Photobiomodulation for traumatic brain injury and stroke

Area of Science:

• Neuroscience
• Biomedical Engineering
• Regenerative Medicine

Background:

• Traumatic brain injury (TBI) is a global health crisis with limited treatment options.
• Photobiomodulation (PBM) utilizes red or near-infrared light to promote cellular healing and function.
• PBM's mechanisms include enhanced mitochondrial activity, improved blood flow, reduced inflammation, and neuroprotection, suggesting TBI therapeutic potential.

Purpose of the Study:

• To explore the potential of Photobiomodulation (PBM) as a therapeutic intervention for acute and chronic traumatic brain injury (TBI).
• To review the mechanisms of action of PBM and its effects on brain tissue and function relevant to TBI recovery.

Main Methods:

• Review of existing literature on PBM applications in TBI models and human studies.
• Analysis of PBM's effects on cellular processes, neuroinflammation, neurogenesis, and cognitive functions.
• Examination of clinical trial outcomes and neuroimaging findings in TBI patients treated with PBM.

Main Results:

• Animal studies demonstrate PBM's efficacy in improving neurological function, memory, and reducing brain damage post-TBI.
• PBM enhances neurogenesis, BDNF synthesis, and synaptogenesis, aiding brain self-repair.
• Human studies show PBM improves cognitive functions (e.g., executive function, working memory), mood, sleep, and modulates brain network activity in TBI patients.

Conclusions:

• PBM exhibits significant potential as a non-invasive therapeutic strategy for both acute and chronic traumatic brain injury.
• The multifaceted mechanisms of PBM support its role in promoting brain repair and functional recovery following TBI.
• Further clinical research is warranted to optimize PBM protocols for widespread TBI treatment.