在星球细胞中抑制PDPN可以减少T2DM小鼠的海马炎症
Xiaohang Wang1,2,3, Qianqian Wang2, Zhensheng Cai2
1Department of Endocrinology, Affiliated Hospital of Yangzhou University, Yangzhou, China.
Frontiers in immunology
|February 6, 2025
概括
星球细胞中的波多普拉宁 (Pdpn) 导致神经炎症和2型糖尿病 (T2DM) 的认知衰退. 降低Pdpn表达可以防止T2DM诱导的血管痴呆.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 病理学 病理学 病理学
背景情况:
- 2型糖尿病 (T2DM) 增加了血管痴呆症 (VaD) 的风险.
- 过高血糖会激活星球细胞,导致神经炎症和脑血管损伤.
- 波多普拉宁 (Pdpn) 在激活的星球细胞中高度表达,并与炎症有关.
研究的目的:
- 研究Pdpn在T2DM诱导的海马体炎症和认知障碍中的作用.
- 为了确定Pdpn在星球细胞中的淘汰是否能在T2DM中提供对VaD的保护作用.
主要方法:
- 在T2DM天体细胞中使用qPCR和西方斑点验证了Pdpn基因表达.
- 利用腺相关病毒 (AAV) 在T2DM小鼠的星细胞中击败Pdpn.
- 通过一步下降测试评估认知功能,并通过免疫光测量神经炎症标志物 (IL-1β,IL-6,TNF-α,TGF-β1).
主要成果:
- Pdpn被确定为T2DM小鼠的星细胞中的一个关键上调基因.
- 在星球细胞中击败Pdpn改善了T2DM小鼠的记忆障碍,由延长的延迟和减少的错误证明.
- Pdpn knockdown显著降低了海马内IL-1β,IL-6,TNF-α和TGF-β1.1的水平.
结论:
- Pdpn在T2DM相关的神经炎症和认知衰退中发挥着重要作用.
- 在T2DM模型中,准星球细胞中的Pdpn显示出对海马炎症和VaD的保护作用.
相关概念视频
01:23Dipeptidyl Peptidase 4 Inhibitors
Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a significant...
01:24Type II Diabetes II: Pathophysiology
PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.