Help
Subscribe


GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy

 28 July 2016

Advanced search
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Roy Pounder

Home

News  
Journals
Review Articles
Slide Atlas
Video Clips
Online Books
Advanced Digestive Endoscopy
Classical Cases
Conference Diary
PubMed
International GH Links
USA GH Links
National GH Links
National GI Societies
Other Useful Links




Emails on Gastroenterology and Hepatology
the National AIDS Treatment Advocacy Project
Visit the gastroenterology section of the EUMS

News

Obese patients after gastric banding have lower brain-hedonic responses to food

Obese patients after gastric bypass surgery have lower brain-hedonic responses to food than after gastric banding, reports the most recent issue of Gut.

News image

Roux-en-Y gastric bypass (RYGB) has greater efficacy for weight loss in obese patients than gastric banding (BAND) surgery.

Dr Tony Goldstone and colleagues from the United Kingdom hypothesized that this may result from different effects on food hedonics via physiological changes secondary to distinct gut anatomy manipulations.

The team used functional MRI, eating behaviour and hormonal phenotyping to compare body mass index (BMI)-matched unoperated controls and patients after RYGB and BAND surgery for obesity.

Obese patients after RYGB had lower brain-hedonic responses to food than patients after BAND surgery.

RYGB patients had lower activation in brain reward systems
Gut

The team noted that RYGB patients had lower activation than BAND patients in brain reward systems, particularly to high-calorie foods, including the orbitofrontal cortex, amygdala, caudate nucleus, nucleus accumbens and hippocampus.

The researchers found that this was associated with lower palatability and appeal of high-calorie foods and healthier eating behavior, including less fat intake, in RYGB compared with BAND patients and/or BMI-matched unoperated controls.

These differences were not explicable by differences in hunger or psychological traits between the surgical groups, but anorexigenic plasma gut hormones (GLP-1 and PYY), plasma bile acids and symptoms of dumping syndrome were increased in RYGB patients.

Dr Goldstone and team conclude, "The identification of these differences in food hedonic responses as a result of altered gut anatomy/physiology provides a novel explanation for the more favorable long-term weight loss seen after RYGB than after BAND surgery, highlighting the importance of the gut–brain axis in the control of reward-based eating behavior."

Gut 2014;63:891-902
19 May 2014

Go to top of page Email this page Email this page to a colleague

 28 July 2016 
Hep B screening and immunosuppressive therapy
 28 July 2016 
Pancreatitis after ERCP
 28 July 2016 
HCV eradication in cirrhotic patients
 27 July 2016 
Bleeding GI recurrence with aspirin use
 27 July 2016 
IBD during pregnancy
 27 July 2016 
Gluten exposure in patients with celiac disease
 26 July 2016 
Post-infectious IBS after C. diff
 26 July 2016 
Gut microbiota and IBD
 26 July 2016 
Neighborhood variation in the use of laparoscopy for colon cancer
 25 July 2016 
Antibiotic prophylaxis for open colectomies
 25 July 2016 
Steroids in eosinophilic esophagitis
 25 July 2016 
Prevention of post-ERCP pancreatitis
 22 July 2016 
Upper GI lesions at primary diagnosis in IBD
 22 July 2016 
Duodenal villous atrophy and celiac disease
 22 July 2016 
Fecal calprotectin and IBD
 21 July 2016 
Radiofrequency ablation in Barrett's
 21 July 2016 
HCV eradication and inflammation in cirrhotic patients
 21 July 2016 
Surveillance of Barrett's
 20 July 2016 
Nonselective β-blockers and survival in cirrhosis
 20 July 2016 
Adolescent body mass index and and colorectal cancer risk
 20 July 2016 
Genetic biomarkers and IBD treatment response
 19 July 2016 
Prevention of chemotherapy-induced nausea and vomiting
 19 July 2016 
Screening diabetic patients for NAFLD
 19 July 2016 
Longterm clinical follow-up of living liver donors
 18 July 2016 
Rectal neuroendocrine tumors
 18 July 2016 
Liver cancer prediction scores in Hep B
 18 July 2016 
Liver stiffness measurement in chronic liver disease
 15 July 2016 
Patient reported outcomes in celiac disease
 15 July 2016 
Tonsillectomy and IBD risk
 15 July 2016 
Trainee IBD education in the USA
 14 July 2016 
Screening for familial pancreatic cancer
 14 July 2016 
Fecal calprotection for IBD prognosis
 14 July 2016 
Perianal surgery risk in Crohn's
 13 July 2016 
Psychological comorbidity and postinfectious IBS
 13 July 2016 
Lung transplant outcomes in Hep C
 13 July 2016 
Graft selection strategy in living donor liver transplants
 12 July 2016 
Therapy for iron deficiency anemia in IBD
 12 July 2016 
Surveillance endoscopy in Barrett's esophagus
 12 July 2016 
Treatment of pediatric acute liver failure
 11 July 2016 
Transition to adulthood in celiac disease
 11 July 2016 
Factors that influence access to liver transplant
 11 July 2016 
Disturbed sleep and IBS
 08 July 2016 
Mortality and peptic ulcers
 08 July 2016 
Statins and cirrhosis in Hep B
 08 July 2016 
Genetic risk score and body mass index
 07 July 2016 
Predicting food triggers in eosinophilic esophagitis
 07 July 2016 
Extraperitoneal vs transperitoneal colostomy for hernia
 07 July 2016 
Predictors fecal transplant failure in C. diff infection
 06 July 2016 
Therapies for Hep B cure
 06 July 2016 
Hospital volume and liver cancer survival
 06 July 2016 
Adverse events after outpatient colonoscopy
 05 July 2016 
Non-invasive scoring systems for fibrosis in NAFLD
 05 July 2016 
Exercise and gastroesophageal reflux
 05 July 2016 
Colorectal surgery and dialysis
 04 July 2016 
Guidelines on PPI and NSAID prescription
 04 July 2016 
Rectal cancer surgery checklist
 04 July 2016 
Autoimmunity in eosinophilic esophagitis and families
 01 July 2016 
Outcome measures in celiac disease
 01 July 2016 
Growth factor activity and IBD
 01 July 2016 
Aspirin and colorectal cancer

Blackwell Publishing


GastroHep.com is a Blackwell Publishing registered trademark
© 2016 Wiley-Blackwell and GastroHep.com and contributors
Privacy Statement
Disclaimer
About Us