Navigation Links
Wake up and smell the sweat
Date:11/21/2007

Some people are oblivious to the odor in the locker room after a game, while others wrinkle their noses at the slightest whiff of sweat. Research by Prof. Doron Lancet and research student Idan Menashe of the Molecular Genetics Department, which appeared recently in PLoS Biology, has now shown that this difference is at least partly genetic.

Our sense of smell often takes a back seat to our other senses, but humans can perceive up to 10,000 different odors. Like mice, which boast a highly-developed sense of smell, we have about 1000 different genes for the smell-detecting receptors in our olfactory 'retinas.' In humans, however, over half of these genes have, in the last few million years, become defunct some in all people, while others in just parts of the population.

Lancet and his team had their experimental volunteers sniff varying concentrations of compounds that smelled like banana, eucalyptus, spearmint or sweat, and noted the sensitivity with which the subject was able to detect the odor. They then compared the results with genetic patterns of receptor gene loss and found that one gene (OR11H7P) appeared to be associated with the capacity for smelling sweat. When participants had two genes with disrupting mutations, they were likely to be impervious to the offending odor, while those that were hypersensitive to the smell had at least one intact gene.

The scientists noted, however, that while having at least one intact OR11H7P gene might determine whether you can tell by the smell that your loved one has just come from the gym, this is not the entire story. Women were generally slightly more sensitive to many smells than men, and some individuals of both sexes were better or worse in across-the-board acuity to all odorants. Finally (as is always the case), not all was in the genes environmental factors were seen to play a role as well.


'/>"/>

Contact: Yivsam Azgad
news@weizmann.ac.il
972-893-43856
Weizmann Institute of Science
Source:Eurekalert

Page: 1

Related biology news :

1. Advance in effort to fight malaria by tricking the mosquitos sense of smell
2. Gene determines whether male body odor smells pleasant
3. Sweet smell
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/22/2017)... , March 21, 2017 Vigilant ... company serving law enforcement agencies, announced today the appointment ... as director of public safety business development. ... law enforcement experience, including a focus on the aviation ... his most recent position, Mr. Sheridan served as the ...
(Date:3/20/2017)... ALLENTOWN, Pa. , March 20, 2017 ... PD 2.0 personal spirometer and Wellness Management System (WMS), ... Founded in 2010, PMD Healthcare is a ... Company with a mission dedicated to creating innovative solutions ... of life. With that intent focus, PMD developed the ...
(Date:3/13/2017)... Future of security: Biometric Face Matching software  ... ... Matching enables to match face pictures against each other or against large databases. ... Systems) ... the fastest software for biometric Face Matching on the market. The speed is ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... , March 23, 2017  GlobeImmune, Inc. today announced ... the sale of 12,835,490 shares of its common stock ... of companies. In connection with the sale of its common ... cash and issue to GlobeImmune 200,000 shares, an estimated ... "We are pleased to enter into this ...
(Date:3/23/2017)... , March 23, 2017 NetworkNewsWire Editorial ... ... putting significant strain on health care systems, in terms of ... rises, so too does the development of innovative and efficient ... effects. Among the many types of cancer treatments, a growing ...
(Date:3/23/2017)... , ... March 23, 2017 , ... ... solutions, today announced the hire of Dr. Sigmund “Sig” Floyd as Vice President ... strategic partnerships and joint development activities. , “Dr. Floyd’s career has spanned 30 ...
(Date:3/22/2017)... , March 22, 2017  UBM and the ... announce their extended partnership and the third annual Massachusetts ... by the 21 st Annual MassMEDIC Conference ... place May 3-4, 2017. MassMEDIC ... Association (ADVAMED) President and CEO, Scott Whitaker ...
Breaking Biology Technology: