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Monte Carlo estimates of natural variation in HIV infection

机译:蒙特卡洛估计艾滋病毒感染的自然变异

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We describe a Monte Carlo simulation of the within-host dynamics of human immunodeficiency virus I (HIV-1). The simulation proceeds at the level of individual T-cells and virions in a small volume of plasma, thus capturing the inherent stochasticity in viral replication, mutation and T-cell infection. When cell lifetimes are distributed exponentially in the Monte Carlo approach, our simulation results are in perfect agreement with the predictions of the corresponding systems of differential equations from the literature. The Monte Carlo model, however, uniquely allows us to estimate the natural variability in important parameters such as the T-cell count, viral load, and the basic reproductive ratio, in both the presence and absence of drug therapy. The simulation also yields the probability that an infection will not become established after exposure to a viral inoculum of a given size. Finally, we extend the Monte Carlo approach to include distributions of cell lifetimes that are less-dispersed than exponential. (c) 2005 Elsevier Ltd. All rights reserved.
机译:我们描述了人类免疫缺陷病毒I(HIV-1)的宿主内部动力学的蒙特卡罗模拟。模拟在少量血浆中的单个T细胞和病毒体水平进行,从而捕获了病毒复制,突变和T细胞感染中固有的随机性。当电池寿命以蒙特卡洛方法呈指数分布时,我们的仿真结果与文献中对相应微分方程组的预测完全吻合。然而,蒙特卡洛模型使我们能够独特地估算在有无药物治疗的情况下重要参数的自然变异性,例如T细胞计数,病毒载量和基本生殖比。该模拟还得出在暴露于给定大小的病毒接种物后感染不会被建立的可能性。最后,我们扩展了蒙特卡洛方法,以包括比指数分散程度较小的电池寿命分布。 (c)2005 Elsevier Ltd.保留所有权利。

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