Sino-aortic denervation augments the increase in blood pressure seen during paradoxical sleep in the rat
Authors: Sei, H.; Morita, Y.; Tsunooka, K.; Morita, H.
Source: Journal of Sleep Research, Volume 8, Number 1, 1 March 1999 , pp. 45-50(6)
Using a computer assisted telemetric system, we have re-examined the effect of sino-aortic denervation (SAD) on the changes in arterial blood pressure (AP) and heart rate (HR) during sleep in the rat suitably recovered from the operation. Eight 1 hourly polygraphic recordings were performed 4 weeks after the initial SAD surgery. In the SAD rats, the increase in AP during paradoxical sleep (PS) was much larger than that in sham-operated rats. HR in the SAD rats increased on-going from slow-wave sleep to PS, but it showed no change in sham-operated rats. The present study suggests that chronic SAD causes the enhanced AP increase during PS concomitantly with the persistent hypertension and tachycardia across sleep-wake states.
Document Type: Research Article
Publication date: March 1, 1999