共查询到20条相似文献,搜索用时 15 毫秒
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经皮给药系统(TDDS)可避免首关效应、胃肠道破坏,为新型皮肤给药系统,可通过控制释放而延长治疗效果,成为药物制剂开发研究的热点之一。但是,药物的理化性质以及皮肤屏障影响药物的经皮吸收。综述了TDDS常用的促渗透技术,包括化学、物理、纳米、天然促渗透技术;介绍了促渗透能力的测定方法,包括体外、离体和体内评估皮肤渗透性的方法。通过对经皮药物递送系统和经皮吸收能力测定方法的归纳与总结,以期为TDDS的合理使用和快速发展提供参考。 相似文献
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脂质体经皮给药研究进展 总被引:4,自引:0,他引:4
目的:分析总结近年来国外脂质体经皮或黏膜给药研究的特点和应用进展。方法:对近年来脂质体药物特点,主要对在皮肤疾病和美容方面,对局部伤口的治疗,在皮肤损伤和保护中的应用,在眼科疾病中的应用进行综述。结果与结论:脂质体是一种很好的定向药物载体,它的应用范围将越来越广 相似文献
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微针是经皮给药的物理促渗方法之一,有着很好的市场前景。本文介绍微针的透皮促渗机制、促进药物经皮渗透的因素、复合技术以及微针在大分子经皮促渗中的应用。 相似文献
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《Expert opinion on drug delivery》2013,10(2):195-205
Introduction: Transdermal drug delivery possesses superior advantages over other routes of administration, particularly minimizing first-pass metabolism. Transdermal drug delivery is challenged by the barrier nature of skin. Numerous technologies have been developed to overcome the relatively low skin permeability, including spray-on transdermal systems.Areas covered: A transdermal spray-on system (TSS) usually consists of a solution containing the drug, a volatile solvent and in many cases a chemical penetration enhancer. TSS promotes drug delivery via the complex interplay between solvent evaporation and drug–solvent drag into skin. The volatile solvent carries the drug into the upper layers of the stratum corneum, and as the volatile solvent evaporates, an increase in the thermodynamic activity of the drug occurs resulting in an increased drug loading in skin.Expert opinion: TSS is easily applied, delivering flexible drug dosage and associated with lower incidence of skin irritation. TSS provides a fast-drying product where the volatile solvent enables uniform drug distribution with minimal vehicle deposition on skin. TSS ensures precise dose administration that is aesthetically appealing and eliminates concerns of residual drug associated with transdermal patches. Furthermore, it provides a better alternative to traditional transdermal products due to ease of product development and manufacturing. 相似文献
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透皮吸收促进剂在经皮给药系统中的质控和评价方法 总被引:1,自引:0,他引:1
透皮吸收制剂是国际上第三代药物制剂的研究重点领域。透皮吸收促进剂在处方中的合理应用和质量控制及其评价方法日益重要。通过对透皮促进机理、协同作用等的探讨,介绍透皮吸收促进剂的选用原则,并对透皮给药制剂和局部用药局部起效的皮肤外用制剂处方中使用的要求加以讨论,介绍了现有的评价方法和基本的技术要求。 相似文献
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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。 相似文献
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与传统的口服和肠外给药途径相比,经皮给药系统作为一种非侵入性替代方法非常有吸引力.特别对于儿童患者,它有助于克服该群体特有的问题,如吞咽困难、口服制剂的适口性以及与针头相关的恐惧和疼痛.然而,儿童的皮肤屏障功能有效地限制了药物的经皮吸收.微针可突破皮肤最外层的角质层,增加经皮给药的药量.过去几十年,以微针为基础药物输送... 相似文献
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AbstractToday, ~74% of drugs are taken orally and are not found to be as effective as desired. To improve such characteristics, transdermal drug delivery was brought to existence. This delivery system is capable of transporting the drug or macromolecules painlessly through skin into the blood circulation at fixed rate. Topical administration of therapeutic agents offers many advantages over conventional oral and invasive techniques of drug delivery. Several important advantages of transdermal drug delivery are prevention from hepatic first pass metabolism, enhancement of therapeutic efficiency and maintenance of steady plasma level of the drug. Human skin surface, as a site of drug application for both local and systemic effects, is the most eligible candidate available. New controlled transdermal drug delivery systems (TDDS) technologies (electrically-based, structure-based and velocity-based) have been developed and commercialized for the transdermal delivery of troublesome drugs. This review article covers most of the new active transport technologies involved in enhancing the transdermal permeation via effective drug delivery system. 相似文献
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对近几年来上市的经皮制剂进行文献整理和归纳,通过查阅相关文献,对贴剂、软膏剂、凝胶剂、乳膏剂、泡沫剂、洗剂等经皮给药制剂的特点、上市时间、作用、不良反应等进行总结。经皮制剂是药物通过皮肤吸收的一类外用递药给药系统,可以局部给药也可以全身给药,具有安全性高、毒副作用小、使用方便的优点,是目前国内外研究的热点。 相似文献
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《Expert opinion on drug delivery》2013,10(10):1107-1120
Transdermal ultrasound-mediated drug delivery has been studied as a method for needle-less, non-invasive drug administration. Potential obstacles include the stratum corneum, which is not sufficiently passively permeable to allow effective transfer of many medications into the bloodstream without active methods. A general review of the transdermal ultrasound drug delivery literature has shown that this technology offers promising potential for non-invasive drug administration. Included in this review are the reported acoustic parameters used for achieving delivery, along with the known intensities and exposure times. Ultrasound mechanisms are discussed as well as spatial field characteristics. Accurate and precise quantification of the acoustic field used in drug delivery experiments is essential to ensure safety versus efficacy and to avoid potentially harmful bioeffects. 相似文献
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制备了非洛地平-美托洛尔复方经皮给药系统,并研究其药剂学性质及经兔皮肤给药的药代动力学和生物利用度。先建立了同时测定贴剂和经皮渗透液中非洛地平与美托洛尔含量的RP-HPLC方法,以考察贴剂的药物体外稳态透皮速率和经皮渗透机制,并进行质量控制和评价;再以高灵敏度的GC-ECD方法分别测定非洛地平和美托洛尔的血药浓度,研究贴剂经皮给药后在兔体内的药代动力学和生物利用度。结果显示,该给药系统的复方药物体外透皮转运具有零级动力学特征,其含量均匀度检查符合2005版中国药典规定,稳定性好;经皮给药的血药浓度明显较口服平稳,且波动性小,达峰时间推后,持效时间延长,非洛地平与美托洛尔的相对生物利用度分别为275.37%和189.76%。以上结果表明,非洛地平-美托洛尔复方经皮给药系统具有明显缓释特征,可较长时间维持稳定有效的血药浓度。 相似文献
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《Expert opinion on drug delivery》2013,10(4):513-533
Importance of the field: Microneedles are small-scale devices that are finding use for transdermal delivery of protein-based pharmacologic agents and nucleic acid-based pharmacologic agents; however, microneedles prepared using conventional microelectronics-based technologies have several shortcomings, which have limited translation of these devices into widespread clinical use.Areas covered in this review: Two-photon polymerization is a laser-based rapid prototyping technique that has been used recently for direct fabrication of hollow microneedles with a wide variety of geometries. In addition, an indirect rapid prototyping method that involves two-photon polymerization and polydimethyl siloxane micromolding has been used for fabrication of solid microneedles with exceptional mechanical properties.What the reader will gain: In this review, the use of two-photon polymerization for fabricating in-plane and out-of-plane hollow microneedle arrays is described. The use of two-photon polymerization-micromolding for fabrication of solid microneedles is also reviewed. In addition, fabrication of microneedles with antimicrobial properties is discussed; antimicrobial microneedles may reduce the risk of infection associated with the formation of channels through the stratum corneum.Take home message: It is anticipated that the use of two-photon polymerization as well as two-photon polymerization-micromolding for fabrication of microneedles and other microstructured drug delivery devices will increase over the coming years. 相似文献