钙ATP酶在豚鼠过敏性哮喘发病过程中的作用

The Role of Ca2+-ATPase in the Pathogenesis of Allergic Asthma inGuinea Pigs

  • 摘要: 本实验给致敏豚鼠吸入卵蛋白建立速发型过敏性哮喘的动物模型,观察了呼吸系总阻抗(Zrs)及豚鼠肺组织钙ATP酶(Ca2+-ATPase)活性的变化以及654-2,异搏定对二者的影响。结果表明哮喘组Zrs明显高于正常组(P<0.01),肺组织Ca2+-ATPase活性明显低于正常组(P<0.01),654-2有增Ca2+-ATPase活性的作用。说明在过敏性哮喘的发病过程中Ca2+-ATPase活性下降是其病理生理变化的一个重要因素,细胞内钙浓度升高可能与此有关。

     

    Abstract: The immeditate-type of allergic asthma animal model was established in sensitized guinea pigs by inhalation with ovalbumin. Respiratory impedance(Zrs),activity of Ca2+-ATPase in lung tissue,effect of anisodamine (654-2) and verapamil on them were observed,The results sho-wed that Zrs in asthma group was increased than that in normal group (P<0.01),that activity of Ca2+-ATPase in lung tissue of asthma group was lower than that of normal group (P<0.01).The results suggested that decrease of Ca2+-ATPase activity in lung tissue may be an important factor in the pathogenesis of the allergic asthma. The increase of intracellular Ca2+may relate to decrease of Ga2+-ATPase activity.Anisodamine can increase Ca2+-ATPase activity.Verapamil has no effect on Ca2+-ATPase activity.

     

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