まとめ
Mus musculus heartsの冠動脈のサイズ不対称性は,同種の株によって異なります. この特徴は,遺伝的および非遺伝的要因の両方の影響を受け,右非対称性の優位性を示しています.
科学分野:
- 心血管の解剖学について
- 発達生物学 発達生物学とは
- マウスの遺伝学
背景:
- 心臓の腸間隔膜は,冠動脈のペアから血液供給を受けます.
- これらの動脈は,しばしば不均等な大きさであり,左または右非対称性につながる.
- この解剖学的変異は,Mus musculusで観察できる.
研究 の 目的:
- Mus musculusの冠動脈非対称性に対する遺伝的および環境的影響を調査する.
- 右対左非対称性の遺伝パターンを決定する.
主な方法:
- Mus musculus (C57BL/10,DBA/1,およびBALB/c) の3種の同種の株における冠動脈の大きさの比較分析.
- 非遺伝的要因の役割を推論するために,株内の多様性の評価.
- 左と右の非対称性フェノタイプ間の優位性関係の決定.
主要な成果:
- 冠動脈アシンメトリーにおける有意な差異は,3つの近親種の株間で観察されました.
- 株内変動は,非遺伝的要因が非対称性の発達に寄与することを示した.
- 右動脈非対称性は,左動脈非対称性よりも優位であることが判明しました.
結論:
- Mus musculusにおける冠動脈非対称性は,遺伝的背景と環境要因の両方に影響される複雑な特徴です.
- 観察された株の違いと支配的パターンは,さらなる遺伝子研究のための基礎を提供します.
- これらの発達メカニズムの理解は,心血管の変異についての洞察を提供することができます.
関連する概念動画
Anatomy of the Heart
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Chambers of the Heart
The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
Deoxygenated blood from the body is received in the right...
Anatomy of the Heart
The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
Mitral Valve Prolapse I: Introduction
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...


