Results 11 to 20 of about 63,337 (255)

Antigenic Variation in Vector-Borne Pathogens

open access: yesEmerging Infectious Diseases, 2000
Several pathogens of humans and domestic animals depend on hematophagous arthropods to transmit them from one vertebrate reservoir host to another and maintain them in an environment.
Alan G. Barbour, Blanca I. Restrepo
doaj   +1 more source

Mini-review: Strategies for Variation and Evolution of Bacterial Antigens

open access: yesComputational and Structural Biotechnology Journal, 2015
Across the eubacteria, antigenic variation has emerged as a strategy to evade host immunity. However, phenotypic variation in some of these antigens also allows the bacteria to exploit variable host niches as well.
Janet Foley
doaj   +1 more source

PacBio Amplicon Sequencing Method To Measure Pilin Antigenic Variation Frequencies of Neisseria gonorrhoeae

open access: yesmSphere, 2019
Gene diversification is a common mechanism pathogens use to alter surface structures to aid in immune avoidance. Neisseria gonorrhoeae uses a gene conversion-based diversification system to alter the primary sequence of the gene encoding the major ...
Egon A. Ozer   +5 more
doaj   +1 more source

Cross-Reactive Antibody Responses against Nonpoliovirus Enteroviruses

open access: yesmBio, 2022
Enteroviruses are among the most common human viral pathogens. Infection with members of a subgroup of viruses within this genus, the nonpoliovirus enteroviruses (NPEVs), can result in a broad spectrum of serious illnesses, including acute flaccid ...
Amy B. Rosenfeld   +5 more
doaj   +1 more source

Mosaic VSGs and the scale of Trypanosoma brucei antigenic variation.

open access: yesPLoS Pathogens, 2013
A main determinant of prolonged Trypanosoma brucei infection and transmission and success of the parasite is the interplay between host acquired immunity and antigenic variation of the parasite variant surface glycoprotein (VSG) coat.
James P J Hall   +2 more
doaj   +1 more source

Antigenic Variation in Streptococcus pneumoniae PspC Promotes Immune Escape in the Presence of Variant-Specific Immunity

open access: yesmBio, 2018
Genomic analysis reveals extensive sequence variation and hot spots of recombination in surface proteins of Streptococcus pneumoniae. While this phenomenon is commonly attributed to diversifying selection by host immune responses, there is little ...
M. Georgieva   +4 more
doaj   +1 more source

Dengue genetic divergence generates within-serotype antigenic variation, but serotypes dominate evolutionary dynamics

open access: yeseLife, 2019
Dengue virus (DENV) exists as four genetically distinct serotypes, each of which is historically assumed to be antigenically uniform. Recent analyses suggest that antigenic heterogeneity may exist within each serotype, but its source, extent and impact ...
Sidney M Bell   +2 more
doaj   +1 more source

Phase and Antigenic Variation In Mycoplasmas

open access: yesFuture Microbiology, 2010
With their reduced genome bound by a single membrane, bacteria of the Mycoplasma species represent some of the simplest autonomous life forms. Yet, these minute prokaryotes are able to establish persistent infection in a wide range of hosts, even in the presence of a specific immune response.
Citti, Christine   +2 more
openaire   +5 more sources

Evolution of Host Specificity by Malaria Parasites through Altered Mechanisms Controlling Genome Maintenance

open access: yesmBio, 2020
The protozoan parasites that cause malaria infect a wide variety of vertebrate hosts, including birds, reptiles, and mammals, and the evolutionary pressures inherent to the host-parasite relationship have profoundly shaped the genomes of both host and ...
Michelle C. Siao   +4 more
doaj   +1 more source

Mapping replication dynamics in Trypanosoma brucei reveals a link with telomere transcription and antigenic variation

open access: yeseLife, 2016
Survival of Trypanosoma brucei depends upon switches in its protective Variant Surface Glycoprotein (VSG) coat by antigenic variation. VSG switching occurs by frequent homologous recombination, which is thought to require locus-specific initiation. Here,
Rebecca Devlin   +8 more
doaj   +1 more source

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