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相关概念视频

Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.
Development of the Lymphatic System01:15

Development of the Lymphatic System

The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...

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相关实验视频

Updated: May 10, 2026

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting
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淋巴缺陷:分类,发病和治疗策略

Chaonan Zhang1, Jing Liu2, Yao Wang2

  • 1School of Clinical Medicine, Shandong Second Medical University, Weifang, Shandong, P.R. China; Laboratory of Translational Medicine in Microvascular Regulation, Medical Research Center, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, P.R. China; Shandong Provincial Key Medical and Health Laboratory of Translational Medicine in Microvascular Aging, Jinan, Shandong, P.R. China; Laboratory of Future Industry of Gene Editing in Vascular Endothelial Cells of Universities in Shandong Province, Jinan, Shandong, P.R. China.

Annals of vascular surgery
|May 25, 2025
PubMed
概括

淋巴发育不良 (LM) 是由影响PI3K/AKT/mTOR和VEGF等关键信号通路的遗传突变驱动的淋巴系统瘤. 目前的治疗包括mTOR抑制剂和VEGFR-3抑制剂,为患者提供了新的希望.

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科学领域:

  • 血管生物学 血管生物学
  • 发展生物学 发展生物学
  • 在瘤学瘤学.

背景情况:

  • 淋巴形 (LM) 是一种先天性淋巴系统瘤,由异常的淋巴内皮细胞 (LEC) 发育引起.
  • 瘤表现为结构缺陷,异常增殖和LEC的囊性扩张,通常在头部,部和下部.
  • 了解分子病原体对于开发向疗法至关重要.

研究的目的:

  • 审查临床表现,分子致病和淋巴发育不良的治疗策略的最新进展.
  • 巩固当前关于遗传突变和信号通路的知识,这些遗传突变和信号通路与LM发展有关.
  • 突出新兴的治疗点及其临床疗效.

主要方法:

  • 关于淋巴发育不良的最近研究的文献综述.
  • 分析分子机制,包括遗传突变和信号通路失调 (PI3K/AKT/mTOR,VEGF,Wnt/β-catenin).
  • 综合关于临床表现和治疗干预的信息.

主要成果:

  • 在PI3K子单元的突变激活PI3K/AKT/mTOR通路,促进LM LEC增殖和淋巴血管生成.
  • 血管内皮生长因子C (VEGF-C) 和其受体VEGFR-3在LEC的生存,增殖和迁移中发挥着关键作用.
  • 在Wnt/β-catenin通路和asparaginyl-tRNA合成酶中的特定遗传变化与LM亚型有关.
  • mTOR 抑制剂 (例如,西罗) 和 VEGFR-3 抑制剂在LM治疗中显示出有前途.

结论:

  • 淋巴细胞形是由涉及失调信号通路的复杂分子事件造成的.
  • 向疗法,特别是mTOR和VEGFR-3抑制剂,代表了LM管理的重大进展.
  • 对精确分子机制的进一步研究将使更个性化和更有效的治疗策略成为可能.