Qualitative analysis of models with different treatment protocols to prevent antibiotic resistance.

Qualitative analysis of models with different treatment protocols to prevent antibiotic resistance.
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DOI:
10.1016/j.mbs.2010.06.002
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发表时间:
2010-09
影响因子:
4.3
通讯作者:
Ruan S
Ruan S
中科院分区:
生物学4区
文献类型:
--
作者:
Sun HR;Lu X;Ruan S

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本文关注两个模型(Bonhoeffer et al., Proc. Natl.)的定性分析。学会科学。美国94(1997),12106-12111),不同的治疗方案,以防止抗生素耐药性。根据基本繁殖数R0对两种模型的平衡点的局部或全局稳定性进行了详细的定性分析。对于单一抗生素治疗模型,我们证明了如果R0 < 1,则无病平衡是全局渐近稳定的;若R0 bb0 1,则疾病地方性平衡是全局渐近稳定的。对于多种抗生素治疗的模型,分析了各种平衡的稳定性,表明联合治疗优于循环治疗。数值模拟结果表明,系统的动力学特性与参数密切相关。
This paper is concerned with the qualitative analysis of two models (Bonhoeffer et al., Proc. Natl. Acad. Sci. USA 94 (1997), 12106–12111) for different treatment protocols to prevent antibiotic resistance. Detailed qualitative analysis about the local or global stability of the equilibria of both models is carried out in term of the basic reproduction number R0. For the model with a single antibiotic therapy, we show that if R0 < 1, then the disease-free equilibrium is globally asymptotically stable; if R0 > 1, then the disease endemic equilibrium is globally asymptotically stable. For the model with multiple antibiotic therapies, stabilities of various equilibria are analyzed and combining treatment is shown better than cycling treatment. Numerical simulations are performed to show that the dynamical properties depend intimately upon the parameters.
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