Antecedent Nippostrongylus infection alters the lung immune response to Plasmodium berghei.
Parasite Immunol
; 39(8)2017 Aug.
Article
em En
| MEDLINE
| ID: mdl-28475238
ABSTRACT
In endemic regions, it is not uncommon for patients to be co-infected with soil-transmitted helminths and malaria. Although both malaria and many helminth species use the lungs as a site of development, little attention has been paid to the impact that pulmonary immunity induced by one parasite has on the lung response to the other. To model the consequences of a prior hookworm exposure on the development of immunity to malaria in the lungs, mice were infected with Nippostrongylus brasiliensis and 2 weeks later challenged with Plasmodium berghei. We found that a pre-existing hookworm-induced type 2 immune environment had a measurable but modest impact on the nature of the malaria-driven type 1 cytokine response in the lungs that was associated with a transient effect on parasite development and no significant changes in morbidity and mortality after malaria infection. However, prior hookworm infection did have a lasting effect on lung macrophages, where the malaria-induced M1-like response was blunted by previous M2 polarization. These results demonstrate that, although helminth parasites confer robust changes to the immunological status of the pulmonary microenvironment, lung immunity is plastic and capable of rapidly adapting to consecutive heterologous infections.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Plasmodium berghei
/
Infecções por Strongylida
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Malária
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Nippostrongylus
Limite:
Animals
Idioma:
En
Revista:
Parasite Immunol
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Estados Unidos