来自 Porphyromonas gingivalis 的生根痛会通过直接的蛋白质溶解作用降低胰岛素受体,从而导致胰岛素耐药性
Fen Liu1,2,3, Bofeng Zhu4,5, Ying An3
1Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen, China.
International journal of oral science
|July 31, 2024
概括
引起牙周炎的细菌 Porphyromonas gingivalis 可以通过牙周痛迁移并降解胰岛素受体 (INSR),导致胰岛素抵抗 (IR) 和潜在的糖尿病. 针对这种口腔病原体可能有助于预防代谢性疾病.
科学领域:
- 口腔微生物学 口腔微生物学
- 代谢性疾病研究研究.
- 免疫学 免疫学 免疫学
背景情况:
- 牙周炎是糖尿病发展的重要危险因素.
- 菌对胰岛素耐药性 (IR) 的贡献的具体机制尚未完全理解.
研究的目的:
- 研究P. gingivalis在IR.发展中的功能作用和机制.
- 在临床样本和实验模型中确定P. gingivalis和IR之间的相关性.
主要方法:
- 对临床样本进行分析,以确定P. gingivalis负载和IR分数之间的相关性.
- 在体外研究中使用与P. gingivalis共同培养的肝细胞,肌细胞和脂肪细胞.
- 在体内研究涉及P. gingivalis口服给小鼠.
- 在宿主组织中检测P. gingivalis和gingipain.
- 评估胰岛素受体 (INSR) 表达,胰岛素结合和葡萄糖吸收.
- 对P. gingivalis的基因操纵 (牙周疼痛淘汰).
主要成果:
- 临床数据显示P. gingivalis水平与IR得分之间存在相关性.
- 在体外,P. gingivalis减少了关键代谢细胞中的葡萄糖吸收和INSR表达.
- 食P. gingivalis的小鼠表现出IR的迹象,并且在肝脏,肌肉和脂肪组织中发现了这种细菌.
- 银痛局部化与下调的INSR,并直接降解了INSR的胰岛素结合区域.
- 淘汰牙疼痛减弱了P. gingivalis. 诱导红外线的影响.
结论:
- 远程迁移的P. gingivalis通过牙痛降解INSR,直接导致IR.
- 针对牙周病原体如P. gingivalis提供了一种新的糖尿病预防策略.
- 这项研究为牙周炎症如何影响全身代谢健康提供了新的见解.
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