共查询到19条相似文献,搜索用时 183 毫秒
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姜黄素是姜黄的天然多酚成分,具有良好的生物学功能,如抗炎、抗癌、抗菌,但其生物利用度差、溶解度低、在体液中的不稳定性、代谢速度快,限制了该药物的治疗应用.本文对基于纳米技术的姜黄素递送系统如脂质体、聚合物胶束、聚合物纳米粒子、纳米凝胶等进行综述,纳米载体具有改善药物的水溶性、生物利用度以及克服生理障碍的能力,可使姜黄素的活性显著增强,减少所需剂量,具有更好的靶向性;同时对姜黄素纳米制剂在医学领域治疗如癌症、眼部疾病、伤口愈合等方面的应用与前景进行了展望,旨在为姜黄素的进一步研究与开发提供参考与借鉴. 相似文献
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纳米技术在靶向给药方面显现出很大优势,使纳米载体具有pH-敏感性,利用病理组织和正常组织间pH的不同,就会很容易的将药物导向病灶部位,增加药物在病灶部位的浓度,提高生物利用度,介绍了pH-敏感纳米材料对药物释放的发展现状. 相似文献
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纳米生物技术在诊断学和药物运送中有重要作用,文章主要解释了几种技术包括纳米技术和纳米装置如纳米生物传感器和纳米生物芯片是怎样应用于提高药物发现和发展过程的。在体内应用纳米粒子会有一些安全方面的考虑,一些研究正在试验这些物质的天然和扩大的不良反应。应用纳米技术于健康护理及个体化药物的前景十分广阔。 相似文献
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SiO_2的开发应用现状 总被引:1,自引:0,他引:1
系统介绍并分析了SiO2在工业领域的利用现状。目前,国内的SiO2开发应用逐步由粗加工向深加工发展,尤其是纳米技术的渗入以及硅电子光学产品的开发,加速了SiO2产品的发展。现阶段SiO2开发应用产品主要有:纳米陶瓷等超细纳米化产品、氮氧化硅粉末、分子筛、耐高温硅酸钙保温材料、新型精铸用石英粉涂料等。此外,指出了该领域研究目前存在的问题及今后的对策。 相似文献
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提高口服胰岛素的生物利用度一直是药学工作者研究的热点内容。介绍了药物在肠内经细胞间和跨细胞转运吸收的一般机制,详述了胰岛素在胃肠道中所面临的物理和化学屏障、酶屏障以及对此采取的相应措施,建议:在胰岛素制剂加工过程中,采用温和的pH值和温度环境并尽量避免使用有机溶剂,以最大限度保留药物的生物活性;对胰岛素采用微囊包衣以降低胃肠道的化学屏障或酶屏障对其稳定性的影响;开发广谱酶抑制剂并用于胰岛素口服制剂,以对抗肠道内的蛋白酶对其降解。 相似文献
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Shih-Fan Jang Wei-Hsiu Liu Wen-Shin Song Kuan-Lin Chiang Hsin-I Ma Chung-Lan Kao Ming-Teh Chen 《International journal of molecular sciences》2014,15(3):3904-3925
In recent decades, nanotechnology has attracted major interests in view of drug delivery systems and therapies against diseases, such as cancer, neurodegenerative diseases, and many others. Nanotechnology provides the opportunity for nanoscale particles or molecules (so called “Nanomedicine”) to be delivered to the targeted sites, thereby, reducing toxicity (or side effects) and improving drug bioavailability. Nowadays, a great deal of nano-structured particles/vehicles has been discovered, including polymeric nanoparticles, lipid-based nanoparticles, and mesoporous silica nanoparticles. Nanomedical utilizations have already been well developed in many different aspects, including disease treatment, diagnostic, medical devices designing, and visualization (i.e., cell trafficking). However, while quite a few successful progressions on chemotherapy using nanotechnology have been developed, the implementations of nanoparticles on stem cell research are still sparsely populated. Stem cell applications and therapies are being considered to offer an outstanding potential in the treatment for numbers of maladies. Human induced pluripotent stem cells (iPSCs) are adult cells that have been genetically reprogrammed to an embryonic stem cell-like state. Although the exact mechanisms underlying are still unclear, iPSCs are already being considered as useful tools for drug development/screening and modeling of diseases. Recently, personalized medicines have drawn great attentions in biological and pharmaceutical studies. Generally speaking, personalized medicine is a therapeutic model that offers a customized healthcare/cure being tailored to a specific patient based on his own genetic information. Consequently, the combination of nanomedicine and iPSCs could actually be the potent arms for remedies in transplantation medicine and personalized medicine. This review will focus on current use of nanoparticles on therapeutical applications, nanomedicine-based neuroprotective manipulations in patient specific-iPSCs and personalized medicine. 相似文献
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在简要介绍了纳米技术、纳米材料以及VOCs处理技术的基础上,概述了纳米技术在VOCs处理中应用方向,重点综述了近年来纳米光催化技术、纳米热催化技术、纳米吸附技术和纳米综合处理技术在VOCs处理中的应用研究进展,并指出了今后应着重研究的几个方面,旨在促进其相关研究的发展。 相似文献
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Kirubanandam Grace Pavithra Ponnusamy Senthil Kumar Panneerselvam Sundar Rajan Anbalagan Saravanan Mu Naushad 《Korean Journal of Chemical Engineering》2017,34(11):2787-2805
Pharmaceutical compounds and their derivatives are major pollutants in the environment, as their metabolites affect the terrestrial as well as aquatic organisms in one or another way. In recent times, many papers have discussed the treatment procedures for single pharmaceutical and mixture of pharmaceutical components, but only few papers have discussed the fate and the exposure of pharmaceutical contaminants in our environment. In this paper, we discuss the sources and the forms of pharmaceutical products and their resultant in the environment and their addition to the microbial and to human communities. A detailed discussion of various treatment techniques from conventional to current techniques, their advantages and disadvantages is given here. Researchers are finding the techniques in order to completely degrade the contaminants and their transformed products from the environment. Among the technique, s nanotechnology was found to be an efficient technique, and the combination of nanotechnology with other conventional technologies gives higher removal efficiency. 相似文献