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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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药物开发 药物开发

Marta Turri1,2, Myriam Aubin3,4, Laura K Hamilton5

  • 1Université de Sherbrooke, Sherbrooke, QC, Canada.

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

阿尔茨海默病 (AD) 涉及到大脑脂质的变化. 一种醇-CoA脱酶 (SCD) 抑制剂在积极的5xFAD AD小鼠模型中改善了脂肪酸变化和突触密度,这表明了潜在的治疗策略.

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科学领域:

  • 神经科学是一个神经科学.
  • 生物化学 生物化学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 阿尔茨海默病 (AD) 的特点是大脑脂质的改变,但针对脂质代谢的有效疗法仍然很少.
  • 之前的研究表明,在一个进展缓慢的AD小鼠模型中,抑制stearoyl-CoA脱酶 (SCD) 改善了突触功能.
  • 这项研究研究了快速进展的5xFADADAD小鼠模型中的脂质代谢和SCD抑制剂 (SCDi) 的作用.

研究的目的:

  • 在5xFAD AD小鼠模型中检查脂质代谢中断.
  • 评估SCD抑制剂对5xFAD小鼠脂肪酸变化和突触损失的治疗潜力.

主要方法:

  • 使用气色谱-火焰离子检测 (GC-FID) 在5xFAD和对照小鼠的海马中进行脂肪酸 (FA) 分析.
  • 针对粉样斑块和质标记物的免疫组织化学 (IHC) (GFAP,Iba-1).
  • 脑内输注SCDi或载体,然后进行GC-FID和Golgi染色以定量树突脊柱.

主要成果:

  • 在5xFAD小鼠中观察到显著的FA变化,基于性别和年龄的差异.
  • 在5xFAD小鼠中,C16:1/C16:0脱度指数,表明SCD活性,增加了.
  • 在雌性5xFAD小鼠中,SCDi治疗使FA水平正常化并改善树突脊柱密度.

结论:

  • 在积极的5xFADADADAD模型中,SCD抑制对FA变化和海马体树突棘有有益影响.
  • 这些发现强化了SCD抑制作为阿尔茨海默病新治疗点的潜力.