微型囊系统 实现胃肠道中H2S的实时电化学检测
Justin M Stine1,2,3, Katie L Ruland1,2,3, Luke A Beardslee2
1Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, 20742, USA.
Advanced healthcare materials
|November 30, 2023
概括
这项研究引入了一种可摄入囊传感器,用于实时测量胃肠道中硫化 (H2S) 的含量. 这项技术可以帮助研究人员了解H2S.
科学领域:
- 生物医学工程 生物医学工程
- 胃肠病学 胃肠病学
- 分析化学 分析化学
背景情况:
- 硫化 (H2S) 是胃肠道 (GI) 恒温的关键信号分子.
- H2S 的失调与炎症性肠病和神经退行性疾病有关,但其确切作用尚不清楚.
研究的目的:
- 开发一种可摄入囊,用于实时无线测量内H2S.
- 研究这个传感器平台的潜力,以了解H2S在肠道健康和疾病中的作用.
主要方法:
- 一个电化学气体感应囊是用一个用Nafion固体聚合物电解质 (Nafion-Au) 修改的金 (Au) 电极设计的.
- 传感器的性能被评估为线性,灵敏度和对常见干扰气体 (H2,CH4,CO2) 的选择性.
- 通过模拟的腹部组织评估无线通信能力,以及传感器漂移和通知值.
主要成果:
- 纳菲安-奥传感器对H2S度 (0.214.5 ppm,R2 = 0.954) 呈现线性反应,具有高灵敏度 (12.4% ppm-1).
- 在H2S对H2 (比率1340:1),CH4和CO2方面实现了特殊的选择性.
- 囊通过GI模拟材料展示了可靠的无线数据传输,这表明体内可行性.
结论:
- 开发的H2S感应囊是用于体内胃肠道测量的可行分析工具.
- 这个平台可以促进对H2 S在健康和疾病中的复杂生物作用的理解.
- 实时监测内H2S为胃肠道研究和诊断提供了新的途径.
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