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Background
We previously demonstrated in mice that airway eosinophils traffic from the airway lumen into lung‐draining paratracheal lymph nodes. However, mechanisms whereby eosinophils traverse from the lungs and home to paratracheal lymph nodes remain unclear. We investigated roles of cysteinyl leukotrienes in mediating eosinophil trafficking from lungs to paratracheal lymph nodes.
Methods
The...
Several lines of evidence suggest that deficiency of eosinophils is not associated with any characteristic abnormality. Patients lacking eosinophils, in the setting of immunodeficiency or as a consequence of IgG‐mediated eosinophil precursor destruction, do not display any distinguishing abnormalities related to eosinophil reduction. The observation that eosinophil‐deficient mice do not display any...
BackgroundEosinophils have the capacity to secrete varied cytotoxic proteins. Among the proteins are the eosinophil‐associated RNases (EARs): the human eosinophil‐derived neurotoxin and eosinophilic cationic protein, and their murine ortholog EARs, which have been shown to be involved in host defense, tissue remodeling, and immunity regulation. However, the signal transduction that regulates EARs...
Because the induction of new lipid body formation in leukocytes correlates with and likely contributes to their enhanced 'primed' prostaglandin and leukotriene formation, we evaluated two selective cyclooxygenase (COX)-2 inhibitors. Three types of stimuli, cis -unsaturated fatty acids, platelet activating factor and protein kinase C activators, stimulate lipid body formation. NS-398 (0.1-10 μM), but...
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