Navigation Links
Bitter or sweet? The same taste bud can tell the difference

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 that have receptors f
'"/>

Source:Ohio State University


Page: 1 2 3

Related biology news :

1. Bitter taste identifies poisons in foods
2. Childrens taste sensitivity and food choices influenced by taste gene
3. Evolution of taste receptor may have shaped human sensitivity to toxic compounds
4. Bad aftertaste? New sensory on/off switch may cure bane of artificial sweetener search
5. Have a taste for fat? Yes! A sensor in the mouth promotes preference for fatty foods
6. Living taste cells produced outside the body
7. Great (taste) expectations: Study shows brain anticipates taste, shifts gears
8. Sweet water taste paradoxically predicts sweet taste inhibitors
9. How taste response is hard-wired into the brain
10. Variation in bitter-taste receptor gene increases risk for alcoholism
11. Scientists solve sour taste proteins
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bitter sweet The same taste bud can tell the difference

(Date:12/17/2014)... SM announced today its completion of a Good ... current U.S. Food and Drug Administration (FDA) regulations. This ... smart phone application trials utilizing the highest principles for ... determined to improve global healthcare access, quality, and delivery ...
(Date:12/11/2014)... Markets , http://photos.prnewswire.com/prnh/20130307/600769 ... addition of the "Biometrics Market in the APAC ... One major trend emerging in this market is advances ... important to upgrade biometric solutions to the latest standard ...
(Date:12/10/2014)... 9, 2014  Valencell, a leader in performance biometric data ... demand from its licensees for highly accurate, clinically validated ... solely coming from fitness and health sectors, but first ... wearable is only as useful as the biometric data ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... feeds on a native tree from the western Pacific island of ... are out of reach for its only local natural enemy," said ... ecologist Thomas Marler to study the relationship between the native cycad ... alien insect pest called cycad aulacaspis scale (CAS). The pest arrived ...
... comparative analysis to date of bacterial communities inhabiting the ... into why some individuals become colonized with pathogens while ... in mBio the online open-access journal published by the ... are important sites of pathogen colonization, yet the microbiota ...
... that increasing certain proteins in the blood vessels of ... The study provides new avenues for research that may ... demonstrates that cytochrome P450 plays an important role in ... enormous public health concern," said Darryl Zeldin, M.D., acting ...
Cached Biology News:Cycad pest uses small size to hide from predators 2Study examines, compares bacteria in the nose and throat 2NIH-supported study finds novel pathway may open doors for new blood pressure treatments 2
(Date:1/22/2015)... 2015  Derma Sciences, Inc. (Nasdaq: DSCI ... wound care, announces that AMNIOEXCEL® and AMNIOMATRIX®, amniotic ... to the Premier, Inc. Regenerative Skin Grafting contract ... AMNIOEXCEL® and AMNIOMATRIX® product lines, which continue to ...
(Date:12/24/2014)... NEW YORK , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, ... in critical areas, announced the closing of an underwritten public ... purchase up to an aggregate 3,500,000 shares of common stock, ... per warrant.  The warrants have a per share exercise price ...
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument ... Buffers, Valves, Guages, Seals), Accessories, Services, End User ... 2019” provides a detailed overview of the major ... strategies impacting the preparative and process chromatography market ...
(Date:12/24/2014)... SoundConnect’s 2015 next generation ... communication technology, provide continued education and inform users ... demonstrates online communication features and benefits; empowering users ... innovative and powerful tools. , According to SoundConnect’s ...
Breaking Biology Technology:Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3
... , The Isopure Buccal Cell DNA Kit is a simple, ... genomic DNA for downstream applications , such as ... collection formats using SPRI magnetic bead technology , ... , Buccal Kit effectively and consistently delivers high ...
... Agencourts RNAClean kit provides a simple, flexible and ... products generated in common enzymatic , RT and ... , gene expression analysis experiments and is easily ... eliminates the need for vacuum filtration or , ...
... Although the <A , ... Labeling Kits were developed for labeling siRNA, they can , ... can be used for this application. See "<A , ... Introduced dsRNA in Cells " for experimintal data using dsRNA , ...
Cached Biology Technology:Isopure - Buccal cell DNA isolation 2RNAClean - RNA & cDNA in vitro Reaction Purification 2Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 2Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 3Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 4
EDG-1 Western blot control Source: Cell Lysate Application: Western Blotting Control...
...
Kit containing positive control DNA all parts of the HIV-1 genome, HIV-1 negative control DNA, Primers SK38, SK39, SK19...
Request Info...
Biology Products: