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豚鼠灌注肺中血栓素B2积聚和代谢的选择性抑制

Selective inhibition of thromboxane B2 accumulation and metabolism in perfused guinea-pig lung.

作者信息

Hoult J R, Robinson C

出版信息

Br J Pharmacol. 1983 Jan;78(1):85-8. doi: 10.1111/j.1476-5381.1983.tb09366.x.

Abstract

1 U46619, a prostaglandin H2 endoperoxide analogue and thromboxane A2 agonist, dose-dependently inhibited accumulation and metabolism of thromboxane B2 in the isolated perfused lung of the guinea-pig. At similar doses prostaglandins E1, E2, F1 alpha, F2 alpha, I2, 5, 6-trans-PGE2 and 8-iso-PGE1 were ineffective. 2 U46619 did not affect accumulation and metabolism of prostaglandin F2 alpha under similar conditions. 3 The pulmonary disposition of thromboxane B2, which occurs by uptake into pulmonary cells or binding to a specific macromolecular component, is mediated by a mechanism distinct from that handling prostaglandin F2 alpha. The possible relevance of these findings to the pulmonary disposition of thromboxane A2 is discussed.

摘要
  1. U46619是一种前列腺素H2内过氧化物类似物和血栓素A2激动剂,它能剂量依赖性地抑制豚鼠离体灌注肺中血栓素B2的蓄积和代谢。在相似剂量下,前列腺素E1、E2、F1α、F2α、I2、5,6 -反式 - PGE2和8 -异 - PGE1均无此作用。2. 在相似条件下,U46619不影响前列腺素F2α的蓄积和代谢。3. 血栓素B2在肺中的处置是通过被肺细胞摄取或与特定大分子成分结合而发生的,其介导机制与处理前列腺素F2α的机制不同。文中讨论了这些发现与血栓素A2在肺中处置的可能相关性。

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Thromboxane A2 analogues inhibit the metabolism of thromboxane B2 in perfused guinea-pig lung.
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Thromboxane B2 uptake and metabolism in isolated perfused lung. Identification and comparison with prostaglandin F2 alpha.
Biochim Biophys Acta. 1982 Aug 18;712(2):315-25. doi: 10.1016/0005-2760(82)90349-6.

本文引用的文献

2
Inactivation of prostaglandins in the perfused rat lung.灌注大鼠肺中前列腺素的失活
Biochem Pharmacol. 1982 Mar 1;31(5):633-8. doi: 10.1016/0006-2952(82)90442-7.
3
Present concepts on the mechanisms of platelet aggregation.当前关于血小板聚集机制的概念。
Biochem Pharmacol. 1981 Feb 15;30(4):263-71. doi: 10.1016/0006-2952(81)90052-6.
4
Thromboxane B2 uptake and metabolism in isolated perfused lung. Identification and comparison with prostaglandin F2 alpha.
Biochim Biophys Acta. 1982 Aug 18;712(2):315-25. doi: 10.1016/0005-2760(82)90349-6.
10
PGA1 and PGF2 alpha metabolism by pig pulmonary endothelium, smooth muscle, and fibroblasts.
J Appl Physiol Respir Environ Exerc Physiol. 1979 Feb;46(2):211-6. doi: 10.1152/jappl.1979.46.2.211.

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