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AJH:血浆非转铁蛋白结合铁对全身铁超载和静脉补铁的影响

2021-10-14 MedSci原创 MedSci原创

迄今为止,labile-NTBI检测的临床主要贡献是设计治疗方案,旨在减少组织暴露于血浆NTBI成分(如LPI),从而提供广泛的保护,免受即将到来的IO的影响

铁超载(IO)是一种由铁积累超过生理需求引起的病理条件,最终导致重要功能的氧化损伤。非转铁蛋白结合铁(Non-transferrin bound iron, NTBI)已被经典地用于表示在全身铁超载中检测到的潜在有毒血浆成分,并与终末器官铁积累和生物损伤有关。由于术语NTBI本身并不排除可以在血浆中检测到的无毒的铁形式,它在没有额外药理特性的情况下自由使用可能会产生误导。根据历史和常用的NTBI术语,国外一专家团队建议使用“不稳定/非不稳定”的血浆NTBI来表明相关铁种类的毒性潜力对其进行阐述。

在血浆中检测到的“总”NTBI提供了一种IO的测量方法,而通过LPI检测已经检测到了潜在的毒性或不稳定组分。重要的是,组织IO可以通过控制血浆中的不稳定-NTBI水平来降低的观点,促进了临床螯合剂方案的发展,可在最大限度地减少日常组织暴露于血浆不稳定-NTBI成分的情况。NTBI仍然是系统性IO临床管理中的一个重要概念,因为系统性IO的许多发病率和死亡率已归因于过度暴露于NTBI导致的过量组织铁积累。然而,其在临床研究中的有限应用源于急需验证。

迄今为止,labile-NTBI检测的临床主要贡献是设计治疗方案,旨在减少组织暴露于血浆NTBI成分(如LPI),从而提供广泛的保护,免受即将到来的IO的影响。虽然血浆NTBI仍然是IO和潜在器官毒性的重要病理标志物,但迄今为止缺乏“毒性”血浆NTBI/LPI水平的临床验证,限制了其在临床实践中的应用。

目前仍需要建立一种简单、可靠的验证分析方法,用于进行大规模的临床研究以确定IO的程度,主要用于启动和/或优化治疗干预。就像血清胆固醇一样,实现这一目标的过程可能是漫长的。

 

原始出处:

Cabantchik, I.Z. and Hershko, C. (2021), PLASMA NON TRANSFERRIN BOUND IRON- NTBI REVISITED Implications for systemic iron overload and in iv iron supplementation. Am J Hematol. Accepted Author Manuscript. https://doi.org/10.1002/ajh.26374

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    2021-12-12 fusion
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    2021-10-16 kksonne
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