Low-intensity pulsed ultrasound increases neurotrophic factors secretion and suppresses inflammation inin vitromodels of peripheral neuropathies
© 2023 IOP Publishing Ltd..
Objective. In this study, we aimed to verify the beneficial effects of low-intensity pulsed ultrasound (LIPUS) stimulation on two cell types: H2O2-treated RSC96 Schwann cells and THP-1 macrophages, used to model neuropathic inflammation.Approach. Using a set-up guaranteeing a fine control of the ultrasound dose at the target, different frequencies (38 kHz, 1 MHz, 5 MHz) and different intensities (20, 100, 500 mW cm-2) were screened to find the most effective experimental conditions for triggering beneficial effects on metabolic activity and release of neurotrophic cytokines (β-nerve growth factor, brain-derived neurotrophic factor, glial cell-derived neurotrophic factor) of RSC96 cells. The combination of parameters resulting the optimal one was applied to evaluate anti-inflammatory effects in terms of reactive oxygen species (ROS) and tumor necrosis factor-α(TNF-α) production, also investigating a possible anti-oxidant activity and mechanotransduction pathway for the anti-inflammatory process. The same optimal combination of parameters was then applied to THP-1 cells, differentiated into M1 and M2 phenotypes, to assess the effect on the expression and release of pro-inflammatory markers (TNF-α, interleukin (IL)-1β, IL-6, IL-8) and anti-inflammatory ones (IL-10 and CD206).Main results.5 MHz and 500 mW cm-2were found as the optimal stimulation parameters on RSC96 cells. Such parameters were also found to suppress ROS and TNF-αin the same cell line, thus highlighting a possible anti-inflammatory effect, involving the NF-kB pathway. An anti-oxidant effect induced by LIPUS was also observed. Finally, the same LIPUS parameters did not induce any differentiation towards the M1 phenotype of THP-1 cells, whereas they decreased TNF-αand IL-8 gene expression, reduced IL-8 cytokine release and increased IL-10 cytokine release in M1-polarized THP-1 cells.Significance.This study represents the first step towards the use of precisely controlled LIPUS for the treatment of peripheral neuropathies.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:20 |
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| Enthalten in: |
Journal of neural engineering - 20(2023), 2 vom: 11. Apr. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Fontana, Francesco [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 12.04.2023 Date Revised 23.06.2023 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1088/1741-2552/acc54e |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a Fontana, Francesco |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Low-intensity pulsed ultrasound increases neurotrophic factors secretion and suppresses inflammation inin vitromodels of peripheral neuropathies |
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| 520 | |a Objective. In this study, we aimed to verify the beneficial effects of low-intensity pulsed ultrasound (LIPUS) stimulation on two cell types: H2O2-treated RSC96 Schwann cells and THP-1 macrophages, used to model neuropathic inflammation.Approach. Using a set-up guaranteeing a fine control of the ultrasound dose at the target, different frequencies (38 kHz, 1 MHz, 5 MHz) and different intensities (20, 100, 500 mW cm-2) were screened to find the most effective experimental conditions for triggering beneficial effects on metabolic activity and release of neurotrophic cytokines (β-nerve growth factor, brain-derived neurotrophic factor, glial cell-derived neurotrophic factor) of RSC96 cells. The combination of parameters resulting the optimal one was applied to evaluate anti-inflammatory effects in terms of reactive oxygen species (ROS) and tumor necrosis factor-α(TNF-α) production, also investigating a possible anti-oxidant activity and mechanotransduction pathway for the anti-inflammatory process. The same optimal combination of parameters was then applied to THP-1 cells, differentiated into M1 and M2 phenotypes, to assess the effect on the expression and release of pro-inflammatory markers (TNF-α, interleukin (IL)-1β, IL-6, IL-8) and anti-inflammatory ones (IL-10 and CD206).Main results.5 MHz and 500 mW cm-2were found as the optimal stimulation parameters on RSC96 cells. Such parameters were also found to suppress ROS and TNF-αin the same cell line, thus highlighting a possible anti-inflammatory effect, involving the NF-kB pathway. An anti-oxidant effect induced by LIPUS was also observed. Finally, the same LIPUS parameters did not induce any differentiation towards the M1 phenotype of THP-1 cells, whereas they decreased TNF-αand IL-8 gene expression, reduced IL-8 cytokine release and increased IL-10 cytokine release in M1-polarized THP-1 cells.Significance.This study represents the first step towards the use of precisely controlled LIPUS for the treatment of peripheral neuropathies | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a LIPUS | |
| 650 | 4 | |a Schwann cells | |
| 650 | 4 | |a biophysical stimulation | |
| 650 | 4 | |a macrophages | |
| 650 | 4 | |a peripheral nerve repair | |
| 650 | 7 | |a Interleukin-8 |2 NLM | |
| 650 | 7 | |a Interleukin-10 |2 NLM | |
| 650 | 7 | |a 130068-27-8 |2 NLM | |
| 650 | 7 | |a Tumor Necrosis Factor-alpha |2 NLM | |
| 650 | 7 | |a Reactive Oxygen Species |2 NLM | |
| 650 | 7 | |a Hydrogen Peroxide |2 NLM | |
| 650 | 7 | |a BBX060AN9V |2 NLM | |
| 650 | 7 | |a Cytokines |2 NLM | |
| 650 | 7 | |a Anti-Inflammatory Agents |2 NLM | |
| 700 | 1 | |a Iacoponi, Francesco |e verfasserin |4 aut | |
| 700 | 1 | |a Orlando, Fabio |e verfasserin |4 aut | |
| 700 | 1 | |a Pratellesi, Tiziano |e verfasserin |4 aut | |
| 700 | 1 | |a Cafarelli, Andrea |e verfasserin |4 aut | |
| 700 | 1 | |a Ricotti, Leonardo |e verfasserin |4 aut | |
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