生物大分子药物无创眼内递送研究进展

生物大分子药物为许多眼科疾病患者带来了重见光明的希望,但由于眼部存在各种动态及静态吸收屏障,此类药物难以实现安全有效的眼内递送。临床上,生物大分子需通过眼内注射方式给药,而频繁的眼内注射伴随着诸多副作用,且患者顺应性差。构建理想的眼部药物递送系统,实现生物大分子的无创给药,尤其是将其递送至眼后段以治疗眼底疾病,始终是亟待满足的眼科需求。综述阻碍药物眼部吸收的各种生理屏障,以及近年来采用纳米递药系统、细胞穿膜肽及其他一些物理手段实现多肽蛋白类药物及基因药物眼内无创递送的研究进展,旨在为相关研究提供参考。     

治疗用生物大分子免疫原性的研究进展

随着生物技术的发展,生物大分子药物展现出良好的应用价值,带来巨大效益,但生物大分子的免疫原性会导致机体的免疫反应,造成毒副作用。如何合理的预测、减小及检测治疗用生物大分子的免疫原性,对生物大分子的广泛应用具有重要意义。本文从影响因素、改善手段、检测手段等方面对生物大分子的免疫原性进行综述,以期对相关研究有所帮助。     

生物大分子药物传送系统及功能高效化的研究进展

综述了国内外现阶段生物大分子药物传送系统及功能高效化的进展。     

脂质体药物递送系统的研究进展

注射剂作为一种特殊的药物剂型,具有起效快、定位准等优点,因而被广泛应用于临床。随着临床应用需求的增多,在传统注射剂的基础上,许多新型注射剂应运而生。脂质体、混悬剂、纳米粒、微球和包合物等注射给药系统的出现,不仅减少了药物在体内外的降解,还具有缓释、控释的优点,受到研究人员密切关注。重点介绍了几种新型注射剂的特点,并对国内外已上市和在研的新型注射剂进行简要介绍,旨在为其深度开发提供参考。

     

树枝状大分子纳米载体作为脑靶向给药系统的研究进展

血脑屏障在保护中枢神经系统中发挥了重要的作用,但也阻碍了药物或者诊断剂向脑部递送。本文根据近年来国内外文献资料,针对树枝状大分子纳米载体不同的修饰方法在脑靶向系统的应用进行归纳总结。修饰后的树枝状大分子作为向脑部递送药物或者基因的系统载体具有良好的应用前景。     

姜黄素药物递送系统研究进展

姜黄素具有良好的药理活性,药效稳定,安全有效,尤其是抗肿瘤活性为近年研究的热点。但其水溶性差,生物利用度低,限制了其临床应用,有必要开发适当的姜黄素给药系统。该文对姜黄素国内外研究的新剂型进行了综述。     

壳聚糖在生物大分子药物给药中的应用

壳聚糖具有促进生物大分子药物透膜渗透和生物粘附作用。利用壳聚糖形成的自身聚集体以及用壳聚糖制备的微粒制剂、混合胶体和包衣制剂等，均可提高生物大分子药物的生物利用度。     

共递送抗癌药多柔比星和基因的纳米载药系统研究进展

共递送抗癌药多柔比星和基因治疗肿瘤可以产生协同治疗作用,提高治疗效果,降低毒性以及克服多柔比星引起的多药耐药性。共递送抗癌药和基因的纳米载体近年成为国内外研究的热点,目前,正在研究的共递送纳米载药体系包括脂质体、纳米粒、胶束等。共递送抗癌药和基因能够弥补抗癌药和基因单独治疗肿瘤的不足,有望进一步研究应用于临床。     

二十二碳六烯酸药物递送系统研究进展

二十二碳六烯酸(DHA)因具有多种潜在的药理活性及营养价值,在食品和医药领域都有重要的应用。然而,DHA是一种长链不饱和脂肪酸,含多个双键,其稳定性和水溶性差使其在医药领域和食品工业的应用受到很大限制。本文重点将负载DHA的药物传递系统如在纳米粒、脂质体、微乳、纳米乳、水凝胶和聚合物胶束纳米递送系统中的应用研究,以及将DHA与其他药物共同封装、寻求改善现有传递系统性能的研究进行综述,为DHA的研究和应用提供参考。     

树枝状大分子在药物递送系统中的应用

纳米技术的进步对于药物递送有深远影响.树枝状大分子因具有独特的树状结构、单分散性和丰富的表面官能团,引起了研究人员的极大兴趣.其独特的性质,如纳米级均匀大小、高度支化度、多价态、水溶性、可用的内腔和便捷的合成方法,使得它成为小分子药物的理想载体.本文就树枝状大分子在各个给药系统中的应用进行概述,并讨论这些纳米载体目前在...     

抗肿瘤多药联用型纳米递送系统的研究进展

由于肿瘤病理复杂性,临床治疗中对于多种药物联合使用的需求日益迫切。多药联用可同时作用于多通路和多靶点发挥协同增效作用,然而目前临床多药联用的递送策略仍有较大优化空间。纳米药物递送系统可精准调控药物多组分灵活荷载,并携载药物克服生理、病理屏障,实现肿瘤组织、细胞的有效富集,完成持续、可控和靶向递送,实现抗肿瘤增效减毒,已在肿瘤多药联合治疗领域展现出广阔的前景,并成为药物研发的新方向之一。本文对近年来肿瘤联合用药治疗策略及其递送系统的研究进展进行了综述,并分析和探讨了多药联用型纳米递送系统的应用瓶颈、现有研究面临的挑战及未来的发展趋势。     

Recent advances in brain tumor-targeted nano-drug delivery systems

Introduction: Brain tumors represent one of the most challenging and difficult areas in unmet medical needs. Fortunately, the past decade has seen momentous developments in brain tumor research in terms of brain tumor-targeted novel nano-drug delivery systems with significant important superiority over conventional formulations with respect to decreased toxicity and improved pharmacokinetics/pharmacodynamics.

Area covered: This review first introduces the characteristics of the two major obstacles in brain-tumor targeted delivery, blood–brain barrier (BBB) and blood–brain tumor barrier (BBTB), and then reviews recent advances in brain tumor-targeted novel nano-drug delivery systems according to their targeting strategies aimed at different stages of brain tumor development and growth.

Expert opinion: Based on continuously changing vascular characteristics of brain tumors at different development and growth stages, we propose the concept of ‘whole-process targeting’ for brain tumor for nano-drug delivery systems, referring to a series of overall targeted drug delivery strategies aimed at key points during the whole development of brain tumors.     

Recent advances in brain tumor-targeted nano-drug delivery systems

INTRODUCTION: Brain tumors represent one of the most challenging and difficult areas in unmet medical needs. Fortunately, the past decade has seen momentous developments in brain tumor research in terms of brain tumor-targeted novel nano-drug delivery systems with significant important superiority over conventional formulations with respect to decreased toxicity and improved pharmacokinetics/pharmacodynamics. AREA COVERED: This review first introduces the characteristics of the two major obstacles in brain-tumor targeted delivery, blood-brain barrier (BBB) and blood-brain tumor barrier (BBTB), and then reviews recent advances in brain tumor-targeted novel nano-drug delivery systems according to their targeting strategies aimed at different stages of brain tumor development and growth. EXPERT OPINION: Based on continuously changing vascular characteristics of brain tumors at different development and growth stages, we propose the concept of 'whole-process targeting' for brain tumor for nano-drug delivery systems, referring to a series of overall targeted drug delivery strategies aimed at key points during the whole development of brain tumors.     

纳米药物载体在经皮给药系统中应用的研究进展

目的介绍纳米药物载体在经皮给药系统中的应用。方法查阅国内外文献共31篇,从纳米药物载体在经皮给药系统中的应用及各自的优势和不足等方面进行综述。结果纳米药物载体具有提高药物的化学稳定性、促进药物经皮吸收、控制药物释放以及定位给药等优点,在药物的经皮吸收方面具有广阔应用前景。结论纳米药物载体为药物的经皮通透提供了新的途径和方法,但是其安全性和有效性仍需进一步研究。     

Layer-by-Layer assembled nano-drug delivery systems for cancer treatment

Nano-drug delivery systems (NDDS) are functional drug-loaded nanocarriers widely applied in cancer therapy. Recently, layer-by-layer (LbL) assembled NDDS have been demonstrated as one of the most promising platforms in delivery of anticancer therapeutics. Here, a brief review of the LbL assembled NDDS for cancer treatment is presented. The fundamentals of the LbL assembled NDDS are first interpreted with an emphasis on the formation mechanisms. Afterwards, the tailored encapsulation of anticancer therapeutics in LbL assembled NDDS are summarized. The state-of-art targeted delivery of LbL assembled NDDS, with special attention to the elaborately control over the passive and active targeting delivery, are represented. Then the controlled release of LbL assembled NDDS with various stimulus responsiveness are systematically reviewed. Finally, conclusions and perspectives on further advancing the LbL assembled NDDS toward more powerful and versatile platforms for cancer therapy are discussed.     

Advances in colon-targeted nano-drug delivery systems: challenges and solutions

Archives of Pharmacal Research - Nano-drug delivery systems (NDDS) for colon-targeted drug delivery are an active area of research on local diseases affecting the colon, such as ulcerative colitis,...     

Microfluidics for nano-drug delivery systems: From fundamentals to industrialization

In recent years,owing to the miniaturization of the fluidic environment,micro fluidic technology offers unique opportunities for the implementation of nano drug delivery systems(NDDSs) production processes.Compared with traditional methods,microfluidics improves the controllability and uniformity of NDDSs.The fast mixing and laminar flow properties achieved in the microchannels can tune the physicochemical properties of NDDSs,including particle size,distribution and morphology,resulting in narro...     

眼部给药系统的研究进展

由于眼部特殊的生理结构与诸多屏障的存在,传统的眼用制剂存在生物利用度低、眼内保留时间短以及刺激性强等问题,常常难以达到预期治疗效果。近年来,各种新技术如纳米技术、植入技术、接触镜片的研究和应用,使得眼部给药有了长足的发展。其中纳米材料具有尺寸小、可降解、靶向性强以及对生物组织刺激性小等特点,多种纳米载体如聚合物胶束、纳米粒、纳米混悬液、脂质体与纳米乳等,已被广泛用于眼部给药系统。目前以上多种新技术在眼部给药系统中显示出良好的应用前景。笔者就近年来这方面的研究与应用作一综述,以期为眼部给药系统的研发提供参考。     

脑靶向给药方式及研究进展

血脑屏障（BBB）是一层连续的、覆盖在99％脑毛细血管表面的内皮细胞膜,由三部分组成：最内层是脑毛细血管内皮细胞及其之间的紧密连接,中间层为基质和周细胞,最外层是星形胶质细胞和细胞外基质。脑毛细血管内皮细胞间的紧密连接和彼此间的互相重叠（物理性）、