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Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Oppositional Defiant Disorder01:30

Oppositional Defiant Disorder

A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
Diagnostic Criteria and...
Sex-linked Disorders01:43

Sex-linked Disorders

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.
Meiosis I01:49

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

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...

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Updated: May 15, 2026

Rectal Organoid Morphology Analysis (ROMA): A Diagnostic Assay in Cystic Fibrosis
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ヌーナン症候群 ヌーナン症候群とは

Amy E Roberts1, Judith E Allanson, Marco Tartaglia

  • 1Department of Cardiology and Division of Genetics, Children's Hospital Boston, Boston, MA 02115, USA. amy.roberts@cardio.chboston.org

Lancet (London, England)
|January 15, 2013
PubMed
まとめ
この要約は機械生成です。

ヌーナン症候群 (Noonan syndrome) は,身体の複数のシステムに影響を及ぼす遺伝疾患で,特徴的な顔の特徴と発達上の問題によって特徴付けられます. RAS-MAPK経路におけるその遺伝的基礎を理解することは,標的治療につながる可能性があります.

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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
11:21

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

Published on: January 15, 2013

関連する実験動画

Last Updated: May 15, 2026

Rectal Organoid Morphology Analysis (ROMA): A Diagnostic Assay in Cystic Fibrosis
07:56

Rectal Organoid Morphology Analysis (ROMA): A Diagnostic Assay in Cystic Fibrosis

Published on: June 10, 2022

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
11:21

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

Published on: January 15, 2013

科学分野:

  • 遺伝学 遺伝学とは
  • 分子生物学は分子生物学である.
  • 小児科は小児科です.

背景:

  • ヌーナン症候群 (Noonan syndrome) は,多系統遺伝疾患である. ヌーナン症候群は,多系統遺伝疾患である. ヌーナン症候群は,多系統遺伝疾患である. ヌーナン症候群は,多系統遺伝疾患である.
  • 特徴的な顔の特徴,発達遅延,身長が短く,先天性心臓病を呈している.
  • ヌーナン症候群の変異は,RAS-MAPK信号伝達経路に影響する.

研究 の 目的:

  • ヌーナン症候群の遺伝的基礎と臨床的症状を要約する.
  • RAS-MAPK経路不調の役割を強調する.
  • 現在の管理戦略と将来の治療方向性を議論する.

主な方法:

  • ノーナン症候群の遺伝学と臨床的特徴に関する既存の文献のレビュー.
  • ゲノタイプ-フェノタイプ相関の分析.
  • 管理ガイドラインと潜在的な薬剤遺伝的治療法についての議論.

主要な成果:

  • ヌーナン症候群は,RAS-MAPK経路に影響する変異によって引き起こされます.
  • 臨床的に関連する遺伝子型-フェノタイプ相関は,リスク評価のために確立されています.
  • 管理ガイドラインが利用可能であり,薬剤遺伝的治療は将来の可能性である.

結論:

  • ヌーナン症候群 (Noonan syndrome) は,複雑な遺伝疾患であり,さまざまな臨床的表象を呈している.
  • RAS-MAPK経路の調節障害を理解することは,ヌーナン症候群の管理の鍵です.
  • 病理生理学に関するさらなる研究は,新しい薬剤遺伝療法の開発を可能にすることができます.