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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

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

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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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相关实验视频

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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

Jasmine Phenix1, Sarah Anna Lisa Zünd2, Dongwei Yu1

  • 1McGill University, Montreal, QC, Canada.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
概括

研究人员对FDA批准的药物进行了选,以寻找阿尔茨海默病 (AD) 的治疗方法. 他们确定了三种化合物,可以减少特定星球细胞中的脂质滴 (LDs),为AD提供潜在的新治疗策略.

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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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科学领域:

  • 神经科学是一个神经科学.
  • 细胞生物学 细胞生物学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 与ApoE ε3天体细胞相比,表达阿波利波蛋白E (ApoE) ε4的天体细胞显示脂肪滴 (LD) 积累增加.
  • 脂质滴 (LDs) 涉及到阿尔茨海默氏症 (AD) 的病变发生.

研究的目的:

  • 为了研究药理学剂对ApoE ε3和ApoE ε4星体中的LDs的影响.
  • 确定降低ApoE ε4星球细胞中LDs的药物,潜在地揭示LD形成的机制,并为AD治疗提供信息.

主要方法:

  • 对2321种FDA批准的药物进行了高通量选.
  • 使用BODIPY染色检测出脂质滴,并通过PLIN2联合染色进行验证.
  • 显示有效性的化合物进一步得到了验证,并对治疗的星球细胞进行了转录组分析.

主要成果:

  • 两个 ApoE ε3 和 ApoE ε4 星形细胞形成 LDs.
  • 三种化合物 - - 环化物,VX745和伊普拉格利弗洛辛 - - 被确定为特别降低ApoE ε4星体中的LDs.
  • 在转录组分析时,西克莱索尼德证明了剂量依赖的LD减少,并诱导了细胞外矩阵组织的显著变化.

结论:

  • 这项研究增强了对LD形成的理解,以及星球细胞中异型特异性的差异.
  • 已识别的化合物和机制可能为AD提供新的治疗策略.
  • 这些发现有助于理解AD的发病因子,突出了星球细胞LDs的作用.