生命 の 息: 心臓 疾患 と 発達 的 低酸素 の 関係
1Department of Physiology, Development, and Neuroscience; The Barcroft Centre; Cambridge Cardiovascular British Heart Foundation Centre for Research Excellence; and Cambridge Strategic Research Initiative in Reproduction, University of Cambridge, UK.
Circulation
|October 25, 2021
まとめ
妊娠中の胎児の慢性低酸素は子孫を増やす
科学分野:
- 心血管科学と健康と病気の発達起源 (DOHaD)
背景:
- 心臓病は死亡の主な原因で 産前の影響が認識されつつあります
- 胎児の慢性低酸素症のような 妊娠中の不良症状は 将来の子孫における 心血管疾患のリスクと関連しています
- これらの発達の起源を理解することは 予防戦略にとって極めて重要です
研究 の 目的:
- 胎児の心臓血管発達に対する慢性的な胎児低酸素の影響を検討する.
- 産前低酸素と成人の心血管疾患の 関連性を調べる
- 低酸素症による妊娠の潜在的な治療策について議論する.
主な方法:
- 胎児の低酸素を検査するヒトの研究と動物モデル (ネズミ,鳥,羊) のレビュー
- 酸化ストレスとミトコンドリア機能を含む分子経路に焦点を当てます
- 心血管疾患の発達の起源に関する証拠の統合
主要な成果:
- 慢性的な胎児低酸素は 短期的にも長期的にも 胎児の心血管系に影響します
- 産前低酸素は酸化ストレスの増加と関連しています.
- この分子結合は,成人の子孫において心血管疾患のリスクを高めます.
結論:
- 胎児の慢性低酸素症は 後に発症する心臓病の重要な危険因子です
- ミトコンドリアを標的とした抗酸化療法が 臨床介入の有望性を示しています
- 妊娠中の予防策は,将来の心血管疾患のリスクを軽減することができます.
関連する概念動画
Hypoxia
1.4K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
1.4K
Regulation of Angiogenesis and Blood Supply
2.9K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.9K
Acute Respiratory Failure-II
434
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
434
Pulmonary Hypertension: Classification and Pathogenesis
323
Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
There are various classifications for PH, each relating to different underlying causes and also...
323
Ischemic Heart Disease: Overview
2.0K
Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and...
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and...
2.0K
Development of Blood Vessels
910
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
910


