期刊
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
卷 15, 期 3, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1088/1468-6996/15/3/035002
关键词
anti-oxidative stress; cigarette smoke; cigarette filter; nitroxide radical-containing polymers; reactive oxygen species
资金
- Smoking Research Foundation
- World Premier International Research Center Initiative (WPI) on Materials Nanoarchitronics of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- [25220203]
- Grants-in-Aid for Scientific Research [13J00906, 13J06119] Funding Source: KAKEN
We developed a nitroxide radicals-containing polymer (NRP), which is composed of poly(4-methylstyrene) possessing nitroxide radicals as a side chain via amine linkage, to scavenge reactive oxygen species (ROS) from cigarette smoke. In this study, the NRP was coated onto cigarette filters and its ROS-scavenging activity from streaming cigarette smoke was evaluated. The intensity of electron spin resonance signals of the NRP in the filter decreased after exposure to cigarette smoke, indicating consumption of nitroxide radicals. To evaluate the ROS-scavenging activity of the NRP-coated filter, the amount of peroxy radicals in an extract of cigarette smoke was measured using UV-visible spectrophotometry and 1,1-diphenyl-2-picrylhydrazyl (DPPH). The absorbance of DPPH at 517 nm decreased with exposure to cigarette smoke. When NRP-coated filters were used, the decrease in the absorbance of DPPH was prevented. In contrast, both poly[4-(cyclohexylamino) methylstyrene]- and poly (acrylic acid)-coated filters, which have no nitroxide radical, did not show any effect, indicating that the nitroxide radicals in the NRP scavenge the ROS in cigarette smoke. As a result, the extract of cigarette smoke passed through the NRP-coated filter has a lower cellular toxicity than smoke passed through poly[4-(cyclohexylamino) methylstyrene]- and poly(acrylic acid)-coated filters. Accordingly, NRP is a promising material for ROS scavenging from cigarette smoke.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据