Energy supply to the ear is critical for hearing function since the ear is one of the highest energy consuming organs. Insufficient energy can result from insufficient blood flow to the cochlea contributing to a wide range of clinical hearing disorders such as loud sound-induced hearing loss, hearing loss related to ageing, and sudden deafness, which can largely impact the quality of human life by causing individual communication problems and social isolation. We believe that success in repair and regeneration of hearing function following loss of sensory cells requires parallel restoration or maintenance of an efficient blood supply. Most recent evidence has shown a highly interplay between pathological-induced neurogenesis and angiogenesis. Angiogenesis in brain has been shown to be critical in coupling of improving neurological functional recovery after injury. The objective of this two year application is to develop a therapeutic strategy for improving cochlear ion homeostasis, particularly focused on restoring microvascular function. Our specific goal is to determine the regenerative capacity of the vasculature in the mouse cochlea. Ultimately this research will lead to innovative treatments for hearing loss involving disruption of cochlear homeostasis in peripheral blood flow.

Public Health Relevance

Insufficient blood flow to the cochlea is one of major contributing factors in a wide range of clinical hearing disorders. These disorders include loud sound-induced hearing loss, ageing-related hearing loss, and sudden deafness, all of which impact quality of life by causing communication problems and social isolation. The focus of the study is on restoration of the normal function of damaged vasculature in the cochlea helping to facilitate hearing recovery.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Exploratory/Developmental Grants (R21)
Project #
1R21DC016157-01
Application #
9298262
Study Section
Auditory System Study Section (AUD)
Program Officer
Cyr, Janet
Project Start
2017-04-01
Project End
2019-03-31
Budget Start
2017-04-01
Budget End
2018-03-31
Support Year
1
Fiscal Year
2017
Total Cost
Indirect Cost
Name
Oregon Health and Science University
Department
Otolaryngology
Type
Schools of Medicine
DUNS #
096997515
City
Portland
State
OR
Country
United States
Zip Code
97239