超声波与微泡疗法结合对瘤低氧微环境的影响
Yuyi Feng1, Danxia Qiu1, Yangcheng He1
1Department of Ultrasound, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, China.
Frontiers in pharmacology
|January 28, 2025
概括
使用微泡的低频超声波通过改善血流来有效地减少瘤缺氧. 这种新的方法显示了提高癌症治疗效率和克服治疗耐药性的前景.
科学领域:
- 在瘤学瘤学.
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 瘤缺氧,以低氧水平为特征,是有效治疗癌症的重要障碍.
- 克服瘤缺氧的策略包括增强瘤血液输液和氧气供应.
- 超声波与微泡相结合对瘤缺氧的影响需要进一步调查.
研究的目的:
- 评估低频非聚焦超声波和微气泡对瘤微环境缺氧的影响.
- 为了确定减轻瘤缺氧的最佳超声波参数.
- 评估这种方法在改善癌症治疗结果方面的潜力.
主要方法:
- 携带VX2瘤的子在不同的声压和脉冲重复频率下接受了超声波和微泡治疗.
- 用对比增强超声波 (CEUS) 评估瘤血液输液.
- 瘤组织氧化率直接测量,并通过免疫组织化学染色测量缺氧诱导因子-1α (HIF-1α).
主要成果:
- 低频超声波 (0.5 MPa/20 Hz和0.5 MPa/40 Hz) 与微泡相结合,显著增加了瘤组织的血液输液.
- 这些超声波参数也导致了瘤组织氧化量的可衡量的改善.
- 组合疗法有效地减少了瘤缺氧.
结论:
- 使用微泡的低频超声波是缓解瘤缺氧的有希望的策略.
- 这种方法可以增强瘤血液 perfusion 和瘤微环境中的氧气水平.
- 这种方法为提高癌症疗法的疗效和克服治疗耐药性的潜在新途径提供了机会.
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