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Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.7K
Imprinting01:22

Imprinting

9.8K
Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting.
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Learning Disabilities01:25

Learning Disabilities

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Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
219
Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
133
Dissociative Identity Disorder01:30

Dissociative Identity Disorder

155
Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...
155
Autism Spectrum Disorder01:19

Autism Spectrum Disorder

162
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
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相关实验视频

Updated: Jul 25, 2025

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
06:35

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm

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打印障碍 打印障碍 打印障碍 打印障碍

Thomas Eggermann1, David Monk2, Guiomar Perez de Nanclares3

  • 1Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany. teggermann@ukaachen.de.

Nature reviews. Disease primers
|June 29, 2023
PubMed
概括
此摘要是机器生成的。

印记障碍 (ImpDis) 是一种罕见的先天性疾病,影响基因组印记,导致诊断和治疗方面的挑战. 研究正在推动对它们的机制的理解,并为像普拉德-威利综合征和安吉尔曼综合征这样的疾病开发个性化疗法.

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Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders
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The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders
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相关实验视频

Last Updated: Jul 25, 2025

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
06:35

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Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders
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The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders
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科学领域:

  • 遗传学 是一个遗传学.
  • 发展生物学 发展生物学
  • 儿科 儿科 儿科

背景情况:

  • 印记障碍 (ImpDis) 是由于基因组印记的中断而产生的先天性疾病.
  • 常见的例子包括普拉德-威利综合征,安吉尔曼综合征和贝克威特-维德曼综合征,经常呈现非特异性症状,如生长障碍和发育迟缓.
  • 由于临床特征的异质性和重叠,诊断具有挑战性.

研究的目的:

  • 探索印记障碍 (ImpDis) 和印记缺陷 (ImpDefs) 背后的机制.
  • 为了确定差异甲基化区域 (DMR) 中缺陷对印记基因表达的影响.
  • 提供对ImpDis病理生理学和潜在治疗策略的见解.

主要方法:

  • 对影响差异甲基化区域 (DMR) 的基因组和印记缺陷 (ImpDefs) 的分析.
  • 单基因基因表达和原产地特定基因表达的研究.
  • 识别印制基因和通路之间的功能交叉对话.

主要成果:

  • 影响DMR的四种类型的基因组和印记缺陷 (ImpDefs) 被确定为ImpDis的原因.
  • 这些缺陷破坏了印制基因的正常父特异性表达.
  • 印记基因和通路之间的功能交叉交谈为ImpDis病理生理学提供了洞察力.

结论:

  • 了解ImpDis需要一种多学科的方法,整合遗传,发育和临床观点.
  • 目前对ImpDis的治疗方法是症状性,正在开发有针对性和个性化疗法.
  • 对DMR调控和基因相互作用的进一步研究对于改善诊断和治疗结果至关重要.