HOME >> BIOLOGY >> NEWS
Bitter or sweet? The same taste bud can tell the difference

COLUMBUS , Ohio The tongue's ability to differentiate between sweet and bitter tastes may reside in the same taste bud cells, a new study reports.

The study explains the discovery of a chemical messenger called neuropeptide Y (NPY) in taste bud cells. Though researchers have long known that NPY is active in the brain and gut, this is the first study to show that it is also active in taste bud cells.

That finding gives scientists a deeper understanding of how the human brain may distinguish between different types of tastes, said Scott Herness, the study's lead author and a professor of oral biology and neuroscience at Ohio State University .

The current study builds on previous work by Herness and his colleagues. A few years ago, the team found that another chemical messenger, cholecystokinin (CCK), is active in some taste bud cells. They think that these two peptides small proteins that let cells talk to one another have different effects in the same cells.

The researchers report their findings in this week's online edition of the Proceedings of the National Academy of Sciences.

CK may send opposite signals to the brain, depending on what kind of substance is on the tongue. Given the current findings, Herness thinks that CCK tells the brain that something bitter is on the tongue, while NPY sends a message that something sweet is being eaten.

"We were surprised to see that NPY had the exact opposite action of CCK," he said. "But this would ensure that the brain gets a clear message of what kind of taste is on the tongue."

Taste buds are really clusters of 50 to 100 cells. Nerve fibers connect each bud to the brain, but only a few of the cells in each taste bud touch these fibers. The prevailing thought was that cells that don't have a connection to a nerve fiber must have some way of sending a signal to that fiber. But researchers weren't sure how that happened.

"We knew that many taste bud cells th
'"/>

Contact: Scott Herness
Herness.1@osu.edu
614-292-2735
Ohio State University
18-Jul-2005


Page: 1 2 3

Related biology news :

1. Bitter taste identifies poisons in foods
2. Sour taste make you pucker? It may be in your genes
3. Halos and horns: Fixing the taste of diet soda
4. Can a taste for poison drive speciation?
5. New findings in smell and taste
6. Termites get the vibe on what tastes good
7. Studies of population genetics, evolution are an exercise in bad taste
8. Penn researchers discover initial steps in the development of taste
9. A human taste for rarity spells disaster for endangered species
10. Honey bee chemoreceptors found for smell and taste
11. Gene key to taste bud development identified

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/10/2019)... ... October 09, 2019 , ... Calcium & Bone Health Institute ... in Vancouver, Canada on September 23-24 for two days. The purpose of symposium ... healthy bone and to prevent calcium-related diseases. The theme of this year was ...
(Date:10/8/2019)... ... October 08, 2019 , ... ... National Research Council of Canada (NRC) to create the Laboratory of Industrial ... and in manufacturing, LIFT will offer a competitive capacity to accelerate the ...
(Date:10/8/2019)... ... October 07, 2019 , ... ... of imaging modalities such as optical projection tomography, optical coherence tomography, echocardiogram, light ... to generate these data sets inhouse, a lot of research groups struggle with ...
Breaking Biology News(10 mins):
(Date:9/24/2019)... ... 2019 , ... Drug resistance has been declared as one of the biggest ... one of the most serious concerns. Hong Kong cannot be spared from the worsening ... or a seven-fold of the figure in 2007 – the year the disease became ...
(Date:9/24/2019)... (PRWEB) , ... September 24, 2019 , ... ... stem cell company, has completed training and site qualification for clinical trial sites ... of recruitment and screening of potential clinical trial participants. , Clinical trial sites ...
(Date:9/24/2019)... CITY, S.D. (PRWEB) , ... September 24, 2019 , ... ... in funding for research led by faculty at South Dakota School of Mines ... on the tiny microbes that attach to surfaces to form a slimy and yet ...
(Date:9/17/2019)... ... September 17, 2019 , ... ... Director, Project and Clinical Supplies Management, Asia Pacific (APAC) will present at the ... Singapore, on Sept. 25-26, 2019. , On Thursday, Sept. 26, at 10:10 a.m., ...
Breaking Biology Technology:
Cached News: