Abstract:
:Cerebral malaria is a severe multifactorial condition associated with the interaction of high numbers of infected erythrocytes to human brain endothelium without invasion into the brain. The result is coma and seizures with death in more than 20% of cases. Because the brain endothelium is at the interface of these processes, we investigated the global gene responses of human brain endothelium after the interaction with Plasmodium falciparum-infected erythrocytes with either high- or low-binding phenotypes. The most significantly up-regulated transcripts were found in gene ontology groups comprising the immune response, apoptosis and antiapoptosis, inflammatory response, cell-cell signaling, and signal transduction and nuclear factor kappaB (NF-kappaB) activation cascade. The proinflammatory NF-kappaB pathway was central to the regulation of the P falciparum-modulated endothelium transcriptome. The proinflammatory molecules, for example, CCL20, CXCL1, CXCL2, IL-6, and IL-8, were increased more than 100-fold, suggesting an important role of blood-brain barrier (BBB) endothelium in the innate defense during P falciparum-infected erythrocyte (Pf-IRBC) sequestration. However, some of these diffusible molecules could have reversible effects on brain tissue and thus on neurologic function. The inflammatory pathways were validated by direct measurement of proteins in brain endothelial supernatants. This study delineates the strong inflammatory component of human brain endothelium contributing to cerebral malaria.
journal_name
Bloodjournal_title
Bloodauthors
Tripathi AK,Sha W,Shulaev V,Stins MF,Sullivan DJ Jrdoi
10.1182/blood-2009-06-226415subject
Has Abstractpub_date
2009-11-05 00:00:00pages
4243-52issue
19eissn
0006-4971issn
1528-0020pii
blood-2009-06-226415journal_volume
114pub_type
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