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Mice chronically fed a high-fat diet are resistant to malaria induced by Plasmodium berghei ANKA

  • Immunology and Host-Parasite Interactions - Original Paper
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Abstract

C57BL/6 mice infected with Plasmodium berghei ANKA (PbA) develop neurological symptoms and die 6-–7-day post-inoculation in the absence of high parasitemia. The effects of chronic intake of a high-fat diet on this process are largely unknown. In this study, we assessed the effect of a high-fat diet on the host-parasite response to malarial infection. Mice were fed ad libitum with either standard or a high-fat diet for 8 weeks and afterwards were infected with PbA. PbA-infected mice feeding a standard diet presented blood parasitemia, hepatic and cerebral histopathological alterations, and hepatic injury with increased hemozoin deposition in the liver. By contrast, these changes were not observed in the malaria high-fat diet group. In addition, mice fed a high-fat diet did not develop the expected neurological symptoms of cerebral malaria and were resistant to death. Taken together, our results indicate that chronic ingestion of high-fat diet prevents the development of experimental malaria induced by PbA injection, suggesting a relationship between a high-fat diet and malaria, which is an interesting subject for further study in humans.

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Acknowledgments

We thank Pró-reitoria de Pesquisa da Universidade Federal de Minas Gerais (PRPq/UFMG).

Funding

The authors received financial support from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/454916/2014-0), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG/CBB-APQ-01922-12).

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Correspondence to Juliana Carvalho-Tavares.

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All procedures were performed with the approval of the Animal Ethics Committee of the Federal University of Minas Gerais (UFMG), Brazil (reference number 05/2014).

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The authors declare that they have no conflicts of interest.

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Section Editor: Tobili Sam-Yellowe

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Oliveira-Lima, O.C., Almeida, N.L., Almeida-Leite, C.M. et al. Mice chronically fed a high-fat diet are resistant to malaria induced by Plasmodium berghei ANKA. Parasitol Res 118, 2969–2977 (2019). https://doi.org/10.1007/s00436-019-06427-2

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  • DOI: https://doi.org/10.1007/s00436-019-06427-2

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