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Impact of Human Immunodeficiency Virus Infection in Pregnant Women on Variant-Specific Immunity to Malaria
- Source :
- Clinical and Vaccine Immunology. 15:617-621
- Publication Year :
- 2008
- Publisher :
- American Society for Microbiology, 2008.
-
Abstract
- Human immunodeficiency virus (HIV) increases susceptibility to Plasmodium falciparum infection, and this has most clearly been demonstrated in pregnant women. Variant surface antigens on the surfaces of erythrocytes infected with P. falciparum are major targets of protective immunity. We studied the impact of HIV infection on pregnant women's humoral immunity to variant surface antigens expressed by placental and pediatric isolates of P. falciparum . By flow cytometry, sera from HIV-infected women more frequently lacked antibodies to these antigens than sera from HIV-uninfected women. This difference was similar in magnitude for pediatric isolates (unadjusted odds ratio [OR] = 6.36; 95% confidence interval [CI] = 1.14, 35.32; P < 0.05) and placental isolates (unadjusted OR = 6.47; 95% CI = 0.75, 55.64; P < 0.10). We divided women into high and low responders on the basis of their antibody levels. After adjustment for CD4 count, maternal age, and gravidity, we found that HIV-infected women more frequently had low responses to both pediatric isolates (OR = 5.34; 95% CI = 1.23, 23.16; P = 0.025) and placental isolates (OR = 4.14; 95% CI = 1.71, 10.02; P = 0.002). The relative quantity of antibodies to both pediatric isolates ( P = 0.035) and placental isolates ( P = 0.005) was lower in HIV-infected women than in HIV-uninfected women. HIV infection has a broad impact on variant-specific immunity, which may explain the susceptibility of infected individuals to clinical malaria episodes.
- Subjects :
- Microbiology (medical)
Erythrocytes
Placenta
Plasmodium falciparum
Clinical Biochemistry
Immunology
HIV Infections
Biology
Antibodies
Antigen
Pregnancy
Immunity
medicine
Animals
Humans
Immunology and Allergy
Malaria, Falciparum
Pregnancy Complications, Infectious
Child
HIV
Odds ratio
Flow Cytometry
medicine.disease
biology.organism_classification
Antigenic Variation
Virology
Antigens, Surface
Humoral immunity
biology.protein
Female
Microbial Immunology
Antibody
Malaria
Subjects
Details
- ISSN :
- 1556679X and 15566811
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Clinical and Vaccine Immunology
- Accession number :
- edsair.doi.dedup.....fc2c79c6afcdd4a08830eb24b4db39f2