Smelly guy? Guess what? It’s not him!!! Is your nose!...and your genes who are talking…
(http://www.abc.net.au/science/news/stories/2007/2034790.htm)
When it comes to a man's body odour, the fragrance or stench is in the nose of the beholder, according to US researchers.They suggest a single gene may determine how people perceive body odour.Their study, published online in the journal Nature, helps explain why the same sweaty man can smell like vanilla to some, like urine to others and for about a third of adults, have no smell at all."This is the first time that any human odourant receptor is associated with how we experience odours," says Assistant Professor Hiroaki Matsunami of Duke University in North Carolina.Matsunami and colleagues at Duke and Rockefeller University in New York focused on the chemical androstenone, which is created when the body breaks down the male sex hormone testosterone.Androstenone is in the sweat of men and women, but it is more highly concentrated in men.How you perceives its smell appears to have a lot to do with variations in one odour receptor gene called OR7D4."It is well known that people have different perceptions to androstenone. But people didn't know what was the basis of it," Matsunami says.To find out, researchers in his lab tested sweat chemicals on most of the 400 known odour receptors used by the nose to sniff out smells and chemicals.They found the OR7D4 gene reacted strongly with the sex steroid androstenone. Next, they tested whether variations in this gene had an impact on how people perceived the smell of androstenone in male sweat.They took blood samples and sequenced the DNA of 400 people who participated in a smell perception test done in Associate Professor Leslie Vosshall's lab at Rockefeller.
...
When it comes to a man's body odour, the fragrance or stench is in the nose of the beholder, according to US researchers.They suggest a single gene may determine how people perceive body odour.Their study, published online in the journal Nature, helps explain why the same sweaty man can smell like vanilla to some, like urine to others and for about a third of adults, have no smell at all."This is the first time that any human odourant receptor is associated with how we experience odours," says Assistant Professor Hiroaki Matsunami of Duke University in North Carolina.Matsunami and colleagues at Duke and Rockefeller University in New York focused on the chemical androstenone, which is created when the body breaks down the male sex hormone testosterone.Androstenone is in the sweat of men and women, but it is more highly concentrated in men.How you perceives its smell appears to have a lot to do with variations in one odour receptor gene called OR7D4."It is well known that people have different perceptions to androstenone. But people didn't know what was the basis of it," Matsunami says.To find out, researchers in his lab tested sweat chemicals on most of the 400 known odour receptors used by the nose to sniff out smells and chemicals.They found the OR7D4 gene reacted strongly with the sex steroid androstenone. Next, they tested whether variations in this gene had an impact on how people perceived the smell of androstenone in male sweat.They took blood samples and sequenced the DNA of 400 people who participated in a smell perception test done in Associate Professor Leslie Vosshall's lab at Rockefeller.
...
I have many experiences where everybody says there is a very bad smell on the place, and I am the only one that perceives a different odour, and also in the other way. There are some other times that someone smells something “good” and I am almost vomiting about it, jaja. “Likings are broken in genres” but it’s also true that beauty will always be beauty…fresh odours will always be fresh odours… as long as the monkey dressed with silk, will always be a monkey.
No hay comentarios:
Publicar un comentario