Low frequency of repetitive trans-spinal magnetic stimulation promotes functional recovery after spinal cord injury in mice through inhibiting TGF-ß1/Smad2/3 signaling pathway.
Neurosci Lett
; 836: 137890, 2024 Jul 27.
Article
in En
| MEDLINE
| ID: mdl-38971300
ABSTRACT
Spinal cord injury (SCI) remains a worldwide challenge due to limited treatment strategies. Repetitive trans-spinal magnetic stimulation (rTSMS) is among the most cutting-edge treatments for SCI. However, the mechanism underlying rTSMS on functional recovery is still unclear. In this study, 8-week-old C57BL/6J female mice were used to design SCI models followed by treatment with monotherapy (1 Hz rTSMS or LY364947) or combination therapy (rTSMS + LY364947). Our results showed obvious functional recovery after monotherapies compared to untreated mice. Immunofluorescence results demonstrated that rTSMS and LY364947 modulate the lesion scar by decreasing fibrosis and GFAP and possess the effect on neural protection. In addition, rTSMS suppressed inflammation and the activation of TGFß1/Smad2/3 signaling pathway, as evidenced by markedly reduced TGF-ßRâ
, Smad2/3, and p-Smad2/3 compared with untreated mice. Overall, it was confirmed that 1 Hz rTSMS promotes SCI recovery by suppressing the TGFß1/Smad2/3 signaling, revealing a novel pathological mechanism of 1 Hz rTSMS intervention, and may provide potential targets for clinical treatment.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Spinal Cord Injuries
/
Signal Transduction
/
Recovery of Function
/
Smad2 Protein
/
Smad3 Protein
/
Transforming Growth Factor beta1
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Magnetic Field Therapy
/
Mice, Inbred C57BL
Limits:
Animals
Language:
En
Journal:
Neurosci Lett
Year:
2024
Document type:
Article
Country of publication:
Irlanda