Navigation Links
Route to obesity passes through tongue
Date:11/26/2008

Obesity gradually numbs the taste sensation of rats to sweet foods and drives them to consume larger and ever-sweeter meals, according to neuroscientists. Findings from the Penn State study could uncover a critical link between taste and body weight, and reveal how flab hooks the brain on sugary food.

"When you have a reduced sensitivity to palatable foods, you tend to consume it in higher amounts," said Andras Hajnal, associate professor of neural and behavioral sciences at Penn State College of Medicine. "It is a vicious circle."

Previous studies have suggested that obese persons are less sensitive to sweet taste and crave sweet foods more than lean people. However, little is known about the specific differences between obese and lean individuals in their sense of taste and the pleasure they derive from sweet foods.

Hajnal and his Penn State colleague Peter Kovacs, a post-doctoral fellow, investigated these differences by studying the taste responses of two strains -- OLETF and LETO rats.

Compared to the lean and healthy LETO rats, the taste responses in OLETF rats mirror those in obese humans. These rats have normal body weight at first, but they tend to chronically overeat due to a missing satiety signal, become obese and develop diabetes. The obese rats also show an increased preference for sweet foods and also are willing to work harder to obtain sweet solutions as a reward for their learning.

"When you have excess body weight, the brain is supposed to tell you not to eat more, or not choose high caloric meals" said Hajnal. "But this control apparently fails and thus the obesity epidemic is rising, and we want to find out how the sense of taste drives up food intake."

The researchers implanted electrodes in the rodents' brains to record the firing of nerve cells when the rats' tongues were exposed to various tastes -- salt, citric acid, plain water and six different concentrations of sucrose.

Hajnal and Kovacs specifically lo
'/>"/>

Contact: Amitabh Avasthi
axa47@psu.edu
814-865-9481
Penn State
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Thomson Reuters Adds Routes of Synthesis Data to Its Newport Horizon Premium and Newport Vision Premium Solutions
2. A potential route for human tumor gene therapy
3. Man Routes 100-Mile Run Securing Health Care for Inner-City Children
4. Duska Therapeutics Plans 505(b)(2) NDA Filing Route for ATPace(TM)
5. John Hancocks EZ Route Post-Enrollment Education Program Wins 2008 Insight Award for Customer Advocacy in Financial Services
6. African seed collection first to arrive in Norway on route to Arctic seed vault
7. Scientists discover a direct route from the brain to the immune system
8. Youth Service America and UnitedHealth Group Offer HEROES Grants to Fight Childhood Obesity
9. St. Louis Bariatric Surgeon Amps Up the Fight against Morbid Obesity with New Website
10. Sealing off portion of intestinal lining treats obesity, resolves diabetes in animal model
11. Researchers: Ban on fast food TV advertising would reverse childhood obesity trends
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/22/2014)... PITTSBURGH, PA (PRWEB) November 22, 2014 “Due ... cane,” said an inventor, from Gurnee, Ill. “While using the ... could be and I thought there needed to be a ... He invented the SPIKE BLOCK. , The SPIKE BLOCK offers ... doing so, it would help to reduce injuries and damage ...
(Date:11/22/2014)... In order to provide better services, LunaDress has ... dresses. The business knows that a suitable cocktail party dress ... , Now, the party dresses supplier’s high quality items are ... leading company in fashion industry, LunaDress understands that it is ... So it always raises the professional level and innovation ability. ...
(Date:11/22/2014)... "My friend went in for a mammogram and ... an inventor from Cambria Heights, N.Y. "To add insult ... time because the first results were inaccurate. Her misfortune ... MAMO EASY to offer a more comfortable way to ... from the pain normally involved with this procedure. The ...
(Date:11/22/2014)... Melbourne, Australia (PRWEB) November 22, 2014 ... for the declined slightly in 2009-10, due to ... Dairy Product Manufacturing industry products amid the ... outweigh the growing strength of Australian dairy manufacturers ... demand for dairy products outweighed supply growth, primarily ...
(Date:11/22/2014)... (PRWEB) November 22, 2014 The topic ... complexity of block retaining walls. The article states that, “While ... are several necessary steps that go into creating this powerful ... building a retaining wall is choosing which kind of block ... , B&D Rockeries says, “The two main options are ...
Breaking Medicine News(10 mins):Health News:LunaDress Unveils Fabulous Cocktail Party Dresses 2Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 2Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 3Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 4Health News:5 Step Installment of Block Retaining Walls is Topic of Latest Article by B&D Rockeries 2
... are self-employed have been found to be happier compared ... new study // conducted by Researchers at the University ... increased flexibility, independence and superior job satisfaction. ... less likely to retire, he said. 'We found that ...
... the cardiovascular diseases are a result of urban lifestyle was ... The study found that these diseases were among the largest ... the Byrraju Foundation, an NGO, along with by four other ... CARE Foundation in India, the George Institute for International Health ...
... launched on a trial basis in Singapore would enable parents ... unit//. A camera hooked up beside the baby's cot in ... the live footage on 3G-enabled mobile phones, Singapore General Hospital ... three-month trial, during which the infants go online for three ...
... nuclear disaster has left a lot to be desired in ... nation.// ,Farmers around North Wales need to be ... counters in possession of government inspectors who scan the lambs ... It is possible that the lambs could have grazed on ...
... statistics show that the suicide rate in England is at its ... population from 2002 to 2004. It is also noted that for ... fall in the number of young men committing suicide. ... a fifth in the National Suicide Strategy in 2002. The current ...
... have now found a new surgical approach termed as ... loss of urine//. It is a post operative complication ... condition in which the vagina and the neighboring structures ... ,Most women who undergo the pelvic surgery are left ...
Cached Medicine News:Health News:Heart Related Problems-The Largest Killers In Andhra Pradesh 2Health News:Heart Related Problems-The Largest Killers In Andhra Pradesh 3Health News:Two-In One Approach To Prevent Incontinence After Prolapse Surgery 2
(Date:11/21/2014)... Texas , Nov. 21, 2014  Lexicon Pharmaceuticals, ... pricing of its previously announced underwritten public offering of ... an effective shelf registration statement. The offering will consist ... offering price of $1.005 per share.  Lexicon has also ... to 7,462,687 additional shares of common stock.  All of ...
(Date:11/18/2014)... 18, 2014  NxStage ® Medical Inc. ... of innovative dialysis products , today announced ... dialyzer for the in-center, hemodialysis market.  Streamline Express ... designed to reduce the amount of labor required ... of touch point contamination sites.  The dialyzer enables ...
(Date:11/18/2014)... 18, 2014  Sanguine Biosciences – a biotechnology ... study recruitment – will use its proprietary mobile ... Pfizer Inc. find and recruit people diagnosed with ... members to participate in voluntary research, which will ... and hopefully aid in informing the development of ...
Breaking Medicine Technology:Lexicon Announces Pricing Of Common Stock Offering 2Lexicon Announces Pricing Of Common Stock Offering 3NxStage Launches New Streamline Express Dialyzer With Pre-attached Blood Tubing Set 2Sanguine's Mobile Application to Assist Recruitment for Pfizer Inc. Chronic Pain Research 2
... NEW ORLEANS, Dec. 6 Amgen Inc. (Nasdaq: AMGN ... and efficacy of Nplate® (romiplostim) in adult patients with myelodysplastic ... blood forming cells in the bone marrow are unable to ... blood elements, which can lead to low platelet counts. The ...
... , WINSTON-SALEM, N.C., Dec. 4 ... at the University of Pittsburgh School of Medicine and their ... quality of stored transfusion blood degrades over time and how ... it, has been associated with increased risk for cardiovascular events ...
Cached Medicine Technology:Nplate(R) Data From MDS Studies Presented at ASH 2Nplate(R) Data From MDS Studies Presented at ASH 3Nplate(R) Data From MDS Studies Presented at ASH 4Nplate(R) Data From MDS Studies Presented at ASH 5Nplate(R) Data From MDS Studies Presented at ASH 6Nplate(R) Data From MDS Studies Presented at ASH 7Nplate(R) Data From MDS Studies Presented at ASH 8Nplate(R) Data From MDS Studies Presented at ASH 9Nplate(R) Data From MDS Studies Presented at ASH 10NHLBI Grant Awarded to Wake Forest, Pitt to Improve Banked Blood 2NHLBI Grant Awarded to Wake Forest, Pitt to Improve Banked Blood 3
... The PL-A741 is PixeLINKs most popular machine vision ... FireWire camera with global shutter, external trigger and ... high-quality ditigal video streams to the computer. ... grabber with a CMOS imager to provide a ...
... a 6.6 megapixel color microscopy camera suitable for ... resolution microscopy camera designed to capture publication quality ... and can provide 5 frames per second at ... resolution can be decimated to provide up to ...
... popular microscopy camera. The PL-A662 is a ... for use in brightfield microscopy. The ... Desgined to simplify real-time uncompressed video display ... uncompromising video and digital still-image quality in ...
... camera photomicrographic system can be mounted on ... Leica, Nikon, and Zeiss, making building an ... the Internet easy and fast. Featuring a ... lens. The system records photomicrographic images (2,272 ...
Medicine Products: