Preparation and Evaluation of Auxiliary Permeable Microneedle Patch Composed of Polyvinyl Alcohol and Eudragit NM30D Aqueous Dispersion

Poor transdermal permeability limits the possibility of most drug delivery through the skin. Auxiliary permeable microneedles (AP-MNs) with a three-dimensional network structure can effectively break the skin stratum corneum barrier and assist in the transdermal delivery of active ingredients. Herei...

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Bibliographic Details
Published in:Pharmaceutics 2023-07, Vol.15 (7), p.2007
Main Authors: Xing, Mengzhen, Ma, Yuning, Wei, Xiaocen, Chen, Chen, Peng, Xueli, Ma, Yuxia, Liang, Bingwen, Gao, Yunhua, Wu, Jibiao
Format: Article
Language:English
Subjects:
Analysis
auxiliary permeation microneedles
Drugs
Eudragit NM30D
Hydrogels
Permeability
Polyvinyl alcohol
Skin
Skin care products
skin permeability
transdermal drug delivery
Transdermal medication
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Summary:Poor transdermal permeability limits the possibility of most drug delivery through the skin. Auxiliary permeable microneedles (AP-MNs) with a three-dimensional network structure can effectively break the skin stratum corneum barrier and assist in the transdermal delivery of active ingredients. Herein, we propose a simple method for preparing AP-MNs using polyvinyl alcohol and Eudragit NM30D for the first time. To optimize the formulation of microneedles, the characteristics of swelling properties, skin insertion, solution viscosity, and needle integrity were systematically examined. Additionally, the morphology, mechanical strength, formation mechanism, skin permeability, swelling performance, biocompatibility, and in vitro transdermal drug delivery of AP-MNs were evaluated. The results indicated that the microneedles exhibited excellent mechanical-strength and hydrogel-forming properties after swelling. Further, it proved that a continuous and unblockable network channel was created based on physical entanglement and encapsulation of two materials. The 24 h cumulative permeation of acidic and alkaline model drugs, azelaic acid and matrine, were 51.73 ± 2.61% and 54.02 ± 2.85%, respectively, significantly enhancing the transdermal permeability of the two drugs. In summary, the novel auxiliary permeable microneedles prepared through a simple blending route of two materials was a promising and valuable way to improve drug permeation efficiency.
ISSN:1999-4923
1999-4923
DOI:10.3390/pharmaceutics15072007