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Interleukin-22 Polymorphisms in Plasmodium falciparum-Infected Malaria Patients
Nada H Aljarba1, Mashael R Al-Anazi2, Mohammed I Shafeai3
1Biology Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.
Mediators of Inflammation
|March 10, 2020
Summary
Interleukin-22 (IL-22) gene variations may offer protection against Plasmodium falciparum malaria. Specific single-nucleotide polymorphisms (SNPs) in IL-22 were associated with reduced risk of malaria infection.
Area of Science:
- Genetics
- Immunology
- Infectious Diseases
Background:
- Malaria, caused by Plasmodium falciparum, is a lethal disease with severe clinical outcomes.
- Interleukin-22 (IL-22) is a cytokine implicated in various diseases, including malaria.
- Understanding the genetic basis of malaria susceptibility is crucial for developing effective interventions.
Purpose of the Study:
- To investigate the association between Interleukin-22 (IL-22) gene polymorphisms and Plasmodium falciparum infection.
- To identify specific single-nucleotide polymorphisms (SNPs) in the IL-22 gene that may influence malaria susceptibility.
Main Methods:
- Genotyping of ten single-nucleotide polymorphisms (SNPs) in the IL-22 gene using PCR-based assays.
- Analysis of 250 Plasmodium falciparum infected individuals.
- Evaluation of IL-22 gene promoter activity in relation to identified polymorphisms.
Main Results:
- The TT genotype of the rs2227481 polymorphism in the IL-22 gene was significantly associated with a reduced risk of Plasmodium falciparum infection (odds ratio 0.254).
- Preliminary findings suggest a protective effect of certain IL-22 genotypes against malaria.
Conclusions:
- IL-22 gene polymorphisms, specifically at rs2227481 and rs2227483, may play a role in conferring protection against Plasmodium falciparum infection.
- Further research is warranted to elucidate the precise mechanisms by which IL-22 polymorphisms influence malaria pathogenesis and host defense.

