Controlling functional homeostasis of ileal resident macrophages by vitamin B12 during steady state and Salmonella infection in mice. Yong Ge

Mucosal Immunol. 2024 Sep 8:S1933-0219(24)00091-6. doi: 10.1016/j.mucimm.2024.08.011. Online ahead of print. ABSTRACT Dietary micronutrients, particularly vitamin B12 (VB12), profoundly influence the physiological maintenance and function of intestinal cells. However, it is still unclear whether VB12 modulates the transcriptional and metabolic programming of ileal macrophages (iMacs), thereby contributing to intestinal homeostasis. Using multiomic approaches, we demonstrated … Read more

The kynurenine pathway regulated by intestinal innate lymphoid cells mediates postoperative cognitive dysfunction. Wan-Bing Dai

Mucosal Immunol. 2024 Sep 7:S1933-0219(24)00095-3. doi: 10.1016/j.mucimm.2024.09.002. Online ahead of print. ABSTRACT Postoperative cognitive dysfunction (POCD) is a prevalent neurological complication that can impair learning and memory for days, months, or even years after anesthesia/surgery. POCD is strongly associated with an altered composition of the gut microbiota (dysbiosis), but the accompanying metabolic changes and their … Read more

MicroRNA-142 regulates gut associated lymphoid tissues and group 3 innate lymphoid cells. Luke B Roberts

Mucosal Immunol. 2024 Sep 7:S1933-0219(24)00094-1. doi: 10.1016/j.mucimm.2024.09.001. Online ahead of print. ABSTRACT The transcriptomic signatures that shape responses of innate lymphoid cells (ILCs) have been well characterised, however post-transcriptional mechanisms which regulate their development and activity remain poorly understood. We demonstrate that ILC groups of the intestinal lamina propria express mature forms of microRNA-142 (miR-142), … Read more

Dysregulated NOX1-NOS2 activity as hallmark of ileitis in mice. Julie Drieu La Rochelle

Mucosal Immunol. 2024 Sep 7:S1933-0219(24)00093-X. doi: 10.1016/j.mucimm.2024.08.012. Online ahead of print. ABSTRACT Inflammation of the ileum, or ileitis, is commonly caused by Crohn’s disease (CD) but can also accompany ulcerative colitis (backwash ileitis), infections or drug-related damage. Oxidative tissue injury triggered by reactive oxygen species (ROS) is considered part of the ileitis etiology. However, not … Read more

Dysregulated myeloid differentiation in colitis is induced by inflammatory osteoclasts in a TNFα-dependent manner. Maria-Bernadette Madel

Mucosal Immunol. 2024 Sep 25:S1933-0219(24)00098-9. doi: 10.1016/j.mucimm.2024.09.005. Online ahead of print. ABSTRACT Inflammatory bowel disease (IBD) is characterized by very severe intestinal inflammation associated with extra-intestinal manifestations. One of the most critical ones is bone destruction, which remains a major cause of morbidity and a risk factor for osteopenia and osteoporosis in IBD patients. In … Read more

Epithelial dysfunction is prevented by IL-22 treatment in a <i>Citrobacter rodentium</i>-induced colitis model that shares similarities with inflammatory bowel disease

Mucosal Immunology, Published online: 13 November 2022; doi:10.1038/s41385-022-00577-wEpithelial dysfunction is prevented by IL-22 treatment in a Citrobacter rodentium-induced colitis model that shares similarities with inflammatory bo…

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