质子抑制剂通过p38-MAPK/NF-κB信号通路增加了肠道上皮层的细胞透性
Meng Zhang1, Wei Liu1, Yunhui Liu1
1Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Disease, Huazhong University of Science and Technology, 1095, Jiefang Avenue, Wuhan, 430030, Hubei Province, People's Republic of China.
质子抑制剂 (PPI) 通过通过p38-MAPK/NF-κB通路减少奥克卢丁的表达来增加肠道的透性. 这突显了PPI治疗对肠道屏障的潜在风险.
科学领域:
- 胃肠病学 胃肠病学
- 药理学 药理学是指药理学的学科.
- 细胞生物学 细胞生物学
背景情况:
- 质子抑制剂 (PPI) 广泛使用,但与肠道屏障功能障碍等不良影响有关.
- 由于PPI诱导肠道透性的机制尚不清楚,先前的研究重点是微生物群或pH值.
- 本研究研究了PPI对肠上皮质透性和潜在信号通路的直接影响.
研究的目的:
- 在体外和体内检查PPI使用与肠道上皮层细胞透性之间的关系.
- 探索PPI诱导的肠道屏障功能障碍中涉及的特定信号通路机制.
主要方法:
- 潘托普拉给C57BL/6J小鼠和Caco-2BBe细胞单层.
- 评估了表皮形态 (H&E),细胞透性 (FITC-dextran 4000,TEER) 和奥克卢丁表达 (qPCR,西斑,免疫光).
- 研究了p38-MAPK和NF-κB信号通路,包括p38-MAPK抑制的影响.
主要成果:
- PPI没有引起宏观的肠病变,但显著增加了肠道上皮质的细胞透性.
- PPI降低了奥克卢丁mRNA和蛋白质的表达,降低了TEER值,并增加了FITC-dextran 4000在阴,阴和Caco-2BBe细胞中的透性.
- PPI提高了Caco-2BBe细胞中的p38-MAPK和NF-κB酸化;p38-MAPK抑制恢复了奥克卢丁表达和屏障功能.
结论:
- PPI通过减少奥克卢丁的表达,直接增强肠道上皮层的细胞透性.
- 通过p38-MAPK/NF-κB信号通路调解PPI诱导的肠壁功能障碍.
- 临床医生应对PPI对肠道屏障的潜在不良影响保持谨慎.
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