期刊
BIOMATERIALS
卷 32, 期 33, 页码 8605-8612出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2011.07.024
关键词
Antioxidant; Copolymer; Free radical; In vitro test; Nanoparticle; Neural cell
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) [21240050]
- University of Tsukuba
- International Center for Materials Nanoarchtechtonics (MANA), National Institute for Materials Science (NIMS)
- Grants-in-Aid for Scientific Research [22800004, 21240050, 22659008] Funding Source: KAKEN
The antioxidant effect and potential mechanism of nitroxide radical-containing nanoparticles (RNPs) coupled with piperine (PI) were investigated in human neuroblastoma SH-SY5Y cells. The effects of RNP/PI on SH-SY5Y cell lines was determined by WST assay for cell viability, nitroblue tetrazolium and deoxyribose assay for reactive oxygen species generation. ELISA assay for reactive oxygen species products and apoptotic cell death, and biochemical techniques for catalase and glutathione peroxidase activity. The RNP/PI significantly reduced the reactive oxygen species level and reactive oxygen species products compared with those of cells treated with RNPs alone. The RNP/PI treatment enhanced catalase and glutathione peroxidase activity. The combination of RNP/PI has been found to have an augmented antioxidant effect on an Alzheimer's model in vitro. The mechanism of the protective effect of this combination therapy was correlated in this study with its ability to reduce the generation of reactive oxygen species and prevent apoptosis via scavenging enzyme action pathways. (C) 2011 Elsevier Ltd. All rights reserved.
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