Enhanced transdermal delivery of a dipeptide by dermaportation
Sarika Namjoshi1, Yan Chen, Jeffrey Edwards
1School of Pharmacy, Curtin University of Technology, Perth, WA, Australia.
Biopolymers
|June 7, 2008
Summary
Magnetic field technology, Dermaportation, significantly enhances peptide permeation across the skin. This novel method addresses peptide instability, enabling rapid delivery for dermatological and cosmetic applications.
Area of Science:
- Dermatology
- Biotechnology
- Materials Science
Background:
- Peptide applications in dermatology and cosmetics are limited by poor skin permeability and stability.
- Enhanced skin permeation is crucial for developing novel peptide-based therapies.
- Rapid delivery is essential to overcome peptide degradation in the skin.
Purpose of the Study:
- To investigate the efficacy of a novel magnetic field enhancement technology, Dermaportation, for improving peptide delivery across the skin.
- To assess the stability of a model dipeptide (Ala-Trp) during skin permeation.
- To evaluate the potential of Dermaportation for dermatological and cosmetic peptide applications.
Main Methods:
- Utilized Dermaportation-magnetic field technology for peptide delivery.
- Employed Ala-Trp as a model dipeptide to study skin permeation.
- Determined dipeptide stability under various conditions, including exposure to human epidermis.
- Measured in vitro permeability coefficient across human epidermis using passive diffusion and Dermaportation.
Main Results:
- Dermaportation significantly increased the in vitro permeability coefficient of Ala-Trp across human epidermis by over 25 times compared to passive diffusion (1.94 x 10(-2) cm/h vs. 7.7 x 10(-4) cm/h).
- Ala-Trp demonstrated instability upon exposure to human epidermis, with degradation products detected up to 6 hours post-permeation.
- Rapid delivery is indicated as crucial for maximizing the delivery of intact peptides.
Conclusions:
- Dermaportation-magnetic field technology presents a promising method for enhancing peptide permeation across the skin.
- The technology can facilitate rapid delivery, mitigating peptide degradation and maximizing the efficacy of native peptides.
- Dermaportation offers potential for new therapeutic and cosmetic applications involving peptide delivery to the skin.
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