ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Astaxanthin Is a Longevity Promoter

Meta-analysis links vitamin D deficiency with increased risk of mortality during 10.5 year median pe...

Prevent Or Reverse Diabetes: An Amazing Herbal Intervention

Exercise and Vitamin D Better Together for Heart Health

VIDEO: Essential Oils for Weight Loss

Can Valerian Root Help You Sleep Better?

Eight servings of veggies a day is clearly best for the heart

The Many Wonders of Calming Sandalwood Oil

Can Ginkgo Give Your Brain a Boost?

Fighting Statin-Induced Diabetes with CoQ10

 
Print Page
Email Article

Scientists Locate Key Hormone Involved in Appetite Control

  [ 61 votes ]   [ Discuss This Article ]
www.ProHealth.com • April 7, 2003


Researchers at Oregon Health & Science University (OHSU) have identified a key hormone involved in appetite control and demonstrated its effect on the brain. Scientists have shown that the hormone, called ghrelin, activates specialized neurons in the hypothalamus involved in weight regulation.

The research involved scientists at several collaborating institutions, including: Yale Medical School, Baylor College of Medicine, the University of Alberta and Lilly Research Laboratories. The results are printed in the Feb. 20 edition of the journal Neuron.

Researchers believe this information could be used to develop drugs aimed at stimulating appetite in patients who have undergone extreme weight loss due to illness, a condition known as cachexia. These pharmaceuticals could also assist children who are developing at a slower than normal rate. Conversely, drugs aimed at limiting production of the hormone might be developed to reduce appetite for those battling severe obesity.

"Ghrelin is a hormone produced in the stomach with the ability to stimulate feeding when introduced to specialized weight regulation brain cells called neuropeptide Y neurons. In fact, past research has shown that when ghrelin levels are increased in mice for an extended period, the mice gain weight," said Michael Cowley, Ph.D., an assistant scientist in the Division of Neuroscience at the OHSU Oregon National Primate Research Center and lead author of the study. "In both mice and humans, ghrelin levels increase naturally in response to weight loss or reduced caloric intake. As expected, the hormone diminishes in response to food intake. In other words, it's believed to be part of the body's natural signaling system which informs the brain when it's time to eat."

To pinpoint and witness the effects of ghrelin in the brain, the scientists used a method pioneered by OHSU researchers Cowley, Roger Cone, Ph.D., and Malcolm Low, M.D., Ph.D. The researchers used a fluorescent protein to highlight certain neurons, making the brain cells distinguishable from other surrounding neurons. They then used tiny electrodes to record cell activity in response to ghrelin.

"It is remarkable how such a relatively small group of interconnected neurons deep in the brain coordinate the daily signals of hunger and satiety with the body's long-term energy stores to normally maintain a constant body weight," said Low, a scientist in the Vollum Institute at OHSU.

The research team also located a new source for ghrelin production in the body. The site is located in a section of the hypothalamus that had no previously known function and that is near the brain region affected by the hormone.

"This research shows that there are two sites where increased appetite may be generated, the stomach and the brain," explained Cone, a senior scientist at the OHSU Vollum Institute. "We hope future research will hopefully distinguish between the roles of these two production sites so that we may better understand weight regulation and energy homeostasis in the body."

These latest findings follow a study published in August 2002 that identified and characterized peripheral hormone peptide YY (PYY). PYY appears to have the opposite effect as ghrelin – reducing appetite instead of increasing it. OHSU researchers and their collaborators found that by introducing PYY into the bloodstreams of both humans and mice, a temporary, but measurable drop in appetite and food ingestion occurred.



Post a Comment

Featured Products From the ProHealth Store
Energy NADH™ 12.5mg Mitochondria Ignite™ with NT Factor® FibroSleep™

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength

Natural Remedies

How One Tiny Molecule Turned into One Huge Health Breakthrough How One Tiny Molecule Turned into One Huge Health Breakthrough
Strontium - The Missing Mineral for Strong Bones Strontium - The Missing Mineral for Strong Bones
Live Without Anxiety or Stress Live Without Anxiety or Stress
Help for Soreness and Swelling: What Do Silkworms Have to Do With It? Help for Soreness and Swelling: What Do Silkworms Have to Do With It?
Green Coffee Extract: Unique Obesity Intervention Green Coffee Extract: Unique Obesity Intervention

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map