体温对猫原位颈动脉体化学感受活动的影响。

Effects of body temperature on chemosensory activity of the cat carotid body in situ.

作者信息

Loyola H, Fadic R, Cardenas H, Larrain C, Zapata P

机构信息

Laboratory of Neurobiology, Catholic University of Chile, Santiago.

出版信息

Neurosci Lett. 1991 Nov 11;132(2):251-4. doi: 10.1016/0304-3940(91)90313-i.

DOI:10.1016/0304-3940(91)90313-i

PMID:1784429

Abstract

The effects of changes in body core temperature (TB) upon the frequency of chemosensory discharges (fx) from one carotid nerve were studied in pentobarbitone anesthetized cats. Raising TB from 35 to 40 degrees C increased fx in some cats, an effect more commonly seen after contralateral carotid neurotomy. In other animals, the simultaneously increased alveolar ventilation counteracted the above effect. A multiple correlation analysis of global data showed predicted increases in fx in response to raising TB at different CO2 levels.

摘要

在戊巴比妥麻醉的猫身上，研究了体核温度（TB）变化对一侧颈动脉神经化学感觉放电频率（fx）的影响。将TB从35℃提高到40℃会使一些猫的fx增加，这种效应在对侧颈动脉神经切断术后更常见。在其他动物中，同时增加的肺泡通气抵消了上述效应。对整体数据的多元相关分析表明，在不同二氧化碳水平下，随着TB升高，fx会出现预测性增加。