在心力衰竭中引发铁灭菌的铁灭菌信号的特征
Xukun Bi1, Xiaotian Wu2,3, Jiaqi Chen1
1Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Signal transduction and targeted therapy
|September 26, 2024
概括
乙-A合成酶4 (ACSL4) 通过铁和热导致心力衰竭. 抑制ACSL4保护心脏免受压力过载,为心力衰竭提供潜在的治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 分子心脏病学分子心脏病学
- 细胞死亡途径 细胞死亡途径
背景情况:
- 压力过重会导致心脏缩,这是心力衰竭的前身.
- 氧化脂质有助于心力衰竭中的心肌细胞损伤.
- 在这种情况下,脂质毒性的主要调节器是未知的.
研究的目的:
- 确定压力过载引起的心力衰竭中脂质毒性的关键调节者.
- 调查乙-A合成酶4 (ACSL4) 在心脏功能障碍中的作用.
- 探索针对ACSL4.4的治疗潜力.
主要方法:
- 在横向大动脉收缩 (TAC) 的小鼠模型中进行脂管学分析和RNA测序.
- 在体内和体外研究涉及ACSL4过度表达,抑制和遗传删除.
- 对铁亡,热亡信号和IL-1β生成的分析.
主要成果:
- 在TAC诱导的心力衰竭中,ACSL4和酸乙醇胺 (PE) 的上调.
- 过度表达ACSL4会通过铁灭症加剧心脏功能障碍.
- 抑制或删除ACSL4可以改善心脏功能,并减少TAC后的心脏重塑.
- 抑制ACSL4可以防止高缩刺激引起的心肌细胞生长.
- ACSL4依赖性铁灭菌激活铁灭菌,增加IL-1β的产生,这有助于心脏功能障碍.
结论:
- 在压力过载诱导的心脏重塑过程中,ACSL4通过铁质中介性铁质信号传递至关重要.
- 向ACSL4-ferroptosis-pyroptosis通路为心力衰竭提供了一个有希望的治疗策略.
更多相关视频
04:27Author Spotlight: Advantages of Pressure-Volume Loop Measurement Method in Cardiovascular Research
Published on: January 12, 2024
450
07:13A Rat Model of Pressure Overload Induced Moderate Remodeling and Systolic Dysfunction as Opposed to Overt Systolic Heart Failure
Published on: April 30, 2020
6.4K
相关概念视频
01:17Pathophysiology of Heart Failure
1.5K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.5K
01:16Necrosis
4.4K
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
4.4K
01:29Heart Failure II: Pathophysiology
3
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
3
01:27Heart Failure I: Introduction
2
Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
2
01:30Heart Failure IV: Classification and Diagnostic Evaluation
2
Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
2
01:26Heart Failure III: Clinical Manifestations
3
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
3