Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.
Center of Excellence in Translational Research on Immunology and Immune-Mediated Diseases (CETRII), Department of Microbiology, Faculty of Medicine, Bangkok 10330, Thailand.
Int J Mol Sci. 2022 Jun 24;23(13):7050. doi: 10.3390/ijms23137050.
is an opportunistic pathogen and a commensal organism that is possibly enhanced in several conditions with gut dysbiosis, and frequently detectable together with overgrowth. Here, with or without was daily orally administered for 3 months in 0.8% dextran sulfate solution-induced mucositis mice and also tested . As such, worsened DSS-colitis as demonstrated by mortality, leaky gut (FITC-dextran assay, bacteremia, endotoxemia, and serum beta-glucan), gut dysbiosis (increased Deferribacteres from fecal microbiome analysis), liver pathology (histopathology), liver apoptosis (activated caspase 3), and cytokines (in serum and in the internal organs) when compared with administered DSS mice. The combination of heat-killed plus mildly facilitated inflammation in enterocytes (Caco-2), hepatocytes (HepG2), and THP-1-derived macrophages as indicated by supernatant cytokines or the gene expression. The addition of heat-killed into preparations upregulated , reduced (an intestinal tight junction molecule), and worsened enterocyte integrity (transepithelial electrical resistance) in Caco-2 and enhanced and (apoptosis genes) in HepG2 when compared with heat-killed alone. In conclusion, enhanced enterocyte inflammation (partly through upregulation and gut dysbiosis) that induced gut translocation of endotoxin and beta-glucan causing hyper-inflammatory responses, especially in hepatocytes and macrophages.
是一种机会性病原体和共生生物,在肠道菌群失调的几种情况下可能会增强,并且经常与过度生长一起检测到。在这里,在 0.8%葡聚糖硫酸钠溶液诱导的粘膜炎小鼠中,每天口服或不口服 ,持续 3 个月,并进行 测试。结果表明,与给予 DSS 的小鼠相比, 加重了 DSS-结肠炎,表现为死亡率、肠道渗漏(FITC-右旋糖酐测定、菌血症、内毒素血症和血清β-葡聚糖)、肠道菌群失调(粪便微生物组分析中 Deferribacteres 的增加)、肝病理(组织病理学)、肝凋亡(激活的 caspase 3)和细胞因子(血清和内脏器官)。与单独给予 DSS 的小鼠相比,热灭活的 加上 轻度促进了肠细胞(Caco-2)、肝细胞(HepG2)和 THP-1 衍生的巨噬细胞中的炎症,这表明上清液细胞因子或基因表达增加。与单独热灭活的 相比,将热灭活的 加入 制剂中可上调 ,降低 (一种肠道紧密连接分子),并破坏 Caco-2 中的肠细胞完整性(跨上皮电阻),并增强 HepG2 中的 和 (凋亡基因)。总之, 增强了肠细胞炎症(部分通过 上调和肠道菌群失调),导致内毒素和β-葡聚糖从肠道易位,引起过度炎症反应,特别是在肝细胞和巨噬细胞中。