1. In two separate studies, each with 12 healthy male volunteers, the pharmacokinetic and dynamic properties of a transdermal delivery system for bopindolol were evaluated. 2. In study I it was shown that bopindolol absorption from a 14 mg patch occurred over the whole 7-day application period. No signs of a significant skin depot were found. 3. In study II, a linear pharmacokinetic behaviour but a non-linear kinetic/dynamic relationship was established for the patches over a dose range from 7 to 21 mg. Comparable peak effects of reduction in exercise-induced tachycardia were observed after different patch doses and an i.v. injection. However, the effect was significantly prolonged with the patches compared with the injection and was maintained over 7 days. 4. The patches showed a good local and systemic tolerability in both studies over a dosing interval of up to 7 days.
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http://dx.doi.org/10.1111/j.1365-2125.1991.tb05591.x | DOI Listing |
Front Bioeng Biotechnol
January 2025
Department of Ultrasound, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China.
Gene therapy has emerged as a pivotal component in the treatment of diverse genetic and acquired human diseases. However, effective gene delivery remains a formidable challenge to overcome. The presence of degrading enzymes, acidic pH conditions, and the gastrointestinal mucus layer pose significant barriers for genetic therapy, necessitating exploration of alternative therapeutic options.
View Article and Find Full Text PDFExpert Opin Drug Deliv
January 2025
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China.
Introduction: Transdermal patches offer a unique advantage by providing extended therapeutic benefits while maintaining stable plasma drug concentration. The efficacy and safety of patches depend significantly on their ability to adhere to the skin, a feature influenced by various external and internal factors.
Areas Covered: The review primarily focuses on the fundamental aspects of adhesion in transdermal patches, including basic information about the skin, the underlying principles of adhesion, drug delivery, and adhesion characteristics of pressure sensitive adhesives (PSAs), adhesion issues, impact factors, strategies to improve patch adhesion, and relevant molecular mechanisms.
Int J Pharm
January 2025
School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou 310018, China; Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China. Electronic address:
An iontophoresis-driven porous microneedles (IPMNs) system has been developed for hyperuricemia management, which can be effectively prolong the anti-hyperuricemia effect. Porous microneedles (PMNs) with good biocompatibility, high porous volume, and excellent substance exchange capacity were firstly prepared for drug transdermal delivery and active iontophoresis.In vitro experiments showed that the transdermal delivery efficiency of anti-hyperuricemia drug (Allopurinol, AP) could be controlled using the iontophoresis current of IPMNs system.
View Article and Find Full Text PDFTher Deliv
January 2025
Institute of Pharmaceutical Research, GLA University, Mathura, India.
Aim: Development and optimization of raloxifene hydrochloride loaded lipid nanocapsule hydrogel for transdermal delivery.
Method: A 3 Box-Behnken Design and numerical optimization was performed to obtain the optimized formulation. Subsequently, the optimized raloxifene hydrochloride loaded lipid nanocapsule was developed using phase inversion temperature and characterized for physicochemical properties.
J Control Release
January 2025
Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China. Electronic address:
Adeno-associated viruses (AAV) have significant potential as vaccine carriers due to their excellent biosafety and efficient antigen gene delivery. However, most AAV vaccines show limited capacity to transduce antigen-presenting cells (APCs) following intramuscular injection which may cause inadequate cellular immune responses and undesired side effects due to transducing other tissues or cells. Herein, we developed a soluble microneedle patch for targeting the AAV vaccines to the epidermal and dermal APCs.
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