1. Fabrication of a novel dissolving polymer microneedle patch for transdermal drug delivery

    Fabrication of a novel dissolving polymer microneedle patch for transdermal drug delivery

    Polymer microneedles (MNs) have gained increasing attention as a minimally invasive method for efficiently delivering drugs and vaccines in a patient-friendly manner. Herein, an easy and mild process with O2 plasma treatment was used to fabricate polyvinylpyrrolidone (PVP)/polyvinyl alcohol (PVA) MN patches, and efficient, sustained transdermal delivery was achieved. The diffusion rate of the entrained molecules could be controlled by adjusting the ratio of PVP/PVA. Optical coherence tomography was used to monitor the in vitro penetration in real time and to measure the penetration depth. Rhodamine 6G and fluorescein isothiocyanate-labeled bovine serum albumin (BSA-FITC) were used to explore ...

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