Document Type

Article

Language

eng

Publication Date

12-2015

Publisher

Springer

Source Publication

Annals of Biomedical Engineering

Source ISSN

0090-6964

Original Item ID

DOI: 10.1007/s10439-015-1353-0

Abstract

Collagen makes up a large proportion of the human body, particularly the skin. As the body ages, collagen content decreases, resulting in wrinkled skin and decreased wound healing capabilities. This paper presents a method of delivering type I collagen into porcine and human skin utilizing a polyvinylpyrrolidone microneedle delivery system. The microneedle patches were made with concentrations of 1, 2, 4, and 8% type I collagen (w/w). Microneedle structures and the distribution of collagen were characterized using scanning electron microscopy and confocal microscopy. Patches were then applied on the porcine and human skin, and their effectiveness was examined using fluorescence microscopy. The results illustrate that this microneedle delivery system is effective in delivering collagen I into the epidermis and dermis of porcine and human skin. Since the technique presented in this paper is quick, safe, effective and easy, it can be considered as a new collagen delivery method for cosmetic and therapeutic applications.

Comments

Accepted version. Annals of Biomedical Engineering, Vol. 43, No. 12 (December 2015): 2978–2990. DOI. © 2015 Biomedical Engineering Society. Used with permission.

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