a Gram-negative bacterium that has the ability to survive in and readily adapt to a variety of environmental conditions. Here, we report 2 genome sequences of P. aeruginosa strains, UMB1046 and UMB5686, isolated from the female urogenital tract.

scholarly journals Inhibition of Neutrophil Primary Granule Release during Yersinia pestis Pulmonary Infection

mBio ◽  
2019 ◽  
Vol 10 (6) ◽  
Author(s):  
Kara R. Eichelberger ◽  
Grant S. Jones ◽  
William E. Goldman
Keyword(s):  
Yersinia Pestis ◽  
Critical Role ◽  
Immune Defense ◽  
Calcium Flux ◽  
Human Neutrophils ◽  
Pneumonic Plague ◽  
Content Type ◽  
Neutrophil Degranulation ◽  
Primary Granule ◽  
Granule Release

ABSTRACT Inhalation of Yersinia pestis causes primary pneumonic plague, the most severe manifestation of plague that is characterized by a dramatic neutrophil influx to the lungs. Neutrophils are ineffective during primary pneumonic plague, failing to control Y. pestis growth in the airways. However, the mechanisms by which Y. pestis resists neutrophil killing are incompletely understood. Here, we show that Y. pestis inhibits neutrophil degranulation, an important line of host innate immune defense. We observed that neutrophils from the lungs of mice infected intranasally with Y. pestis fail to release primary granules throughout the course of disease. Using a type III secretion system (T3SS) injection reporter strain, we determined that Y. pestis directly inhibits neutrophil granule release by a T3SS-dependent mechanism. Combinatorial mutant analysis revealed that a Y. pestis strain lacking both effectors YopE and YopH did not inhibit primary granule release and is killed by neutrophils both in vivo and in vitro. Similarly, Y. pestis strains injecting only YopE or YopH are able to inhibit the majority of primary granule release from human neutrophils. We determined that YopE and YopH block Rac2 activation and calcium flux, respectively, to inhibit neutrophil primary granule release in isolated human neutrophils. These results demonstrate that Y. pestis coordinates the inhibition of neutrophil primary granule release through the activities of two distinct effectors, and this inhibition promotes Y. pestis survival during primary pneumonic plague. IMPORTANCE Yersinia pestis is the causative agent of plague and is one of the deadliest human pathogens. The pneumonic form of Y. pestis infection has played a critical role in the severity of both historical and modern plague outbreaks, yet the host-pathogen interactions that govern the lethality of Yersinia pestis pulmonary infections are incompletely understood. Here, we report that Yersinia pestis inhibits neutrophil degranulation during infection, rendering neutrophils ineffective and allowing unrestricted growth of Y. pestis in the lungs. This coordinated inhibition of granule release not only demonstrates the pathogenic benefit of “silencing” lung neutrophils but also reveals specific host processes and pathways that could be manipulated to reduce the severity of primary pneumonic plague.

scholarly journals Draft Genome Sequences of 42 Environmental Vibrio vulnificus Strains Isolated from the Northern Gulf of Mexico

2019 ◽  
Vol 8 (28) ◽  
Author(s):  
Megan M. Mullis ◽  
I-Shuo Huang ◽  
Githzette M. Planas-Costas ◽  
Reavelyn Pray ◽  
Gregory W. Buck ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Necrotizing Fasciitis ◽  
Vibrio Vulnificus ◽  
Draft Genome ◽  
Opportunistic Pathogen ◽  
Negative Bacterium ◽  
Genome Sequences ◽  
Gram Negative ◽  
Content Type ◽  
Northern Gulf Of Mexico

Vibrio vulnificus is a Gram-negative bacterium and an opportunistic pathogen that can cause septicemia or necrotizing fasciitis. Here, we report the draft genome sequences of 42 environmental V. vulnificus strains collected from the northern Gulf of Mexico. These data will allow for more robust comparisons between clinical and environmental strains.

scholarly journals Lack of Antimicrobial Resistance in Yersinia pestis Isolates from 17 Countries in the Americas, Africa, and Asia

2011 ◽  
Vol 56 (1) ◽  
pp. 555-558 ◽  
Author(s):  
Sandra K. Urich ◽  
Linda Chalcraft ◽  
Martin E. Schriefer ◽  
Brook M. Yockey ◽  
Jeannine M. Petersen
Keyword(s):  
Public Health ◽  
Multidrug Resistance ◽  
Antimicrobial Resistance ◽  
Yersinia Pestis ◽  
Causative Agent ◽  
Multidrug Resistant ◽  
Antimicrobial Treatment ◽  
Health Concern ◽  
Public Health Concern ◽  
Content Type

ABSTRACTYersinia pestisis the causative agent of plague, a fulminant disease that is often fatal without antimicrobial treatment. Plasmid (IncA/C)-mediated multidrug resistance inY. pestiswas reported in 1995 in Madagascar and has generated considerable public health concern, most recently because of the identification of IncA/C multidrug-resistant plasmids in other zoonotic pathogens. Here, we demonstrate no resistance in 392Y. pestisisolates from 17 countries to eight antimicrobials used for treatment or prophylaxis of plague.

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