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首页> 外文期刊>Progress in Cardiovascular Diseases >Developing the next generation of cardiac markers: disease-induced modifications of troponin I.
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Developing the next generation of cardiac markers: disease-induced modifications of troponin I.

机译:开发下一代心脏标志物:疾病引起的肌钙蛋白I修饰。

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摘要

Troponin I (TnI) and Troponin T (TnT) have evolved into arguably the two most important diagnostic markers for acute myocardial injury. Part of their diagnostic utility lies in the uniquely important roles that both TnI and TnT play in the calcium-dependent regulation of cardiac muscle contraction. Both proteins undergo extensive physiologic regulation, principally through phosphorylation, as well as specific disease-induced pathologic modifications, including phosphorylation, oxidation, and proteolysis. Many, if not all, of these protein modifications in some way modulate contractility, and when detected in serum may therefore provide important information about both the disease state and functional status of the heart. However, the complexity of the TnI (and TnT) forms in the serum is large, which leads to difficulty in detecting all of the Tn subunits in serum, and hence interpreting the biologic significance of each modified product. But, as diagnostic tools and modalities improve, our ability to monitor and detect specific disease-induced modified forms of proteins will inevitably lead to better and more specific diagnoses and therapies.
机译:肌钙蛋白I(TnI)和肌钙蛋白T(TnT)可以说已经发展成为急性心肌损伤的两个最重要的诊断标记。其诊断作用的一部分在于TnI和TnT在钙离子依赖性心肌收缩调节中所起的独特重要作用。两种蛋白质都主要通过磷酸化以及特定的疾病诱导的病理修饰(包括磷酸化,氧化和蛋白水解)经历广泛的生理调节。这些蛋白质修饰中的许多(如果不是全部)以某种方式调节了收缩力,因此在血清中检测到这些蛋白质时,可能会提供有关心脏疾病状态和功能状态的重要信息。但是,血清中TnI(和TnT)形式的复杂性很大,导致难以检测血清中所有Tn亚基,因此难以解释每种修饰产物的生物学意义。但是,随着诊断工具和方法的改进,我们监测和检测特定疾病引起的蛋白质修饰形式的能力将不可避免地导致更好和更具体的诊断和治疗。

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