Navigation Links
Diabetes Insight Could Lead to Better Treatments

Inhibiting a key inflammatory pathway brought powerful results in mice and people, researchers say

MONDAY, Dec. 21 (HealthDay News) -- Scientists have identified a protein that may be involved in the development of type 2 diabetes, a finding that could lead to new drugs to fight this growing worldwide scourge.

This same group of researchers recently showed that inhibiting this pathway worked to block pain associated with gout, an inflammatory condition affecting the joints.

Inflammation also plays a large role in diabetes.

The authors of this study, published online Dec. 21 in Nature Immunology, started their exploration with the NLRP3 inflammasome, which has been linked with different inflammatory diseases.

Inflammasomes are clusters of proteins that stimulate inflammation and play a role in the body's innate immune response, explained Dr. Norma Kenyon, professor at the Diabetes Research Institute of the University of Miami Miller School of Medicine. She is familiar with the new findings.

"The inflammasome sense situations that are dangerous to our body," added study senior author Jurg Tschopp, a professor at the University of Lausanne in Epalinges, Switzerland. "This includes pathogens (bacteria, viruses), but also endogenous 'danger situations,' such as uric acid crystals found in gout, high circulating glucose found in diabetes or beta-amyloid [plaques] found in Alzheimer's disease."

Until now, scientists were unable to figure how out the NLRP3 inflammasome is activated. With that information now in hand, researchers might have another promising route to developing treatments for type 2 diabetes.

The chain of events seems to start with a protein called TXNIP, which, when exposed to oxidative stress, binds to NLRP3 and leads to the production of interleukin-1 beta or IL-1b, an immune system molecule.

IL-1b is also produced by the pancreas' islet cells as a response to high blood sugar. These islet cells are also responsible for secretion of insulin.

To determine if islet production of IL-1b was caused by the interaction of NLRP3 and TXNIP, the researchers exposed islet cells from normal mice and from mice deficient in NLRP3 or TXNIP to high glucose levels. As predicted, the protein-deficient islets made less IL-1b.

What's more, these deficient mice cleared glucose from the bloodstream quicker in response to insulin.

"Our findings predict that type 2 diabetes can be treated by inhibitors of the inflammasome or IL-1b," Tschopp said.

The good news is that these effects of NLRP3 are confined to the insulin-producing beta cells of the pancreas, so compounds to inhibit the pathway should not have systemic effects.

Studies in humans are already under way. According to Tschopp, "clinical studies with type 2 diabetes patients have already been initiated and the first results are again incredibly encouraging. With a single injection of IL-1b inhibitors, glucose levels in diabetes patients are highly reduced during six months. This treatment could replace the standard treatment currently used."'

More information

There's more on type 1 and type 2 diabetes at the American Diabetes Association.

SOURCES: Jurg Tschopp, Ph.D., professor, University of Lausanne, Epalinges, Switzerland; Norma Kenyon, M.D., Martin Kleiman professor of surgery, medicine, microbiology and immunology and biomedical engineering, Diabetes Research Institute, University of Miami Miller School of Medicine; Dec. 21, 2009, online Nature Immunology

Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Orameds Dr Roy Eldor was Chosen to Lecture at the First International Conference Held by the Bildirici Center for Diabetes Care Research in Israel.
2. UCSF/SFGH project for diabetes patients wins award for innovation, quality
3. SFGH Project for Diabetes Patients Wins Award for Innovation, Quality
4. Sermo Vitals Report(TM) Quantifies One Year of Physician Conversation About Diabetes
5. TrekDesk: A Potentially Positive Impact on Diabetes & Obesity
6. Coffee, Tea Might Stave Off Diabetes
7. UNC scientists coordinate study of link between insulin use and cancer in people with diabetes
8. Study finds over 90 percent of people with gum disease are at risk for diabetes
9. Study shows how gene action may lead to diabetes prevention, cure
10. Bears Quarterback Jay Cutler and Eli Lilly and Company Will Send 44 Kids to American Diabetes Association Camps Through the Touchdowns for Diabetes Campaign
11. Chinese-American and Korean-American women at highest risk for diabetes in pregnancy
Post Your Comments:
(Date:11/25/2015)... ... November 25, 2015 , ... For the first time, Vitalalert ... Organizations, One Beat ” campaign. The partnership between the two groups began in 2014 ... MAP International’s cause. , MAP International was founded in 1954 and is an international ...
(Date:11/25/2015)... ... ... On November 25, 2015, officials of Narconon Arrowhead , the drug rehabilitation ... new cutting edge recovery program that has been 50 years in the making. ... with the purpose to free addicts from the symptoms and negative behaviors of addiction. ...
(Date:11/25/2015)... ... ... Smiles by Stevens is pleased to announce the addition of Botox® for ... aware of the benefits of Botox® in the treatment of moderate facial wrinkling, few ... and pain as a result of Jaw Tension, TMJ (temporo-mandibular joint) disorder, and Bruxism ...
(Date:11/25/2015)... ... November 25, 2015 , ... In an ongoing Clinical Study conducted by an ... IL, UV Angel is evaluating the efficacy of its product and its disinfection protocol. ... 30 beds) from May 2014 through October 2015 at a 360-bed, acute-care, academic medical ...
(Date:11/25/2015)... Spring, Md (PRWEB) , ... November 25, 2015 ... ... Pulmonary Hypertension Association (PHA) announces the nation’s Periwinkle Pioneers, individuals and groups responsible ... history of this disease. The Periwinkle Pioneers, nominated by the public, will receive ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... 2015 Kitov Pharma ceuticals ... a biopharmaceutical company focused on the development of therapeutic ... today announced the closing of its previously announced underwritten ... ), each representing 20 ordinary shares of the Company, ... ADSs and warrants were issued in a fixed combination ...
(Date:11/25/2015)...  Today AVACEN Medical announced the issue of United States patent No. ... ". This patent shields the company,s AVACEN 100 dry heat therapy medical device and specific methods ... Photo - ... ... ...
(Date:11/25/2015)... , Nov. 25, 2015 USP 800 ... drug preparations (e.g. pharmacists, pharmacy technicians, nurses, physicians, ... technicians). The chapter also covers all entities which ... pharmacies, hospitals, other healthcare institutions, patient treatment clinics, ... --> --> What is ...
Breaking Medicine Technology: