Inhibition by dexamethasone of retinoic acid-induced enhancement of leukotriene C4 synthesis in rat basophilic leukemia-1 cells.
Inhibition by dexamethasone of retinoic acid-induced enhancement of leukotriene C4 synthesis in rat basophilic leukemia-1 cells.
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地塞米松抑制视黄酸诱导的大鼠嗜碱性白血病-1 细胞中白三烯 C4 合成的增强。
DOI:
10.1165/ajrcmb.11.1.8018338
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发表时间:
1994
影响因子:
6.4
通讯作者:
S. Miyazaki
中科院分区:
文献类型:
--
作者:
Y. Hamasaki;M. Abe;S. Matsumoto;T. Ichimaru;I. Kobayashi;E. Tanaka;M. Matsuo;N. Hara;S. Miyazaki
We investigated inhibitory actions of dexamethasone (DEX) on retinoic acid (RA)-induced enhancement of leukotriene C4 (LTC4) synthesis in rat basophilic leukemia-1 (RBL-1) cells. Cultured cells were preincubated with RA for 16 h with or without DEX, and generation of LTC4 was measured by high performance liquid chromatography in cell-free and intact cell systems. RA (0.1 microgram/ml) significantly potentiated calcium ionophore-stimulated production of LTC4 synthesis. DEX inhibited the RA-induced enhancement of LTC4 synthesis by up to approximately 95% in intact cells when stimulated with calcium ionophore. RA-induced LTC4 synthase activity, which was determined by enzyme assay, was also inhibited by DEX by 65% in a cell-free system. This discrepancy of inhibition between the intact and cell-free systems was due to a partial inhibition of phospholipase A2 activity by DEX in the intact cells. These results indicate that the production of LTC4 is predominantly regulated at a level of LTC4 synthase. The induction of new LTC4 synthase activity by RA and inhibition of the RA-induced activity by DEX are important regulatory mechanisms of LTC4 synthesis.
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影响因子:
5.3
作者:
C. Isacke;R. Lindberg;T. Hunter
通讯作者:
C. Isacke;R. Lindberg;T. Hunter
DOI:
--
发表时间:
1986
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
MacGlashanJr,DW;Peters,SP;Warner,J;Lichtenstein,LM
通讯作者:
Lichtenstein,LM
影响因子:
4.4
作者:
F. Levi‐Schaffer;K. Austen;J. Caulfield;A. Hein;P. M. Gravallese;R. Stevens
通讯作者:
F. Levi‐Schaffer;K. Austen;J. Caulfield;A. Hein;P. M. Gravallese;R. Stevens
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Casey,ML;Korte,K;MacDonald,PC
通讯作者:
MacDonald,PC
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
O'Banion,MK;Sadowski,HB;Winn,V;Young,DA
通讯作者:
Young,DA