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Physiological imaging of electrical trauma and therapeutic responses

机译:电气创伤与治疗反应的生理成像

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In victims of electrical trauma, electroporation of cell membrane, in which lipid bilayer is permeabilized by thermal and electrical forces, is thought to be a substantial cause of tissue damage. It has been suggested that certain mild surfactant in low concentration could induce sealing of permeabilized lipid bilayers, thus repairing cell membranes that had not been extensively damaged. With an animal model of electrically injured hind limb of rats, we have demonstrated and validated the use of radiotracer imaging technique to assess the physiology of the damaged tissues after electrical shock and of their repairs after applying surfactant as a therapeutic strategy. For example, using Tc-99m labeled pyrophosphate (PYP), which follows calcium in cellular function and is known to accumulate in damaged tissues, we have established a physiological imaging approach for assessment of the extent of tissue injury for diagnosis and surgical planning, as well as for evaluation of responses to therapy. With the use of a small, hand-held, miniature gamma camera, this physiological imaging method can be employed at patient's bedside and even in the field, for example, at accident site or during transfer for emergency care, rapid diagnosis, and prompt treatment in order to maximize the chance for tissue survival.
机译:在电创伤的受害者中,细胞膜的电穿孔,其中脂质双层通过热和电力透露透化,被认为是组织损伤的实质性原因。已经提出,低浓度的某些温和的表面活性剂可以诱导透化性脂双层的密封,从而修复尚未受到广泛损坏的细胞膜。随着大鼠电伤后肢的动物模型,我们已经证明并验证了使用放射性机构成像技术的使用,从施加表面活性剂作为治疗策略后,评估电击后的受损组织的生理学。例如,使用标记的焦磷酸盐(PYP),其遵循细胞功能钙,已知在受损的组织中积聚,我们建立了用于评估诊断和手术规划的组织损伤程度的生理成像方法,如以及评估对疗法的反应。通过使用小型,手持式微型伽马摄像头,这种生理成像方法可以在患者的床边,甚至在现场使用,例如,在意外网站或转移期间用于应急护理,快速诊断和及时治疗。为了最大化组织存活的机会。

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