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  • Title: [Inhalation of platelet-activating factor induced guinea pig airway hyperresponsiveness: role of eosinophils activation].
    Author: Wang C, Pu P, Wu G.
    Journal: Zhonghua Jie He He Hu Xi Za Zhi; 1995 Jun; 18(3):155-7, 190. PubMed ID: 8565083.
    Abstract:
    Exposure of guinea pigs to aerosols of 200 micrograms/ml platelet-activating factor 24 h later, airway hyperresponsiveness to histamine induced and number of eosinophils and hypodense eosinophils in bronchoalveolar lavage fluid (BALF) increased, comparing with the control group. The number of eosinophils in BALF was corelated with PC20 value in PAF-treated group (r = -0.62, P < 0.05). However, the percentage of hypodense eosinophil in BALF had closer relation to airway responsiveness (r = -0.84, P < 0.01). The content of peroxidase in hypodense eosinophils in BALF for guinea pigs treated by inhalation of PAF was lowered markedly than that in normodense eosinophil (P < 0.05). The result suggested that chemotaxis and activation of eosinophils by PAF might play an important role in airway hyperresponsiveness.
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