Dynamic model of vascular-targeted photodynamic therapy

Dynamic model of vascular-targeted photodynamic therapy
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血管靶向光动力治疗的动力学模型

DOI:
10.1080/10255842.2017.1331344
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发表时间:
2017-05
影响因子:
1.6
通讯作者:
Zhao Yi
Zhao Yi
中科院分区:
工程技术4区
文献类型:
--
作者:
Hu Xiao-ming;He Linhuan;Zhao Yi

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摘要血管靶向光动力学疗法在治疗鲜红斑痣方面已显示出有效性。提出了一个包含血流、动力学扩散、氧和光敏剂的消耗和反应以及光调制的动力学模型来揭示光、光敏剂和氧之间的相互作用。模拟结果表明,与心跳同步的脉冲光调制具有增加单线态氧积累、提高氧浓度和降低温度的优点。同时,恒光处理有利于提高温度,降低总氧浓度和单线态氧积累。因此,优化的治疗方案可能涉及光毒性、缺氧和光热效应之间的平衡。
Abstract Vascular-targeted photodynamic therapy has shown efficiency in treating port wine stains. A dynamic model that incorporates blood flow, kinetic diffusion, oxygen and photosensitizer consumption and reaction, and light modulation is proposed to reveal the interactions among light, photosensitizer, and oxygen. Simulation results show that pulse light modulation synchronized with heartbeats hold the advantage of increased singlet oxygen accumulation, higher oxygen concentration and lower temperature. Meanwhile, constant light treatment is advantageous in terms of higher temperature, lower total oxygen concentration and singlet oxygen accumulation. Therefore, the optimized treatment protocol may involve a balance among the phototoxicity, hypoxia, and photothermolysis.
DOI: 10.1002/lsm.20028
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