Tew KD, Monks A, Barone L, Rosser D, Akerman G, Montali JA et al
These activated eosinophils significantly correlated with tissue inflammation severity and were associated with enhanced production of reactive oxygen species, indicated by nitroblue tetrazolium (NBT) reducing activity in severely inflamed mucosa ( Interestingly, a recent study revealed that PD-L1 + eosinophilsidentified as active eosinophils with a T cell regulatory function via single-cell transcriptomics in a mouse model of colitis (more on this later)exhibited significant abundance in PD-L1 samples from patients with ulcerative colitis (UC) and Crohn's disease compared to healthy controls ( 3.4 Eosinophil-derived cell free granule proteins in tissue and bodily fluids Activated eosinophils release an array of toxic granule proteinsnotably eosinophil cationic protein (ECP), eosinophil-derived neurotoxin (EDN), major basic protein (MBP), and eosinophil peroxidase (EPX/EPO)which can be detected in tissues, blood, stool, or other fluids in a cell-free form
doi: 10.3389/fphar.2014.00196 Received 05 July 2014 Accepted 06 August 2014 Published 26 August 2014 Volume 5 - 2014 Edited by Alfonso Pompella, Universit di Pisa, Italy Reviewed by Anastassios Papageorgiou, University of Turku, Finland
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