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Researchers reveal essential component of immunity to liver-destroying virus.

Vaccine Weekly

| December 03, 2003 | COPYRIGHT 2003 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2003 DEC 3 - (NewsRx.com & NewsRx.net) -- Researchers at Columbus Children's Research Institute (CCRI) on the campus of Columbus Children's Hospital have identified a key component of protective immunity against the hepatitis C virus, the major cause of chronic liver disease and transplantation in the United States.

The study found that successful control of hepatitis C infection required close cooperation between two types of white blood cells know as CD4+ "helper" and CD8+ "killer" T lymphocytes. The findings, published in Science, indicate that the immune system is unable to eliminate the virus without the CD4+ T lymphocytes.

"Our goal is to understand how a person's immune response determines the outcome of the hepatitis C infection," said Christopher M. Walker, PhD, director of the Center for Vaccines and Immunity at CCRI on the campus of Columbus Children's Hospital and professor of pediatrics at the Ohio State University College of Medicine and Public Health. "Approximately 70% of individuals exposed to hepatitis C become lifelong carriers of the virus. The remaining individuals successfully contain the infection and appear to have ...

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