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Fluvastatin And Microrna-146a Alter Interleukin-33 Mediated Mast Cell Functions., Marcela Taruselli
Fluvastatin And Microrna-146a Alter Interleukin-33 Mediated Mast Cell Functions., Marcela Taruselli
Theses and Dissertations
Mast cells are tissue-resident immune cells known as effector cells for the innate and adaptive immune systems. Mast cells contribute to host defenses against parasites such as large roundworm parasites, bacterial pathogens, and toxins, and participate in wound healing, but they are mostly known for their role in allergic diseases. It has been well established that during allergic diseases, mast cells are stimulated by IgE cross-linkage to release proinflammatory mediators. However, a newly discovered cytokine, IL-33 has also been implicated in allergic disease. Recently, IL-33 has been implicated as a driver of several Type I sensitivities and previous studies have …
Mast Cell Activation By Diverse Stimuli Can Be Suppressed By Steroid Therapy And Targeting The Fyn-Stat5b Cascade, Anuya Paranjape
Mast Cell Activation By Diverse Stimuli Can Be Suppressed By Steroid Therapy And Targeting The Fyn-Stat5b Cascade, Anuya Paranjape
Theses and Dissertations
Mast cells are critical effectors of allergic disease that can be activated by numerous stimuli. We have examined mast cell control by the inflammatory cytokine, IL-33, as well as IgG. In the first study reported here, we found that the synthetic glucocorticoid, dexamethasone, potently and rapidly suppressed IL-33-induced cytokine production from murine bone marrow–derived and peritoneal mast cells, as well as human mast cells. Dexamethasone also antagonized IL-33-mediated enhancement of IgE-induced cytokine production and migration. Although dexamethasone had no effect on IL-33-induced phosphorylation of MAP kinases or NFκB p65 subunit, it antagonized AP-1 and NFκB-mediated transcriptional activity. Finally, intraperitoneal administration …