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博士研究生李艷的研究論文被《Colloids and Surfaces B: Biointerfaces》錄用!
來源:江國華教授個人網(wǎng)站 發(fā)布日期:2025-07-02

博士研究生李艷的研究論文“Polymeric porous microneedle-mediated transdermal metformin delivery system: A high-dose sustained-release platform for enhanced glycemic regulation”被《Colloids and Surfaces B: Biointerfaces》錄用!

Polymeric porous microneedle-mediated transdermal metformin delivery system: A high-dose sustained-release platform for enhanced glycemic regulation

 

Yan Li a,b, Sedrati Manar a,c, Xinxiang Chai a,c, Yanzhen Lou a,c, Guohua Jiang a,c,d,*

Abstract: Microneedle technology has emerged as a potential new means of painless drug delivery for diabetic patients. Maintaining blood glucose levels (BGLs) within the normal range for a long time is important for people with diabetes. However, it is a new challenge to realize long-term therapy due to insufficient drug loading. In this study, a polymeric porous microneedle array with continuous micropores was prepared by combining the microtemplate method and pore-causing agent method. By changing the ratio of a pore-causing agent, the fluid uptake capacity and mechanical strength were adjusted to balance the trade-off between rapid imbibition and the mechanical properties of puncture. A special drug loading chamber was developed to realize a large package (135.69 mg) of metformin-loaded porous microneedle system. Experiments in diabetic rat models in vivo showed that the prepared porous microneedles can effectively puncture the skin and maintain stable BGLs up to 7 h ×5 cycles over five experimental cycles (108 h) without the risk of hypoglycemia. These results suggested that the high-dose polymeric porous microneedle-mediated metformin delivery system had the advantages of rapid response and durable release, and was a potential candidate for sustained-release transdermal drug delivery in patients with diabetes mellitus and even chronic conditions.

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