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Updated: Jul 7, 2026
12:23
Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Cellular inflammatory responses in human allergic skin reactions
The Journal of Allergy and Clinical Immunology
|August 1, 1987
Summary
Inflammation in allergic reactions involves a significant influx of neutrophils to pollen antigen sites. These cells, while phagocytic, show altered migration patterns compared to peripheral blood neutrophils.
Area of Science:
- Immunology
- Dermatology
- Allergy Research
Background:
- Inflammation plays a key role in allergic reactions.
- Understanding the behavior of inflammatory cells at antigen sites is crucial for allergy research.
Purpose of the Study:
- To investigate the characteristics and function of inflammatory cells at sites of ongoing allergic reactions to pollen antigens.
- To compare these cells with peripheral blood neutrophils.
Main Methods:
- Utilized a skin chamber model in 15 atopic subjects.
- Challenged paired skin blister sites with pollen antigen or buffer for 5 hours.
- Analyzed recovered cells using phase-contrast microscopy and functional assays.
Main Results:
- Antigen sites yielded 10 times more cells than buffer sites, predominantly neutrophils (>97%).
- Recovered neutrophils showed significant polarization (82-95%) compared to blood neutrophils (0-1.5%).
- Antigen site neutrophils exhibited decreased migration response to platelet-activating factor.
Conclusions:
- The study highlights neutrophil recruitment and activation in pollen-induced allergic skin reactions.
- Neutrophils at allergic reaction sites display distinct functional properties compared to circulating neutrophils.
- These findings contribute to understanding the inflammatory mechanisms in allergic responses.
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