Directly Compressed Tablets: A Novel Drug-Containing Reservoir Combined with Hydrogel-Forming Microneedle Arrays for Transdermal Drug Delivery
| Autor: | Li Zhao, Dk Siti Zawanah Binti Pg Hj Zahari, Ismaiel Tekko, Nava Shterman, Ryan F. Donnelly, Galit Levin, Aaron J. Courtenay, Aoife M. Rodgers, Helen O. McCarthy, Stephen Kelly, Anastasia Ripolin, Helen L. Quinn, Bridie Dutton, Etgar Levy-Nissenbaum, Lilach Steiner, Emma McAlister, Lalitkumar K. Vora |
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| Rok vydání: | 2020 |
| Předmět: |
Drug
Vinyl alcohol Microinjections media_common.quotation_subject Biomedical Engineering Pharmaceutical Science 02 engineering and technology 010402 general chemistry Administration Cutaneous 01 natural sciences Biomaterials chemistry.chemical_compound Drug Delivery Systems Pharmacokinetics In vivo Animals Transdermal media_common Skin Aqueous solution Chromatography Aqueous medium Hydrogels 021001 nanoscience & nanotechnology 0104 chemical sciences Rats In vitro permeation chemistry Needles 0210 nano-technology Tablets |
| Zdroj: | Advanced healthcare materials. 10(3) |
| ISSN: | 2192-2659 |
| Popis: | Microneedle (MN) patches consist of a hydrogel-forming MN array and a drug-containing reservoir. Drug-containing reservoirs documented in the literature include polymeric films and lyophilized wafers. While effective, both reservoir formulations are aqueous based, and so degradation can occur during formulation and drying for drugs inherently unstable in aqueous media. The preparation and characterization of novel, nonaqueous-based, directly compressed tablets (DCTs) for use in combination with hydrogel-forming MN arrays are described for the first time. In this work, a range of drug molecules are investigated. Precipitation of amoxicillin (AMX) and primaquine (PQ) in conventional hydrogel-forming MN arrays leads to use of poly(vinyl alcohol)-based MN arrays. Following in vitro permeation studies, in vivo pharmacokinetic studies are conducted in rats with MN patches containing AMX, levodopa/carbidopa (LD/CD), and levofloxacin (LVX). Therapeutically relevant concentrations of AMX (≥2 µg mL-1 ), LD (≥0.5 µg mL-1 ), and LVX (≥0.2 µg mL-1 ) are successfully achieved at 1, 2, and 1 h, respectively. Thus, the use of DCTs offers promise to expand the range of drug molecules that can be delivered transdermally using MN patches. |
| Databáze: | OpenAIRE |
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