Antagonistic effects of Plasmodium-helminth co-infections on malaria pathology in different population groups in Côte d'Ivoire.

Autor: Hürlimann E; Swiss Tropical and Public Health Institute, Basel, Switzerland.; University of Basel, Basel, Switzerland., Houngbedji CA; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire.; Centre d'Entomologie Médicale et Vétérinaire, Université Alassane Ouattara, Bouaké, Côte d'Ivoire., Yapi RB; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire., N'Dri PB; Swiss Tropical and Public Health Institute, Basel, Switzerland.; University of Basel, Basel, Switzerland.; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire., Silué KD; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire.; Unité de Formation et de Recherche Biosciences, Université Félix Hophouët-Boigny, Abidjan, Côte d'Ivoire., Ouattara M; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire.; Unité de Formation et de Recherche Biosciences, Université Félix Hophouët-Boigny, Abidjan, Côte d'Ivoire., Utzinger J; Swiss Tropical and Public Health Institute, Basel, Switzerland.; University of Basel, Basel, Switzerland., N'Goran EK; Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Abidjan, Côte d'Ivoire.; Unité de Formation et de Recherche Biosciences, Université Félix Hophouët-Boigny, Abidjan, Côte d'Ivoire., Raso G; Swiss Tropical and Public Health Institute, Basel, Switzerland.; University of Basel, Basel, Switzerland.
Jazyk: angličtina
Zdroj: PLoS neglected tropical diseases [PLoS Negl Trop Dis] 2019 Jan 10; Vol. 13 (1), pp. e0007086. Date of Electronic Publication: 2019 Jan 10 (Print Publication: 2019).
DOI: 10.1371/journal.pntd.0007086
Abstrakt: Introduction: Plasmodium spp. and helminths are co-endemic in many parts of the tropics; hence, co-infection is a common phenomenon. Interactions between Plasmodium and helminth infections may alter the host's immune response and susceptibility and thus impact on morbidity. There is little information on the direction and magnitude of such interactions and results are conflicting. This study aimed at shedding new light on the potential interactions of Plasmodium and helminth co-infections on anemia and splenomegaly in different population groups in Côte d'Ivoire.
Methodology: Parasitologic and clinical data were obtained from four cross-sectional community-based studies and a national school-based survey conducted between 2011 and 2013 in Côte d'Ivoire. Six scenarios of co-infection pairs defined as Plasmodium infection or high parasitemia, combined with one of three common helminth infections (i.e., Schistosoma mansoni, S. haematobium, and hookworm) served for analysis. Adjusted logistic regression models were built for each scenario and interaction measures on additive scale calculated according to Rothman et al., while an interaction term in the model served as multiplicative scale measure.
Principal Findings: All identified significant interactions were of antagonistic nature but varied in magnitude and species combination. In study participants aged 5-18 years from community-based studies, Plasmodium-hookworm co-infection showed an antagonistic interaction on additive scale on splenomegaly, while Plasmodium-Schistosoma co-infection scenarios showed protective effects on multiplicative scale for anemia and splenomegaly in participants aged 5-16 years from a school-based study.
Conclusions/significance: No exacerbation from co-infection with Plasmodium and helminths was observed, neither in participants aged 5-18 years nor in adults from the community-based studies. Future studies should unravel underlying mechanisms of the observed interactions, as this knowledge might help shaping control efforts against these diseases of poverty.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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