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相关超可变形囊泡(传递体、醇质体和转醇质体)的开发、表征及皮肤给药研究。

Development, characterization, and skin delivery studies of related ultradeformable vesicles: transfersomes, ethosomes, and transethosomes.

作者信息

Ascenso Andreia, Raposo Sara, Batista Cátia, Cardoso Pedro, Mendes Tiago, Praça Fabíola Garcia, Bentley Maria Vitória Lopes Badra, Simões Sandra

机构信息

Instituto de Investigação do Medicamento (iMed.ULisboa), Universidade de Lisboa, Lisboa, Portugal.

Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal.

出版信息

Int J Nanomedicine. 2015 Sep 18;10:5837-51. doi: 10.2147/IJN.S86186. eCollection 2015.

Abstract

Ultradeformable vesicles (UDV) have recently become a promising tool for the development of improved and innovative dermal and transdermal therapies. The aim of this work was to study three related UDV: transfersomes, ethosomes, and transethosomes for the incorporation of actives of distinct polarities, namely, vitamin E and caffeine, and to evaluate the effect of the carrier on skin permeation and penetration. These actives were incorporated in UDV formulations further characterized for vesicles imaging by transmission electron microscopy; mean vesicle size and polydispersity index by photon correlation spectroscopy; zeta potential by laser-Doppler anemometry; deformability by pressure-driven transport; and incorporation efficiency (IE) after actives quantification by high-performance liquid chromatography. Topical delivery studies were performed in order to compare UDV formulations regarding the release, skin permeation, and penetration profiles. All UDV formulations showed size values within the expected range, except transethosomes prepared by "transfersomal method", for which size was smaller than 100 nm in contrast to that obtained for vesicles prepared by "ethosomal method". Zeta potential was negative and higher for formulations containing sodium cholate. The IE was much higher for vitamin E- than caffeine-loaded UDV as expected. For flux measurements, the following order was obtained: transethosomes (TE) > ethosomes (E) ≥ transfersomes (T). This result was consistent with the release and skin penetration profiles for Vitamin E-loaded UDV. However, the releasing results were totally the opposite for caffeine-loaded UDV, which might be explained by the solubility and thermodynamic activity of this active in each formulation instead of the UDV deformability attending to the higher non-incorporated fraction of caffeine. Anyway, a high skin penetration and permeation for all caffeine-loaded UDV were obtained. Transethosomes were more deformable than ethosomes and transfersomes due to the presence of both ethanol and surfactant in their composition. All these UDV were suitable for a deeper skin penetration, especially transethosomes.

摘要

超可变形囊泡(UDV)最近已成为开发改良型和创新型皮肤及透皮疗法的一种有前景的工具。这项工作的目的是研究三种相关的UDV:传递体、醇质体和转醇质体,用于包封不同极性的活性成分,即维生素E和咖啡因,并评估载体对皮肤渗透和穿透的影响。这些活性成分被包封在UDV制剂中,通过透射电子显微镜对囊泡成像进行进一步表征;通过光子相关光谱法测定平均囊泡大小和多分散指数;通过激光多普勒风速仪测定zeta电位;通过压力驱动运输测定变形性;并通过高效液相色谱法对活性成分进行定量后测定包封效率(IE)。进行了局部给药研究,以比较UDV制剂的释放、皮肤渗透和穿透情况。所有UDV制剂的大小值均在预期范围内,但通过“传递体法”制备的转醇质体除外,其大小小于100 nm,而通过“醇质体法”制备的囊泡大小则相反。含有胆酸钠的制剂的zeta电位为负且更高。正如预期的那样,维生素E负载的UDV的IE远高于咖啡因负载的UDV。对于通量测量,得到以下顺序:转醇质体(TE)>醇质体(E)≥传递体(T)。该结果与维生素E负载的UDV的释放和皮肤穿透情况一致。然而,咖啡因负载的UDV的释放结果完全相反,这可能是由于该活性成分在每种制剂中的溶解度和热力学活性,而非UDV的变形性,因为咖啡因的未包封部分较高。无论如何,所有咖啡因负载的UDV均获得了较高的皮肤穿透和渗透。由于其组成中同时存在乙醇和表面活性剂,转醇质体比醇质体和传递体更具可变形性。所有这些UDV都适合更深层的皮肤穿透,尤其是转醇质体。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/be90/4583114/8f9b6b27c3e3/ijn-10-5837Fig1.jpg

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