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相关概念视频

Structure-Activity Relationships and Drug Design01:28

Structure-Activity Relationships and Drug Design

1.8K
Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...
1.8K
Causality in Epidemiology01:21

Causality in Epidemiology

1.6K
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
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Local Anesthetics: Chemistry and Structure-Activity Relationship01:30

Local Anesthetics: Chemistry and Structure-Activity Relationship

6.7K
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
6.7K
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs01:20

Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs

248
Body:Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to...
248
Cholinergic Antagonists: Chemistry and Structure-Activity Relationship01:29

Cholinergic Antagonists: Chemistry and Structure-Activity Relationship

2.8K
Cholinergic antagonists bind to cholinergic receptors and limit the effects of acetylcholine and other cholinergic agonists. Based on the specific cholinergic receptor affinity, these antagonists are classified as muscarinic or nicotinic. Anticholinergics interrupt parasympathetic innervations while sympathetic innervations remain uninterrupted. Muscarinic antagonists are also called 'muscarinic antagonists', 'antimuscarinics', or 'parasympatholytics'. Nicotinic...
2.8K
Adrenergic Agonists: Chemistry and Structure-Activity Relationship01:16

Adrenergic Agonists: Chemistry and Structure-Activity Relationship

3.9K
Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
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相关实验视频

Updated: Feb 3, 2026

Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos
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Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos

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多动症,自闭症和大脑结构之间的因果关系:一个门德尔的随机化研究.

Yilu Zhao1, Yamin Zhang1, Tao Li1

  • 1Affiliated Mental Health Center and Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Nanhu Brain-computer Interface Institute, Hangzhou, Zhejiang, China; MOE Frontier Science Center for Brain Science and Brain-machine Integration, Zhejiang University, Hangzhou, Zhejiang, China; State Key Laboratory of Brain-machine Intelligence, Zhejiang University, Hangzhou, Zhejiang, China.

Progress in neuro-psychopharmacology & biological psychiatry
|February 1, 2026
PubMed
概括

这项研究揭示了与注意力缺陷多动症障碍 (ADHD) 和自闭症谱系障碍 (ASD) 相关的特定大脑结构差异. 这些发现突出了额叶.

关键词:
更多关于 ADHD ADHD 的文章在ASD中,使用的是ASD.大脑结构 大脑结构门德尔的随机化

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Transcranial Magnetic Stimulation for Investigating Causal Brain-behavioral Relationships and their Time Course
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Using Brain Activation nir-HEG/Q-EEG and Execution Measures CPTs in a ADHD Assessment Protocol
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相关实验视频

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Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos
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Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos

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Transcranial Magnetic Stimulation for Investigating Causal Brain-behavioral Relationships and their Time Course
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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.
  • 精神病学是一个精神病学.

背景情况:

  • 像ADHD和ASD这样的神经发育障碍 (NDD) 对全球健康构成重大挑战.
  • 在NDD中观察到大脑结构的改变,但因果关系尚不清楚.
  • 了解大脑结构变异的遗传基础对于NDD研究至关重要.

研究的目的:

  • 研究大脑结构 (灰质和白质) 与ADHD和ASD风险之间的因果关系.
  • 为了确定特定的大脑区域和白质道涉及这些NDD的病理生理学.
  • 探索大脑功能在大脑结构和NDD之间的关系中的潜在调解作用.

主要方法:

  • 使用两个样本的门德尔随机化 (MR) 分析.
  • 采用了最新的全基因组关联研究 (GWAS) 对大脑结构和NDD的发现.
  • 进行了结合功能性MRI (fMRI) GWAS数据的调解分析.

主要成果:

  • 上额回形 (SFG) 的表面积增加与较高的ADHD风险有因果关系.
  • 轨道前环 (OFG) 的较大表面积与ASD风险降低有关.
  • 特定的白质通道,包括下面的前后带 (IFO) 和内部囊的后镜片部分 (RLIC),分别显示与ADHD和ASD的因果关联.
  • 没有发现反向因果关系的证据 (NDD引起大脑变化).
  • 大脑功能活动调解了结构性大脑变化与NDD风险之间的联系.

结论:

  • 额叶在ADHD和ASD的神经生物学中起着至关重要的作用.
  • 特定的白质路径在这些NDD的发展中具有因果关系.
  • 这些发现为遗传学,大脑结构,功能和NDDs的复杂相互作用提供了新的见解.