首页> 外文期刊>American Journal of Physiology >Nitric oxide donors retard wound healing in cultured rabbit gastric epithelial cell monolayers.
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Nitric oxide donors retard wound healing in cultured rabbit gastric epithelial cell monolayers.

机译:一氧化氮供体阻碍了培养的兔胃上皮细胞单层的伤口愈合。

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摘要

Effects of nitric oxide (NO) on gastric wound healing were investigated in primary rabbit gastric epithelial cell cultures. We analyzed the speed of cell migration, proliferation, and apoptosis after creating a round wound on the cell cultures. The monolayers were incubated with or without the NO donor sodium nitroprusside, oxatriazolimine 1,2,3,4-oxatriazolium, 5amino-3-(3,4-dichlorophenylchloride), or the peroxynitrite generator 3-morpholinosydnomine-N-ethylcarbamide. The possible role of cGMP as a second messenger of NO was investigated with 8-bromo-cGMP. The role of O2(-*) was evaluated using diethyldithiocarbamate and pyrogallol. The effects of superoxide dismutase and allopurinol were also investigated. NO inhibited the speed of cell migration and proliferation and induced cell apoptosis in a dose- and time-dependent manner. The effects were augmented with O2(-*) generators and ameliorated by O2-(8) scavengers, whereas cGMP had no significant effect on wound healing. NO donors retard gastric wound healing by inhibiting migration and proliferation and inducing cell apoptosis. These effects do not seem to be mediated via cGMP, but O2(-*). or peroxynitrites may be involved.
机译:一氧化氮(NO)对胃创面愈合的影响在原代兔胃上皮细胞培养物中进行了研究。我们在细胞培养物上形成圆形伤口后,分析了细胞迁移,增殖和凋亡的速度。将单层与或不与NO供体硝普钠,草三唑胺1,2,3,4-草三唑,5氨基-3-(3,4-二氯苯氯)或过氧亚硝酸盐生成剂3-吗啉代嘧啶-N-乙基氨基甲酰胺一起孵育。用8-溴-cGMP研究了cGMP作为NO的第二信使的可能作用。使用二乙基二硫代氨基甲酸酯和邻苯三酚来评估O2(-*)的作用。还研究了超氧化物歧化酶和别嘌呤醇的作用。 NO以剂量和时间依赖性方式抑制细胞迁移和增殖的速度并诱导细胞凋亡。 O2(-*)发生器增强了这种作用,O2-(8)清除剂改善了这种作用,而cGMP对伤口愈合没有显着影响。 NO供体通过抑制迁移和增殖并诱导细胞凋亡来延迟胃伤口愈合。这些作用似乎不是通过cGMP介导的,而是O2(-*)。或可能涉及过氧亚硝酸盐。

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