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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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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

Frank Longo1

  • 1Stanford University, Stanford, CA, USA.

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概括
此摘要是机器生成的。

LM11A-31,一个小分子p75神经蛋白受体 (p75NTR) 调节器,在阿尔茨海默氏病模型中减少了突触和质病理. 这种药物对抗粉样蛋白和驱动的退化,显示了治疗神经退行性疾病的前景.

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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.
  • 分子生物学分子生物学

背景情况:

  • 阿尔茨海默病 (AD) 和相关痴呆症 (ADRD) 涉及粉样蛋白,病理和质功能障碍,导致突触失败.
  • p75神经质受体 (p75NTR) 促进退行性信号传递,导致AD/ADRD中的突触损伤.
  • LM11A-31是一种口服可生物利用的小分子,它调节p75NTR,降低退行性信号的调节,并调节高位信号的调节.

研究的目的:

  • 为了研究LM11A-31的影响,一个p75NTR调节器,在神经元和质通路涉及突触退化.
  • 评估在AD/ADRDs的临床前模型中准p75NTR信号的治疗潜力.

主要方法:

  • 在实验室中,LM11A-31应用于暴露于粉样β或寡合物的神经元和质模型.
  • 研究包括基于APP (APP-Lon/Swe) 和基于tau (PS19) 的小鼠模型.
  • 评估结果包括信号通路,线粒体功能,RNA测序,形态,突触功能,行为和生物标志物.

主要成果:

  • LM11A-31抵消了粉样蛋白,蛋白和质介导的退行信号.
  • 观察到突触退化,病理性积,质异常和行为缺陷的减少.
  • 规范化了与阿尔茨海默病相关的转录基因特征,并减少了大脑p-tau217的积累.

结论:

  • 调节p75NTR信号有效地减少了AD/ADRD模型中的突触和质病理.
  • 转录组数据表明,小鼠发现和人类AD机制之间存在重叠.
  • 临床前结果与LM11A-31在轻度至中度AD患者的2a期临床试验的临床发现一致.