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:
Microcirculation (New York, N.Y. : 1994)
影响因子:
--
通讯作者:
Secomb,TimothyW
Secomb,TimothyW
中科院分区:
--
文献类型:
--
作者:
Secomb,TimothyW

文献摘要

参考文献

相似文献

目的开发基于克罗柱概念的模型来分析渗透血管壁的惰性扩散性溶质通过血流从组织中的冲刷。在冲刷的后期阶段,流出的溶质浓度随时间呈指数衰减。这种冲刷衰减率预测的范围内的conditions.MethodsA单个毛细管假设躺在轴上的圆柱形组织区域。在经典的“Krogh‐cylinder”方法中,无通量边界条件应用于圆柱体的外部。提出了另一种“无限域”方法,该方法允许溶质交换穿过边界,但净交换为零。这两个模型进行了分析,使用有限元和分析methods.ResultsThe冲洗衰减率取决于血液流速,组织扩散率和血管渗透性的溶质,并假设边界条件。在低血液流速下,洗脱率可能超过单个充分混合隔室的值。无限域方法预测的洗脱衰减速率比Krogh-cylinder approach.ConclusionsThe无限域方法克服了一个显着的局限性的Krogh-cylinder方法,同时保持其简单性。它提供了一个基础,发展的方法来推断输运性质的惰性溶质的冲洗衰变率的观察。
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.
病理血小板中的膜糖蛋白异常。
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
DOI: 10.1172/jci106210
发表时间: 1970-01-01
影响因子: 15.9
作者:
COHEN, P;WITTELS, B
通讯作者: WITTELS, B
脂肪酸附着与水泡性口炎和辛德比斯病毒膜糖蛋白的翻译和成熟的关系。
DOI: --
发表时间: 1980
影响因子: 4.8
作者:
M. Schmidt;M. Schlesinger
通讯作者: M. Schlesinger