Ummid Assistant

Jamia Millia launches courses on China, Afghanistan

IGNOU launches value education programme for teachers

Welcome Guest! You are here: Home Health

Protein, not sugar, key to keeping us alert and thin

Saturday November 19, 2011 09:12:08 AM, IANS

London: In a finding that could have bearing on obesity and sleep disorders, researchers say it's protein, not sugar, that stimulates cells keeping us awake and thin by burning calories.

According to researchers from University of Cambridge, wakefulness and energy expenditure rely on "orexin cells," which secrete a stimulant called orexin/hypocretin in the brain.

Reduced activity in these unique cells results in narcolepsy, uncontrollable desire for sleep or its sudden onset and has been linked to weight gain, the journal Neuron reports, citing a varsity statement.

Cambridge scientists compared actions of different nutrients on orexin cells and found out that amino acids, nutrients found in proteins such as egg whites - stimulate orexin neurons much more than other nutrients.

"Sleep patterns, health, and body weight are intertwined. Shift work, as well as poor diet, can lead to obesity," said Denis Burdakov, pharmacology researcher at the Cambridge Institute of Metabolic Science.

"Electrical impulses emitted by orexin cells stimulate wakefulness and tell the body to burn calories. We wondered whether dietary nutrients alter those impulses," he added.

Scientists highlighted the orexin cells (which are scarce and difficult to find) with genetically targeted fluorescence in mouse brains. They then introduced different nutrients, such as amino acid mixtures similar to egg whites, while tracking orexin cell impulses.

They discovered that amino acids stimulate orexin cells. Previous work by the group found that glucose (a sugar) blocks orexin cells (which was cited as a reason for after-meal sleepiness).

So researchers also looked at interactions between sugar and protein. They found that amino acids stop glucose from blocking orexin cells, or in other words, protein negates the effects of sugar on the cells.

"What is exciting is to have a rational way to 'tune' select brain cells to be more or less active by deciding what food to eat," Burdakov said. "Not all brain cells are simply turned on by all nutrients, dietary composition is critical.

These findings may shed light on previously unexplained observations showing that protein meals can make people feel less calm and more alert than carbohydrate meals.



 


 

 

 

 

 

Bookmark and Share

Home | Top of the Page

Comments

Note: By posting your comments here you agree to the terms and conditions of www.ummid.com

Comments powered by DISQUS

i

i

i

 

 

 

Top Stories

'...five years of inexpressible horror, I hope it was a dream'

"It was five years of horror which I would never like to describe. I want to forget them. Though it would take time before the horrific moments are erased from memory, I hope it was a dream", Dr. Salman Farsi says in a shattered voice even as  

Malegaon youth greeted by thousands at 'Mushawerat Square'

Strong show of unity by Muslims ahead of Malegaon youth's release

 

  Most Read

Every effort to bring Lokpal bill in winter session: Khurshid

Law Minister Salman Khurshid Friday said that every endeavour was being made to bring a strong Lokpal bill in the winter session of parliament that begins Tuesday. Khurshid said the  

Occupy protesters take to streets across US

Occupy protesters took to the streets across America, from Miami to Los Angeles to Portland as thousands of original Occupy Wall Street demonstrators deluged New York marking two months of their movement. Scores were arrested 

Evicted occupiers return to New York park; 100 arrested

 

  News Pick

Maps on Wikipedia depict people's view: Founder

Addressing the first ever WikiConference in India, Wikipedia founder Jimmy Wales here Friday said the representation of maps on the free encyclopedia 

Wikipedia plans various initiatives in India

India's Narinder Singh elected to International Law Commission

The UN General Assembly has re-elected Narinder Singh of India as a member of the International Law Commission (ILC) for a five-year term beginning Jan 1, 2012. The other candidates elected from the Asia-Pacific Group  

Vatican to take legal action against Benetton advertisement

The Vatican has said it will resort to legal action to stop clothing retailer Benetton's advertisement with a photographic montage of Pope Benedict XVI kissing a noted Egyptian imam on the mouth. A large banner with 

 

Picture of the Day

A day after their release on bail November 16, 2011, Malegaon youth were greeted by thousands of people at Mushwaerat Chowk. Mushawerat Chowk of Malegaon is one of the spots where a bomb had exploded on September 08, in 2006. 

(Photo: ummid.com)

 

 
 
 
 
 

RSS  |  Contact us

 

| Quick links

News

 

Subscribe to

Ummid Assistant

 

National

Religion

RSS

Scholarships

About us

International

Culture

Twitter

Government Schemes

Feedback

Regional

History

Facebook

Education

Register

Politics

Opinion

Newsletter

Contact us

Business

Career

     

Education

     

 

 

Ummid.com: Disclaimer | Terms of Use | Advertise with us | Link Exchange

Ummid.com is part of the Awaz Multimedia & Publications providing World News, News Analysis and Feature Articles on Education, Health. Politics, Technology, Sports, Entertainment, Industry etc. The articles or the views displayed on this website are for public information and in no way describe the editorial views. The users are entitled to use this site subject to the terms and conditions mentioned.

2010 Awaz Multimedia & Publications. All rights reserved.