[猫和大鼠压力感受器反射的比较研究]
[Comparative study of baroreceptor reflexes in cats and rats].
作者信息
Eremeev V S, Pliss M G, Tsyrlin V A, Shcherbin Iu I
出版信息
Fiziol Zh SSSR Im I M Sechenova. 1984 Dec;70(12):1673-7.
The sensitivity of baroreceptor reflexes, the intensity of heart rate changes, and the electrical activity of renal nerve were compared in acute and chronic experiments with changing activity of arterial baroreceptor afferents in rats and cats. Activation of the baroreceptor afferents was due to blood pressure elevations induced with phenylephrine, deceleration of electrical activity of renal nerve was induced by baroreceptor deafferentation. The sensitivity of baroreceptor reflexes, the absolute and relative acceleration of heart rate after baroreceptor deafferentation, as well as the intensity of renal nerve activity suppression were considerably higher in cats as compared with rats.
在大鼠和猫身上进行的急性和慢性实验中，通过改变动脉压力感受器传入神经的活动，比较了压力感受器反射的敏感性、心率变化的强度以及肾神经的电活动。压力感受器传入神经的激活是由于去氧肾上腺素引起的血压升高，肾神经电活动的减慢是由压力感受器传入神经切断所诱发的。与大鼠相比，猫的压力感受器反射敏感性、压力感受器传入神经切断后心率的绝对和相对加速以及肾神经活动抑制的强度要高得多。
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