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相关概念视频

Preclinical Development: Overview01:28

Preclinical Development: Overview

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Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
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Clinical Trials: Overview01:11

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Drug Discovery: Overview01:26

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Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
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Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
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In Vitro Drug Release Testing: Overview, Development and Validation01:10

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In vitro dissolution and drug release tests assess how quickly and how much of a drug is released from its dosage form into an aqueous medium under standardized laboratory conditions. These tests are essential tools in pharmaceutical development and quality assurance, offering insight into the drug's performance before clinical use.During formulation development, dissolution testing identifies incomplete or inconsistent drug release issues. It also supports decisions on selecting the optimal...
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Drug Regulation01:25

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Drug regulation encompasses the management of drug usage by evaluating its safety and efficacy through assessments conducted by regulatory authorities. Regrettably, the history of drug regulation is marred by several catastrophic events. One such incident is the Elixir Sulfanilamide tragedy, in which the toxic compound diethyl glycol was included in a sweet-tasting medication, leading to numerous fatalities. This event prompted the enactment of the Food, Drug, and Cosmetic Act in 1938. Under...
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Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
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药物开发 药物开发

Wenbo Zhang1, Ming Chen1, Qi Tian1

  • 1The First Affiliated Hospital of Chongqing Medical University, Chongqing, Chongqing, China.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
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概括
此摘要是机器生成的。

对阿尔茨海默病 (AD) 的Lecanemab治疗显示了大脑功能的变化,神经活化增加和功能连接 (FC) 改变,在时钟绘图测试 (CDT) 期间通过功能近红外光谱学 (fNIRS) 检测到. 这些发现表明,在接受治疗的阿兹海默症患者中,潜在的网络重组.

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In Vitro Three-Dimensional Sprouting Assay of Angiogenesis Using Mouse Embryonic Stem Cells for Vascular Disease Modeling and Drug Testing
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科学领域:

  • 神经科学是一个神经科学.
  • 医疗成像医学成像
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 莱卡尼马布是一种单克隆抗体,可降低阿尔茨海默病 (AD) 中的粉样β (Aβ) 负担.
  • 莱卡尼马布对大脑功能的影响尚不清楚.
  • 功能近红外光谱 (fNIRS) 可以评估大脑活动.

研究的目的:

  • 在阿兹海默症患者接受lecanemab治疗后,研究大脑功能的变化.
  • 为了评估fNIRS在时钟绘图测试 (CDT) 期间的实用性,以监测治疗效果.
  • 评估血液动力学反应和功能连接 (FC) 的变化.

主要方法:

  • 三名AD患者接受了lecanemab治疗12周.
  • 在基线和治疗后的CDT范式中使用了fNIRS.
  • 通用线性模型 (GLM) 分析了血液动力学反应 (β1值).
  • 在预定义的兴趣区域 (ROI) 之间评估了功能连接 (FC).
  • 配对的t测试比较了CDT得分和fNIRS指标.

主要成果:

  • 没有观察到CDT得分的显著改善 (p = 0.157).
  • fNIRS揭示了右体感皮层β1值的显著增加 (p < 0.05).
  • 在右额头-左头和右头-右头区域 (p < 0.05) 之间观察到增强的FC.
  • 观察到左额头至右额头顶部区域之间减少了FC (p < 0.05).

结论:

  • 莱卡尼马布治疗可能会改变AD中的大脑功能连接和神经激活模式.
  • 增加的前额-尾FC表明改善了网络协调.
  • 头顶-额头连接性下降可能表明补偿性重组.
  • 在治疗期间,fNIRS对监测阿尔茨海默病的神经元变化具有前景.