Staphylococcal superantigens and T cell expansions in Wegener's granulomatosis
نویسندگان
چکیده
منابع مشابه
ENT manifestations of Wegeners granulomatosis.
Wegeners granulomatosis is a necrotizing granulomatous vasculitis with multisystemic involvement. We present two cases of Wegener's presenting with otological manifestations as the first symptom. These symptoms are subtle and diagnosis may be easily overlooked. Hence a high index of suspicion is required. Early diagnosis and treatment goes a long way in improving the outcomes and in preventing ...
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Staphylococcal enterotoxins are a family of structurally related proteins that are produced by Staphylococcus aureus. In addition to their role in the pathogenicity of food poisoning, these microbial superantigens have profound effects on the immune system, which makes them useful tools for understanding its mechanism of action. These molecules (24-30 kDa) are highly hydrophilic and exhibit low...
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Background: The presence of anti-neutrophil cytoplasmic antibodies (ANCA) in Wegeners granulomatosis (WG), implicate the neutrophil as a key effector cell. Previous studies have reported elevated neutrophil counts in the lung although the determinants of neutrophil chemotaxis in the WG lung are unknown. Methods: BALF cell counts, myeloperoxidase (MPO) and chemokines were measured in 27 patient...
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Superantigens (SAgs) are a family of potent immunostimulatory exotoxins known to be produced by only a few bacterial pathogens, including Staphylococcus aureus. More than 20 distinct SAgs have been characterized from different S. aureus strains and at least 80% of clinical strains harbor at least one SAg gene, although most strains encode many. SAgs have been classically associated with food po...
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Staphylococcus aureus and group A Streptococcus secrete a collection of toxins called superantigens (SAgs), so-called because they stimulate a large fraction of an individual's T cells. One consequence of this hyperactivity is massive cytokine release leading to severe tissue inflammation and, in some cases, systemic organ failure and death. The molecular basis of action involves the binding of...
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ژورنال
عنوان ژورنال: Clinical & Experimental Immunology
سال: 2003
ISSN: 0009-9104
DOI: 10.1046/j.1365-2249.2003.02157.x