Laboratory of Assessment and Rehabilitation of the Locomotor Apparatus (LARAL), Department of Health Sciences, Universidade Federal de Santa Catarina, Rua Pedro João Pereira, 150, room 111, Mato Alto, Araranguá, Santa Catarin, CEP 88905-120, Brazil.
Postgraduate Program in Rehabilitation Sciences, Federal University of Santa Catarina (LARAL/UFSC), Rua Pedro João Pereira, 150, Araranguá, Santa Catarina, CEP 88905-120, Brazil.
Lasers Med Sci. 2024 Nov 15;39(1):280. doi: 10.1007/s10103-024-04226-5.
The objective of this study was to ascertain the impact of photobiomodulation and radiofrequency on the healing of pressure injuries in mice. A total of 70 animals were randomly assigned to seven experimental groups. A pressure injury was induced in the dorsal region of the mice by the application of two magnets. The photobiomodulation treatment was administered at a dosage of 3.6 J per session. In the radiofrequency group, the treatment time was four minutes and the power was 22 watts. The analyses included the lesion area, infrared thermography, and the collection of material for cytokine, histological, and histochemical analyses following euthanasia. In the macroscopic analyses, the 660 nm photobiomodulation group demonstrated superior outcomes in comparison to the control group. With regard to the microscopic analyses, the greatest difference between the groups was observed when TNF-α was evaluated in the photobiomodulation group. It can be observed that the groups irradiated by electrophysical means (i.e., a combination of radiofrequency with PBM 830 nm-660 nm) exhibited a positive influence on the repair process, with the greatest impact observed in the group irradiated by a combination of radiofrequency and 660 nm photobiomodulation.
本研究旨在确定光生物调节和射频对小鼠压力性损伤愈合的影响。将 70 只动物随机分为 7 个实验组。通过施加两个磁铁在小鼠背部区域诱导压力性损伤。光生物调节治疗每次给予 3.6 J 的剂量。在射频组中,治疗时间为 4 分钟,功率为 22 瓦。分析包括损伤面积、红外热成像以及安乐死后收集细胞因子、组织学和组织化学分析材料。在宏观分析中,与对照组相比,660nm 光生物调节组的结果更优。就微观分析而言,在光生物调节组中观察到 TNF-α 之间的差异最大。可以观察到,经物理手段(即射频联合 PBM 830nm-660nm)照射的各组对修复过程有积极影响,其中射频联合 660nm 光生物调节照射的组影响最大。
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