Globally, cryptosporidiosis is a leading cause of childhood diarrheal disease and is a major risk factor for malnutrition and impairment of growth and cognitive development. In this issue of Cell Host & Microbe, Maradana et al. identify a target for dietary enhancement of innate immune defenses against cryptosporidiosis.
View Article and Find Full Text PDFGrowth differentiation factor 15 (GDF-15) is a cytokine that is widely used as a biomarker for the severity of diverse disease states. It also has been shown to play a protective role after tissue injury and to promote a negative energy balance during obesity and diabetes. In addition to its metabolic effects, GDF-15 also regulates the host's immune responses to infectious and noninfectious diseases.
View Article and Find Full Text PDFToxoplasma gondii exploits the migratory properties of monocytes and dendritic cells to promote tissue dissemination. Recently, ten Hoeve et al. reported that the parasite effector protein GRA28 conspires with host chromatin modifiers to confer dendritic cell-like features that convert sessile macrophages into migratory cells that transport infection to distal organs.
View Article and Find Full Text PDFMore than 2 billion people worldwide are infected with helminths. Thus, it is possible for individuals to experience concomitant infection with helminth and intracellular microbes. Although the helminth-induced type 2 response can suppress type 1 proinflammatory responses required for the immunity against intracellular pathogens in the context of a coinfection, conflicting evidence suggest that helminth infection can enhance antimicrobial immunity.
View Article and Find Full Text PDFResistance and tolerance are vital for survivability of the host-pathogen relationship. Virulence during infection in mice is mediated by parasite kinase-dependent antagonism of IFN-γ-induced host resistance. Whether avirulence requires expression of parasite factors that induce host tolerance mechanisms or is a default status reflecting the absence of resistance-interfering factors is not known.
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