Krogh-cylinder and infinite-domain models for washout of an inert diffusible solute from tissue.
Krogh-cylinder and infinite-domain models for washout of an inert diffusible solute from tissue.
复制标题
用于从组织中冲洗惰性扩散溶质的克罗圆柱体和无限域模型。
DOI:
10.1111/micc.12180
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Secomb,TimothyW
中科院分区:
文献类型:
--
作者:
Secomb,TimothyW
ObjectiveModels based on the Krogh‐cylinder concept are developed to analyze the washout from tissue by blood flow of an inert diffusible solute that permeates blood vessel walls. During the late phase of washout, the outflowing solute concentration decays exponentially with time. This washout decay rate is predicted for a range of conditions.MethodsA single capillary is assumed to lie on the axis of a cylindrical tissue region. In the classic “Krogh‐cylinder” approach, a no‐flux boundary condition is applied on the outside of the cylinder. An alternative “infinite‐domain” approach is proposed that allows for solute exchange across the boundary, but with zero net exchange. Both models are analyzed, using finite‐element and analytical methods.ResultsThe washout decay rate depends on blood flow rate, tissue diffusivity and vessel permeability of solute, and assumed boundary conditions. At low blood flow rates, the washout rate can exceed the value for a single well‐mixed compartment. The infinite‐domain approach predicts slower washout decay rates than the Krogh‐cylinder approach.ConclusionsThe infinite‐domain approach overcomes a significant limitation of the Krogh‐cylinder approach, while retaining its simplicity. It provides a basis for developing methods to deduce transport properties of inert solutes from observations of washout decay rates.
登录
查看更多内容
DOI:
10.1016/0304-4157(88)90019-6
发表时间:
1988
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
K. Clemetson;E. Lüscher
通讯作者:
E. Lüscher
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ferguson,MA;Duszenko,M;Lamont,GS;Overath,P;Cross,GA
通讯作者:
Cross,GA
DOI:
10.1042/bj2440001
发表时间:
1987-05
期刊:
The Biochemical journal
影响因子:
--
作者:
Martin G. Low
通讯作者:
Martin G. Low
影响因子:
15.9
作者:
COHEN, P;WITTELS, B
通讯作者:
WITTELS, B
影响因子:
4.8
作者:
M. Schmidt;M. Schlesinger
通讯作者:
M. Schlesinger