Stem Cell Therapy Can Help Reverse Early-Stage Multiple Sclerosis

by VR Sreeraman on  February 1, 2009 at 12:38 PM Genetics & Stem Cells News
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 Stem Cell Therapy Can Help Reverse Early-Stage Multiple Sclerosis
In a clinical trial, scientists from Northwestern University's Feinberg School of Medicine have showed that stem cell transplantation could reverse the neurological dysfunction of early-stage multiple sclerosis patients. For the study, the researchers transplanted the patients'' own immune stem cells into their bodies and thereby "resetting" their immune systems.

"This is the first time we have turned the tide on this disease," Lancet quoted principal investigator Richard Burt, M.D. chief of immunotherapy for autoimmune diseases at the Feinberg School, as saying.

It was found that the patients in the small phase I/II trial continued to improve for up to 24 months after the transplantation procedure and then stabilized.

They experienced improvements in areas in which they had been affected by multiple sclerosis including walking, ataxia, limb strength, vision and incontinence.

Multiple sclerosis (MS) is an autoimmune disease in which the immune system attacks the central nervous system. In its early stages, the disease is characterized by intermittent neurological symptoms, called relapsing-remitting MS.

During this time, the person will either fully or partially recover from the symptoms experienced during the attacks.

Within 10 to 15 years after onset of the disease, most patients with this relapsing-remitting MS progress to a later stage called secondary progressive multiple sclerosis, in which they experience a steady worsening of irreversible neurological damage.

The trial recruited 21 patients between 20 to 53 years of age, who had relapsing-remitting multiple sclerosis that had not responded to at least six months of treatment with interferon beta. The patients had had MS for an average of five years.

They found that after an average follow-up of three years post transplantation, 17 patients (81 percent) improved by at least one point on a disability scale. The disease also stabilized in all patients.

In the procedure, the researchers treated patients with chemotherapy to destroy their immune system.

They then injected the patients with their own immune stem cells, obtained from the patients'' blood before the chemotherapy, to create a new immune system. The procedure is called autologous non-myeloablative haematopoietic stem-cell transplantion.

In earlier studies, the researchers had transplanted immune stem cells into late-stage MS patients.

"It didn't help in the late stages, but when we treat them in the early stage, they get better and continue to get better," he said.

The study will be published online and in the March issue of The Lancet Neurology.

Source: ANI

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