Increased Releasability of Skin Mast Cells after Exercise in Patients with Exercise-induced Asthma.
10.3346/jkms.2004.19.5.724
- Author:
Inseon S CHOI
1
;
Youngil I KOH
;
Se Woong CHUNG
;
Ho LIM
Author Information
1. Department of Allergy, Chonnam National University Medical School, Research Institute of Medical Science, Gwangju, Korea. ischoi@chonnam.chonnam.ac.kr
- Publication Type:Original Article
- Keywords:
Asthma, Exercise-Induced;
Histamine;
Morphine;
Mast Cells
- MeSH:
Adolescent;
Adult;
Analgesics, Opioid/diagnostic use;
Asthma/*immunology/physiopathology;
*Exercise;
Histamine/diagnostic use;
Humans;
Male;
Mast Cells/drug effects/*immunology;
Morphine/diagnostic use;
Skin/cytology/*immunology;
Skin Tests
- From:Journal of Korean Medical Science
2004;19(5):724-728
- CountryRepublic of Korea
- Language:English
-
Abstract:
The role of lung mast cells in exercise-induced asthma (EIA) is controversial. To investigate whether the skin mast cell releasability is increased after exercise in EIA, 49 young atopic men with or without asthma took part in a free-running test for 6 min and were given skin prick tests using morphine, a mast cell secretagogue, before and after the exercise. The mean diameters of the wheal induced by morphine in patients with EIA were not significantly different from those in patients without EIA before exercise, although the baseline lung function was significantly lower and the airway hyperresponsiveness, the peripheral blood eosinophil count, and the size of the wheal in response to Dermatophagoides pteronyssinus were significantly higher in patients with EIA. However, the differences of the morphine-induced wheal diameter between patients with EIA and those without EIA became significant at 120 min after exercise (p<0.05), while the responses to histamine were not significantly different. These results suggest that exercise increases the releasability of skin mast cells in EIA patients whose asthma/allergy are relatively severe.
