帕金森病的慢性便秘:临床特征和对肠道上皮屏障的分子见解
Alexandros Ioannou1, Anna Costanzini2, Fiorella Giancola3
1Gastroenterology Department, "Alexandra" General Hospital of Athens, Greece (Alexandros Ioannou).
Annals of gastroenterology
|January 15, 2024
概括
伴有慢性便秘 (CC) 的帕金森病 (PD) 显示肠上皮质屏障 (IEB) 基因表达发生变化,特别是在ZO-1,OCCL-1和CLDN4.4等紧结蛋白中. 这些变化表明IEB功能障碍有助于PD相关的胃肠道问题.
科学领域:
- 胃肠病学 胃肠病学
- 神经学 神经学
- 分子生物学分子生物学
背景情况:
- 慢性便秘 (CC) 是帕金森病 (PD) 的重要症状,其原因尚不清楚.
- 肠道神经系统 (ENS) 和肠上皮屏障 (IEB) 的变化是PD相关的CC的潜在因素.
- 这项研究调查了患有CC的PD患者IEB的分子变化.
研究的目的:
- 探索患有帕金森病的慢性便秘 (PD/CC) 患者肠上皮屏障 (IEB) 的分子差异.
- 将PD/CC患者的IEB标志物与单独患有CC患者和健康对照患者进行比较.
- 为了将IEB变化与PD/CC中的功能性胃肠道参数相关联.
主要方法:
- 招募了三个组:PD/CC患者,CC患者和对照组.
- 评估消化肠道功能,使用直肠计量 (AM) 和过渡时间 (TT).
- 通过RT-qPCR,免疫斑块和免疫光检测分析了IEB紧结标记物 (CLDN4,OCCL-1,ZO-1) 的基因和蛋白质表达的结肠活检.
主要成果:
- 与对照组相比,PD/CC患者的CLDN4,OCCL-1和ZO-1基因表达更高.
- 在PD/CC患者和对照人群中观察到CLDN4和OCCL-1蛋白质水平下降的趋势.
- 虽然在统计学上不显著,但在PD/CC患者中发现了血管活性肠道多 (VIP) mRNA,蛋白质和纤维密度的下降趋势.
结论:
- 在PD/CC中,功能性过渡和门功能障碍与ZO-1,OCCL-1和CLDN4.4的差异表达有关.
- 这些发现支持了改变肠上皮屏障 (IEB) 在帕金森病的病理生理学中起作用的假设.
- IEB的变化可能会导致PD中观察到的神经元异常.
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