Membrane proteins involved in the adherence of Plasmodium falciparum-infected erythrocytes to the endothelium

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Abstract
Plasmodium falciparum (human malaria) infections are characterized by the attachment of erythrocytes infected with mature stage parasites to endothelial cells lining the post-capillary venules, a phenomenon known as sequestration. In the human body, the microvessels of the heart, lungs, kidneys, small intestine, and liver are the principal sites of sequestration. Sequestered cells that clog the brain capillaries may reduce blood flow sufficiently so that there is confusion, lethargy, and unarousable coma—cerebral malaria. This review considers what is known about the molecular characteristics of the surface proteins, that is, the red cell receptors and the endothelial cell ligands, involved in sequestration. Recent work from our laboratory on the characterization of the adhesive proteins on the surface of the P falciparum -infected red cell, and the ligands to which they bind on human brain endothelial cells is also discussed. Finally, consideration is given to the multifactor processes involved in sequestration and cerebral malaria, as well as the possible role of ‘anti-adhesion therapy’ in the management of severe malaria.

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