Effects of antihypertensive agents on baroreceptor function in early hypertensive rats.
Effects of antihypertensive agents on baroreceptor function in early hypertensive rats.
复制标题
抗高血压药物对早期高血压大鼠压力感受器功能的影响。
DOI:
10.1161/01.hyp.24.6.808
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发表时间:
1994
期刊:
影响因子:
8.3
通讯作者:
T. Saruta
中科院分区:
文献类型:
--
作者:
M. Ichikawa;Hiromichi Suzuki;K. Kumagai;M. Ryuzaki;H. Kumagai;M. Jimbo;M. Nishizawa;T. Saruta
To investigate the effects of antihypertensive treatment with four currently used agents (trichlormethiazide, atenolol, nicardipine, and enalapril) on the arterial baroreceptor function at the early phase of hypertension, we administered the agents to spontaneously hypertensive rats and Wistar-Kyoto rats from 8 to 10 weeks of age and examined the aortic nerve activity function. In untreated spontaneously hypertensive rats, the relation between the arterial pressure and aortic nerve activity was shifted to the right, that is, to a higher pressure level (threshold pressure, 90 +/- 3 versus 76 +/- 1 mm Hg, P < .05), and the maximum gain which was obtained by logistic function analysis was depressed (1.55 +/- 0.08% versus 2.18 +/- 0.13% maximum/mm Hg, P < .01) as compared with untreated Wistar-Kyoto rats. An equivalent decrease in arterial pressure with each of the four agents (-20 +/- 1 mm Hg, P < .01) produced a leftward shift of the arterial pressure-aortic nerve activity relation to a similar extent (threshold pressure, 77 +/- 1 mm Hg, P < .05) in spontaneously hypertensive rats. In addition, treatment with the four agents equally augmented the maximum gain in spontaneously hypertensive rats (2.13 +/- 0.09% maximum/mm Hg, P < .05). The antihypertensive agents affected neither the blood pressure nor the aortic nerve activity in Wistar-Kyoto rats. These findings suggest that antihypertensive treatment with the four classes of agents equally enhances the arterial baroreceptor function through blood pressure reduction but not through specific depressor mechanisms at the early stage of hypertension.
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DOI:
10.1152/ajpheart.1993.265.4.h1275
发表时间:
1993-10
期刊:
The American journal of physiology
影响因子:
--
作者:
Virginia L. Brooks;K. Ell;R. M. Wright
通讯作者:
Virginia L. Brooks;K. Ell;R. M. Wright
DOI:
--
发表时间:
1986
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Kunze,DL;Andresen,MC;Torres,LA
通讯作者:
Torres,LA
影响因子:
20.1
作者:
Yang,MY;Andresen,MC
通讯作者:
Andresen,MC
DOI:
10.1161/01.hyp.13.1.63
发表时间:
1989
期刊:
Hypertension (Dallas, Tex. : 1979)
影响因子:
--
作者:
Cheng,SW;Swords,BH;Kirk,KA;Berecek,KH
通讯作者:
Berecek,KH
影响因子:
20.1
作者:
Owens,GK
通讯作者:
Owens,GK