Estimation of maximum transdermal flux of nonionized xenobiotics from basic physicochemical determinants.

Estimation of maximum transdermal flux of nonionized xenobiotics from basic physicochemical determinants.
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DOI:
10.1021/mp300146m
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发表时间:
2012-07-02
影响因子:
4.9
通讯作者:
Stinchcomb AL
Stinchcomb AL
中科院分区:
医学2区
文献类型:
--
作者:
Milewski M;Stinchcomb AL

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从药物递送和毒理学的角度来看,估计异生物质穿过皮肤的最大通量的能力是期望的。虽然有大量的数学模型描述的药物渗透系数的估计,有相对较少的集中在最大通量。本文报道并评价了一个简单易用的预测模型,用于估计最大透皮通量的外源性物质的基础上三个常见的分子描述符:辛醇-水分配系数的对数,分子量和熔点。所有这三种的使用都可以根据其对溶质水溶性的影响和分配到角质层脂质结构域的理论基础来证明。该模型解释了由208个条目组成的渗透数据集中81%的变异性,并且当实验数据不容易获得时,可以用于获得最大经皮通量的快速估计。
An ability to estimate the maximum flux of a xenobiotic across skin is desirable both from the perspective of drug delivery and toxicology. While there is an abundance of mathematical models describing the estimation of drug permeability coefficients, there are relatively few that focus on the maximum flux. This article reports and evaluates a simple and easy-to-use predictive model for the estimation of maximum transdermal flux of xenobiotics based on three common molecular descriptors: logarithm of octanol-water partition coefficient, molecular weight and melting point. The use of all three can be justified on the theoretical basis of their influence on the solute aqueous solubility and the partitioning into the stratum corneum lipid domain. The model explains 81% of the variability in the permeation dataset comprised of 208 entries and can be used to obtain a quick estimate of maximum transdermal flux when experimental data is not readily available.
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