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Complex host genetic susceptibility to Staphylococcus aureus infections

机译:复合宿主对金黄色葡萄球菌感染的遗传易感性

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Understanding of the host genetic susceptibility to carriage of, and infections, due to Staphylococcus aureus, a nosocomial pathogen, is still in its nascent stages. Mouse models show variable susceptibility to S. aureus infections across mouse strains and disease models with roles for signaling pathways involving Toll-like receptors (TLR-1, TLR-2, and TLR-6), interleukins (IL-4, IL-6, IL-10, and IL-13), chemokines [CXC ligand (CXCL)-1 and CXCL-2], and T helper (Th)1/Th2 responses. Genome-wide association studies (GWASs) for carriage in humans identified SNPs in IL4, DEFB1, CRP, and VDR for persistent nasal carriage. NR3C1 haplotypes may either enhance risk or provide protection from colonization. GWASs for all S. aureus diseases have suggested roles for DAPK3, a kinase, and XRN1, a nuclease, while CDON could have a role in complicated bacteremia. More studies are needed to identify host susceptibility genes along with confirmation from functional assays.
机译:由于医院内的病原体金黄色葡萄球菌对宿主携带和感染的遗传易感性仍处于起步阶段。小鼠模型显示跨小鼠品系和疾病模型对金黄色葡萄球菌感染的易感性,其信号通路涉及Toll样受体(TLR-1,TLR-2和TLR-6),白介素(IL-4,IL-6) ,IL-10和IL-13),趋化因子[CXC配体(CXCL)-1和CXCL-2]和T辅助(Th)1 / Th2反应。用于人类运输的全基因组关联研究(GWAS)在IL4,DEFB1,CRP和VDR中确定了SNPs可以持续地进行鼻运输。 NR3C1单倍型可能会增加风险或提供防止定植的保护。所有金黄色葡萄球菌疾病的GWASs提示了DAPK3(一种激酶)和XRN1(一种核酸酶)的作用,而CDON可能在复杂菌血症中起作用。需要更多的研究来鉴定宿主易感基因以及功能测定的确认。

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