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Eosinophil Activation Pathway
- Molecular classification
- Cellular signaling pathway, Immune pathway
01
Overview
The eosinophil activation pathway encompasses the molecular and cellular processes that lead to the activation of eosinophils, a type of granulocytic white blood cell involved in immune responses, particularly in allergic inflammation, parasitic infections, and certain autoimmune diseases. Eosinophil activation is characterized by changes in cell surface markers, degranulation (release of cytotoxic granule proteins), production of lipid mediators and cytokines, increased adhesion to endothelium, chemotaxis (migration), and enhanced survival.
02
Mechanism of action
Various, depending on the specific drug. Examples include: antibody-mediated neutralization of IL-5, antibody-mediated depletion of eosinophils, inhibition of leukotriene synthesis or action, suppression of inflammation.
03
Biological functions
Eosinophil maturationEosinophil recruitmentEosinophil primingEosinophil effector functionsImmune responseInflammation
04
Disease associations
AsthmaAllergyHypereosinophilic syndromesParasitic infectionsAutoimmune diseases
05
Safety considerations
Increased risk of infections (with broad immunosuppression)Injection site reactions (for antibody therapies)Potential for paradoxical eosinophilia (upon withdrawal of certain therapies)Varied efficacy depending on disease subtype and patient characteristics
06
Interacting drugs
Anti-IL-5 antibodies (e.g., mepolizumab, reslizumab)
4 more in the full profile.
07
Biomarkers
Blood eosinophil countSputum eosinophil countSerum IgE levelsIL-5 levelsEotaxin levelsMajor basic protein (MBP)Eosinophil peroxidase (EPO)
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