Role of spinal NK1 receptors in cardiovascular responses to chemical stimulation of the gallbladder.

Role of spinal NK1 receptors in cardiovascular responses to chemical stimulation of the gallbladder.
复制标题

脊髓 NK1 受体在心血管对胆囊化学刺激的反应中的作用。

DOI:
10.1152/ajpheart.1995.268.2.h526
复制
发表时间:
1995
期刊:
The American journal of physiology.
影响因子:
--
通讯作者:
Longhurst,JC
Longhurst,JC
中科院分区:
--
文献类型:
--
作者:
Pan,HL;Bonham,AC;Longhurst,JC

文献摘要

参考文献

被引文献

相似文献

本研究考察了P物质(SP)作为一种感觉神经递质在缓激肽作用于胆囊后心血管反应中的作用。实验在麻醉的猫身上进行,在T5-T6水平横断交感神经链,将鞘内导管的尖端定位在T6- t7,以限制T6和L2之间的注射。在鞘内注射[D-Pro2,D-Phe7,D-Trp9]SP(100-200微克,NK1/NK2受体拮抗剂),CP-99,994(50-100微克,选择性NK1拮抗剂),man -10,376(100-500微克,选择性NK2拮抗剂)或载体前后,将缓激素(10微克/ml)施用于胆囊。鞘内注射NK1而非NK2拮抗剂可显著降低平均动脉压、心率和最大左室压变化率的升高,分别为28 +/- 2 mmHg(33 +/- 4%)、4 +/- 1次/分钟(42 +/- 5%)和497 +/- 46 mmHg/s(36 +/- 4%)。鞘内注射NK1或NK1/NK2拮抗剂对电刺激髓质吻侧腹侧引起的心血管反应没有影响。这些数据表明,内源性SP作为一种感觉神经递质,通过其对脊髓NK1受体的作用,参与了胆囊化学刺激引起的兴奋性心血管反射。
The present study examined the role of substance P (SP) as a sensory neurotransmitter in cardiovascular responses to bradykinin applied on the gallbladder. Experiments were performed in anesthetized cats in which sympathetic chains were transected at the T5-T6 level, and the tip of the intrathecal catheter was positioned at T6-T7 to limit the injectate between T6 and L2. Bradykinin (10 micrograms/ml) was applied onto the gallbladder before and after intrathecal injection of [D-Pro2,D-Phe7,D-Trp9]SP (100–200 micrograms, NK1/NK2-receptor antagonist), CP-99,994 (50–100 micrograms, selective NK1 antagonist), MEN-10,376 (100–500 micrograms, selective NK2 antagonist), or vehicle. Intrathecal injection of NK1 but not NK2 antagonist significantly reduced increases in mean arterial pressure, heart rate, and maximal rate of left ventricular pressure change by 28 +/- 2 mmHg (33 +/- 4%), 4 +/- 1 beats/min (42 +/- 5%), and 497 +/- 46 mmHg/s (36 +/- 4%), respectively. Intrathecal injection of NK1 or NK1/NK2 antagonist had no effect on cardiovascular responses evoked by electrical stimulation in the rostral ventral lateral medulla. These data suggest that endogenous SP, acting as a sensory neurotransmitter, is involved in the excitatory cardiovascular reflex caused by chemical stimulation of the gallbladder through its action on NK1 receptors in the spinal cord.
在整个催化循环中,附着在肌浆网 Ca2-ATP 酶特定硫醇上的 N-碘乙酰基-N-(5-磺基-1-萘基)乙二胺附近的构象变化。
DOI: 10.1016/s0021-9258(18)68980-x
发表时间: 1988
期刊: The Journal of biological chemistry
影响因子: --
作者:
M. Obara;H. Suzuki;T. Kanazawa
通讯作者: T. Kanazawa
DOI: 10.1016/0005-2736(88)90118-6
发表时间: 1988-02-08
期刊: BIOCHIMICA ET BIOPHYSICA ACTA
影响因子: --
作者:
CHATTOPADHYAY, A;LONDON, E
通讯作者: LONDON, E
DOI: --
发表时间: 1974
影响因子: 4.8
作者:
M. Kirchberger;M. Tada;A. Katz
通讯作者: A. Katz
腺苷 3:5-单磷酸依赖性蛋白激酶对从心脏和慢速和快速收缩骨骼肌中分离出的肌浆网的影响。
DOI: --
发表时间: 1976
影响因子: 4.8
作者:
M. Kirchberger;M. Tada
通讯作者: M. Tada
从肌浆网中分离出的 ATP 酶上的转运和抑制性 Ca2 结合位点。
DOI: --
发表时间: 1975
影响因子: 4.8
作者:
N. Ikemoto
通讯作者: N. Ikemoto