【摘要】 采用透射电镜对平原实验兔狗进入高原和高原羊移居平原的肾ATP_ase活性变化进行对比观察。结果提示:未迁之前的平原与高原动物肾ATP_ase活性处于相似水平,这说明生物在长期演化过程中,所获得的对环境变化的一种适应能力。平原动物进入高原后的翌日肾ATP_ase活性处于被抑制状态,随海拔增高,渐趋严重,这表明急性高原低氧可致肾小管重吸收功能低下,它们进入高原第7天肾ATP_ase活性得到部分恢复。高原动物移居平原1月,肾ATP_ase活性与平原动物的水平相似,45天后它们又重返高原的第10天,肾ATP_ase活性仍降低。因此动物处于不同海拔地区,机体通过高灵敏的自我调节,才能保持机体的动态平衡。更多还原

【Abstract】 The electron microscopic observation on the changes of renal ATPase inanimals at low and high altitudes showed that the activity of renal ATPase in animalsat plain and plateau was similar. The activity of renal ATPase in animals from lowlandto highland was suppressed,but it could be recovered gradully after 7 days. The activityof renal ATPase in animals from high altitude to low altitude was similar to the animalsat plain after one month. It indicated that the organism had the ability of maintainingits dynamic balance at different altitudes.更多还原