A nutrient mediates intraspecific competition between rodent malaria parasites in vivo

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A nutrient mediates intraspecific competition between rodent malaria parasites in vivo

Hosts are often infected with multiple strains of a single parasite species. Within-host competition between parasite strains can be intense and has implications for the evolution of traits that impact patient health, such as drug resistance and virulence. Yet the mechanistic basis of within-host competition is poorly understood. Here, we demonstrate that a parasite nutrient, para-aminobenzoic ...

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Potent in vivo anti-malaria activity of Goniothalamin against rodent malaria parasite infection in mice

Goniothalamin was evaluated for its anti-malaria activity in-vivo, using the 4-Day Suppressive Test (Peters & Robinson, 1975). The test were carried out against two strains of rodent malaria parasites, the sensitive strain P. berghei ANKA (MRA 311) strain and the resistant strain P. yoelii (MRA 312). An Initial screening was carried out using a single dose of 10 mg/kg body weight administered s...

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Potent in vivo anti-malaria activity of Goniothalamin against rodent malaria parasite infection in mice

Goniothalamin was evaluated for its anti-malaria activity in-vivo, using the 4-Day Suppressive Test (Peters & Robinson, 1975). The test were carried out against two strains of rodent malaria parasites, the sensitive strain P. berghei ANKA (MRA 311) strain and the resistant strain P. yoelii (MRA 312). An Initial screening was carried out using a single dose of 10 mg/kg body weight administered s...

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An essential dual-function complex mediates erythrocyte invasion and channel-mediated nutrient uptake in malaria parasites

Malaria parasites evade immune detection by growth and replication within erythrocytes. After erythrocyte invasion, the intracellular pathogen must increase host cell uptake of nutrients from plasma. Here, we report that the parasite-encoded RhopH complex contributes to both invasion and channel-mediated nutrient uptake. As rhoph2 and rhoph3 gene knockouts were not viable in the human P. falcip...

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The machinery underlying malaria parasite virulence is conserved between rodent and human malaria parasites

Sequestration of red blood cells infected with the human malaria parasite Plasmodium falciparum in organs such as the brain is considered important for pathogenicity. A similar phenomenon has been observed in mouse models of malaria, using the rodent parasite Plasmodium berghei, but it is unclear whether the P. falciparum proteins known to be involved in this process are conserved in the rodent...

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ژورنال

عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences

سال: 2017

ISSN: 0962-8452,1471-2954

DOI: 10.1098/rspb.2017.1067