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
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喷气应激对自发性高血压大鼠肾血流的影响

DOI:
--
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发表时间:
1997
影响因子:
2.3
通讯作者:
K. Fukiyama
K. Fukiyama
中科院分区:
医学4区
文献类型:
--
作者:
S. Takishita;H. Muratani;H. Teruya;S. Sesoko;K. Fukiyama

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背景应激性心理刺激可引起肾交感神经活动(RSNA)增加和肾血流量减少。很少直接分析RSNA和肾血流量之间的关系,在心理刺激的应用程序已进行记录这2个测量同时在同一个人animals.MethodsWe同时测量RSNA和肾血流量作为多普勒频移在清醒,不受约束,自发性高血压大鼠。结果空气喷射刺激使RSNA增加81%±15%(平均值±平均值的标准误差,n=10),平均动脉压(21±3 mm Hg),肾血管阻力(37%±6%),肾血流量减少(−15%±2%)。RSNA的百分比变化与平均动脉压的变化(r= 0.934,P <0.001)和肾血管阻力的百分比变化(r=0.912)呈正相关,与肾血流量的百分比变化呈负相关(r=-0.804)。去神经支配的肾神经防止肾血流量减少,响应于air-jet stress.ConclusionsA减少肾血流量响应于短期的空气喷射stress.A引起的主要是自发性高血压大鼠的神经机制。通过空气喷射刺激增强RSNA对肾血管床产生强有力的收缩作用,导致肾血流量减少。
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.
肾神经的功能。
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
肾脏对应激环境刺激的反应。
DOI: --
发表时间: 1985
期刊: Federation proceedings
影响因子: --
作者:
Koepke,JP
通讯作者: Koepke,JP
衰老并不伴随着交感神经对喷气压力的过度反应。
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
高钠摄入可增强自发性高血压大鼠的肾神经和抗尿钠应激反应。
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