Science News
from research organizations

Genetic predisposition found for noise-induced hearing loss

Date:
April 16, 2015
Source:
University of Southern California - Health Sciences
Summary:
In a new genome-wide association study, an international team of neuroscientists has found evidence that some people may be more genetically susceptible to noise-induced hearing loss than others.
Share:
FULL STORY

In a new genome-wide association study, an international team led by Keck Medicine of the University of Southern California (USC) neuroscientists has found evidence that some people may be more genetically susceptible to noise-induced hearing loss than others.

Noise-induced hearing loss is one of the most common work-related illnesses in the United States, according to the National Institute for Occupational Safety and Health. At especially high risk are troops in the Armed Forces. In 2013, the Department of Veterans Affairs reported hearing loss as one of the most common disabilities among veterans receiving disability compensation.

Those at higher, genetic risk for hearing loss may decide to take additional precautionary measures to protect their hearing prior to hazardous noise exposure, study authors say.

"Understanding the biological processes that affect susceptibility to hearing loss due to loud noise exposure is an important factor in reducing the risk," said Keck Medicine of USC otologist Rick A. Friedman, M.D., Ph.D., professor of otolaryngology and neurosurgery at the Keck School of Medicine of USC and senior author of the study. "We have made great advances in hearing restoration, but nothing can compare to protecting the hearing you have and preventing hearing loss in the first place."

The study, "Genome-wide association study identifies Nox3 as a critical gene for susceptibility to noise-induced hearing loss," appears in the April 16 edition of PLOS Genetics, a peer-reviewed scientific journal.

While some gene association studies on noise-induced hearing loss in people have been conducted in the past, all were very small and their results un-replicated. Genome-wide association studies, or GWAS, search the entire genome for common genetic variants to see if any of those variants are associated with a trait. Mouse GWAS have lead to the discovery of hundreds of genes involved in complex traits that have immediate relevance to people.

In the USC study, conducted at the Zilkha Neurogenetic Institute, Friedman's team identified the Nox3 gene, which is almost exclusively expressed in the inner ear, as a key gene for susceptibility to noise-induced hearing loss. Using 64 of the 100 strains of mice in the Hybrid Mouse Diversity Panel, the team was able to increase the statistical power of its investigation, leading to the first published GWAS for noise-induced hearing loss in mice.

More research is necessary before clinical recommendations can be made.


Story Source:

Materials provided by University of Southern California - Health Sciences. Note: Content may be edited for style and length.


Journal Reference:

  1. Joel Lavinsky, Amanda L. Crow, Calvin Pan, Juemei Wang, Ksenia A. Aaron, Maria K. Ho, Qingzhong Li, Pehzman Salehide, Anthony Myint, Maya Monges-Hernadez, Eleazar Eskin, Hooman Allayee, Aldons J. Lusis, Rick A. Friedman. Genome-Wide Association Study Identifies Nox3 as a Critical Gene for Susceptibility to Noise-Induced Hearing Loss. PLOS Genetics, 2015; 11 (4): e1005094 DOI: 10.1371/journal.pgen.1005094

Cite This Page:

University of Southern California - Health Sciences. "Genetic predisposition found for noise-induced hearing loss." ScienceDaily. ScienceDaily, 16 April 2015. <www.sciencedaily.com/releases/2015/04/150416145536.htm>.
University of Southern California - Health Sciences. (2015, April 16). Genetic predisposition found for noise-induced hearing loss. ScienceDaily. Retrieved May 23, 2017 from www.sciencedaily.com/releases/2015/04/150416145536.htm
University of Southern California - Health Sciences. "Genetic predisposition found for noise-induced hearing loss." ScienceDaily. www.sciencedaily.com/releases/2015/04/150416145536.htm (accessed May 23, 2017).

RELATED STORIES