About My Health Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Here's How Gastric Bypass Works

by Hannah Joy on October 9, 2017 at 1:13 PM
Font : A-A+

Here's How Gastric Bypass Works

A technological advancement helps in understanding the function of gastric bypass and aids in discovering drug targets for obesity, type II diabetes and other metabolic diseases, reveals a new study.

The novel experimental and computational workflow involves the first use of rodent gastric bypass models, state-of-the-art mass spectrometry and an array of bioinformatics tools to begin unraveling how gastric bypass surgery lead to weight loss and a resolution of type 2 diabetes.

Advertisement


The study was conducted by a team of researchers at the Massachusetts General Hospital Center for Engineering in Medicine (MGH-CEM) and Shriners Hospital for Children. Their report on the impact of the surgery on liver metabolism appeared last month in the journal Technology.

"The therapeutic effects of gastric bypass give us hope that we can discover novel drugs for obesity and diabetes" says Nima Saeidi, PhD, of the MGH-CEM, principal investigator on the project.
Advertisement

"Our goal is to reverse engineer the weight loss and resolution of blood sugar control without having to perform such an invasive procedure. To achieve this, we must first be able to capture how metabolic organs such as the liver, muscle, adipose tissue and even the small intestine reprogram themselves post-surgery to trigger the weight loss and reversal of insulin resistance"

To tackle this challenge, the team has been exploiting rapid advancements in mass spectrometry to effectively quantify thousands of biomolecules, namely metabolites and proteins, in order to obtain clues about how specific tissues or whole organs respond to gastric bypass.

In the present study, they utilized the state-of-the art SWATH proteomics workflow to discover approximately 100 proteins in rat livers, levels of which were significantly affected by Roux-en-Y gastric bypass (RYGB) surgery.

These included proteins involved in iron transport, lipid metabolism and bile acid conjugation, some of which may be drugable targets for metabolic disease using a liver-specific version of the gene silencing technology RNAi.

Having demonstrated the utility of this platform, the team plans to expand the analysis to study the effects of RYGB on multi-organ cross-talk via proteins secreted into the bloodstream.

Gautham Vivek Sridharan, PhD, the paper's lead author says, "We have finally reached a stage in biomedical research where we can interrogate complex in vivo systems by cost effectively acquiring large scale mRNA, protein and metabolite data. The challenge remains in the interpretation of these high-dimensional data to provide biological insight on how tissue-specific metabolic and signaling pathways are triggered by the surgery." In the study, Sridharan pursued a network-based approach to integrate the protein and metabolite data to discover sub-networks or modules impacted by the surgery that may not have been intuitive based on conventional textbook pathways.

He adds, "Going forward, developing network-based algorithms to handle time-series 'omics' data will be imperative for unraveling complex cause-and-effect relationships, such as the impact of post-surgery plasma hormone levels on tissue transcriptional reprogramming."

Martin Yarmush, MD, PhD, director of the MGH-CEM and co-corresponding author of the paper, stresses the multi-disciplinary nature of the work.

"Investigators in the field have long sought after this type of multi-omic analysis on a rodent gastric bypass model to study metabolic disease, but the work required expertise in rodent surgery, multi-omic analytics, and computational biology. At the CEM, we enable engineering scientists to tackle complex problems in biomedicine at a world-class research hospital in collaboration with clinicians. This work will likely be of great interest to biotechnology companies aspiring to build their drug pipeline in the metabolic disease area."



Source: Eurekalert
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Advertisement
News Category
What's New on Medindia
Cochlear Implants may Consequently Drive Hearing Loss
E-cigarettes Use Linked to Erectile Dysfunction
Memory Loss - Can it be Recovered?
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.


Recommended Reading
Stomal Stenosis following Gastric Bypass Surgery
Stomal stenosis, a complication of Roux-en-Y gastric bypass or weight loss surgery, its causes, ......
Alcohol Effects After Bariatric Surgery
Gastric sleeve and gastric bypass surgery potentiate the intoxicating effects of alcohol due to its ...
Why are Kidney Stones Common after Bariatric Surgery?
Learn more about the risks for kidney stones ("nephrolithiasis") after weight loss ("bariatric") ......

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use