Endogenous angiotensin II in the NTS contributes to sympathetic activation in rats with aortocaval shunt.
Endogenous angiotensin II in the NTS contributes to sympathetic activation in rats with aortocaval shunt.
复制标题
NTS 中的内源性血管紧张素 II 有助于主动脉腔分流大鼠的交感神经激活。
DOI:
--
复制
发表时间:
2001
期刊:
影响因子:
--
通讯作者:
Akira Takeshita
中科院分区:
文献类型:
--
作者:
H. Shigematsu;Yoshitaka Hirooka;K. Eshima;M. Shihara;Tatsuya Tagawa;Akira Takeshita
Recent studies have suggested that the central nervous system is responsible for activation of sympathetic nerve activity (SNA) and the renin-angiotensin system in heart failure (HF). The aim of this study was to determine whether activation of the renin-angiotensin system within the nucleus of the solitary tract (NTS) plays a role in enhanced SNA in HF. High-output HF was induced by an aortocaval (A-V) shunt with some modifications in the rat. These rats exhibited a left ventricular dilatation and hemodynamic signs of high-output HF. Urinary catecholamine excretion and maximal renal SNA (RSNA) were greater in the A-V shunted rats than in the control rats. Microinjection of an angiotensin II type 1-receptor antagonist, CV11974, into the NTS was performed. The arterial pressure and RSNA were reduced by CV11974 to a greater degree in the A-V shunted rats than in the control rats. The expression of angiotensin-converting enzyme mRNA in the medulla was greater in the A-V shunted rats than in the control rats. These results suggest that activation of the renin-angiotensin system within the NTS contributes to an enhanced SNA in this model.
登录
查看更多内容
影响因子:
4.1
作者:
Lind,RW;Swanson,LW;Ganten,D
通讯作者:
Ganten,D
DOI:
10.1152/jappl.1994.77.6.2907
发表时间:
1994
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
作者:
Huang,M;LeBlanc,MH;Hester,RL
通讯作者:
Hester,RL
DOI:
10.1152/ajpregu.1996.271.1.r303
发表时间:
1996
期刊:
The American journal of physiology
影响因子:
--
作者:
Murakami,H;Liu,JL;Zucker,IH
通讯作者:
Zucker,IH
DOI:
10.1152/ajpregu.1998.275.5.r1611
发表时间:
1998-11-01
影响因子:
2.8
作者:
Matsumura, K;Averill, DB;Ferrario, CM
通讯作者:
Ferrario, CM
DOI:
10.2169/internalmedicine.37.112
发表时间:
1998
期刊:
Internal medicine (Tokyo, Japan)
影响因子:
--
作者:
Middlekauff,HR;Mark,AL
通讯作者:
Mark,AL