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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...
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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

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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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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

Jinhak Kim1, Junho Kim1, Euimo Yang1

  • 1Yonsei University College of Medicine, Seoul, Korea, Republic of (South).

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

这项研究使用了小鼠的斯科波胺诱导痴呆模型来测试donepezilzil.

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

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科学领域:

  • 神经科学是一个神经科学.
  • 药理学 药理学是指药理学的学科.
  • 疾病的动物模型.

背景情况:

  • 痴呆症呈现出复杂,异质的病理,挑战了翻译研究.
  • 在动物模型中,对认知领域 (记忆,注意力,执行功能) 的准确评估是困难的.
  • 多领域认知评估对于理解各种与痴呆有关的障碍至关重要.

研究的目的:

  • 评估一种斯科波胺诱导的小鼠模型对与痴呆相关的认知障碍.
  • 评估多尼佩西尔在逆转这些诱导认知缺陷方面的疗效.
  • 在多任务电池中研究治疗的特定领域和剂量依赖的影响.

主要方法:

  • 雄性C57BL/6小鼠接受了斯科波胺来诱导认知缺陷,随后接受了多尼佩西尔治疗.
  • 用触摸屏操作系统评估认知功能.
  • 任务包括视觉歧视 (VD),5个选择串行反应时间任务 (5-CSRTT),固定/渐进比 (FR/PR) 和配对关联学习 (PAL).

主要成果:

  • 斯科波胺降低了VD和PAL任务的表现;多尼佩西尔扭转了VD缺陷.
  • 多尼佩西尔 (3毫克/千克) 逆转了5-CSRTT中斯科波胺诱导的缺陷,显示了剂量依赖的效果.
  • 斯科波胺改变了FR/PR中的动机,这种效应没有被donepezil逆转,表明模型的局限性.

结论:

  • 斯科波胺模型显示了特定领域的缺陷和可变的治疗反应.
  • 需要优化任务和剂量,以提高痴呆症研究的模型可靠性.
  • 一个全面的多领域电池可以作为治疗评估的强大的临床前平台.