通过透射电子显微镜对精子中的超结构缺陷进行分析,用于阿斯动物精子症患者:来自中国多个中心的研究
Mo-Qi Lv1,2, Hai-Xu Wang3, Hou-Yang Chen4
1Department of Pathology, School of Basic Medical Sciences, Medical School, Xi'an Jiaotong University, Xi'an, 710061, China.
Biomarker research
|October 9, 2025
概括
中国的精患者表现出显著的精子尾部超结构缺陷,特别是线粒体和轴突膜异常. 与光显微镜相比,传输电子显微镜 (TEM) 提供了优越的缺陷定位,以改善诊断.
科学领域:
- 安德罗学与人类学
- 生殖医学 生殖医学
- 细胞生物学 细胞生物学
背景情况:
- 由于精子运动性差,而表现为精子不育症 (Asthenozoospermia),是男性不育的主要原因.
- 传统的光显微镜在识别精子器官内的特定超结构缺陷方面存在局限性.
- 了解精子超结构对于诊断和治疗男性因子不孕症至关重要.
研究的目的:
- 在中国患者中鉴定和描述精子的超结构特征.
- 评估这些超结构性缺陷的临床影响.
- 为了比较传输电子显微镜 (TEM) 与传统光显微镜的诊断能力.
主要方法:
- 一项全国性的研究,涉及到来自中国的106名精患者和33名肥沃对照.
- 传输电子显微镜 (TEM) 用于详细检查精子超结构,专注于精子尾部.
- 光显微镜用于常规评估精子质量参数 (流动性,动力学).
主要成果:
- 与对照人群相比,阿斯动物精子症患者在精子尾部表现出显著的超结构缺陷,包括线粒体和轴突膜异常.
- 患者根据尾部超结构进行分类:正常,孤立的轴膜缺陷,孤立的线粒体缺陷或组合缺陷.
- 所有具有超结构缺陷的组都比正常超结构组显著降低了精子运动/动力学,尽管缺陷子组之间没有发现差异.
结论:
- 传输电子显微镜 (TEM) 有效地识别精子尾巴中的特定器官缺陷,克服光显微镜的局限性.
- 超结构性精子尾部缺陷在中国的精子精子症患者中很常见,与精子运动性降低相关.
- 基于TEM的超结构分析有可能为男性不孕症的个性化诊断和治疗策略提供信息.
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