Navigation Links
Wake up and smell the sweat

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
Weizmann Institute of Science

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:
(Date:11/11/2015)... MINNETONKA, Minn. , Nov. 11, 2015   MedNet ... the entire spectrum of clinical research, is pleased to announce ... Partnerships in Clinical Trials (PCT) event, to be held ... will be able to view live demonstrations of ... platform, and learn how iMedNet has been able ...
(Date:11/9/2015)... 09, 2015 ... the "Global Law Enforcement Biometrics Market ... --> ) has announced the ... Biometrics Market 2015-2019" report to their ... ( ) has announced the addition ...
(Date:11/2/2015)... 2, 2015  SRI International has been awarded a ... development services to the National Cancer Institute (NCI) PREVENT ... scientific expertise, modern testing and support facilities, and analytical ... and toxicology studies to evaluate potential cancer prevention drugs. ... PREVENT Cancer Drug Development Program is an NCI-supported pipeline ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... , November 26, 2015 ... Global Biobanking Market 2016 - 2020 report analyzes ... maintaining integrity and quality in long-term samples, minimizing ... long-term cost-effectiveness. Automation minimizes manual errors such as ... technical efficiency. Further, it plays a vital role ...
(Date:11/25/2015)... BRUSSELS , November 25, 2015 ... in cat and human plaque and pave the way for ... health problems in cats     ... the most commonly diagnosed health problems in cats, yet relatively ... until now. Two collaborative studies have been conducted by researchers ...
(Date:11/25/2015)... 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ:  AEZS; TSX: ... prospects remain fundamentally strong and highlights the following ... received DSMB recommendation to continue the ZoptEC Phase ... the final interim efficacy and safety data ... men with heavily pretreated castration- and Taxane-resistant prostate ...
(Date:11/25/2015)... November 25, 2015 The ... is a professional and in-depth study on the ...      (Logo: ) , ... industry including definitions, classifications, applications and industry chain ... the international markets including development trends, competitive landscape ...
Breaking Biology Technology: