Study of Antigens on Gametocyte-Infected Erythrocytes in Malaria
Author Information
Author(s): Saeed Maha, Roeffen Will, Alexander Neal, Drakeley Christopher J., Targett Geoffrey A. T., Sutherland Colin J.
Primary Institution: London School of Hygiene and Tropical Medicine
Hypothesis
Do antibodies in Gambian children recognize surface antigens on erythrocytes infected with Plasmodium falciparum gametocytes?
Conclusion
The study provides evidence that gametocyte surface antigens are distinct from those of asexual parasites and suggests a potential strategy for developing transmission-blocking vaccines.
Supporting Evidence
- 34.0% of plasma samples recognized mature gametocyte surface antigens.
- Transmission-blocking activity was assessed using a direct membrane-feeding assay.
- Children with anti-GSA antibodies had lower gametocyte densities at day 28 after treatment.
Takeaway
The study found that some children have antibodies that can recognize specific parts of malaria-infected blood cells, which could help in creating vaccines to stop the spread of malaria.
Methodology
Flow cytometry was used to detect antibodies in the plasma of Gambian children that recognize the surface of live cultured erythrocytes infected with gametocytes.
Potential Biases
Potential biases may arise from the selection of participants and the specific treatments they received.
Limitations
The study's findings may not be generalizable beyond the specific population studied, and the effects of different treatments on antibody responses were not fully explored.
Participant Demographics
Children under 10 years old from The Gambia, with a mean age of 5.0 years.
Statistical Information
P-Value
0.066
Confidence Interval
95% C.I. 4.71–5.38
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website