Skip to content

You are here:Home arrow Nutrition arrow Nutrition Basics arrow Researchers Suppress Hunger Hormone
Researchers Suppress Hunger Hormone E-mail
Written by Administrator   

Johns Hopkins scientists report success in significantly suppressing levels of the "hunger hormone" ghrelin in pigs using a minimally invasive means of chemically vaporizing the main vessel carrying blood to the top section, or fundus, of the stomach. An estimated 90 percent of the body's ghrelin originates in the fundus, which can't make the hormone without a good blood supply.

"With gastric artery chemical embolization, called GACE, there's no major surgery," says Aravind Arepally, M.D., clinical director of the Center for Bioengineering Innovation and Design and associate professor of radiology and surgery at the John Hopkins University School of Medicine. "In our study in pigs, this procedure produced an effect similar to bariatric surgery by suppressing ghrelin levels and subsequently lowering appetite."

Reporting on the research in the Sept. 16, 2008 online edition of Radiology, Arepally and his team note that for more than a decade, efforts to safely and easily suppress grehlin have met with very limited success.

Bariatric surgery -- involving the removal, reconstruction or bypass of part of the stomach or bowel -- is effective in suppressing appetite and leading to significant weight loss, but carries substantial surgical risks and complications. "Obesity is the biggest biomedical problem in the country, and a minimally invasive alternative would make an enormous difference in choices and outcomes for obese people," Arepally says.

Arepally and colleagues conducted their study over the course of four weeks using 10 healthy, growing pigs; after an overnight fast, the animals were weighed and blood samples were taken to measure baseline ghrelin levels. Pigs were the best option, he says, because of their human-like anatomy and physiology.

Using X-ray for guidance, members of the research team threaded a thin tube up through a large blood vessel near the pigs' groins and then into the gastric arteries supplying blood to the stomachs. There, they administered one-time injections of saline in the left gastric arteries of five control pigs, and in the other five, one-time injections of sodium morrhuate, a chemical that destroys the blood vessels.

The team then sampled the pigs' blood for one month to monitor ghrelin values. The levels of the hormone in GACE-treated pigs were suppressed up to 60 percent from baseline.

"Appetite is complicated because it involves both the mind and body," Arepally says. "Ghrelin fluctuates throughout the day, responding to all kinds of emotional and physiological scenarios. But even if the brain says "produce more ghrelin," GACE physically prevents the stomach from making the hunger hormone."

The research was funded by the National Institutes of Health.

Authors on the paper are Brad P. Barnett, Tarek T. Patel, Valerie Howland, Racy C. Boston, Dara L. Kraitchman, Ashkan A. Malayeri, and Arepally, all of Johns Hopkins.

 
< Prev   Next >

 Contact Our News Editors

  • For any corrections of factual information, or to contact the editors please use our feedback form.
  • Please send any medical, health, fitness or anti-aging news press releases to: This e-mail address is being protected from spam bots, you need JavaScript enabled to view it  
  Back to Front Page
 List of all Health and Medical Sections

MMF RSS Feeds

Partners

Advertisement
Advertisement
Advertisement
 

Sponsors

Advertisement
Advertisement
Advertisement
Advertisement

A to Z Health:
Allergies | Alzheimers | Anxiety | Arthritis | Asthma | Attention Deficit Hyperactivity Disorder (ADHD) | Autism | Auto-Immune Disorders | Bird Flu | Bladder Cancer | Bone Disease | Brain Tumor Breast Cancer | Cardiovascular Disease | Cervical Cancer | Cholesterol (HDL, LDL) | Chronic Fatigue Syndrome | Cold and Flu | Colitis | Colon Cancer | Colorectal Cancer | Crohn's Disease Cystic Fibrosis | Dementia | Depression | Diabetes | Eczema | Endometrial Cancer | Erectile Dysfunction | Esophageal Cancer | Eye Disease | Fibromyalgia | Gastrointestinal Problems | Hair Loss Headaches (e.g., migraines, sinus, etc.) | Head and Neck | Hearing Loss | Heartburn | Heart Disease | Hormone Disorders | Hypertension (High Blood Pressure) | Infectious Diseases | Joint Pain Kidney Cancer | Kidney Disease | Leukemia | Liver Cancer | Liver Disease | Lung Cancer | Lung Disease | Lymphoma | Melanoma | Mesothelioma | Migraines | Multiple Sclerosis | Obesity Obessive Compulsive Disorder (OCD) | Osteoporosis | Ovarian Cancer | Pancreatic Cancer | Parkinson’s Disease | Pediatric Cancer | Prostate Cancer | Prostate Health | Psoriasis | Respiratory Ailments | Sarcoma | Skin Cancer | Skin Diseases & Conditions | Sleep Disorders | Stomach Cancer | Stress | Stroke | Testicular Cancer | Thyroid Cancer | Thyroid Disease | Urology/Renal

Visitors: 13423049
Copyright © 2007 - 2014 Muscle Mag Fitness | Muscle, Fitness and Health Resource All rights reserved. Use of this site constitutes acceptance of Muscle Mag Fitness terms of service.
Designed by: HostAfric.com