相关实验视频
Updated: Jul 11, 2025

10:16
Assessing Stem Cell DNA Integrity for Cardiac Cell Therapy
Published on: January 25, 2019
7.8K
心肌DNA损伤预测心力衰竭在各种潜在疾病的结果
Zhehao Dai1, Toshiyuki Ko2, Kanna Fujita3
1Department of Cardiovascular Medicine, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. Electronic address: https://twitter.com/ZhehaoDai_Cards.
JACC. Heart failure
|November 6, 2023
概括
心脏肌肉中的DNA损伤预测心力衰竭治疗的成功和患者的结果. 较高水平的DNA损伤标志物 (PAR和γ-H2A.X) 表明对治疗的反应较差,并增加不良事件的风险.
科学领域:
- 心脏病学 心脏病学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 心力衰竭 (HF) 缺乏可靠的治疗疗效预测指标.
- DNA 损伤是导致心力衰竭发展的潜在因素.
研究的目的:
- 调查心肌细胞DNA损伤与心力衰竭治疗反应之间的关联.
- 评估心力衰竭患者的DNA损伤标记的预后价值.
主要方法:
- 在175名心力衰竭患者的肌肉组织活检中,针对DNA损伤标记物 (PAR和γ-H2A.X) 进行免疫制,心力衰竭患者减少排泄率 (HFrEF).
- 对DNA损伤标记物的量化 (%PAR和%γ-H2A.X) 和与临床结果的相关性.
- 分析左心室逆转型改造 (LVRR) 和心血管不良事件的复合.
主要成果:
- 患有较高%PAR和%γ-H2A.X的患者在治疗优化后显示LVRR显著较差.
- 这两种标志物都表现出强大的LVRR预测性能 (AUC > 0.85).
- 增加的DNA损伤与增加的长期不良临床事件和死亡率相关.
结论:
- 心肌细胞DNA损伤是心力衰竭后果的关键决定因素.
- 评估心力衰竭患者的DNA损伤有助于预测不同病因的治疗疗效和预后.
相关概念视频
Myocarditis I: Introduction
9
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
9
Heart Failure I: Introduction
14
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...
14
Cardiomyopathy III: Hypertrophic Cardiomyopathy
15
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...
15
Cardiomyopathy II: Dilated Cardiomyopathy
11
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
11
Coronary Artery Disease I: Introduction
17
Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
17
Pathophysiology of Heart Failure
1.6K
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...
1.6K

