Guanylyl cyclase mediates ANP-induced vasoconstriction of murine splenic vessels.
Guanylyl cyclase mediates ANP-induced vasoconstriction of murine splenic vessels.
复制标题
鸟苷酸环化酶介导 ANP 诱导的小鼠脾血管收缩。
DOI:
--
复制
发表时间:
2003
期刊:
影响因子:
--
通讯作者:
S. Kaufman
中科院分区:
文献类型:
--
作者:
P. Andrew;S. Kaufman
We have previously shown that ANP causes differential constriction of the splenic vasculature of the rat (veins greater than arteries), which may be inhibited by blocking the production of cGMP with A7195. In this paper, we report experiments done on vessels derived from guanylyl cyclase (GC)-A knockout mice. Small splenic arteries ( approximately 150-microm diameter) and veins ( approximately 250-microm diameter) were dissected from male GC-A-deficient 129sv mice or age-matched wild-type controls and mounted in a wire myograph. In the wild-type mice, ANP exhibited higher potency in the veins than in the arteries (EC(50) values wild-type mice: artery, 8 +/- 3 x 10(-9) M, n = 5 vs. vein, 6 +/- 4 x 10(-10) M, n = 5; P < 0.05). The concentration-response curve for ANP-induced vasoconstriction was also shifted leftward in denuded compared with intact arteries (EC(50) values: denuded artery: 5 +/- 3 x 10(-10) M, n = 5 vs. intact artery, 8 +/- 3 x 10(-9) M, n = 5; P < 0.05), i.e., the denuded vessels were more reactive. By contrast, ANP caused no significant change in tension from baseline in intact splenic arteries, intact splenic veins, or denuded splenic arteries derived from the GC-A-deficient mice, although these vessels did show normal concentration-dependent increases in tension to phenylephrine. We conclude that ANP causes vasoconstriction in the splenic vasculature by an endothelium-independent mechanism, mediated via guanylyl cyclase.
登录
查看更多内容
DOI:
10.1152/ajpcell.1998.274.5.c1199
发表时间:
1998
期刊:
The American journal of physiology
影响因子:
--
作者:
Murthy,KS;Makhlouf,GM
通讯作者:
Makhlouf,GM
影响因子:
21.1
作者:
Kimberly A. Lucas;G. Pitari;G. Pitari;S. Kazerounian;I. Ruiz-Stewart;Jason Y. Park;S. Schulz;K. Chepenik;S. Waldman
通讯作者:
Kimberly A. Lucas;G. Pitari;G. Pitari;S. Kazerounian;I. Ruiz-Stewart;Jason Y. Park;S. Schulz;K. Chepenik;S. Waldman
DOI:
10.1152/ajpcell.2000.279.6.c1938
发表时间:
2000
期刊:
American journal of physiology. Cell physiology
影响因子:
--
作者:
Nara,M;Dhulipala,PD;Ji,GJ;Kamasani,UR;Wang,YX;Matalon,S;Kotlikoff,MI
通讯作者:
Kotlikoff,MI
DOI:
10.1152/jappl.1999.86.5.1715
发表时间:
1999
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
作者:
Voelkel,NF;Allard,JD;Anderson,SM;Burke,TJ
通讯作者:
Burke,TJ
DOI:
10.1016/0955-2235(92)90002-y
发表时间:
1992-01-01
期刊:
Progress in Growth Factor Research
影响因子:
--
作者:
PRIGENT S A;LEMOINE N R
通讯作者:
LEMOINE N R