Photobiomodulation as a Potential Adjuvant Therapy to Improve Cochlear Implant Efficiency

Area of Science:

• Regenerative Medicine
• Otolaryngology
• Biomedical Engineering

Background:

• Hearing loss is irreversible in mammals due to limited cochlear hair cell regeneration.
• Cochlear implants (CI) bypass damaged hair cells but can cause inflammation and nerve damage.
• Existing strategies to minimize secondary cochlear damage post-CI are being investigated.

Purpose of the Study:

• To review current strategies for minimizing cochlear damage after cochlear implantation.
• To evaluate the potential of photobiomodulation (PBM) as an adjuvant therapy for cochlear implantation.
• To explore PBM's neuroprotective effects for enhancing auditory function.

Main Methods:

• Literature review of PBM applications in biological processes.
• Analysis of PBM's effects on inflammation and tissue recovery.
• Examination of PBM's potential to protect auditory cells and nerve fibers.

Main Results:

• PBM reduces inflammation and enhances tissue recovery through various pathways.
• PBM demonstrates potential for protecting auditory cells, possibly improving hearing outcomes with EAS devices.
• Postoperative CI is associated with an inflammatory response involving cytokine upregulation.

Conclusions:

• PBM shows promise as a neuroprotective strategy to mitigate secondary cochlear damage after implantation.
• Further validation is needed for PBM's application in enhancing cochlear implant efficacy.
• PBM's neuroregenerative potential could benefit patients with residual hearing undergoing cochlear implantation.