Modeling early events in Francisella tularensis pathogenesis.
Modeling early events in Francisella tularensis pathogenesis.
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在弗朗西斯氏菌发病机理中建模早期事件。
DOI:
10.3389/fcimb.2014.00169
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发表时间:
2014
影响因子:
5.7
通讯作者:
Molina-París C
中科院分区:
文献类型:
--
作者:
Gillard JJ;Laws TR;Lythe G;Molina-París C
Computational models can provide valuable insights into the mechanisms of infection and be used as investigative tools to support development of medical treatments. We develop a stochastic, within-host, computational model of the infection process in the BALB/c mouse, following inhalational exposure to Francisella tularensis SCHU S4. The model is mechanistic and governed by a small number of experimentally verifiable parameters. Given an initial dose, the model generates bacterial load profiles corresponding to those produced experimentally, with a doubling time of approximately 5 h during the first 48 h of infection. Analytical approximations for the mean number of bacteria in phagosomes and cytosols for the first 24 h post-infection are derived and used to verify the stochastic model. In our description of the dynamics of macrophage infection, the number of bacteria released per rupturing macrophage is a geometrically-distributed random variable. When combined with doubling time, this provides a distribution for the time taken for infected macrophages to rupture and release their intracellular bacteria. The mean and variance of these distributions are determined by model parameters with a precise biological interpretation, providing new mechanistic insights into the determinants of immune and bacterial kinetics. Insights into the dynamics of macrophage suppression and activation gained by the model can be used to explore the potential benefits of interventions that stimulate macrophage activation.
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影响因子:
2
作者:
Marino, Simeone;El-Kebir, Mohammed;Kirschner, Denise
通讯作者:
Kirschner, Denise
DOI:
10.1073/pnas.0904846106
发表时间:
2009-07-07
影响因子:
11.1
作者:
Day, Judy;Friedman, Avner;Schlesinger, Larry S.
通讯作者:
Schlesinger, Larry S.
影响因子:
3.1
作者:
Golovliov, I;Baranov, V;Sjöstedt, A
通讯作者:
Sjöstedt, A
DOI:
10.1089/bsp.2013.0067
发表时间:
2014-02-01
期刊:
BIOSECURITY AND BIOTERRORISM-BIODEFENSE STRATEGY PRACTICE AND SCIENCE
影响因子:
--
作者:
Gutting, Bradford
通讯作者:
Gutting, Bradford
影响因子:
6.7
作者:
Dai S;Rajaram MV;Curry HM;Leander R;Schlesinger LS
通讯作者:
Schlesinger LS