ヒト染色体15のポリモルフィックゲノム複製は,パニックや恐怖障害の感受性の要因です
M Gratacòs1, M Nadal, R Martín-Santos
1Centre de Genètica Mèdica i Molecular-IRO, L'Hospitalet de Llobregat, E-08907, Catalonia, Barcelona, Spain.
Cell
|August 18, 2001
まとめ
染色体15の複製 (DUP25) は,不安障害と関節の緩やかさに関連しています. この遺伝的要因は,パニックや恐怖障害に対する感受性を高め,複雑な遺伝パターンを示唆する可能性がある.
科学分野:
- 遺伝学 遺伝学とは
- 精神科医は精神病を患っている.
- 分子生物学は分子生物学である.
背景:
- 不安障害は,健康と社会に重大な影響を及ぼす一般的な精神疾患です.
- パニック・フォビック障害と関節軟弱症の併発は,共通の病因が根底にあることを示している.
- これらの併発性疾患の分子基盤を理解することは,標的を絞った介入の開発に不可欠です.
研究 の 目的:
- 恐慌症と恐怖症の併発と関節の緩やかさの分子遺伝的基礎を調査する.
- これらの併発性疾患に関連する特定の遺伝子変異を特定するために.
主な方法:
- パニック/恐怖症障害と関節の緩やかさがある家族の遺伝分析.
- 染色体異常,特に染色体15q24-26の重複の特定と特徴づけ
- 遺伝子マーカーとフェノタイプの表現の分離分析.
主要な成果:
- ヒト染色体15q24-26 (DUP25) の間位複製が特定され,家族的な症例ではパニック/アゴラフォビア/社会恐怖症および関節の緩やかさと有意に関連していました.
- また,DUP25は,非家族的な症例におけるパニック障害と関連していました.
- モザイキズムとメンデルの分離の欠如の証拠は,DUP25がフェノタイプに寄与するための非メンデルの遺伝メカニズムを示唆しています.
結論:
- 染色体15q24-26で特定されたDUP25は,パニック/恐怖症障害と関節の緩やかさを含む臨床フェノタイプに対する感受性因子として提案されています.
- DUP25の7%の罹患率は,直接的な原因ではなく,リスク因子として作用することを示しています.
- 非メンデルの遺伝パターンは,これらの複雑な精神的および身体的併発症の遺伝的基礎に関与しています.
さらに関連する動画
09:16Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
関連する概念動画
Polytene Chromosomes
Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...
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...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Gene Duplication and Divergence
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
Generalized Anxiety Disorder
Generalized Anxiety Disorder (GAD) is a chronic condition characterized by excessive and uncontrollable worry that persists for at least six months, significantly interfering with daily functioning. Unlike situational anxiety, which arises in response to specific stressors, GAD often occurs without a clear cause. Individuals may experience disproportionate worry about work, health, or relationships. For instance, a person might continuously fear poor health despite normal medical evaluations or...
Panic Disorder
Panic disorder is an anxiety disorder characterized by recurrent and sudden minutes-long episodes of intense fear, known as panic attacks. These attacks may feel like heart attacks and often happen without warning or a specific cause. They can include symptoms such as rapid heart rate, shortness of breath, chest pain, trembling, sweating, dizziness, and a sense of helplessness. During a panic attack, individuals may feel as though they are experiencing a heart attack or are in a...
