Related Experiment Video
Updated: May 9, 2026

07:27
A Simple Protocol for Platelet-mediated Clumping of Plasmodium falciparum-infected Erythrocytes in a Resource Poor Setting
Published on: May 16, 2013
Summary
Cerebral malaria pathogenesis involves loss of endothelial protein C receptor (EPCR) on brain vessels. This loss, caused by infected red blood cells, triggers coagulation, inflammation, and barrier dysfunction.
Area of Science:
- Hematology
- Pathology
- Vascular Biology
Background:
- Cerebral malaria (CM) is a severe complication of Plasmodium falciparum infection.
- The precise mechanisms underlying CM pathogenesis remain incompletely understood.
- Endothelial dysfunction is a hallmark of severe malaria.
Purpose of the Study:
- To investigate the role of endothelial protein C receptor (EPCR) in CM pathogenesis.
- To elucidate the link between cytoadherent infected erythrocytes and endothelial barrier disruption in the brain.
Main Methods:
- The study by Moxon et al. examined the expression and function of EPCR in the context of CM.
- Analysis involved assessing EPCR shedding and its correlation with disease severity.
- Investigated the impact of infected erythrocyte adhesion on EPCR and subsequent endothelial responses.
Main Results:
- Loss of EPCR on brain endothelial cells was observed in CM.
- Cytoadherent infected erythrocytes were identified as a cause of EPCR shedding.
- This EPCR loss correlated with localized coagulation, inflammation, and compromised endothelial barrier function.
Conclusions:
- Loss of brain vascular EPCR is a critical event in CM pathogenesis.
- EPCR shedding by infected erythrocytes contributes to the vascular pathology of CM.
- Targeting EPCR-mediated pathways may offer therapeutic strategies for cerebral malaria.
Related Concept Videos
Receptor Downregulation in MVBs
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...

