Results 31 to 40 of about 223,918 (167)

Epigenetic memory at malaria virulence genes [PDF]

Proceedings of the National Academy of Sciences, 2007
During its red blood cell stage, the malaria parasite Plasmodium falciparum can switch its variant surface proteins ( P. falciparum erythrocyte membrane protein 1) to evade the host immune response.
Thanat, Chookajorn, Ron, Dzikowski, Matthias, Frank, Felomena, Li, Alisha Z, Jiwani, Daniel L, Hartl, Kirk W, Deitsch   +6 more
openaire   +2 more sources

Low distribution of genes encoding virulence factors in Shigella flexneri serotypes 1b clinical isolates from eastern Chinese populations

Gut Pathogens, 2017
Background The ability of Shigella to invade, colonize, and eventually kill host cells is influenced by many virulence factors. However, there is no analysis of related genes in Jiangsu Province of China so far.
Wenting Fan, Huimin Qian, Wenkang Shang, Chen Ying, Xuedi Zhang, Song Cheng, Bing Gu, Ping Ma   +7 more
doaj   +1 more source

Genotypic virulence profiles and associations in Salmonella isolated from meat samples in wet markets and abattoirs of Metro Manila, Philippines

BMC Microbiology, 2022
Background Salmonella are pathogenic foodborne bacteria with complex pathogenicity from numerous virulence genes housed in Salmonella pathogenicity islands (SPIs), plasmids, and other gene cassettes.
Rance Derrick N. Pavon, Paolo D. G. Mendoza, Camille Andrea R. Flores, Alyzza Marie B. Calayag, Windell L. Rivera   +4 more
doaj   +1 more source

VIRULENCE GENE REGULATION INSIDE AND OUTSIDE

The Activities of Bacterial Pathogens In Vivo, 2000
Much knowledge about microbial gene regulation and virulence is derived from genetic and biochemical studies done outside of hosts. The aim of this review is to correlate observations made in vitro and in vivo with two different bacterial pathogens in which the nature of regulated gene ...
V J, DiRita, N C, Engleberg, A, Heath, A, Miller, J A, Crawford, R, Yu   +5 more
openaire   +3 more sources

Hybrid Resistance and Virulence Plasmids in “High-Risk” Clones of Klebsiella pneumoniae, Including Those Carrying bla_NDM-5

Microorganisms, 2019
Virulence plasmids are associated with hypervirulent types of Klebsiella pneumoniae, which generally do not carry antibiotic resistance genes. In contrast, nosocomial isolates are often associated with resistance, but rarely with virulence plasmids. Here,
Jane Turton, Frances Davies, Jack Turton, Claire Perry, Zoë Payne, Rachel Pike   +5 more
doaj   +1 more source

Pseudomonas virulence factor controls expression of virulence genes in Pseudomonas entomophila

PLOS ONE, 2023
Quorum sensing is a communication strategy that bacteria use to collectively alter gene expression in response to cell density. Pathogens use quorum sensing systems to control activities vital to infection, such as the production of virulence factors and biofilm formation.
Katie A. Acken, Bo Li
openaire   +3 more sources

Coexistence of virulence genes in methicillin-resistant Staphylococcus aureus clinical isolates

Revista da Sociedade Brasileira de Medicina Tropical
INTRODUCTION: The pathogenic versatility of Staphylococcus aureus is attributed to various virulence genes, including enterotoxins and hemolysins. METHODS: Here, the virulence genes in 177 nosocomial MRSA strains in Porto Alegre, Brazil were detected ...
Adriana Medianeira Rossato, Keli Cristine Reiter, Pedro Alves d’Azevedo   +2 more
doaj   +1 more source

Correlation Analysis of Staphylococcus aureus Drug Resistance and Virulence Factors with Blood Cell Counts and Coagulation Indexes

International Journal of Clinical Practice, 2023
Objective. The influence of different Staphylococcus aureus variants on blood cells and coagulation system was evaluated by investigating the carrying status of drug resistance genes and virulence genes of methicillin-resistantStaphylococcus aureus (MRSA)
Jing Wei, Kaihui Ma, Yuan Zhang, Xincheng Yang, Qiao Tang, Zhenlin Nie   +5 more
doaj   +1 more source

Whole Genome Sequence Analysis of Brucella melitensis Phylogeny and Virulence Factors

Microbiology Research, 2021
Brucellosis has a wide range of clinical severity in humans that remains poorly understood. Whole genome sequencing (WGS) analysis may be able to detect variation in virulence genes. We used Brucella melitensis sequences in the NCBI Sequence Read Archive
Peter Rabinowitz, Bar Zilberman, Yair Motro, Marilyn C. Roberts, Alex Greninger, Lior Nesher, Shalom Ben-Shimol, Yael Yagel, Michael Gdalevich, Orly Sagi, Nadav Davidovitch, David Kornspan, Svetlana Bardenstein, Jacob Moran-Gilad   +13 more
doaj   +1 more source

Role of iron in regulation of virulence genes [PDF]

Clinical Microbiology Reviews, 1993
The abilities of bacterial pathogens to adapt to the environment within the host are essential to their virulence. Microorganisms have adapted to the iron limitation present in mammalian hosts by evolving diverse mechanisms for the assimilation of iron sufficient for growth.
C M, Litwin, S B, Calderwood
openaire   +2 more sources