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Vaccine Against Malaria Will Reduce Disease, Study Suggests

Date:
December 28, 2007
Source:
Case Western Reserve University
Summary:
Researchers have just published data potentially impacting the three billion people exposed to malaria every year. Novel findings show that new antibodies inhibit infection by the Plasmodium vivax (P. vivax) malaria parasite.

The late stage of the malaria parasite, P. vivax: the Duffy binding protein (green) and DNA (blue).
Credit: Image courtesy of Case Western Reserve University

Today, researchers at the Case Western Reserve University School of Medicine's Center for Global Health & Diseases published data potentially having a strong effect on the three billion people exposed to malaria every year. These novel findings show new antibodies inhibit infection by the Plasmodium vivax (P. vivax) malaria parasite.

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The research suggests a Duffy binding protein-based vaccine could provide protection against malaria blood-stage infection. This specific protein is an attractive candidate for a P. vivax vaccine, as it could decrease illness in malaria-prevalent regions. For the first time, scientists from the eight partner institutions along with the Center for Global Health & Diseases, conclusively proved that infiltration invasion of human red blood cells by the malaria parasite could be prevented by these antibodies.

Unlike other types of malaria, a P. vivax infection relies solely upon on the single molecular interaction between the Duffy antigen on human red blood cells and the Duffy binding protein expressed by the parasite to establish the disease. By interrupting the interaction of parasite binding to the red cell, the researchers and their colleagues around the United States and in Papua New Guinea, India, and Thailand, have the potential to eliminate P. vivax malaria. By exploiting this required interaction, the research offers a clear path toward development of a P. vivax malaria vaccine.

James W. Kazura, director of the Center for the Case Western Reserve University Center for Global Health and Diseases, emphasized "P. vivax is widely distributed throughout Asia, the South Pacific, parts of Africa and South America. However, the importance of developing a vaccine against vivax malaria to the American public is underscored by the fact that this form of malaria is transmitted in Afghanistan, Iraq and adjoining regions where our troops are stationed."

For more than 50 years the Case Western Reserve School of Medicine has dedicated significant effort to the field of international health. This emphasis was initiated by the late Frederick C. Robbins, dean of School of Medicine from 1966 to 1980, and Nobel laureate for discovering methods that led to development of the polio vaccine.

Malaria, deemed one of the world's "big three" diseases, along with tuberculosis and HIV/AIDS, kills one million people every year. Currently, there are 70 million cases of P. vivax worldwide. The disease's prevalence has increased in recent years through the worldwide spread of drug resistance, which is why a vaccine is desperately needed. The research at Case Western Reserve University School of Medicine is particularly encouraging because it offers one of the first feasible vaccine concepts to the most common form of malaria.

This research by Brian T. Grimberg, Peter A. Zimmerman and Christopher L. King is published in the December issue of Public Library of Science Medicine.


Story Source:

The above story is based on materials provided by Case Western Reserve University. Note: Materials may be edited for content and length.


Cite This Page:

Case Western Reserve University. "Vaccine Against Malaria Will Reduce Disease, Study Suggests." ScienceDaily. ScienceDaily, 28 December 2007. <www.sciencedaily.com/releases/2007/12/071220111516.htm>.
Case Western Reserve University. (2007, December 28). Vaccine Against Malaria Will Reduce Disease, Study Suggests. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2007/12/071220111516.htm
Case Western Reserve University. "Vaccine Against Malaria Will Reduce Disease, Study Suggests." ScienceDaily. www.sciencedaily.com/releases/2007/12/071220111516.htm (accessed January 31, 2015).

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