[Role of gamma delta T cells in the prevention and treatment of allergic bronchial asthma by desensitization of allergen nebulization].

Aim: To explore the role of gammadeltaT cells in the pathogenesis of allergic bronchial asthma.

Methods: Forty patients with Der.p and Der f allergy and partly-controlled asthma were involved in a random study. Besides the fact that all patients were treated with same basic treatment. Patients in group A were nebulized with 5 mL normal saline while group B with specific allergen twice a week for six months. The percentage of gammadeltaT cells in peripheral blood and induced sputum and the percentage of IL-4(+) and IFN-gamma(+) gammadeltaT cells were detected by flow cytometry(FCM) before and after treatment.

Results: The percentage of gammadeltaT cells in group B decreased after treatment, and the percentage of IFN-gamma(+) gammadeltaT cells in both peripheral blood and induced sputum increased significantly in group B than that in group A.

Conclusion: gammadeltaT cells, which may participate in the pathogenesis of bronchial asthma, may contribute to the prevention and treatment of bronchial asthma by desensitization of allergen nebulization.