The Effect of Glucocorticosteroids on Eosinophil Apoptosis Primed by Cultured Nasal Polyp Epithelial Cell Supernatant / 대한이비인후과학회지
Korean Journal of Otolaryngology - Head and Neck Surgery
;
: 1196-1201, 2000.
Article
in Korean
| WPRIM
| ID: wpr-653632
ABSTRACT
BACKGROUND AND OBJECTIVES:
Eosinophil infiltration into inflammatory site is a characteristic histological finding in patients with allergic rhinitis, bronchial asthma, and nasal polyps. The regulation of eosinophil survival and apoptosis may play a major role in tissue eosinophilia, and glucocorticosteroids (GCs) have been used therapeutically for nasal polyps. The purpose of this study is to investigate the effect of commonly used GCs on eosinophil survival and apoptosis primed by nasal polyp epithelial cells. MATERIALS ANDMETHODS:
Peripheral blood eosinophils were incubated in increasing concentrations (10-10M) to GCs (triamcinolone, dexamethasone, budesonide, and fluticasone propionate) from January, 1990 to December, 1999 prior to the addition of human nasal polyp epithelial cell conditioned media (HECM). Eosinophil viability was measured with a MTS assay and apoptosis was analyzed with the caspase-3 staining.RESULTS:
GCs suppressed the HECM induced prolongation of eosinophil survival with apoptotic change of cells from 2 days after incubation. Fluticasone propionate showed the strongest effects and triamcinolone showed the weakest effects.CONCLUSION:
GCs may diminish eosinophilic infiltration into nasal polyp by decreasing eosinophil viability, and abrogate the promoting effect of nasal epithelial cells.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Asthma
/
Dexamethasone
/
Triamcinolone
/
Rhinitis
/
Nasal Polyps
/
Culture Media, Conditioned
/
Apoptosis
/
Budesonide
/
Diethylpropion
/
Eosinophilia
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Otolaryngology - Head and Neck Surgery
Year:
2000
Type:
Article
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