Effect of prostaglandins on renal epithelial electrolyte transport.
Effect of prostaglandins on renal epithelial electrolyte transport.
复制标题
前列腺素对肾上皮电解质转运的影响。
DOI:
10.1038/ki.1981.82
复制
发表时间:
1981
影响因子:
19.6
通讯作者:
Kokko,JP
中科院分区:
文献类型:
--
作者:
Kokko,JP
It is well appreciated that changes in renal prostaglandin (PG) levels may affect the excretion of salt and water. In fact, a general consensus exists that PG's are natriuretic during conditions where ani-mals have access acutely or chronically to salt, but their role in water diuresis is less clear [1, 2]. Our own clearance studies in conscious dogs [3] and anesthetized rats [411 show that meclofenamate blunts the volume-expansion-mediated chioruresis without changes in GFR or renal blood flow. Thus, these studies are consistent with the findings of others who have supported a natriuretic role for renal PG's [5—14]. A more controversial issue, however, has been whether the PG's affect salt and water transport by direct epithelial effects or wheth-er PG's mediate their effects by some secondary phenomena such as changes in hemodynamics or changes in biochemical messengers. In vivo micro-puncture and in vitro microperfusion techniques offer some unique advantages over clearance techniques to assess whether the effects of a compound are direct or indirect. The purpose of this paper is to examine the effects of PG's on various nephron segments with specific emphasis on segments of the distal tubule (thick ascending limb, distal convolut-ed tubule, and collecting duct segments) using in vivo and in vitro micropuncture and microperfusion techniques.In vivo micropuncture studies In vivo micropuncture studies have examined the effect of PG's on sodium transport across various nephron segments in both the anesthetized rat and dog. Two different approaches have been used: either intravascular or intratubular infusion of exogenous PG's; or inhibition of endogenous PG's. With few exceptions, the published studies are remarkably consistent with their conclusions. The effects will be summarized segmentally with specific em-
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DOI:
10.1152/ajprenal.1977.232.4.f383
发表时间:
1977
期刊:
The American journal of physiology
影响因子:
--
作者:
L. Fine;W. Trizna
通讯作者:
W. Trizna
DOI:
10.1172/jci108625
发表时间:
1977
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
J. B. Gross;J. Kokko
通讯作者:
J. Kokko
DOI:
--
发表时间:
1977
期刊:
Federation proceedings
影响因子:
--
作者:
B. Schmidt
通讯作者:
B. Schmidt
DOI:
--
发表时间:
1977
期刊:
Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine
影响因子:
--
作者:
M. Kauker
通讯作者:
M. Kauker
DOI:
10.1016/0090-6980(77)90022-3
发表时间:
1977
期刊:
Prostaglandins
影响因子:
--
作者:
M. Dunn;D. Howe
通讯作者:
D. Howe