Prostanoid EP3 and TP receptors-mediated inhibition of noradrenaline release from the isolated rat stomach.

Prostanoid EP3 and TP receptors-mediated inhibition of noradrenaline release from the isolated rat stomach.
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前列腺素 EP3 和 TP 受体介导的对离体大鼠胃中去甲肾上腺素释放的抑制。

DOI:
10.1016/s0014-2999(02)02857-1
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发表时间:
2003
影响因子:
5
通讯作者:
S. Okada
S. Okada
中科院分区:
医学2区
文献类型:
--
作者:
K. Yokotani;Kumiko Nakamura;S. Okada

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电刺激大鼠离体胃节后交感神经2次,频率1 Hz,持续1min。前列腺素E2和(16S-9-deoxy-9β-chloro-15-deoxy-16-hyfroxy-17,17-trimethylene-19,20-didehydro前列腺素F2)(EP3受体激动剂)减少去甲肾上腺素的释放,而ONO-DI-004(17S-2,5-乙基-6-氧代-17,20-二甲基前列腺素E1)(EP1受体激动剂),EP2受体激动剂ONO-AE1259-01(11,15-O-二甲基前列腺素E_2)和EP4受体激动剂ONO-AE1329[16-(3-methoxymethyl)phenyl-ω-tetranor-3,7-dithia PGE1没有作用。U-46619(9,11-二脱氧-9甲氧基,11-甲氧基前列腺素F2-(7-[3-[3-hydroxy-4-(4-iodophenoxy)-1-butenyl]-7-oxabicyclo[2,2,1]α)-,[1S[1-α,2-β(Z),3-(1E,1-α,2-α(Z),3-β(1E,TP受体激动剂SQ-29548(7-[3-[[2-[(苯氨基)羰基]hydrazino]methyl]-7-oxabicyclo[2,2,1]hept-2-yl][1S(1α,2α(Z),3α,4-α,4-α]-5-庚烯酸)可使去甲肾上腺素释放减少。百日咳毒素可消除U-46619的抑制作用,但不能消除ONO-AE-248的抑制作用。这些结果表明,前列腺素EP3和TP受体介导了大鼠胃去甲肾上腺素释放的抑制,TP而不是EP3受体介导的抑制是由百日咳毒素敏感机制介导的。
The postganglionic sympathetic nerves of the isolated rat stomach were electrically stimulated twice at 1 Hz for 1 min. Prostaglandin E2and ONO-AE-248 (16S-9-deoxy-9β-chloro-15-deoxy-16-hyfroxy-17,17-trimethylene-19,20-didehydro prostaglandin F2) (an EP3receptor agonist) reduced the evoked noradrenaline release, while ONO-DI-004 (17S-2,5-ethano-6-oxo-17,20-dimethyl prostaglandin E1) (an EP1receptor agonist), ONO-AE1-259-01 (11,15-O-dimethyl prostaglandin E2) (an EP2receptor agonist) and ONO-AE1-329 [16-(3-methoxymethyl)phenyl-ω-tetranor-3,7-dithia prostaglandin E1] (an EP4receptor agonist) had no effect. U-46619 (9,11-dideoxy-9α,11α-methanoepoxy prostaglandin F2α) and I-BOP (7-[3-[3-hydroxy-4-(4-iodophenoxy)-1-butenyl]-7-oxabicyclo[2,2,1] hept-2-yl]-,[1S[1α,2α(Z),3β(1E,3S)4α]]-5-heptenoic acid) (TP receptor agonists) also reduced the noradrenaline release and these inhibitory effects were abolished by SQ-29548 (7-[3-[[2-[(phenylamino) carbonyl] hydrazino]methyl]-7-oxabicyclo[2,2,1]hept-2-yl][1S(1α,2α(Z), 3α,4α]-5-heptenoic acid) (a TP receptor antagonist). The inhibitory effect of U-46619, but not ONO-AE-248, was abolished by pertussis toxin. These results suggest that the prostanoid EP3and TP receptors mediate the inhibition of gastric noradrenaline release; TP, but not EP3, receptor-mediated inhibition is mediated by a pertussis toxin-sensitive mechanism in rats.
血栓素受体激动剂增强兔离体肠系膜动脉的肾上腺素能神经传递。
DOI: --
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期刊: The Journal of pharmacology and experimental therapeutics
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发表时间: 1992
期刊: The Journal of pharmacology and experimental therapeutics
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