Medicine and Health Sciences Commons^™

Loss Of Pex1 In Inner Ear Hair Cells Contributes To Cochlear Synaptopathy And Hearing Loss., Stephanie A Mauriac, Thibault Peineau, Aamir Zuberi, Cathleen Lutz, Gwénaëlle S G Géléoc

Faculty Research 2022

Peroxisome Biogenesis Disorders (PBD) and Zellweger syndrome spectrum disorders (ZSD) are rare genetic multisystem disorders that include hearing impairment and are associated with defects in peroxisome assembly, function, or both. Mutations in 13 peroxin (PEX) genes have been found to cause PBD-ZSD with ~70% of patients harboring mutations in PEX1. Limited research has focused on the impact of peroxisomal disorders on auditory function. As sensory hair cells are particularly vulnerable to metabolic changes, we hypothesize that mutations in PEX1 lead to oxidative stress affecting hair cells of the inner ear, subsequently resulting in hair cell degeneration and hearing loss. Global …