Author Archive

Stem Cells Reverse Type 1 Diabetes In Mice

Wednesday, January 14th, 2015

Type 1 Diabetes

Published by Diabetes News, U.K.

A cell used to treat immune-related diseases has been found to spare islet cells from destruction, reversing type 1 diabetes.

Mesenchymal stem cells (MSCs) were studied by researchers at the Harvard-affiliated Brigham and Women’s Hospital (BWH), with their results published in the journal Stem Cells.

MSCs – a type of adult stem cell – possess anti-inflammatory and potent immune-suppressing effects. Previous preclinical trials have found administration could reduce blood sugar levels in non-obese diabetic mice, without the need for insulin.

The research team investigated if additional administration of MSCs could spare other pancreatic islets from destruction in the immune system.

Injecting MSCs directly into these islets is infeasible as the pancreas releases toxic enzymes when altered. To administer MSCs into islets, the researchers engineered the HCELL homing molecule to direct the MSCs into the islets.

HCELL, a surface adhesion molecule, controls how cells are homed in the bloodstream to areas of tissue inflammation. This molecule is normally lacking in MSCs.

Upon administering HCELL-bearing MSCs into the diabetic mice, the MSCs fixed to the islets, resulting in long-lasting normalisation of blood sugar levels – essentially reversing type 1 diabetes.

Professor Robert Sackstein of BWH’s Departments of Dermatology and of Medicine, co-author of the study, concluded that this preclinical study marks a significant step in using MSCs to treat type 1 diabetes, before acknowledging that further studies are necessary.

Sourced from: www.diabetes.co.uk

Stem Cell Transplant May Help Patients With MS

Sunday, January 4th, 2015

As reported by CBSNews.

An experimental treatment that uses a patient’s own stem cells may offer new hope for people with multiple sclerosis.

In a small clinical trial, patients experienced long-term disease remission after undergoing a transplant of their own hematopoietic stem cells. This type of cell is responsible for the formation of blood in the body and are typically derived from bone marrow. The patients also took high-dose immunosuppressive drugs.

The paper, published Monday in JAMA Neurology, reports on the third year of a five-year study. A total of 24 patients with active relapsing-remitting MS were enrolled in the trial. With this type of MS, patients have points when their disease is active followed by periods when they do not experience any symptoms.

The researchers found that nearly 79 percent of the patients who underwent the procedure sustained full neurologic function for the three years following the treatment and symptoms of their disease did not progress. Additionally, patients in that time period did not develop any new lesions related to their disease.

More than 90 percent of patients did not experience disease progression, while 86 percent did not have any periods of relapse. Though a small number of patients did have side effects from the immunosuppressive drugs, they were no different than the side effects typically experienced by MS patients taking the drugs who haven’t undergone stem cell therapy.

“Longer follow-up is needed to determine the durability of the response,” the authors write in the study. “Careful comparison of the results of this investigation and other ongoing studies will be needed to identify the best approaches for high-dose immunosuppressive therapies for MS and plan the next clinical studies.”

The authors of an accompanying editorial say the research indicates this type of therapy has potential to work on patients who do not experience disease remission with medications alone, such as immunosuppressive drugs and anti-inflammatory drugs such as corticosteroids.

However, they add that “the jury is still out regarding the appropriateness and indication” of stem cell transplants for MS patients. Stem cell therapy is not approved by the U.S. Food and Drug Administration for the treatment of MS. The National Multiple Sclerosis Society currently funds 15 research projects on stem cell therapies that have the potential to prevent disease activity and repair nerve damage.

“Stem cell transplant for multiple sclerosis (MS) has been a subject of great interest to scientists, physicians, and patients,” the editorial notes. “The status of stem cell therapy is a common question posed by patients at their annual MS visit.”

MS is a progressive disease that damages the central nervous system. It affects about 250,000 to 300,000 people in the U.S., and 2.3 million worldwide. It is classified as an autoimmune condition, in which a person’s own immune system attacks myelin, that fatty coating that covers and protects nerves of the spine and brain.

For more information please click the following link:  http://www.cbsnews.com/news/stem-cell-transplant-may-help-manage-ms/