Folic acid metabolism and malaria

Area of Science:

• Nutritional Science
• Infectious Disease Epidemiology
• Pharmacology

Background:

• Folate is crucial for DNA synthesis and malaria parasite survival.
• Antifolate antimalarial drugs are vital for malaria prevention and treatment.
• Folate sufficiency may correlate with increased malaria risk.

Purpose of the Study:

• To investigate the impact of folic acid supplementation on malaria treatment outcomes.
• To evaluate the prevalence of folate deficiency in malarious regions.
• To assess the safety of universal folic acid supplementation in children in endemic areas.

Main Methods:

• Review of existing literature on folate, malaria, and antifolate drugs.
• Analysis of studies examining the effects of folic acid supplementation on Plasmodium falciparum growth in vitro.
• Examination of clinical data on treatment failure rates and adverse events in children receiving iron and folic acid supplements in malarious areas.

Main Results:

• Folic acid can reverse the inhibitory effects of antifolate drugs on malaria parasites in vitro.
• Supplementation with folic acid in children with malaria may increase treatment failure rates.
• No significant evidence supports folate deficiency prevalence or beneficial effects of supplementation on malarial anemia in children.
• Universal iron and folic acid supplementation in children in holoendemic malaria regions may increase severe morbidity and mortality.

Conclusions:

• Folic acid supplementation should be excluded for children in holoendemic malaria regions from universal supplementation recommendations.
• Regions with holoendemic Plasmodium falciparum malaria should be excluded from WHO recommendations for universal folic acid supplementation in children.
• Supplementation of pregnant women with folic acid remains unaffected by these findings.