The acute phase response in children with mild and severe malaria in Papua New Guinea

Area of Science:

• Immunology
• Infectious Diseases
• Biochemistry

Background:

• Acute phase proteins are crucial for innate immunity and inflammation control during infection.
• The acute phase response in malaria remains poorly understood.
• Ferritin and C-reactive protein are key acute phase proteins with distinct roles.

Purpose of the Study:

• To investigate the acute phase protein response, specifically ferritin and C-reactive protein, in children with acute malaria.
• To correlate plasma concentrations of these proteins with disease severity and outcomes.

Main Methods:

• Plasma samples were collected from children with uncomplicated and severe malaria in Papua New Guinea.
• Concentrations of ferritin and C-reactive protein were measured.
• Data were analyzed in relation to clinical presentation and disease severity.

Main Results:

• Plasma ferritin concentration increased progressively with malaria severity, showing markedly elevated levels in severely ill children and those who died.
• Ferritin levels exceeded 500 ng/ml in a significant proportion of severe malaria cases and deaths.
• C-reactive protein levels were high in uncomplicated malaria but only moderately increased in severe malaria and fatal cases.

Conclusions:

• Elevated plasma ferritin correlates with severe malaria and mortality.
• A paradoxical decrease in C-reactive protein in severe malaria suggests a potential role in pathogenesis.
• Iron-induced oxidant stress combined with reduced C-reactive protein may contribute to severe malaria pathology, offering potential therapeutic targets.