淋巴毛细化在不同的纤维类型的老鼠骨肌肉与生长和年龄的不同
Yoshikazu Taketa1, Keigo Tamakoshi1,2, Kazuki Hotta3,4
1Department of Physical Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan.
Microcirculation (New York, N.Y. : 1994)
|July 29, 2024
概括
鼠骨肌中的淋巴毛细管密度在幼鼠中达到顶峰,并随着年龄的增长而下降,特别是在快速抽的肌肉中. 缓慢抽的肌肉显示出更大的淋巴细胞对衰老的弹性.
科学领域:
- 生理学 生理学 生理学
- 衰老研究研究 衰老研究
- 淋巴系统生物学 淋巴系统生物学
背景情况:
- 骨肌的淋巴毛细血管在液体平衡和废物清除中起着至关重要的作用.
- 了解衰老对淋巴功能的影响对于解决与年龄相关的肌肉病理至关重要.
研究的目的:
- 调查生长和衰老对大鼠骨肌肉中淋巴毛细血管的影响.
- 为了比较不同类型的骨肌纤维中的淋巴毛细血管与年龄相关的变化.
主要方法:
- 淋巴毛细血管的组织学分析使用LYVE-1染色在前 (TA),延伸指长长 (EDL) 和单体 (SOL) 肌肉.
- 用CD31染色对血液毛细血管的免疫组织化学评估.
- 实时PCR测量淋巴细胞原生因子的mRNA表达.
主要成果:
- 淋巴毛细管密度在幼鼠中最高,并且随着年龄的增长而下降.
- 快速抽的肌肉 (TA,EDL) 与缓慢抽的肌肉 (SOL) 相比,淋巴毛细血管与年龄相关的衰退更为明显.
- SOL 肌肉保持了较高的淋巴毛细血管丰度,并且与年龄相关的衰退较小,在青少年和年轻大鼠中,淋巴血管原因子的升调.
结论:
- 淋巴毛细血管与年龄相关的衰退在快速抽的骨肌肉中更为显著.
- 这种下降可能与与年龄相关的肌肉缩有关.
- 缓慢抽的肌肉表现出更强的弹性,与年龄相关的变化,在淋巴毛细体的毛细化.
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