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How does immune globulin therapy work? Now is the time to find out
Date:11/21/2012

Immune globulin replacement began decades ago as a treatment for patients who could not make their own protective antibodies, but has proven to have much broader benefits than originally expected. With new uses regularly being discovered for this limited and expensive resource, including as a potential treatment for Alzheimer's disease, now is the time to discover exactly how intravenous immune globulin (IVIG) treatments work, and to engineer a protein that can provide similar benefits, writes Erwin Gelfand, MD, chair of pediatrics at National Jewish Health in the November 22, 2012, issue of the New England Journal of Medicine.

"It has been a challenge to understand exactly how IVIG provides its antiinflammatory and immunomodulatory benefits," said Dr. Gelfand. "We need to figure it out so we can bring this treatment to more people who have no other options for treating their conditions."

Dr. Gelfand is an internationally recognized expert on immune deficiencies. In the late 1960s he was among the first to successfully perform a bone-marrow transplant for severe combined immune deficiency. He has used IVIG for decades to treat patients with inflammatory and autoimmune diseases.

Intravenous immune globulin solutions are prepared from the pooled plasma of thousands of healthy blood donors. Thus, it carries a tremendous diversity of antibodies, which can help defend against a wide variety of pathogens. It was originally introduced in the 1950s as a treatment to replace the missing disease-fighting antibodies in patients whose immune deficiencies left them vulnerable to infections.

Fairly quickly, however, it became apparent that its benefits extended beyond simple antibody replacement. In a patient with an autoimmune blood disease, it successfully restored blood platelet numbers, cells that help clot blood. Since then dozens of immune and inflammatory diseases have been shown to benefit from IVIG treatment, including Kaw
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Contact: William Allstetter
allstetterw@njhealth.org
303-398-1002
National Jewish Health
Source:Eurekalert

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