發明
中華民國
107138393
I 687229
具有協同作用之生醫材料及其製造方法
高雄醫學大學
2020/03/11
爰於上述,於105 年度計畫中申請人已成功開發並放大量製備多級孔(hierarchically meso-macroporous)載銀二氧化矽(Ag-SiO2)材料,單批次粉體製備量>50g;另根據ISO 10993-5: 2009-Biological evaluation of medical devices-Part 5: Tests for in vitro cytotoxicity 分別針對 NIH/3T3(纖維母細胞fibroblast cells)、RBL-2H3(巨大細胞mast cells)以及RAW264.7(巨噬細 胞Macrophages)進行皮膚細胞毒性、過敏反應以及發炎反應的細胞模式毒性分析;細胞存活 率皆大於80 %,表示該材料無細胞毒性。 該材料經美國藥典USP-51 防腐效能試驗五種菌種,包含三株細菌(大腸桿菌ATCC 8739、綠膿桿菌ATCC 9027、金黃色葡萄球菌ATCC 6538)和兩株真菌(黑黴菌ATCC 16404、 白色念珠菌ATCC 10231),皆具有抑菌作用。 真菌具無性孢子生長快速的特性,故無法單一使用本材料完全抑制真菌的生長。本申請 案進一步提出Core-Shell structure『Core: AgNP, Shell: Meso SiO2+ IPMP』: 將nano-particles Ag 以core structure 限域於hierarchically meso-macroporous SiO2 中,並將抗霉劑異丙基甲基酚 (isopropyl methylphenol, IPMP)載附於SiO2 介孔中;預期其具有協同作用,以達到USP-51 防 腐效能試驗之功效需求。 For the above reasons, the applicant has successfully developed and enlarged output a hierarchically silver incorporated meso-macroporous silica material (Ag-SiO2) in the 2016 plan. The materials are tested in five strains including three bacteria and two fungi by the USP-51 standards preservative efficacy test. All have antibacterial activity. Only using Ag-SiO2 material can not completely inhibit fungal growth due to it has a rapid growth property of the asexual spore. A Core-Shell Structure "Core: AgNP, Shell: Meso SiO2 + IPMP" is proposed. It is nano-particles silver bounded in the hierarchically meso-macroporous SiO2 by core structure and antimicrobial agent isopropyl methylphenol(IPMP) confined into the SiO2 mesopores. The Core-Shell Structure is expected to have a synergistic effect to meet requirements of the USP-51 standards preservative efficacy test.
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