Apolipoprotein A1 Gene Polymorphism and Its Association With TNF-Alpha and Interleukin-6 Levels in Uncomplicated

Bose E Orimadegun1, Adedayo O Faneye2, Georgina N Odaibo2

  • 1Department of Chemical Pathology, College of Medicine, University of Ibadan, Ibadan, Nigeria.

American Journal of Medical Sciences and Medicine
|March 10, 2025
PubMed

Insights

Apolipoprotein A1 (APOA1) levels are linked to malaria severity in Nigerian children. Lower APOA1 correlates with higher parasite counts, suggesting its potential as a therapeutic target for malaria.

Area of Science:

  • Genetics and Immunology
  • Infectious Diseases
  • Biochemistry

Background:

  • Malaria, particularly Plasmodium falciparum, poses a significant health burden in sub-Saharan Africa, disproportionately affecting children.
  • Host genetic factors influence malaria susceptibility and severity, with apolipoprotein A1 (APOA1) showing potential immunomodulatory roles.
  • Understanding the interplay between APOA1 gene polymorphisms, APOA1 levels, and inflammatory responses is crucial for malaria management.

Purpose of the Study:

  • To investigate the association of APOA1 gene polymorphisms (G-75A and C+83T) with APOA1 levels and inflammatory markers in Nigerian children with malaria.
  • To evaluate the relationship between APOA1 levels, inflammatory markers (TNF-α, IL-6), and Plasmodium falciparum parasite burden.
  • To explore gender-specific differences in these associations.

Main Methods:

  • Cross-sectional study involving 76 children with malaria and 45 healthy controls.
  • Genotyping of APOA1 G-75A and C+83T polymorphisms using PCR-RFLP.
  • Measurement of serum APOA1, TNF-α, and IL-6 levels via immunoturbidimetric and ELISA assays.

Main Results:

  • High frequencies of wild-type APOA1 alleles (GG and CC) were observed; no homozygous mutants.
  • Significant differences in APOA1, TNF-α, and IL-6 levels between malaria patients and controls.
  • APOA1 levels negatively correlated with parasite counts (r = -0.272, p = 0.018), while TNF-α (r = 0.417, p = 0.001) and IL-6 (r = 0.279, p = 0.017) positively correlated, indicating APOA1's role as a negative acute-phase reactant.
  • Gender-specific analyses showed stronger inflammatory responses in males.

Conclusions:

  • APOA1 may serve as a negative acute-phase reactant and a potential biomarker in Plasmodium falciparum malaria.
  • The study highlights the influence of genetic variations and inflammatory markers on malaria disease severity.
  • Findings suggest APOA1 as a potential therapeutic target and inform personalized malaria management strategies.

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