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Looks like the one: This article states the emb

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Posted On: 11/24/2014 3:35:06 PM
Posted By: Mutai803
Re: bms #11813
Looks like the one:

This article states the embargo lifted at 3pm today:

Muscle Relaxant May Be Viable Treatment for Rare Form of Diabetes
Released: 24-Nov-2014 2:00 PM EST
Embargo expired: 24-Nov-2014 3:00 PM EST
Source Newsroom: Washington University in St. Louis

Newswise — A commonly prescribed muscle relaxant may be an effective treatment for a rare but devastating form of diabetes, researchers at Washington University School of Medicine in St. Louis report.
The drug, dantrolene, prevents the destruction of insulin-producing beta cells both in animal models of Wolfram syndrome and in cell models derived from patients who have the illness.
Results are published Nov. 24 in the Proceedings of the National Academy of Sciences (PNAS) Online Early Edition.
Patients with Wolfram syndrome typically develop type 1 diabetes as very young children and need insulin injections several times each day. The syndrome also causes hearing loss, vision problems and difficulty with balance.
The researchers found that elevated levels of an enzyme called calpain 2 were the main cause of death in brain cells and insulin-producing cells. Dantrolene blocks that enzyme and also prevents brain cell death in animal and cell models of the disorder.
Because the drug is approved by the Food and Drug Administration (FDA), clinical trials in Wolfram patients could get underway relatively quickly, said senior investigator Fumihiko Urano, MD, PhD, the Samuel E. Schechter Professor of Medicine.
“We’d like to test the drug first in adult patients with Wolfram syndrome, and if we get positive results, we could extend the trial to children,” he said.
Dantrolene often is prescribed to people with cerebral palsy or multiple sclerosis to treat muscle spasticity. If effective in patients with Wolfram syndrome, dantrolene also may be a viable treatment for patients with more common forms of diabetes. Calpain 2, which is involved in calcium metabolism, is overactive in cell models of those more common forms of diabetes.
Wolfram syndrome affects one in 500,000 people worldwide, and many patients die by age 40.
Urano and his team of researchers also studied the effects of dantrolene on stem cells from Wolfram syndrome patients and their close relatives, such as parents or siblings. Unlike adult stem cells collected from cord blood or stem cells developed from embryos, the stem cells in these studies were grown from skin cells. The researchers treated the stem cells with growth factors so they would differentiate into specific cell types, such as neurons and insulin-producing cells.
Cells that came from Wolfram patients produced high levels of calpain 2, which induced cell death. But when the researchers treated those cells with the drug, everything changed. Levels of the enzyme dropped, and the cells stopped dying.
“We also found that dantrolene was not toxic to cells grown from the skin samples donated by patients’ relatives,” Urano said. “The drug interfered with cell death in cells from Wolfram patients but did not harm cells that came from parents and siblings.”
The researchers are hopeful that dantrolene also may be effective against type 1 and type 2 diabetes.
“Wolfram is the most difficult form of diabetes because these patients have problems with blood sugar and so many other challenges,” Urano said. “Calpain 2 also plays a role in type 1 and type 2 diabetes. Currently, we are studying the drug in animal and cell models of those types of diabetes to see if it also keeps insulin-producing cells from dying.”
Having found that it also can prevent the death of brain cells and of insulin-secreting beta cells in Wolfram syndrome, Urano next wants to look more closely at how the drug affects other tissues, including the eye. Those studies will begin soon.
The research is funded by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) at the National Institutes of Health (NIH), the Juvenile Diabetes Research Foundation, the American Diabetes Association, Team Alejandro, Team Ian, the Ellie White Foundation for Rare Genetic Disorders and the Jack and J.T. Snow Scientific Research Foundation. NIH grant numbers DK067493, P60 DK020579 and UL1 TR000448.
Lu S, Kanekura K, Hara T, Mahadevan J, Spears LD, Oslowski C, Martinez R, Yamazaki-Inoue M, Neilson A, Blanner P, Brown CM, Semenkovich CF, Marshall BA, Hershey T, Umezawa A, Greer PA, Urano F. A calcium-dependent protease as a potential therapeutic target for Wolfram syndrome. PNAS Online Early Edition, Nov. 24, 2014 www.pnas.org/cgi/doi/10.1073/pnas.1421055111
Washington University School of Medicine’s 2,100 employed and volunteer faculty physicians also are the medical staff of Barnes-Jewish and St. Louis Children’s hospitals. The School of Medicine is one of the leading medical research, teaching and patient-care institutions in the nation, currently ranked sixth in the nation by U.S. News & World Report. Through its affiliations with Barnes-Jewish and St. Louis Children’s hospitals, the School of Medicine is linked to BJC HealthCare.


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