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Title : Western Diet And Inflammation
link : Western Diet And Inflammation

Western Diet And Inflammation

A Western diet can not only promote cancer in mice, it also causes inflammation, and even after the mice are switched back to their normal diet, myeloid cells show enhanced immune response.  This change seems dependent on the product of the NLRP3 gene.  Thus, the high fat, calorie-dense Western diet can contribute to long-term, pro-inflammatory, negative alterations in the immune system and this likely is relevant for humans as well as mice.

Long-term epigenetic reprogramming of innate immune cells in response to microbes, also termed "trained immunity," causes prolonged altered cellular functionality to protect from secondary infections. Here, we investigated whether sterile triggers of inflammation induce trained immunity and thereby influence innate immune responses. Western diet (WD) feeding of Ldlr-/- mice induced systemic inflammation, which was undetectable in serum soon after mice were shifted back to a chow diet (CD). In contrast, myeloid cell responses toward innate stimuli remained broadly augmented. WD-induced transcriptomic and epigenomic reprogramming of myeloid progenitor cells led to increased proliferation and enhanced innate immune responses. Quantitative trait locus (QTL) analysis in human monocytes trained with oxidized low-density lipoprotein (oxLDL) and stimulated with lipopolysaccharide (LPS) suggested inflammasome-mediated trained immunity. Consistently, Nlrp3-/-/Ldlr-/- mice lacked WD-induced systemic inflammation, myeloid progenitor proliferation, and reprogramming. Hence, NLRP3 mediates trained immunity following WD and could thereby mediate the potentially deleterious effects of trained immunity in inflammatory diseases.

Eating more fruits and vegetables may indeed be a good idea.

Thus Article Western Diet And Inflammation

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