Featured Research

from universities, journals, and other organizations

U.S. Navy Medical Breakthrough To Help Millions Of Americans At Risk For Noise-Induced Hearing Loss

Date:
August 6, 1998
Source:
Office Of Naval Research
Summary:
In a medical breakthrough that will help tens of millions of Americans at risk for noise-induced hearing loss, the Naval Medical Center in San Diego has successfully tested a technique that restores hearing loss if administered within hours following exposure to loud noise. It can also "inoculate" users against hearing loss if taken before such exposure.

In a medical breakthrough that will help tens of millions of Americans at riskfor noise-induced hearing loss, the Naval Medical Center in San Diego hassuccessfully tested a technique that restores hearing loss if administeredwithin hours following exposure to loud noise. It can also "inoculate" usersagainst hearing loss if taken before such exposure.

The technique uses micro-devices or micro-catheters inserted in the earto deliver antioxidant pharmaceuticals that protect the hypersensitive haircells within the ear that are fundamental to sound detection. Thesepharmaceuticals have already been approved by the FDA for other applications; itis anticipated that the antioxidants will be on the fast track for approval forthe clinical trials using human subject of this research.

Although the ear can tolerate an amazing range of sound intensities, aday of 85 dB noise, the equivalent of standing behind a gas lawn mower, canbegin to damage the cochlea. Damage rapidly escalates with sound levelexposures to 120 dB sound pressure level, the equivalent of standing in front ofthe speakers at a rock concert. At around 130 dB sound pressure level,mechanical destruction of the inner ear begins. Excessive noise initiallydamages the inner ear by generating toxic oxygen-containing compounds thatdamage nerve endings and hair cells by chemical means. Although damage beginssoon after noise exposure, actual hair cell loss does not begin for four to fivedays and progresses over the next 40 days. This presents a window ofopportunity in which damaged hair cells may be rescued through theadministration of antioxidant pharmaceuticals.

"The techniques have already been used to treat hearing loss andMeniere's diseases, and have significant implications for treating other hearingand balance disorders in the military and civilian population," saysco-principal investigator, Dr. Richard D. Kopke, Colonel, Army Medical Corps. Sponsored by the Office of Naval Research and the U.S. Navy Bureau ofMedicine and Surgery, this research addresses issues of critical concern to theUnited States military.

FACTS:

  • The military spends more than $1.5 billion in compensation, re-training,and equipment replacement each year due to hearing and balance disorders,

  • More than 11 percent of individuals in the military are affected bythese disorders,

  • Deafness affects 30 million Americans and costs the nation $56 billionper year,

  • An additional 40 million individuals work in environments that pose asignificant threat to their hearing,

  • 50 percent of individuals suffer a balance disorder at some point duringtheir lifetime.

To further address hearing and balance problems that affect military andcivilian personnel, the Defense Spatial Orientation Center (DSOC) wasestablished. Dr. Michael Hoffer, Lieutenant Commander, Navy Medical Corps,co-principal investigator with Dr. Kopke, explains that the group is "unique inthat it brings together investigators from a number of different centers" tobring medical treatment directly to where military personnel work.


Story Source:

The above story is based on materials provided by Office Of Naval Research. Note: Materials may be edited for content and length.


Cite This Page:

Office Of Naval Research. "U.S. Navy Medical Breakthrough To Help Millions Of Americans At Risk For Noise-Induced Hearing Loss." ScienceDaily. ScienceDaily, 6 August 1998. <www.sciencedaily.com/releases/1998/08/980806090209.htm>.
Office Of Naval Research. (1998, August 6). U.S. Navy Medical Breakthrough To Help Millions Of Americans At Risk For Noise-Induced Hearing Loss. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/1998/08/980806090209.htm
Office Of Naval Research. "U.S. Navy Medical Breakthrough To Help Millions Of Americans At Risk For Noise-Induced Hearing Loss." ScienceDaily. www.sciencedaily.com/releases/1998/08/980806090209.htm (accessed October 22, 2014).

Share This



More Health & Medicine News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Working Mother (Oct. 22, 2014) Is your child ready? Video provided by Working Mother
Powered by NewsLook.com
U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

Newsy (Oct. 22, 2014) Now that the U.S. is restricting travel from West Africa, some are dropping questions about a travel ban and instead asking about visa bans. Video provided by Newsy
Powered by NewsLook.com
US to Track Everyone Coming from Ebola Nations

US to Track Everyone Coming from Ebola Nations

AP (Oct. 22, 2014) Stepping up their vigilance against Ebola, federal authorities said Wednesday that everyone traveling into the US from Ebola-stricken nations will be monitored for symptoms for 21 days. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Doctors Help Paralysed Man Walk Again, Patient in Disbelief

Doctors Help Paralysed Man Walk Again, Patient in Disbelief

AFP (Oct. 22, 2014) Polish doctors describe how they helped a paralysed man walk again, with the patient in disbelief at the return of sensation to his legs. Duration: 1:04 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins