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Malaria Journal
Published in: Malaria Journal 1/2008

Open Access 01-12-2008 | Research

Antibody responses to the merozoite surface protein-1 complex in cerebral malaria patients in India

Authors: Naomi W Lucchi, Jon Eric Tongren, Vidhan Jain, Avinash C Nagpal, Christian W Kauth, Ute Woehlbier, Hermann Bujard, Aditya P Dash, Neeru Singh, Jonathan K Stiles, Venkatachalam Udhayakumar

Published in: Malaria Journal | Issue 1/2008

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Abstract

Background

Plasmodium falciparum infection causes cerebral malaria (CM) in a subset of patients with anti-malarial treatment protecting only about 70% to 80% of patients. Why a subset of malaria patients develops CM complications, including neurological sequelae or death, is still not well understood. It is believed that host immune factors may modulate CM outcomes and there is substantial evidence that cellular immune factors, such as cytokines, play an important role in this process. In this study, the potential relationship between the antibody responses to the merozoite surface protein (MSP)-1 complex (which consists of four fragments namely: MSP-183, MSP-130, MSP-138 and MSP-142), MSP-636 and MSP-722 and CM was investigated.

Methods

Peripheral blood antibody responses to recombinant antigens of the two major allelic forms of MSP-1 complex, MSP-636 and MSP-722 were compared between healthy subjects, mild malaria patients (MM) and CM patients residing in a malaria endemic region of central India. Total IgG and IgG subclass antibody responses were determined using ELISA method.

Results

The prevalence and levels of IgG and its subclasses in the plasma varied for each antigen. In general, the prevalence of total IgG, IgG1 and IgG3 was higher in the MM patients and lower in CM patients compared to healthy controls. Significantly lower levels of total IgG antibodies to the MSP-1f38, IgG1 levels to MSP-1d83, MSP-119 and MSP-636 and IgG3 levels to MSP-1f42 and MSP-722 were observed in CM patients as compared to MM patients.

Conclusion

These results suggest that there may be some dysregulation in the generation of antibody responses to some MSP antigens in CM patients and it is worth investigating further whether perturbations of antibody responses in CM patients contribute to pathogenesis.
Appendix
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Metadata
Title
Antibody responses to the merozoite surface protein-1 complex in cerebral malaria patients in India
Authors
Naomi W Lucchi
Jon Eric Tongren
Vidhan Jain
Avinash C Nagpal
Christian W Kauth
Ute Woehlbier
Hermann Bujard
Aditya P Dash
Neeru Singh
Jonathan K Stiles
Venkatachalam Udhayakumar
Publication date
01-12-2008
Publisher
BioMed Central
Published in
Malaria Journal / Issue 1/2008
Electronic ISSN: 1475-2875
DOI
https://doi.org/10.1186/1475-2875-7-121

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Keynote webinar | Spotlight on medication adherence

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Live: Thursday 27th June 2024, 18:00-19:30 (CEST)

WHO estimates that half of all patients worldwide are non-adherent to their prescribed medication. The consequences of poor adherence can be catastrophic, on both the individual and population level.

Join our expert panel to discover why you need to understand the drivers of non-adherence in your patients, and how you can optimize medication adherence in your clinics to drastically improve patient outcomes.

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Prof. Florian Limbourg
Prof. Anoop Chauhan
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