نتایج جستجو برای: immune causes
تعداد نتایج: 507834 فیلتر نتایج به سال:
Abstract Background: Community acquired pneumonia (CAP) is the main cause of mortality and morbidity world wide. Legionella pneumophila is identified as the fourth agent that causes CAP. The aim of this study was to define the prevalence of L. pneumophila among hospitalized children by culture, direct immune-fluorescence, (DFA) and PCR. Methods: In this study 210 sputum samples were collect...
Background: Human brucellosis is a zoonotic disease caused by Brucella melitensis, Brucella abortus, and Brucella suis. Brucella causes a chronic disease, which subverts the immune defense system of their hosts. In this study, the prevalence of an important Brucella virulence determinant, PrpA, which can modulate immune response, was determined in human isolates. Methods: Polymerase chain reac...
Animals undergoing external or internal challenge to their state of health mount a vigorous response including activation of both the innate and acquired immune systems. The acquired immune system leads eventually to the development of specific cellular and humoral immune responses but at the time of the initial challenge the survival of the host depends on the ability of the innate responses t...
To fight, flee or hide are the imperatives of long-term survival by an infectious microbe. Active immune suppression, induction of immune tolerance, phase and antigenic variation, intracellular seclusion, and incursion into immune privileged sites are examples of survival strategies of persistent pathogens. Here we critically review the supporting evidence for possible stratagems utilized by Bo...
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