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相关概念视频

Glycosaminoglycans01:23

Glycosaminoglycans

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Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...
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Lysosomal Hydrolases01:22

Lysosomal Hydrolases

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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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相关实验视频

Updated: Jul 17, 2025

Quantitative Measurement of Intrathecally Synthesized Proteins in Mice
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Quantitative Measurement of Intrathecally Synthesized Proteins in Mice

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赫勒综合症 葡萄糖氨基甘油 脑脊液的减少 没有针对大脑的治疗

Troy C Lund1, Elizabeth Braunlin2, Lynda E Polgreen3

  • 1Department of Pediatrics, Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota, USA.

Annals of neurology
|September 7, 2023
PubMed
概括
此摘要是机器生成的。

新的赫勒综合征疗法旨在降解大脑中的GAG. 然而,在接受标准酶替代疗法的患者中,脑脊液GAG的降低对其作为血脑屏障透标志物的使用提出了质疑.

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Fractionation for Resolution of Soluble and Insoluble Huntingtin Species
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相关实验视频

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科学领域:

  • 生物化学 生物化学
  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.

背景情况:

  • 赫勒综合征是一种罕见的遗传性疾病,由于糖氨基甘油 (GAG) 积累而导致神经退行.
  • 新型疗法旨在穿越血脑屏障 (BBB),降低GAG并阻止神经退行.
  • 大脑脊髓液 (CSF) 的GAG水平通常用于推断治疗的BBB透率,但这种假设需要验证.

研究的目的:

  • 调查标准酶替代疗法 (ERT),它不穿透BBB,影响CSF的GAG水平.
  • 评估CSFGAG作为哈勒综合征中BBB透的生物标志物的实用性.

主要方法:

  • 一个比较研究前移植的CSFGAG水平.
  • 之前未接受治疗的赫勒综合征患者 (n=19) 与接受标准非BBB透性ERT (n=12) 的患者之间的比较.

主要成果:

  • 与以前未接受治疗的患者相比,接受标准ERT的患者的CSF GAG水平明显较低.
  • 这一发现挑战了下降的CSF GAG仅仅表明GAG降解疗法的BBB透的假设.

结论:

  • 标准ERT显著降低了CSFGAG水平,独立于BBB透.
  • 未来的研究应该集中在标准ERT和新型BBB透疗法之间比较CSF的GAG降低,以准确评估治疗疗效和BBB向.