Affinity proteomics reveals elevated muscle proteins in plasma of children with cerebral malaria

Area of Science:

• Biochemistry
• Immunology
• Pediatrics

Background:

• Severe Plasmodium falciparum malaria in children involves systemic inflammation and sequestration of infected red blood cells.
• The specific risk factors predisposing children to severe malaria complications remain incompletely understood.

Purpose of the Study:

• To identify human plasma proteins associated with childhood malaria syndromes.
• To differentiate protein profiles between uncomplicated and severe malaria, including cerebral malaria and severe malaria anemia.

Main Methods:

• Utilized multiplex antibody suspension bead arrays to analyze plasma protein levels.
• Analyzed over 1,015 proteins in plasma samples from more than 700 children.

Main Results:

• Identified 41 proteins that differed between malaria-infected children and healthy controls.
• Discovered 13 proteins that distinguished uncomplicated malaria from severe malaria syndromes.
• Found markers of oxidative stress in severe malaria anemia, and markers of endothelial activation, platelet adhesion, and muscular damage in cerebral malaria.

Conclusions:

• Severe malaria is associated with generalized vascular inflammation, endothelial activation, and altered glucose metabolism.
• Increased plasma muscle proteins suggest muscle damage and microvasculature lesions in cerebral malaria.
• Plasma protein profiling offers insights into the pathophysiology of severe childhood malaria.