Abstract
The percutaneous absorption of benzole acid across human skin in vitro was experimentally and mathematically modeled. Skin partition coefficients were measured over a range of benzoic acid concentrations in both saline and distilled water. The permeation of benzoic acid was measured across isolated stratum corneum, stratum corneum and epidermis, and split-thickness skin. These experiments demonstrated that the stratum corneum was the rate-limiting barrier and that the flux is proportional to the concentration of the undissociated species. The permeation data were analyzed with a comprehensive non-steady-state mathematical model of diffusion across skin. Two adjustable parameters, the effective skin thickness and diffusivity, were fit to the permeation data by nonlinear regression.
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REFERENCES
A. S. Michaels, S. K. Chandrasekaran, and J. E. Shaw. AIChE J. 21:985–996 (1975).
T. J. Franz. J. Invest. Dermatol. 64:190–195 (1975).
R. J. Scheuplein. J. Invest. Dermatol. 45:334–346 (1965).
R. L. Bronaugh and T. J. Franz. Br. J. Dermatol. 115:1–11 (1986).
E. R. Cooper. J. Control. Release 1:153–156 (1984).
D. Dupois, A. Rougier, R. Roguet, and C. Lotte. Br. J. Dermatol. 115:233–238 (1986).
R. H. Guy and J. Hadgraft. Int. J. Pharm. 11:187–197 (1982).
R. J. Scheuplein and L. W. Ross. J. Invest. Dermatol. 62:353–360 (1974).
G. D. Silcox, G. E. Parry, A. L. Bunge, L. K. Pershing, and D. W. Pershing. Pharm. Res. 7, in press (1990).
B. W. Barry. In J. Swarbrick (ed.), Dermatological Formulations, Marcel Dekker, New York, 1983.
P. M. Elias. Int. J. Dermatol. 20:1–19 (1981).
W. H. Press, B. P. Flannery, S. A. Teukolsky, and W.T. Vetterling. Numerical Recipes, Cambridge University Press, New York, 1986, pp. 523–528.
A. M. Kligman and E. Christophers. Arch. Dermatol. 88:70–73 (1963).
C. D. Yu, J. L. Fox, N. F. N. Ho, and W. I. Higuchi. J. Pharm. Sci. 68:1347–1357 (1979).
F. G. Brockman and M. J. Kilpatrick. J. Am. Chem. Soc. 56:1483–1486 (1934).
G. N. Lewis, M. Randall, K. S. Pitzer, and L. Brewer. Thermodynamics, 2nd ed., McGraw-Hill, New York, 1961.
R. H. Perry and C. H. Chilton (eds.) Chemical Engineers' Handbook, 5th ed., McGraw-Hill, New York, 1973, p. 3:149.
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Parry, G.E., Bunge, A.L., Silcox, G.D. et al. Percutaneous Absorption of Benzoic Acid Across Human Skin. I. In Vitro Experiments and Mathematical Modeling. Pharm Res 7, 230–236 (1990). https://doi.org/10.1023/A:1015861709758
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DOI: https://doi.org/10.1023/A:1015861709758