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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

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...
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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

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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

Peisheng Xu1

  • 1University of South Carolina, Columbia, SC, 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。

一个针对大脑的新型系统,BTN-PDL1,通过准PD-L1.1,有效地减少神经炎症,并在阿尔茨海默病 (AD) 模型中清除粉样质斑块. 这种方法对治疗阿尔茨海默氏症和其他神经退行性疾病充满希望.

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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.
  • 免疫学 免疫学 免疫学
  • 生物技术是生物技术.

背景情况:

  • 编程死亡配体1 (PD-L1) 失调有助于神经炎症和阿尔茨海默病 (AD) 中的粉样β (Aβ) 清除受损.
  • 在AD大脑中升级的PD-L1阻碍了微质功能,加剧了疾病病理.

研究的目的:

  • 开发一种针对大脑的系统,用于调节中枢神经系统 (CNS) 中的PD-L1.
  • 在AD小鼠模型中研究该系统的治疗潜力.

主要方法:

  • 开发一个针对大脑的Nano-ERASER系统 (BTN-PDL1),以准PD-L1.1.
  • 评估BTN-PDL1通过血脑屏障 (BBB) 的能力.
  • 通过Trim21介导的微质细胞和星球细胞中的蛋白质体降解来评估PD-L1枯竭.

主要成果:

  • BTN-PDL1成功地穿越了BBB,并耗尽了PD-L1,恢复了微质细胞和天体细胞的功能.
  • 用BTN-PDL1治疗导致毒性Aβ纤维素的清除,并减少神经炎症.
  • 动物行为测试表明,BTN-PDL1阻止了AD的进展,并在5XFAD小鼠中改善了认知功能.

结论:

  • BTN-PDL1系统通过调节PD-L1为AD治疗提供了一种新的策略.
  • 这种方法有可能用于治疗由蛋白质功能障碍和神经炎症特征的各种中枢神经系统疾病,包括帕金森病,亨廷顿病,ALS,中风和TBI.