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Argy N, Kendjo E, Augé-Courtoi C, Cojean S, Clain J, Houzé P, Thellier M, Hubert V, Deloron P, Houzé S. Influence of host factors and parasite biomass on the severity of imported Plasmodium falciparum malaria. PLoS One 2017; 12:e0175328. [PMID: 28410415 PMCID: PMC5391917 DOI: 10.1371/journal.pone.0175328] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/23/2017] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVES Imported malaria in France is characterized by various clinical manifestations observed in a heterogeneous population of patients such as travelers/expatriates and African migrants. In this population, host factors and parasite biomass associated with severe imported malaria are poorly known. METHODS From data collected by the Centre National de Référence du Paludisme, we identified epidemiological, demographic and biological features including parasite biomass and anti-plasmodial antibody levels (negative, positive and strongly positive serology) associated with different disease severity groups (very severe, moderately severe, and uncomplicated malaria) in 3 epidemiological groups (travelers/expatriates, first- and second-generation migrants). RESULTS Age, ethnicity, absence of prior infection with P. falciparum, antibody levels, plasma PfHRP2 levels, total and circulating parasite biomass were related to severe malaria onset. Sequestered parasite biomass tended to be increased in very severe malaria, and was strongly correlated to the antibody level of the host. CONCLUSIONS Prior exposure to P. falciparum is associated with high anti-plasmodial antibody levels which influence clinical presentation of imported malaria and its correlated circulating and sequestered parasite burden.
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Affiliation(s)
- Nicolas Argy
- Laboratoire de parasitologie, hôpital Bichat-Claude Bernard, APHP, Paris, France
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- UMR MERIT 216, Institut de recherche pour le développement, Paris, France
| | - Eric Kendjo
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
| | - Claire Augé-Courtoi
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- UMR MERIT 216, Institut de recherche pour le développement, Paris, France
| | - Sandrine Cojean
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
| | - Jérôme Clain
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- UMR MERIT 216, Institut de recherche pour le développement, Paris, France
| | - Pascal Houzé
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- Laboratoire de pharmacologie, hôpital Saint-Louis, APHP, Paris, France
| | - Marc Thellier
- Laboratoire de parasitologie, hôpital Pitié-Salpêtrière, APHP, Paris, France
- Faculté de Médecine, Université Pierre et Marie Curie, COMUE Sorbonne Paris Cité, Paris, France
| | - Veronique Hubert
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
| | - Philippe Deloron
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- UMR MERIT 216, Institut de recherche pour le développement, Paris, France
| | - Sandrine Houzé
- Laboratoire de parasitologie, hôpital Bichat-Claude Bernard, APHP, Paris, France
- Centre National de Référence du Paludisme, hôpital Bichat-Claude Bernard, APHP, Paris, France
- Faculté de Pharmacie, Université Paris Descartes, COMUE Sorbonne Paris Cité, Paris, France
- UMR MERIT 216, Institut de recherche pour le développement, Paris, France
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