Earth Science News  





.
ABOUT US
Rare gene defect affects both pain, smell

disclaimer: image is for illustration purposes only
by Staff Writers
London (UPI) Mar 23, 2011
People with a rare genetic defect who are unable to feel pain also are unable to smell anything, as the same nerve protein is involved, U.S. researchers say.

The discovery shows nerves that detect pain and those that detect odors rely on the same protein to transmit information to the brain, ScienceNews.org reported Wednesday.

An international team of researchers examined three people who have mutations in the SCN9A gene and can't feel pain.

All of them had broken multiple bones without feeling any pain, and two had given birth painlessly, but none of the three was aware they also couldn't smell a thing, the researchers said in their study published in the journal Nature.

It's not unexpected that none of the people realized they lacked a sense of smell, experts said.

"If this was a genetic defect from birth they wouldn't even know what they were missing," Graeme Lowe, a neurophysiologist at the Monell Chemical Senses Center in Philadelphia who was not involved in the study, said.

Before this study scientists had been unaware smell and pain shared a common communication gateway.

The defect is in the SCN9A gene, which makes a protein involved in sending electrical signals to the brain, which interprets them as pain.

In the study, the team discovered odor-detecting nerve cells rely on the same protein.

Because of the missing protein, researchers say, messages sent by both pain- and odor-sensing nerves never actually make it to the brain.




Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
All About Human Beings and How We Got To Be Here



Tempur-Pedic Mattress Comparison

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
ABOUT US
A New Evolutionary History Of Primates
Washington DC (SPX) Mar 22, 2011
A robust new phylogenetic tree resolves many long-standing issues in primate taxonomy. The genomes of living primates harbor remarkable differences in diversity and provide an intriguing context for interpreting human evolution. The phylogenetic analysis was conducted by international researchers to determine the origin, evolution, patterns of speciation, and unique features in genome dive ... read more

.
Get Our Free Newsletters Via Email
  


ABOUT US
Two workers at Japan plant taken to hospital

Tsunami batters Japan's tourism industry

State of Japan's stricken nuclear reactors

Japan resumes dousing smouldering nuclear plant

ABOUT US
New Imaging Technique Provides Rapid, High-Definition Chemistry

Researchers Devise Model For Stronger Self-Healing Materials By Adding More Give

Cheap Catalyst Made Easy

Google keeps tight grip on tablet software

ABOUT US
Fish Know To Avoid The Spear

The Pacific Oyster Is In Sweden To Stay

Ancient Trash Heaps Gave Rise To Everglades Tree Islands

Developing Strategies In A Desert Watershed That Sustain Regional Water Supplies

ABOUT US
Study: 2011 arctic ice extent is down

Wheels Up for Extensive Survey of Arctic Ice

Arctic-Wide Measurements Verify Rapid Ozone Depletion In Recent Days

Pace of polar ice melt 'accelerating rapidly': study

ABOUT US
Global food scare widens from Japan nuclear plant

Carbon Tax Must Not Comprise Food And Fibre Production

Tree Resin The Key Evidence Of Current And Historic Insect Invasions

Two Rivers Water Company Signs Agreement On 1000 Acres Of Farmland

ABOUT US
Fault-Finding Coral Reefs Can Predict the Site of Coming Earthquakes

Japan death toll tops 10,000: Kyodo

Over 25 killed in Myanmar quake: officials

Over 25 killed in Myanmar quake: officials

ABOUT US
Burkina Faso soldiers freed from prison after protests

Passions stirred, Gbagbo backers "ready to die" for I.Coast

African Union demands 'immediate' halt to Libya attacks

War clouds gather over Sudan again

ABOUT US
Rare gene defect affects both pain, smell

A New Evolutionary History Of Primates

Study: More immigrant families are intact

Study: Neanderthals had control of fire


The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement