Transcranial microtesla magnetic fields suppress neuroinflammation and neuronal oxidative stress burden

Area of Science:

• Neuroscience
• Immunology
• Biophysics

Background:

• Neuroinflammation is a key factor in neurodegenerative and psychiatric diseases.
• Existing therapies face challenges with brain penetration and efficacy.
• Noninvasive methods to modulate neuroinflammation are needed.

Purpose of the Study:

• To investigate microtesla magnetic therapy (MMT) as a noninvasive approach for neuroinflammation.
• To assess the efficacy of transcranial time-varied electromagnetic fields (TV-EMFs) in modulating neuroimmune responses.

Main Methods:

• MMT applied to human peripheral blood mononuclear cells and monocyte/macrophage lines stimulated with lipopolysaccharide (LPS).
• In vivo studies using rats with intracerebral LPS injection, with head-localized MMT.
• Evaluation of MMT's effects on cytokine release, NF-κB activation, microgliosis, astrogliosis, lesion size, and oxidative stress.

Main Results:

• MMT suppressed LPS-induced TNFα and IL-1β release and reduced NF-κB activation in immune cells.
• Repeated MMT in rats significantly decreased neuroinflammation markers (microgliosis, astrogliosis) and lesion size.
• MMT demonstrated both indirect and direct neuroprotection against cytokine-driven and paraquat-induced oxidative stress for up to 48 hours.

Conclusions:

• Transcranial MMT is a promising noninvasive biophysical therapy for neuroinflammatory conditions.
• Both acute and repetitive TV-EMF protocols show significant anti-inflammatory, antioxidant, and neuroprotective effects.
• Precisely modulated EMFs offer a safe therapeutic strategy for managing neuroinflammation.