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相关概念视频

Preclinical Development: Overview01:28

Preclinical Development: Overview

5.7K
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

Clinical Trials: Overview

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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

Drug Discovery: Overview

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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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Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

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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.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
1.1K
In Vitro Drug Release Testing: Overview, Development and Validation01:10

In Vitro Drug Release Testing: Overview, Development and Validation

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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...
279
Drug Regulation01:25

Drug Regulation

2.7K
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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相关实验视频

Updated: Jan 7, 2026

Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
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药物开发 药物开发

Jinglin Zhong1, David Li2, Paul Delmar3

  • 1Alector, South San Francisco, CA, USA.

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

新的阿尔茨海默病试验分析模型利用多次基线后访问来提高统计效率. 这些先进的方法可以将所需的样本大小减少20%以上,加速治疗的发展.

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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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Developmental Toxicity Assay Based on Real-Time Monitoring of Fibroblast Growth Factor Signal Disruption in Human Induced Pluripotent Stem Cells
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相关实验视频

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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:

  • 生物统计学 生物统计学
  • 临床试验设计 临床试验设计
  • 神经退行性疾病 神经退行性疾病

背景情况:

  • 阿尔茨海默病的临床试验显示,治疗效果在访问和终点之间是比例和一致的.
  • 传统的重复测量混合模型 (MMRM) 仅使用最后一次访问是统计效率低下的.
  • 重新考虑MMRM是必要的,以更好地利用从基线后访问的纵向数据.

研究的目的:

  • 提出和评估阿尔茨海默病试验的替代统计模型.
  • 通过利用多次基线后访问来提高统计效率.
  • 减少临床试验的样本大小要求.

主要方法:

  • 来自阿尔茨海默氏症试验的模拟半真实试验数据 (例如,Clarity-AD,TRAILBLAZER-ALZ 2).
  • 插图模型包括MMRM-多次访问,比例MMRM,立方线MMRM和比例立方线MMRM.
  • 使用多个终点探索全球测试统计.

主要成果:

  • 在多次访问中估计治疗效果可以将样本大小减少20%或更多.
  • 多次访问的MMRM是MMRM最后一次访问的自然延伸,可用作主要分析方法.
  • 评估了替代模型的优点和局限性.

结论:

  • 在阿尔茨海默氏症中,改变疾病的治疗方法往往会表现出早期和持续的效果.
  • 使用多次访问的模型可以显著减少样本大小,加速药物开发.
  • 建议在未来的试验中采用多次访问模型作为初级分析,使用MMRM-Last-Visit来确定灵敏度.