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Degranulation of eosinophils from pollen-atopic patients with asthma is increased during pollen season
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Gastro)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Inflammation)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Respiratory Medicine and Allergology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Respiratory Medicine and Allergology.
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1992 (English)In: Journal of Allergy and Clinical Immunology, ISSN 0091-6749, E-ISSN 1097-6825, Vol. 89, no 1 Pt 1, 131-139 p.Article in journal (Refereed) Published
Abstract [en]

The secretion of granule proteins from eosinophils and neutrophils was studied in isolated cells, obtained from 11 pollen-atopic patients with asthma, twice during and twice outside pollen season. Granulocytes were stimulated with serum-opsonized Sephadex particles, and the released amount of eosinophil cationic protein (ECP), eosinophil protein X (EPX), and myeloperoxidase (MPO) were measured by means of specific radioimmunoassay (RIA). Eosinophils from the pollen-atopic patients obtained during pollen season released significantly more (p less than 0.02) ECP and EPX than cells from the same patients obtained before pollen season. The released amount of ECP and EPX was correlated (r = 0.54; p less than 0.003) to the total pollen count. The release of MPO from neutrophils was only raised (p less than 0.01) at the end of the pollen season. Serum concentrations of ECP and EPX and blood eosinophil counts were significantly raised (p less than 0.002, p less than 0.001, and p less than 0.009, respectively) before pollen season and increased further at the end of the pollen season. There were no changes in lung function during pollen season and consequently no discernible relationships to eosinophil and neutrophil degranulation. We conclude that eosinophils and, to some extent, neutrophils from birch pollen-atopic subjects have an increased propensity to secrete their granule proteins during a pollen season. We suggest that these cells have been primed as a consequence of allergen exposure.

Place, publisher, year, edition, pages
1992. Vol. 89, no 1 Pt 1, 131-139 p.
Keyword [en]
Adolescent, Adult, Asthma/*blood/therapy, Blood Proteins/analysis, Cell Degranulation, Eosinophil Granule Proteins, Eosinophils/*physiology, Female, Humans, Hypersensitivity/*blood, Interleukin-5/physiology, Leukocyte Count, Male, Middle Aged, Neutrophils/physiology, Peroxidase/analysis, Pollen/*immunology, Research Support; Non-U.S. Gov't, Ribonucleases
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-74323PubMedID: 1309840OAI: oai:DiVA.org:uu-74323DiVA: diva2:102233
Available from: 2005-09-21 Created: 2005-09-21 Last updated: 2011-11-28Bibliographically approved

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Carlson, MarieHåkansson, LenaKämpe, MaryStålenheim, GunnemarPeterson, ChristerVenge, Per

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