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May 11, 2006
"Selectively blocking inflammatory signals may protect mice from MS"...PRESS RELEASE: University of Chicago
"A new way to preserve the cells that surround and protect nerves could lead to new treatments for demyelinating diseases such a multiple sclerosis, a research team reports in the May 10, 2006, issue of the Journal of Neuroscience.
The approach grew out of a novel explanation, quickly gaining followers, for the mechanism of nerve damage caused by multiple sclerosis. Instead of concentrating on the alterations that result in autoimmune assaults on the nervous system, researchers led by Brian Popko of the University of Chicago have focused on a set of factors that prevent recovery from the inflammatory attacks.
A series of papers from Popko’s lab has demonstrated that interferon-gamma -- a chemical signal used to activate the immune system -- plays a critical role in damaging the cells that produce myelin, the protective coating that lines healthy nerves. Interferon not only leaves these cells, called oligodendrocytes, incapable of repairing the damage but can also kill them directly.
"Interferon-gamma is not normally found in the nervous system," said Popko, the Jack Miller Professor of Neurological Diseases at the University of Chicago, "but it can gain entry after an inflammatory flare-up. We previously showed how it harmed oligodendrocytes. Here we confirm its direct harmful effects on those cells and demonstrate one way of protecting them.""
"A new way to preserve the cells that surround and protect nerves could lead to new treatments for demyelinating diseases such a multiple sclerosis, a research team reports in the May 10, 2006, issue of the Journal of Neuroscience.
The approach grew out of a novel explanation, quickly gaining followers, for the mechanism of nerve damage caused by multiple sclerosis. Instead of concentrating on the alterations that result in autoimmune assaults on the nervous system, researchers led by Brian Popko of the University of Chicago have focused on a set of factors that prevent recovery from the inflammatory attacks.
A series of papers from Popko’s lab has demonstrated that interferon-gamma -- a chemical signal used to activate the immune system -- plays a critical role in damaging the cells that produce myelin, the protective coating that lines healthy nerves. Interferon not only leaves these cells, called oligodendrocytes, incapable of repairing the damage but can also kill them directly.
"Interferon-gamma is not normally found in the nervous system," said Popko, the Jack Miller Professor of Neurological Diseases at the University of Chicago, "but it can gain entry after an inflammatory flare-up. We previously showed how it harmed oligodendrocytes. Here we confirm its direct harmful effects on those cells and demonstrate one way of protecting them.""