Angiotensin II stimulation of prostaglandin E2 and 6-keto-F1 alpha formation by isolated human glomeruli.

Angiotensin II stimulation of prostaglandin E2 and 6-keto-F1 alpha formation by isolated human glomeruli.
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血管紧张素 II 通过分离的人肾小球刺激前列腺素 E2 和 6-酮-F1 α 的形成。

DOI:
10.1038/ki.1984.130
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发表时间:
1984
影响因子:
19.6
通讯作者:
P. Schollmeyer
P. Schollmeyer
中科院分区:
医学1区
文献类型:
--
作者:
R. Stahl;M. Paravicini;P. Schollmeyer

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体外培养的人肾小球可内源性产生前列腺素E_2、F_2 α、6-酮-F_1 α和血栓素B_2(TxB_2),并可将外源性底物转化为前列腺素和血栓素B_2,主要产物为6-酮-PGF_(1 α)。这在基础条件下和与外源底物孵育后观察到。吲哚美辛(Indo; 10(-4 M)抑制花生四烯酸转化为PG和[1- 14 C]标记产物从人肾小球释放约80%。在基础条件下,向分离的肾小球中加入血管紧张素II(AII)几乎可以选择性刺激6-keto-PGF 1 α。用1- 14 C-花生四烯酸预标记肾小球后,添加AII后肾小球PG形成的增加也仅对6-酮-PGF 1 α显着。当肾小球与大量非放射性标记底物预孵育时。AII显著刺激PGE 2和6-keto-PGF 1 α的生成。数据表明PG形成在离体人肾小球,并显示AII和前列腺素系统在该组织之间的相互作用。这种相互关系可能在肾小球血流动力学的调节中具有生理学后果。
The intrinsic in vitro production of prostaglandins (PGs) E2, F2 alpha, 6-keto-F1 alpha, and thromboxane B2 (TxB2) and the conversion of exogenous substrate to PGs and TxB2 by isolated human glomeruli was demonstrated, 6-keto-PGF1 alpha was the major product. This was observed under basal conditions and following incubation with exogenous substrate. Indomethacin (Indo; 10(-4 M) inhibited the conversion of arachidonic acid to PGs and the release of [1-14C]-labeled products from human glomeruli by about 80%. The addition of angiotensin II (AII) to the isolated glomeruli produced, under basal conditions, an almost selective stimulation of 6-keto-PGF1 alpha. Following the prelabeling of glomeruli with 1-14C-arachidonic acid, the increase of glomerular PG formation after AII was added was also only significant for 6-keto-PGF1 alpha. When glomeruli were preincubated with large amounts of non-radiolabeled substrate. AII stimulated PGE2 and 6-keto-PGF1 alpha formation significantly. The data demonstrate PG formation in isolated human glomeruli and show an interaction between AII and the prostaglandin system in this tissue. This interrelationship might have physiologic consequences in the regulation of glomerular hemodynamics.
单侧输尿管结扎改变大鼠肾小球的前列腺素合成。
DOI: 10.1152/ajprenal.1981.241.3.f289
发表时间: 1981
期刊: The American journal of physiology
影响因子: --
作者:
Folkert,VW;Schlondorff,D
通讯作者: Schlondorff,D
离体大鼠肾小球的前列腺素合成:血管紧张素 II 的作用。
DOI: 10.1152/ajprenal.1980.239.5.f486
发表时间: 1980
期刊: The American journal of physiology
影响因子: --
作者:
Schlondorff,D;Roczniak,S;Satriano,JA;Folkert,VW
通讯作者: Folkert,VW
DOI: 10.1172/jci110931
发表时间: 1983-06
期刊: The Journal of clinical investigation
影响因子: --
作者:
L. Scharschmidt;M. Dunn
通讯作者: L. Scharschmidt;M. Dunn
离体大鼠肾小球中前列腺素和肾素-血管紧张素系统的相互作用。
DOI: 10.1152/ajprenal.1980.239.6.f602
发表时间: 1980
期刊: The American journal of physiology
影响因子: --
作者:
Beierwaltes,WH;Schryver,S;Olson,PS;Romero,JC
通讯作者: Romero,JC
DOI: 10.1038/ki.1981.163
发表时间: 1981-01-01
影响因子: 19.6
作者:
PETRULIS, AS;AIKAWA, M;DUNN, MJ
通讯作者: DUNN, MJ