易于注射,无有机溶剂的自组装水凝平台用于内镜介导的胃肠多角切除术
Muzammil Kuddushi1, Hitasha Vithalani1, Hemant Singh1
1Department of Biological Sciences and Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382355, India.
Advanced healthcare materials
|February 24, 2025
概括
一种新的水凝,基于多糖醇酸盐的水凝 (PGSH),可以为内镜下粘膜解剖 (ESD) 和内镜粘膜切除 (EMR) 创建稳定的亚粘膜. 这种生物相容的水凝可以在内镜手术过程中改善消化肠道多片的去除和药物输送.
科学领域:
- 生物材料科学 生物材料科学
- 胃肠病学 胃肠病学
- 内視鏡外科手術 內視鏡外科手術
背景情况:
- 内镜下粘膜解剖 (ESD) 和内镜粘膜切除 (EMR) 对于去除胃肠病变至关重要.
- 有效的ESD/EMR需要一个稳定的粘膜下,而当前注射的盐水或乳糖无法始终提供这种稳定.
- 现有的聚合物注射剂在注射性和稳定性方面存在挑战.
研究的目的:
- 开发和评估一种新型的两性多糖醇酸基水凝 (PGSH),用于在内镜手术期间创建稳定的粘膜下部升高.
- 评估PGSH平台的可注射性,稳定性,药物载荷能力和生物相容性.
- 通过ESD调查PGSH的潜力,以提高通过ESD去除胃肠片的结果.
主要方法:
- 开发一种新的基于聚糖醇酸的基凝 (PGSH).
- 评估PGSH可注射性,剪切稀释性和使用各种针标的缓冲稳定性.
- 活体 (山羊GIT,血液) 和活体 (小鼠) 研究,以评估生物相容性,血液相容性和炎症反应.
- 在ESD程序的体内猪模型中应用PGSH.
主要成果:
- PGSH表现出良好的注射性,剪切稀释行为,并形成了长期持久的下粘膜.
- 水凝有效地封装了受控释放的水友性药物 (例如,链杆菌素).
- 活体外和活体内研究证实了PGSH的顺注射性,血红相容性,生物相容性,缺乏有毒器官特征或炎症性细胞因子过度表达.
- 猪模型中的ESD表明PGSH有潜力改善早期消化道息肉去除结果.
结论:
- PGSH是一种有前途的新型水凝平台,用于在内镜胃肠道手术中创建稳定的亚粘膜.
- 水凝的良好的注射性,稳定性,生物相容性和药物排泄能力比现有方法具有显著的优势.
- PGSH有潜力提高内镜下粘膜切割和粘膜切割对于胃肠道病变的疗效和安全性.
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