叶酸间接的Mg/Al分层双氧化物 - 一个多功能纳米混合输送系统用于局部应用
Phumelele Kleyi1, Vusani Mandiwana1, Marinda de Beer1
1Centre for Nanostructured and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria 0001, South Africa.
ACS omega
|December 16, 2024
概括
研究人员开发了一种新型纳米混合体,使用分层双氧化物 (LDHs) 来在护肤中提供叶酸 (FA). 这种LDH-FA纳米混合增强局部配方的稳定性,并有效地通过皮肤传递FA.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 皮肤病学 皮肤病学
背景情况:
- 皮肤的屏障功能限制了活性分子的局部传递.
- 纳米技术为增强透皮传递提供了解决方案.
- 层状双氧化物 (LDHs) 是用于药物输送的有希望的纳米材料.
研究的目的:
- 为局部应用开发和表征叶酸 (FA) 间接的LDH纳米混合体.
- 为了评估FA-LDH纳米混合物的物理化学和生物特性,在一个油在水乳液中.
- 评估来自纳米混合配方的FA的受控释放和通过皮肤透.
主要方法:
- 合成Mg/Al LDH与FA交叠的共同沉方法.
- 使用X射线衍射 (XRD) 和富里埃变换红外光谱 (FTIR) 进行了表征.
- 一种含有FA-LDH纳米混合物的油在水乳液的配方.
- 在体外释放研究,学分析,细胞毒性测定 (HaCaT细胞) 和透皮透实验 (弗朗兹扩散细胞).
主要成果:
- XRD和FTIR证实了FA成功插入LDH中间层.
- 该FA-LDH纳米混合体表现出与自由FA相比的抗氧化活性.
- 使用纳米混合物的配方显示出改善的质性质 (流动行为,产量压力,储存模量).
- 在HaCaT细胞中没有观察到细胞毒性.
- 实验室研究表明,依赖于pH的受控释放和有效的FA的通过皮肤透.
结论:
- FA-LDH纳米混合是一种稳定且有效的载体,用于局部FA的输送.
- 纳米混合增强了护肤配方的稳定性和质量.
- 这种纳米混合体显示出作为局部应用的多功能活性成分的巨大潜力.
相关概念视频
Modified-Release Drug Delivery Systems: Rate-Programmed II
Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
Modified-Release Drug Delivery Systems: Site-Targeted
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
Oral Drug Delivery Systems: Continuous-Release Systems
Continuous-release drug delivery systems offer a strategic approach to maintaining therapeutic drug levels over extended periods following oral administration. By modulating the release rate of active pharmaceutical ingredients, these systems minimize fluctuations in plasma concentrations, which enhances clinical efficacy and reduces the need for frequent dosing. Such characteristics make them particularly advantageous in managing chronic diseases where patient adherence and stable drug...
Oral Drug Delivery Systems: Delayed-Release Systems
Delayed-release drug delivery systems are specialized pharmaceutical formulations designed to postpone the release of active compounds until the drug reaches a specific region of the gastrointestinal (GI) tract, typically the intestine. These systems are essential for drugs that may cause gastric irritation, are unstable in acidic environments, or need to exert therapeutic effects locally in the intestinal or colonic regions.The core feature of delayed-release systems is the use of enteric...


