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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

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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

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

Hedi Zhou1, Adeola Shobo1, Mark Hancock1

  • 1McGill University, Montreal, QC, Canada.

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PubMed
概括
此摘要是机器生成的。

一种新型的,D-氨基酸Aβ交互 (D-AIP),有效地向早期阿尔茨海默氏症中有毒的粉样β oligomers.

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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.
  • 药理学 药理学是指药理学的学科.
  • 生物化学 生物化学

背景情况:

  • 阿尔茨海默病 (AD) 病原发生主要是由粉样β (Aβ) 积累驱动的.
  • 一种抗蛋白酶的D-氨基酸Aβ相互作用 (D-AIP) 已被评估为一种新的抗粉样蛋白预防策略.
  • D-AIP选择性地结合Aβ42寡合体,中和它们的毒性,并穿过血脑屏障.

研究的目的:

  • 为了研究D-AIP对3xTg-AD小鼠早期Aβ病变的作用.
  • 评估口服D-AIP的安全性和有效性.
  • 评估D-AIP对粉样蛋白沉积和神经炎症的影响.

主要方法:

  • 在4至6个月大小的3xTg-AD小鼠口服D-AIP.
  • 使用液态染色体质谱法对大脑和血中的D-AIP进行量化.
  • 通过MALDI-MSI定位D-AIP和Aβ42寡合体.
  • 针对粉样蛋白病理学,微质细胞和天体细胞反应性的免疫组织化学.
  • 中等尺度发现免疫试验用于Aβ物种量化.

主要成果:

  • 口服的D-AIP显示出有利的生物稳定性,药理动力学和大脑分布.
  • 在3xTg-AD小鼠的大脑中,D-AIP与有毒的Aβ寡合体形成复合体.
  • 在早期的粉样蛋白聚合过程中,D-AIP减弱的斑块粉样蛋白病理和神经炎症.
  • 行为和结构分析显示,D-AIP对记忆和认知没有不良影响.

结论:

  • 在临床前模型中,口服的D-AIP有效向Aβ寡合体,防止AD相关的沉积和神经毒性.
  • 由于其有效性和缺乏可观察到的不良影响,D-AIP显示出作为下一代阿尔茨海默病治疗药物的前景.