Navigation Links
Mechanism elucidated: How smell perception influences food intake
Date:2/10/2014

In animals, as in humans, hunger mechanisms are known to stimulate food intake. Hunger triggers a set of mechanisms that encourage feeding, for example by increasing sensory perceptions such as the sense of smell. The researchers have now succeeded in revealing what links hunger and increased smell perception in the brain, and the resulting urge to eat.

The researchers have discovered how this mechanism is initiated in the endocannabinoid system in mice. This system interconnects receptors located in the brain and involved in different sensations such as euphoria, anxiety, or even pain, that are also sensitive to cannabinoid substances, such as cannabis.

The researchers discovered that the CB1 cannabinoid receptors control a circuit that connects the olfactory bulb (the region in the nervous system that initially handles olfactory information, located above the nose) to the olfactory cortex (higher structures of the brain). When the sensation of hunger is felt, it triggers the activity of the cannabinoid receptors, which in turn activate the olfactory circuit, which then becomes more responsive.

It is therefore this biological mechanism that brings about the increased sensitivity to smell during hunger, explaining one of the reasons for food intake and attraction to food.

The researchers expect that the circuit involved in the olfactory system is altered in obese or anorexic patients, and that sensitivity to smell may be more or less strong compared to normal. Elucidation of the biological mechanism will allow better management of these types of pathologies.


'/>"/>

Contact: Giovanni Marsicano
giovanni.marsicano@inserm.fr
33-557-573-756
INSERM (Institut national de la sant et de la recherche mdicale)
Source:Eurekalert  

Page: 1

Related biology news :

1. Mechanism for Burgess Shale-type preservation
2. New insight into mechanisms behind autoimmune diseases suggests a potential therapy
3. Unexpected discovery reveals a new mechanism for how the cerebellum extracts signal from noise
4. Researchers unravel genetic mechanism of fatty liver disease in obese children
5. Mechanism found connecting metastatic breast cancer and arthritis
6. UF receives $1 million from Keck Foundation to study mechanisms of inherited disease
7. New genetic mechanism of immune deficiency discovered
8. Housekeeping mechanism for brain stem cells discovered
9. Carnegie Mellon fluorescent biosensor reveals mechanism critical to immune system amplification
10. Researchers find mechanism that gives plants balance
11. New key mechanism in cell division discovered
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mechanism elucidated: How smell perception influences food intake
(Date:6/15/2016)... 2016 Transparency Market Research ... Market by Application Market - Global Industry Analysis Size Share ... the report, the  global gesture recognition market  was ... is estimated to grow at a CAGR of ... Increasing application of gesture recognition technology ...
(Date:6/7/2016)... June 7, 2016  Syngrafii Inc. and San ... relationship that includes integrating Syngrafii,s patented LongPen™ eSignature ... This collaboration will result in greater convenience for ... union, while maintaining existing document workflow and compliance ... ...
(Date:6/2/2016)... YORK , June 2, 2016   The Weather ... is announcing Watson Ads, an industry-first capability in which consumers ... by being able to ask questions via voice or text ... Marketers have long sought ... the consumer, that can be personal, relevant and valuable; and ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published ... how a patient who developed lymphedema after being treated for breast cancer benefitted from ... the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
(Date:6/23/2016)... 23, 2016  Blueprint Bio, a company dedicated to ... medical community, has closed its Series A funding round, ... "We have received a commitment from Forentis ... need to meet our current goals," stated Matthew ... runway to complete validation on the current projects in ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... quality, regulatory and technical consulting, provides a free webinar on Performing ... July 13, 2016 at 12pm CT at no charge. , Incomplete investigations are ...
Breaking Biology Technology: