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相关概念视频

IP3/DAG Signaling Pathway01:11

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Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
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In the secretory pathway, vesicles transport proteins from one cellular compartment to another in forward transport to deliver the protein to its correct location. Occasionally, misfolded proteins and incorrect proteins escape their original compartments, and a retrieval pathway is used to return the escaped proteins to their original compartment.
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Direct Motor Pathways01:11

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The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
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Indirect Motor Pathways01:22

Indirect Motor Pathways

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
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Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
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Pathophysiology of Cardiac Performance

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Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
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相关实验视频

Updated: Jun 11, 2025

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生物路径网:通过路径表示学习,提高生物医学知识图中的链接预测.

Yue Hu1,2, Svitlana Oleshko1,3, Samuele Firmani1,3

  • 1Computational Health Center, Helmholtz Center Munich, Ingolstaedter Landstrasse 1, Neuherberg, 85764, Bavaria, Germany.

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|October 7, 2024
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概括
此摘要是机器生成的。

BioPathNet 通过基于路径的推理增强了生物医学联系预测,提高了药物发现的准确性和可解释性. 这种新型图形神经网络框架为个性化医学提供了宝贵的分子洞察力.

关键词:
生物医学知识图表图表神经网络的神经网络链接预测 链接预测

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科学领域:

  • 生物医学信息学是生物医学信息学.
  • 网络生物学 网络生物学
  • 机器学习用于医疗保健

背景情况:

  • 生物医学网络分析对于医学进步至关重要.
  • 传统的链接预测方法与复杂性和可解释性作斗争.
  • 现有的表示学习技术面临着可扩展性挑战.

研究的目的:

  • 介绍BioPathNet,一个新的图形神经网络框架,用于生物医学知识图中的链接预测.
  • 通过使用基于路径的推理来提高预测准确性和可解释性.
  • 为了克服传统节点嵌入方法的局限性.

主要方法:

  • 开发了BioPathNet,这是一个基于神经贝尔曼-福特网络 (NBFNet) 的框架.
  • 整合了基于路径的推理来学习节点对之间的表示.
  • 利用背景监管图 (BRG) 进行增强的消息传递和严格的负面采样.

主要成果:

  • 在基因功能注释,药物疾病指示,合成致命性和lncRNA-mRNA相互作用预测方面,BioPathNet始终优于现有的方法.
  • 在各种链接预测任务中实现了强大的性能和多功能性.
  • 预测了新的药物指示,并确定了新的合成致死性基因对和调节性相互作用.

结论:

  • 生物路径网为生物医学链接预测提供了卓越的准确性和可解释性.
  • 该框架可以可视化影响力路径,促进生物验证和分子洞察力.
  • 生物路径网是药物发现,个性化医学和更广泛的生物研究的宝贵工具.