聚甲基丙烯酸甲酯纳米粒子涂覆天然胶乳膜表面的体外细胞毒性评价。
In vitro cytotoxicity evaluation of natural rubber latex film surface coated with PMMA nanoparticles.
机构信息
Department of Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Phyathai, Bangkok 10400, Thailand.
出版信息
Colloids Surf B Biointerfaces. 2010 Jul 1;78(2):328-33. doi: 10.1016/j.colsurfb.2010.03.025. Epub 2010 Mar 27.
In order to increase surface roughness of the sulphur-prevulcanized natural rubber (SPNR) film and, hence, decrease the direct contact between the rubber and skin, the poly(methyl methacrylate) (PMMA) latex particles were deposited onto the SPNR film grafted with polyacrylamide (SPNR-g-PAAm). The surface coverage of PMMA particles on the SPNR-g-PAAm increased with increasing latex immersion time, particle size and concentration. Prior to the in vitro cytotoxicity evaluation on L-929 fibroblasts, the SPNR and SPNR-g-PAAm coated with PMMA particles were extracted by using the culture medium. Results showed that the cytotoxicity effect could be significantly reduced by coating PMMA particles onto the rubber film. At the extract concentrations of < or =12.5% for 24h at 37 degrees C, no toxicity potential was detected. The study will be helpful for development of gloves designed for the hypersensitive person.
为了提高硫磺预硫化天然橡胶(SPNR)薄膜的表面粗糙度,从而减少橡胶与皮肤的直接接触,将聚甲基丙烯酸甲酯(PMMA)乳胶颗粒沉积在接枝了聚丙烯酰胺(SPNR-g-PAAm)的 SPNR 薄膜上。PMMA 颗粒在 SPNR-g-PAAm 上的表面覆盖率随乳胶浸渍时间、粒径和浓度的增加而增加。在对 L-929 成纤维细胞进行体外细胞毒性评价之前,用培养基提取涂覆 PMMA 颗粒的 SPNR 和 SPNR-g-PAAm。结果表明,通过在橡胶膜上涂覆 PMMA 颗粒,可以显著降低细胞毒性作用。在 37℃下 24 小时内,提取浓度 <或=12.5%时,未检测到毒性。这项研究将有助于开发为过敏人群设计的手套。