Prostaglandin E2, prostaglandin E1 and thromboxane B2 release from human monocytes treated with C3b or bacterial lipopolysaccharide.

Prostaglandin E2, prostaglandin E1 and thromboxane B2 release from human monocytes treated with C3b or bacterial lipopolysaccharide.
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用 C3b 或细菌脂多糖处理的人单核细胞释放前列腺素 E2、前列腺素 E1 和血栓素 B2。

DOI:
10.1016/0167-4889(87)90128-5
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发表时间:
1987
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Rutherford,RB
Rutherford,RB
中科院分区:
--
文献类型:
--
作者:
Nichols,FC;Schenkein,HA;Rutherford,RB

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C3b或脂多糖处理培养的人外周血单核细胞刺激血栓素b2的早期释放和前列腺素E的延迟释放到培养上清液中。免疫反应性血栓素b2的释放在培养单核细胞刺激后的2-8小时达到最大,而前列腺素E的释放在16-24小时达到最大。我们通过比较脉冲或连续用[3H]花生四烯酸和[14C]二十碳三烯酸标记的人单核细胞释放标记的前列腺素E2、前列腺素e1和血栓素b2的时间过程进一步研究了这一过程。标记的类二十烷释放量与免疫反应性前列腺素E和血栓素B2的释放量进行比较。无论标记条件如何,所有培养上清中前列腺素e2释放的时间过程与前列腺素e2释放的时间过程几乎相同。然而,只有在连续标记的培养物中,免疫反应性前列腺素E的释放与标记前列腺素e1和e2的释放平行。脉冲标记培养中标记前列腺素e1和e2的释放与血栓素b2的释放平行,而非免疫反应性前列腺素。相比之下,在相同的培养上清中定量的标记和免疫反应性血栓素B2显示出相似的释放模式,无论标记条件如何。这些发现表明,前列腺素E和血栓素b2从人单核细胞释放的差异模式与前列腺素e1相对于前列腺素E2释放的时间依赖性转移无关。由于血栓素b2和前列腺素e2是通过环加氧酶介导的花生四烯酸转化产生的,这些结果进一步表明前列腺素e2和血栓素b2在人类单核细胞群体中是独立代谢的。
C3b or lipopolysaccharide treatment of human peripheral blood monocytes in culture stimulates an early release of thromboxane B2and a delayed release of prostaglandin E into culture supernatants. Immunoreactive thromboxane B2release is maximal from 2–8 h, whereas prostaglandin E release is maximal from 16–24 h after stimulation of monocytes in culture. We further examined this process by comparing the time course of labelled prostaglandin E2, prostaglandin E1and thromboxane B2release from human monocytes which were pulse or continuously labelled with [3H]arachidonic acid and [14C]eicosatrienoic acid. The release of labelled eicosanoids was compared with the release of immunoreactive prostaglandin E and thromboxane B2. The time course of prostaglandin E2release was virtually identical to the release of prostaglandin E1in all culture supernatants regardless of labelling conditions. However, release of immunoreactive prostaglandin E paralleled the release of labelled prostaglandin E1and E2only for continuously labelled cultures. The release of labelled prostaglandin E1and E2from pulse labelled cultures paralleled the release of thromboxane B2and not immunoreactive prostaglandin. In contrast, labelled and immunoreactive thromboxane B2, quantitated in the same culture supernatants, demonstrated similar release patterns regardless of labelling conditions. These findings indicate that the differential pattern of prostaglandin E and thromboxane B2release from human monocytes is not related to a time-dependent shift in the release of prostaglandin E1relative to prostaglandin E2. Because thromboxane B2and prostaglandin E2are produced through cyclooxygenase mediated conversion of arachidonic acid, these results further suggest that prostaglandin E2and thromboxane B2are independently metabolized in human monocyte populations.
C3 裂解产物和可溶性免疫复合物刺激人单核吞噬细胞合成并释放前列腺素。
DOI: --
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DOI: --
发表时间: 1983
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影响因子: --
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DOI: 10.1172/jci107801
发表时间: 1974
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发表时间: 1979-01-01
影响因子: 2.9
作者:
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