International journal of surgery (London, England) · 2024
Low-energy extracorporeal shockwave therapy improves locomotor functions, tissue regeneration, and modulating the inflammation induced FGF1 and FGF2 signaling to protect damaged tissue in spinal cord injury of rat model: an experimental animal study.
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Hsu Chieh-Cheng, Wu Kay L H, Peng Jei-Ming, Wu Yi-No, Chen Hou-Tsung, Lee Meng-Shiou, Cheng Jai-Hong
Аннотация
BACKGROUND: Spinal cord injury (SCI) is a debilitating condition that results in severe motor function impairments. Current therapeutic options remain limited, underscoring the need for novel treatments. Extracorporeal shockwave therapy (ESWT) has emerged as a promising noninvasive approach for treating musculoskeletal disorders and nerve regeneration.
METHODS: This study explored the effects of low-energy ESWT on locomotor function, tissue regeneration, inflammation, and mitochondrial function in a rat SCI model. Experiments were performed using locomotor function assays, CatWalk gait analysis, histopathological examination, immunohistochemical, and immunofluorescence staining.
RESULTS: The findings demonstrated that low-energy ESWT had a dose-dependent effect, with three treatment sessions (ESWT3) showing superior outcomes compared to a single session. ESWT3 significantly improved motor functions [run patterns, run average speed, and maximum variation, as well as the Basso, Beattie, and Bresnahan score] and promoted tissue regeneration while reducing inflammation. ESWT3 significantly decreased levels of IL-1β, IL6, and macrophages (CD68) while increasing leukocyte (CD45) infiltration. Additionally, ESWT3 upregulated NueN and mitofusin 2 (MFN2), suggesting enhanced neuronal health and mitochondrial function. Moreover, ESWT3 modulated the expression of fibroblast growth factor 1 (FGF1), FGF2, their receptor FGFR1 and phosphorylation of ERK, aiding tissue repair, and regeneration in SCI.
CONCLUSIONS: This study highlights the potential of low-energy ESWT as an effective noninvasive treatment for SCI, demonstrating significant improvements in motor recovery, tissue regeneration, anti-inflammatory effects, and mitochondrial protection. These findings provide valuable insights into the mechanisms of ESWT and its therapeutic application for SCI recovery.
METHODS: This study explored the effects of low-energy ESWT on locomotor function, tissue regeneration, inflammation, and mitochondrial function in a rat SCI model. Experiments were performed using locomotor function assays, CatWalk gait analysis, histopathological examination, immunohistochemical, and immunofluorescence staining.
RESULTS: The findings demonstrated that low-energy ESWT had a dose-dependent effect, with three treatment sessions (ESWT3) showing superior outcomes compared to a single session. ESWT3 significantly improved motor functions [run patterns, run average speed, and maximum variation, as well as the Basso, Beattie, and Bresnahan score] and promoted tissue regeneration while reducing inflammation. ESWT3 significantly decreased levels of IL-1β, IL6, and macrophages (CD68) while increasing leukocyte (CD45) infiltration. Additionally, ESWT3 upregulated NueN and mitofusin 2 (MFN2), suggesting enhanced neuronal health and mitochondrial function. Moreover, ESWT3 modulated the expression of fibroblast growth factor 1 (FGF1), FGF2, their receptor FGFR1 and phosphorylation of ERK, aiding tissue repair, and regeneration in SCI.
CONCLUSIONS: This study highlights the potential of low-energy ESWT as an effective noninvasive treatment for SCI, demonstrating significant improvements in motor recovery, tissue regeneration, anti-inflammatory effects, and mitochondrial protection. These findings provide valuable insights into the mechanisms of ESWT and its therapeutic application for SCI recovery.