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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
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Overview
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Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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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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Intellectual Disability01:29

Intellectual Disability

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Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
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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.
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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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Updated: Sep 10, 2025

A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
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CRELD1 関連神経発達障害 関連性のない家族から 3人の新生児

Jessica Archer1, Shuxiang Goh2, Christina Miteff3

  • 1Hunter Genetics, Waratah, NSW 2298, Australia.

Genes
|August 28, 2025
PubMed
まとめ

CRELD1遺伝子のバイアレル変異は,特定の神経発達障害と関連しています. この研究は,CRELD1に関連した神経発達障害の既知の臨床的および遺伝的スペクトルを拡張します.

キーワード:
CRELD1 についてエピレプシス脳症世界的な発達遅延低血圧症マイクロケファリー

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科学分野:

  • 遺伝学
  • 神経発達生物学
  • 分子医学

背景:

  • CRELD1は細胞粘着分子をコードする.
  • 初めは心房間隔膜障害 (AVSD) と関連していた.
  • 最近,症候群性および非症候群性神経発達障害 (NDD) と関連付けられています.

研究 の 目的:

  • 複合性ヘテロジゴスCRELD1変異体を持つ個体について記述する.
  • 共通と異なった臨床的特徴を定義する.
  • CRELD1に関連したNDDの表型および遺伝的スペクトルを拡大する.

主な方法:

  • CRELD1の変異を特定するためのエクソームシーケンシング
  • 臨床的および遺伝的データのレビュー
  • ゲノタイプとフェノタイプの相関分析

主要な成果:

  • 複合性ヘテロジゴスCRELD1変異を持つ3人の無関係患者が特定されました.
  • すべての患者は発達の遅延,知的障害,発作,低血圧,変形症状を示した.
  • 研究対象の患者には心臓や免疫学的異常は認められませんでした.

結論:

  • バイアレルのCRELD1変異は,独特のオートソーム性後退性神経発達障害を引き起こす.
  • 発見はCRELD1のゲノタイプ-フェノタイプ相関性を強化する.
  • この研究は この新興症候群の 臨床的・遺伝的スペクトルを 広げています