Recovery of skin barrier after stratum corneum removal by microdermabrasion.
Microdermabrasion is widely used as a non-invasive cosmetic technique that has recently been adapted to selectively remove stratum corneum to increase skin permeability for transdermal drug delivery. This study measured the kinetics of skin barrier recovery after stratum corneum removal using microdermabrasion in hairless guinea pigs. The skin was abraded at two sites on each animal, one of which was allowed to recover under occlusion while the other remained non-occluded. Histological measurements showed that skin barrier properties to sulforhodamine B largely recovered within 12 h, and the stratum corneum appeared largely reformed within 24 h for both occluded and non-occluded skin. Skin electrical resistance measurements showed significant recovery of the skin barrier within 24 h. We conclude that transdermal drug delivery may occur for up to 12 h after microdermabrasion in guinea pigs; however, humans will probably have a longer recovery time due to expected slower skin healing rates.
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, USA.
Samantha
S
Andrews
Jeong Woo
JW
Lee
Mark
M
Prausnitz
D000279:Administration, Cutaneous; D000818:Animals; D003869:Dermabrasion; D017097:Electric Impedance; D005456:Fluorescent Dyes / Q000008:administration & dosage / Q000378:metabolism*; D006168:Guinea Pigs; D007700:Kinetics; D010539:Permeability; D020127:Recovery of Function; D012235:Rhodamines / Q000008:administration & dosage / Q000378:metabolism*; D012867:Skin / Q000378:metabolism* / Q000473:pathology; D012869:Skin Absorption; D014945:Wound Healing
D005456:Fluorescent Dyes; D012235:Rhodamines; C022027:lissamine rhodamine B