Maeda H, Noguchi Y, Sato K, Akaike T
Department of Microbiology, Kumamoto University School of Medicine.
Jpn J Cancer Res. 1994 Apr;85(4):331-4. doi: 10.1111/j.1349-7006.1994.tb02362.x.
A newly discovered nitric oxide radical scavenger, an imidazolineoxyl N-oxide derivative, was used to investigate the role of nitric oxide radical (.NO) in the vascular permeability enhancement of solid tumor. Sarcoma-180 solid tumor in ddY mice was used for this experiment. Electron spin resonance spectroscopy was used to quantitate the reacted and unreacted scavenger. The results showed that extensive extravasation, assessed by intravenous injection of Evans blue, could be greatly suppressed by both .NO scavenger administered orally and .NO synthase inhibitor administrated intraperitoneally. This indicates that .NO is responsible for the vascular permeability in solid tumors.
一种新发现的一氧化氮自由基清除剂,即一种咪唑啉氧基N - 氧化物衍生物,被用于研究一氧化氮自由基(·NO)在实体瘤血管通透性增强中的作用。本实验采用ddY小鼠的肉瘤-180实体瘤。利用电子自旋共振光谱法定量已反应和未反应的清除剂。结果表明,通过静脉注射伊文思蓝评估的广泛血管外渗,可被口服的·NO清除剂和腹腔注射的·NO合酶抑制剂显著抑制。这表明·NO是实体瘤血管通透性的原因。