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    • 3. 发明公开
    • ENHANCED ANTI-MICROBIAL PDT
    • 增强抗微生物PDT
    • EP2542305A2
    • 2013-01-09
    • EP11735020.7
    • 2011-01-13
    • CeramOptec GmbH
    • ALBRECHT, VolkerWIELAND, GerhardGITTER, BurkhardNEUBERGER, Wolfgang
    • A61N5/00A61N5/06A61K31/407A61P31/04
    • A61N5/062A61L2/0029A61L2/0052A61L2202/21A61M1/3681A61M1/3686A61N5/0624A61N2005/063A61N2005/0652
    • Present invention provides enhanced methods and improved devices to eliminate, reduce, destroy and/or inhibit undesired body fluid species, such as pathogen microbes and deteriorated or malignant cells in complex environments like blood, serum and other body fluids. In preferred embodiments, present invention provides an antimicrobial PDT treatment that effectively inactivates, reduces and/or destroys both Gram (−) and Gram (+) bacteria in complex body fluids. Methods to enhance antimicrobial PDT activity includes the steps of administering a photosensitizer to bacteria-contaminated fluid, after a dwell time guiding bacteria-contaminated fluid with photosensitizer through a channel, emitting radiation preferably in an intermittent manner, and restoring treated body fluids to corresponding body regions. Electromagnetic radiation is preferably delivered intermittently with pulse width based on treatment parameters. Preferred device embodiments comprise guiding channels and at least one electromagnetic radiation source, arranged separately or in sequence. Preferably, laser device or LED-panels are used to deliver electromagnetic radiation to activate the photosensitizer. When used with preferred photosensitizer composition based on Safranin O, preferred laser radiation wavelength is in the range of 500-580 nm. Additionally, present invention diminishes adverse host's inflammatory responses by neutralizing the biological activity of pathogenic microorganism fragments and reducing and/or removing pathogenic microorganism fragments responsible for it.
    • 本发明提供了增强的方法和改进的装置,以消除,减少,破坏和/或抑制诸如血液,血清和其他体液等复杂环境中的病原体微生物和恶化或恶性细胞等不希望的体液物质。 在优选实施方案中,本发明提供了一种抗微生物PDT治疗,其有效地灭活,减少和/或破坏复杂体液中的革兰氏阴性细菌和革兰氏阳性细菌。 增强抗微生物PDT活性的方法包括以下步骤:在用光敏剂引导细菌污染的流体通过通道,优选以间歇方式发射辐射并将经处理的体液恢复至相应的身体的驻留时间之后,将光敏剂施用于细菌污染的流体 区域。 电磁辐射优选基于治疗参数以脉冲宽度间歇地传递。 优选的设备实施例包括分开或依次布置的引导通道和至少一个电磁辐射源。 优选地,使用激光装置或LED面板来传递电磁辐射以激活光敏剂。 当与基于番红O的优选光敏剂组合物一起使用时,优选的激光辐射波长在500-580nm的范围内。 此外,本发明通过中和致病微生物片段的生物学活性并减少和/或去除对其有害的致病微生物片段来减少不利的宿主炎症反应。