没有标签的小鼠子宫神经带的结构和机械特征
Joseph Thomas1, Kandace Donaldson2, Clara Gimenez2
1Bradley Department of Electrical and Computer Engineering, Virginia Tech, 460 Turner Street, Suite 303, Blacksburg, 24061, VA, USA.
Acta biomaterialia
|August 29, 2025
概括
无标签成像,包括光学连贯断层扫描 (OCT) 和第二子 (SHG) 显微镜,定量评估子宫神经带 (USL) 结构和机械反应. 这些方法揭示了USL在负载下的微观结构变化,有助于诊断骨盆器官脱落 (POP).
科学领域:
- 生物医学工程
- 组织力学
- 医学成像
背景情况:
- 子宫神经带 (USL) 对于骨盆器官的支持至关重要,并且在骨盆器官脱落 (POP) 中经常受到损害.
- 目前对USL完整性的诊断方法有限,这影响了对POP的治疗计划和结果.
- 需要使用非侵入性成像技术来评估USL结构功能关系.
研究的目的:
- 在机械加重之前,期间和之后使用无标签成像对子宫神经带 (USL) 的结构进行定量表征.
- 在单轴张力下研究USL形态与机械行为之间的关系.
- 探索光学连贯断层扫描 (OCT) 和第二子 (SHG) 显微镜用于诊断 POP 的潜力.
主要方法:
- 经过切除的鼠标USL进行了单轴拉伸测试.
- 光学连贯断层扫描 (OCT) 在加载过程中捕获了3D结构变化.
- 第二子显微镜可视化了原和光滑肌肉组织.
- 从OCT图像中提取了定量指标 (GDV,BEP).
主要成果:
- 在荷载下发现了USL结构部件的动态重新排列和故障.
- 全球深度变化 (GDV) 量化了USL异质性,而捆绑能量投影 (BEP) 测量了纤维重定向.
- 通过SHG显微镜检测出复杂的原纤维和光滑肌肉束的微观结构.
结论:
- 无标签成像技术 (OCT和SHG) 可以定量评估USL形态和机械反应.
- 这项研究提供了有关USL结构功能关系的见解.
- 这些方法具有开发盆腔器官脱落 (POP) 的非侵入性诊断工具的潜力.
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