Results 71 to 80 of about 12,773,381 (399)

The influence of the accessory genome on bacterial pathogen evolution [PDF]

open access: yes, 2011
Bacterial pathogens exhibit significant variation in their genomic content of virulence factors. This reflects the abundance of strategies pathogens evolved to infect host organisms by suppressing host immunity.
Abu-Ali GS   +120 more
core   +2 more sources

In Silico Detection of Virulence Gene Homologues in the Human Pathogen Spp.

open access: yesEvolutionary Bioinformatics, 2014
There is an ongoing debate about the clinical significance of Sphingomonas paucimobilis as a virulent bacterial pathogen. In the present study, we investigated the presence of different virulence factors and genes in Sphingomonas bacteria.
Amr T. M. Saeb   +2 more
doaj   +1 more source

Identification of Streptococcus suis putative zoonotic virulence factors: A systematic review and genomic meta-analysis

open access: yesVirulence, 2021
Streptococcus suis is an emerging zoonotic pathogen. Over 100 putative virulence factors have been described, but it is unclear to what extent these virulence factors could contribute to zoonotic potential of S. suis. We identified all S.
Thomas J. Roodsant   +4 more
doaj   +1 more source

Similarity Is Not Enough: Tipping Points of Ebola Zaire Mortalities [PDF]

open access: yes, 2014
In early 2014 an outbreak of a slightly mutated Zaire Ebola subtype appeared in West Africa which is less virulent than 1976 and 1994 strains. The numbers of cases per year appear to be ~ 1000 times larger than the earlier strains, suggesting a greatly enhanced transmissibility.
arxiv   +1 more source

Virulence factors of the family Legionellaceae

open access: yesMicrobiological Reviews, 1992
Whereas bacteria in the genus Legionella have emerged as relatively frequent causes of pneumonia, the mechanisms underlying their pathogenicity are obscure. The legionellae are facultative intracellular pathogens which multiply within the phagosome of mononuclear phagocytes and are not killed efficiently by polymorphonuclear leukocytes.
Robert H. Glew, A. Saha, John N. Dowling
openaire   +3 more sources

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

open access: yesFEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze   +3 more
wiley   +1 more source

The context-specificity of virulence evolution revealed through evolutionary invasion analysis [PDF]

open access: yesarXiv, 2023
Models are often employed to integrate knowledge about epidemics across scales and simulate disease dynamics. While these approaches have played a central role in studying the mechanics underlying epidemics, we lack ways to reliably predict how the relationship between virulence (the harm to hosts caused by an infection) and transmission will evolve in
arxiv  

Virulence factors of Haemophilus ducreyi [PDF]

open access: yesInfection and Immunity, 1984
We investigated the susceptibility of virulent and avirulent strains of Haemophilus ducreyi to the bactericidal activity of normal human serum and to phagocytosis and killing by human polymorphonuclear leukocytes (PMNL). Strains were defined as virulent if intradermal inoculation into a rabbit produced a typical necrotic lesion.
G M Wiseman, A R Ronald, J A Odumeru
openaire   +3 more sources

Discovery of new diketopiperazines inhibiting Burkholderia cenocepacia quorum sensing in vitro and in vivo [PDF]

open access: yes, 2016
Burkholderia cenocepacia, an opportunistic respiratory pathogen particularly relevant for cystic fibrosis patients, is difficult to eradicate due to its high level of resistance to most clinically relevant antimicrobials.
Azzalin, Alberto   +11 more
core   +2 more sources

The solution supramolecular structure of α2 → 8 polysialic acid suggests a structural cause for its low immunogenicity

open access: yesFEBS Letters, EarlyView.
α2 → 8 polysialic acid elicits poor immunogenicity. Small‐angle scattering shows a supramolecular structure with parallel‐chain binding, although in different forms at μm and mm calcium. The major histocompatibility complex requires molecular weights around 2000 Da to produce antibodies, and 2000 Da polysialic oligomers will bind in these structures ...
Kenneth A. Rubinson
wiley   +1 more source

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