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Malaria Parasite Infection Compromises Control of Concurrent Systemic Non-typhoidal Infection via IL-10-Mediated Alteration of Myeloid Cell Function


Non-typhoidal Salmonella serotypes (NTS) most frequently cause diarrheal disease, which is self-limiting. However, in sub-Saharan Africa, NTS is one of the most common causes of life-threatening bloodstream infections. Individuals with these bloodstream infections frequently have an underlying condition such as HIV in adults or malaria in children. We used a mouse model to investigate why malaria predisposes children to invasive NTS infections. Our results implicate an anti-inflammatory response induced by malaria parasites via the cytokine IL-10 in promoting increased growth of bacteria that have disseminated from the intestine to other organs of the body. This response is beneficial in that it prevents death from malaria, but has an adverse effect on phagocytic cells, blocking their ability to control growth of bacteria that have disseminated from the intestine to other organs of the body.


Vyšlo v časopise: Malaria Parasite Infection Compromises Control of Concurrent Systemic Non-typhoidal Infection via IL-10-Mediated Alteration of Myeloid Cell Function. PLoS Pathog 10(5): e32767. doi:10.1371/journal.ppat.1004049
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1004049

Souhrn

Non-typhoidal Salmonella serotypes (NTS) most frequently cause diarrheal disease, which is self-limiting. However, in sub-Saharan Africa, NTS is one of the most common causes of life-threatening bloodstream infections. Individuals with these bloodstream infections frequently have an underlying condition such as HIV in adults or malaria in children. We used a mouse model to investigate why malaria predisposes children to invasive NTS infections. Our results implicate an anti-inflammatory response induced by malaria parasites via the cytokine IL-10 in promoting increased growth of bacteria that have disseminated from the intestine to other organs of the body. This response is beneficial in that it prevents death from malaria, but has an adverse effect on phagocytic cells, blocking their ability to control growth of bacteria that have disseminated from the intestine to other organs of the body.


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Hygiena a epidemiológia Infekčné lekárstvo Laboratórium

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