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논문 기본 정보

자료유형
학술저널
저자정보
Cho Lee, Ae-Ri (College of Pharmacy, Duksung Women's University) Moon, Hee-Kyung (College of Pharmacy, Duksung Women's University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제11호
발행연도
2007.1
수록면
1,489 - 1,495 (7page)

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초록· 키워드

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A thermal gravimetric analysis (TGA) and a differential scanning calorimetry (DSC) were carried out to characterize the water property and an alteration of lipid phase transition of stratum corneum (SC) by glycerin. In addition, the relationship between steady state skin permeation rate and skin hydration in various concentrations of glycerin was investigated. Water vapor absorption-desorption was studied in the hairless mouse stratum corneum. Dry SC samples were exposed to different conc. of glycerin (0-50%) followed by exposure to dry air and the change in weight property was monitored over time by use of TGA. In DSC study, significant decrease in ${\Delta}H$ of the lipid transition in 10% glycerin and water treated sample: the heat of lipid transition of normal, water, 10% glycerin treated SC were 6.058, 4.412 and 4.316 mJ/mg, respectively. In 10% glycerin treated SCs, the Tc of water shifts around $129^{\circ}C$, corresponding to the weakly bound secondary water. In 40% glycerin treated SC, the Tc of water shifts to $144^{\circ}C$ corresponding to strongly bound primary water. There was a good correlation between th_e hydration property of the skin and the steady state skin flux with the correlation coefficient $(r^2=0.94)$. As the hydration increased, the steady state flux increased. As glycerin concentration increased, hydration property decreased. High diffusivity induced by the hydration effect of glycerin and water could be the major contributing factor for the enhanced skin permeation of nicotinic acid (NA).

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