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Markers of inflammation in children with severe malarial anaemia
11 Churches Medical Association of Zambia, Lusaka, Zambia; 2 Macha Mission Hospital, Choma, Zambia; 3 Department of Medicine, Howard University, Center, Washington DC, USA; 4 Department of Natural Sciences, Messiah College, Grantham, USA; 5 De.
Insights
Severe malarial anemia in children is linked to higher neopterin levels, a marker of immune cell activation. Conversely, elevated interleukin 4 may offer protection against severe malarial anemia.
Area of Science:
- Immunology
- Hematology
- Infectious Diseases
Background:
- Severe malarial anemia is a significant cause of mortality in children.
- The specific immune response patterns associated with severe malarial anemia are not fully understood.
- Neopterin and interleukins 4 and 10 are key immune markers.
Purpose of the Study:
- To investigate the association between serum levels of neopterin, interleukin 4, and interleukin 10 and severe malarial anemia.
- To determine if specific immune response patterns characterize severe malarial anemia in children.
Main Methods:
- Serum levels of neopterin, interleukin 4, and interleukin 10 were measured in Zambian children under 6 years old.
- Children presenting with cerebral malaria were classified into severe anemia (hemoglobin /= 7 g/dl) groups.
- Logistic regression modeling was used to analyze the associations.
Main Results:
- A 10-fold increase in neopterin was associated with a 50-fold increase in the odds of severe malarial anemia (P = 0.015).
- A 10-fold increase in interleukin 4 was associated with a 10-fold decrease in the odds of severe malarial anemia (P = 0.023).
- Interleukin 10 showed a nonsignificant inverse association with severe malarial anemia (P = 0.095).
Conclusions:
- Severe malarial anemia development may be directly associated with elevated serum neopterin levels.
- Inverse correlation between serum interleukin 4 levels and severe malarial anemia suggests a protective role.
Abstract:
objective To investigate if severe malarial anaemia is associated with a specific immune response pattern, we determined serum levels of neopterin (a marker of activation of macrophages by interferon-gamma) and of the anti-inflammatory cytokines, interleukins 4 and 10. methods Zambian children < 6 years of age presenting to a rural hospital with cerebral malaria were studied. Twenty-one children with admission haemoglobin concentrations /= 7 g/dl served as a control group. results Logistic regression modelling indicated that a 10-fold rise in serum neopterin concentrations was associated with a 50-fold increase in the estimated odds of having severe anaemia (P = 0.015), while a 10-fold rise in serum interleukin 4 concentrations was associated with a 10-fold decrease in the estimated odds of having severe anaemia (P = 0.023). Increasing serum interleukin 10 concentrations, measured in less than half of the subjects, were associated with a nonsignificant reduction in the odds of having severe anaemia (P = 0.095). conclusion Development of severe malarial anaemia may be directly associated with serum neopterin concentrations and inversely correlated with serum interleukin 4 levels.