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β1-Adrenoreceptor Autoantibodies in Heart Failure: Physiology and Therapeutic Implications.
Circulation: Heart Failure ( IF 9.7 ) Pub Date : 2020-01-20 , DOI: 10.1161/circheartfailure.119.006155
Hans-Dirk Düngen 1 , Aleksandar Dordevic 1 , Stephan B Felix 2, 3 , Burkert Pieske 4, 5 , Adriaan A Voors 6 , John J V McMurray 7 , Javed Butler 8
Affiliation  

Antibodies that activate the β1-AR (β1-adrenoreceptor) can induce heart failure in animal models. These antibodies are often found in patients with heart failure secondary to varying etiologies. Their binding to the β1 receptor leads to prolonged receptor activation with subsequent induction of cellular dysfunction, apoptosis, and arrhythmias. β-blocker therapy while highly effective for heart failure, may not be sufficient treatment for patients who have β1 receptor autoantibodies. Removal of these autoantibodies by immunoadsorption has been shown to improve heart failure in small studies. However, immunoadsorption is costly, time consuming, and carries potential risks. An alternative to immunoadsorption is neutralization of autoantibodies through the intravenous application of small soluble molecules, such as peptides or aptamers, which specifically target and neutralize β1-AR autoantibodies. Peptides may induce immunogenicity. Animal as well as early phase human studies with aptamers have not shown safety concerns to date and have demonstrated effectiveness in reducing autoantibody levels. Novel aptamers have the potential advantage of having a wide spectrum of action, neutralizing a variety of known circulating G-protein coupled receptor autoantibodies. These aptamers, therefore, have the potential to be novel therapeutic option for patients with heart failure who have positive for β1-AR autoantibodies. However, clinical outcomes trials are needed to assess the clinical utility of this novel approach to treat heart failure.

中文翻译:

心力衰竭中的β1-肾上腺素受体自身抗体:生理学和治疗意义。

激活β1-AR(β1-肾上腺素受体)的抗体可以在动物模型中诱发心力衰竭。这些抗体通常在病因不同的心力衰竭患者中发现。它们与β1受体的结合导致受体激活时间延长,随后诱导细胞功能障碍,凋亡和心律不齐。尽管β受体阻滞剂对心力衰竭非常有效,但对于具有β1受体自身抗体的患者可能不足以治疗。在小型研究中,通过免疫吸附去除这些自身抗体可改善心力衰竭。然而,免疫吸附是昂贵的,费时的并且具有潜在的风险。免疫吸附的替代方法是通过静脉内应用小分子可溶性蛋白质(例如肽或适体)来中和自身抗体,专门针对和中和β1-AR自身抗体。肽可诱导免疫原性。迄今为止,动物和早期人类对适体的研究尚未显示出对安全性的关注,并已显示出降低自身抗体水平的有效性。新型适体具有潜在的优势,具有广泛的作用,可以中和多种已知的循环G蛋白偶联受体自身抗体。因此,这些适体对于β1-AR自身抗体阳性的心力衰竭患者可能具有新颖的治疗选择。但是,需要临床结果试验来评估这种新颖方法治疗心力衰竭的临床效用。迄今为止,动物和早期人类对适体的研究尚未显示出对安全性的关注,并已显示出降低自身抗体水平的有效性。新型适体具有潜在的优势,具有广泛的作用,可以中和多种已知的循环G蛋白偶联受体自身抗体。因此,这些适体对于β1-AR自身抗体阳性的心力衰竭患者可能具有新颖的治疗选择。但是,需要临床结果试验来评估这种新颖方法治疗心力衰竭的临床效用。迄今为止,动物和早期人类对适体的研究尚未显示出对安全性的关注,并已显示出降低自身抗体水平的有效性。新型适体具有潜在的优势,具有广泛的作用,可以中和多种已知的循环G蛋白偶联受体自身抗体。因此,这些适体对于β1-AR自身抗体阳性的心力衰竭患者可能具有新颖的治疗选择。但是,需要临床结果试验来评估这种新颖方法治疗心力衰竭的临床效用。中和多种已知的循环G蛋白偶联受体自身抗体。因此,这些适体对于β1-AR自身抗体阳性的心力衰竭患者可能具有新颖的治疗选择。但是,需要临床结果试验来评估这种新颖方法治疗心力衰竭的临床效用。中和多种已知的循环G蛋白偶联受体自身抗体。因此,这些适体对于β1-AR自身抗体阳性的心力衰竭患者可能具有新颖的治疗选择。但是,需要临床结果试验来评估这种新颖方法治疗心力衰竭的临床效用。
更新日期:2020-01-21
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