Effects of air-jet stress on renal blood flow in spontaneously hypertensive rats
Effects of air-jet stress on renal blood flow in spontaneously hypertensive rats
复制标题
喷气应激对自发性高血压大鼠肾血流的影响
DOI:
--
复制
发表时间:
1997
影响因子:
2.3
通讯作者:
K. Fukiyama
中科院分区:
文献类型:
--
作者:
S. Takishita;H. Muratani;H. Teruya;S. Sesoko;K. Fukiyama
BackgroundStressful psychological stimuli produce an increase in renal sympathetic nerve activity (RSNA) and a decrease in renal blood flow. Very few direct analyses of the relationship between RSNA and renal blood flow during the application of psychological stimuli have been conducted by recording these 2 measurements simultaneously in the same individual animals.MethodsWe simultaneously measured RSNA and renal blood flow as a Doppler shift in conscious, unrestrained, spontaneously hypertensive rats. The rats were stressed by directing a continuous air jet at their faces for 20 seconds.ResultsAir-jet stimulus increased RSNA 81%±15% (mean±standard error of the mean, n=10), mean arterial pressure (21±3 mm Hg), and renal vascular resistance (37%±6%), and decreased renal blood flow (−15%±2%). The percentage change in RSNA correlated positively with the change in mean arterial pressure (r=0.934,P<0.001) and percentage change in renal vascular resistance (r=0.912), and negatively with the percentage change in renal blood flow (r=−0.804). The denervation of renal nerves prevented renal blood flow from decreasing in response to air-jet stress.ConclusionsA reduction in renal blood flow in response to short-term air-jet stress is elicited mainly by neural mechanisms in spontaneously hypertensive rats. Enhancement of RSNA by air-jet stimulus exerts a potent constricting effect on the renal vascular bed, resulting in a reduction in renal blood flow.
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DOI:
--
发表时间:
1985
期刊:
The Physiologist
影响因子:
--
作者:
Koepke,JP;DiBona,GF
通讯作者:
DiBona,GF
DOI:
--
发表时间:
1985
期刊:
Federation proceedings
影响因子:
--
作者:
Koepke,JP
通讯作者:
Koepke,JP
DOI:
10.1152/ajpheart.1996.271.2.h768
发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
作者:
Stauss,HM;Morgan,DA;Anderson,KE;Massett,MP;Kregel,KC
通讯作者:
Kregel,KC
DOI:
--
发表时间:
1985
期刊:
Hypertension (Dallas, Tex. : 1979)
影响因子:
--
作者:
Koepke,JP;DiBona,GF
通讯作者:
DiBona,GF