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[皮下血管对温度下降的收缩反应]

[Contractile responses of subcutaneous vessels to drops in temperature].

作者信息

Danilova L I, Poleshchuk N K

出版信息

Fiziol Zh SSSR Im I M Sechenova. 1977 Apr;63(4):552-6.

PMID:881044
Abstract

In rabbits, application of ice-cold water to the ear lowers the skin temperature by 10.3 degrees C and, within 3-4 sec, the temperature in the subcutaneous vein by 4.3 degrees C. A stepwise cooling of isolated subcutaneous artery or vein causes their constriction, and warming dilates the vessels with maximal amplitude when the temperature is changed by 8-12 degrees C. Further cooling or warming diminishes the response. Optimal constrictory responses of subcutaneous vessels to a standard dose of norepinephrine were observed at 38-32 degrees C.

摘要

在兔子身上,将冰冷的水敷在耳朵上可使皮肤温度降低10.3摄氏度,并在3 - 4秒内使皮下静脉温度降低4.3摄氏度。对分离出的皮下动脉或静脉进行逐步冷却会导致其收缩,而升温则会使血管扩张,当温度变化8 - 12摄氏度时扩张幅度最大。进一步冷却或升温会减弱这种反应。在38 - 32摄氏度时观察到皮下血管对标准剂量去甲肾上腺素的最佳收缩反应。

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