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相关概念视频

Liver Physiology01:30

Liver Physiology

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The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of  70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
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Major Hormones and Their Functions01:27

Major Hormones and Their Functions

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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
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Transducer Mechanism: Nuclear Receptors01:31

Transducer Mechanism: Nuclear Receptors

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Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
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Peroxisomes01:24

Peroxisomes

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Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
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Functions of Thyroid Hormones01:18

Functions of Thyroid Hormones

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The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
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Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

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Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
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10型17β-类固醇脱酶在健康和疾病中的作用

Xue-Ying He1, Janusz Frackowiak2, Song-Yu Yang1,3

  • 1Department of Molecular Biology, NYS Institute for Basic Research in Developmental Disabilities, Staten Island, NY 10314, USA.

Journal of personalized medicine
|August 27, 2025
PubMed
概括

10型17β-基类固醇脱酶 (17β-HSD10) 涉及神经退行. 新发现表明Aβ抑制17β-HSD10,为阿尔茨海默病的治疗提供了一个新的治疗点.

关键词:
在ABAD阿尔茨海默病癌症神经类固醇代谢

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Author Spotlight: Exploring Huotan Jiedu Tongluo Decoction as an Antihypertensive Drug
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Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
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科学领域:

  • 生物化学
  • 神经科学
  • 分子生物学

背景情况:

  • 17β- 类脱酶类型10 (17β- HSD10) 是由HSD17B10基因编码的,并参与神经退行和致癌.
  • 这种线粒体蛋白在代谢途径中至关重要,包括氨基酸降解和神经质代谢.
  • 之前有争议的报道表明17β-HSD10作为Aβ结合性酒精脱酶 (ABAD) 或与ER相关的Aβ结合蛋白 (ERAB) 起作用.

研究的目的:

  • 澄清17β-HSD10在阿尔茨海默氏症发病过程中的作用.
  • 调查粉素-β (Aβ) 和17β-HSD10之间的相互作用.
  • 重新评估17β-HSD10的拟议ABAD/ERAB功能.

主要方法:

  • 对ABAD/ERAB试验的动力参数 (Km,Ki) 和实验条件的分析.
  • 复制之前的实验结果.
  • 对Aβ对17β-HSD10活性与ABAD/ERAB活性的影响的比较.

主要成果:

  • 支持ABAD/ERAB作用的数据由于非生理条件和不可靠的估计结果被发现是伪造的.
  • Aβ被证明可以抑制17β-HSD10活性,这与ABAD/ERAB假设相矛盾.
  • 在阿尔茨海默氏病的大脑中观察到17β-HSD10水平升高,以及Aβ和化Tau.

结论:

  • 对于17β-HSD10的ABAD/ERAB假设没有强有力的证据支持.
  • Aβ直接抑制了17β-HSD10,这表明了Aβ诱导的神经毒性的机制.
  • 了解17β-HSD10在阿尔茨海默病中的作用对于开发新的治疗策略至关重要.