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Brucella abortus induces the premature death of human neutrophils through the action of Its lipopolysaccharide
(PLoS Pathogens, 2015-05-06)
Most bacterial infections induce the activation of polymorphonuclear neutrophils (PMNs), enhance their microbicidal function, and promote the survival of these leukocytes for protracted periods of time. Brucella abortus ...
Neutrophils dampen adaptive immunity in Brucellosis
(American Society For Microbiology, 2019-04-23)
Brucella organisms are intracellular stealth pathogens of animals and humans. The bacteria overcome the assault of innate immunity at early stages of an infection. Removal of polymorphonuclear neutrophils (PMNs) at the ...
Neutrophils as Trojan Horse vehicles for Brucella abortus macrophage infection
(Universidad Nacional, Costa Rica, 2019-05-07)
Brucella abortus is a stealthy intracellular bacterial pathogen of animals and humans. This bacterium promotes the premature cell death of neutrophils (PMN) and resists the killing action of these leukocytes. B. abortus-infected ...
The lipopolysaccharide core of Brucella abortus acts as a shield against innate immunity recognition
(PLoS Pathogens, 2012-05-10)
Innate immunity recognizes bacterial molecules bearing pathogen-associated molecular patterns to launch inflammatory responses leading to the activation of adaptive immunity. However, the lipopolysaccharide (LPS) of the ...
Brucella abortus senses the intracellular environment through the BvrR/Bvrs two-component system, which allows B. abortus to adapt to its replicative nich
(American Society for Microbiology., 2018-01-16)
Brucella abortus is a facultative extracellular-intracellular pathogen belonging to a group of Alphaproteobacteria that establishes close interactions with animal cells. This bacterium enters host cells in a membrane-bound ...
The differential interaction of brucella and ochrobactrum with innate immunity reveals traits related to the evolution of stealthy pathogens
(PLOS ONE, 2009-06-16)
Background: During evolution, innate immunity has been tuned to recognize pathogen-associated molecular patterns. However, some a-Proteobacteria are stealthy intracellular pathogens not readily detected by this system. ...
Bacterial counts in spleen
(Bio-protocol, 2013-11-05)
Bacterial loads can be determined as colony forming units (CFU) at any point of the infection by culturing spleen homogenates on agar plates. This is a reliable method for comparing the kinetics of infection in various ...
Brucella abortus ornithine lipids are dispensable outer membrane components devoid of a marked pathogen-associated molecular pattern
(PLoS One, 2011-01-07)
The brucellae are a-Proteobacteria facultative intracellular parasites that cause an important zoonosis. These bacteria escape early detection by innate immunity, an ability associated to the absence of marked pathogen-associated ...
Reporte de caso clínico Primer diagnóstico de Rhodococcus equi confirmado, laboratorialmente, en un potrillo de Costa Rica
(Universidad Nacional, Costa Rica, 2020-03-09)
Neumonía por Rhodococcus equi es importante causa de morbilidad y mortalidad en potrillos de todo el
mundo. La prevalencia y/o virulencia de la bacteria es, aparentemente, baja en Costa Rica, pues nunca han
sido reportados ...
A Sinorhizobium meliloti and Agrobacterium tumefaciens ExoR ortholog is not crucial for Brucella abortus virulence
(PLOS ONE, 2021-08-13)
Brucella is a facultative extracellular-intracellular pathogen that belongs to the Alphaproteo-
bacteria class. Precise sensing of environmental changes and a proper response mediated
by a gene expression regulatory ...