Blood:胞外组蛋白可增加红细胞的渗透脆性、诱导贫血。

2017-11-15 MedSci MedSci原创

已发现细胞外组蛋白在多种疾病的发病过程中发挥重要作用,主要是通过其细胞毒性影响有核细胞,及其促进血小板激活导致血栓形成和血小板减少症的特性。但胞外组蛋白对于红细胞功能的影响尚知之甚少。

中心点:

组蛋白可通过浓度依赖性方式促进体外红细胞聚集、沉降、渗透脆性和脾脏滞留。

组蛋白可诱发体内贫血,并可在几分钟内增加脾脏血红蛋白含量、使血小板和白细胞减少。

摘要:

已发现细胞外组蛋白在多种疾病的发病过程中发挥重要作用,主要是通过其细胞毒性影响有核细胞,及其促进血小板激活导致血栓形成和血小板减少症的特性。但胞外组蛋白对于红细胞功能的影响尚知之甚少。

Farzaneh Kordbacheh等人发现组蛋白可通过浓度依赖性方式促进红细胞聚集、沉降,增加红细胞的渗透脆性和溶解。此外,组蛋白通过减少红细胞通过人工脾而破坏红细胞的变性力。

体内注射组蛋白后数分钟内即可出现贫血,伴随脾内血红蛋白浓度增加,而上述体外实验结果与此相映衬。此外,还观察到血小板减少症和白细胞减少症。

上述研究结果提示组蛋白结合到红细胞上,可能会导致在炎症环境中所观察到的红细胞沉降率(ESR)增加。此外,组蛋白诱导的RBC溶解和脾脏清除率增加或许是危重症患者中发生的原因不明的贫血的重要因素。

原始出处:

Farzaneh Kordbacheh,et al.Extracellular histones induce erythrocyte fragility and anemia.Blood  2017  :blood-2017-06-790519;  doi: https://doi.org/10.1182/blood-2017-06-790519

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    2017-11-20 大爰

    学习了谢谢分享!!

    0

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    2017-11-17 xqptu
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    2017-11-17 大爰

    学习了谢谢分享!!

    0

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    2017-11-17 Drhzm308

    谢谢.学习了

    0

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    2017-11-16 李东泽

    是很好的学习材料.不错.以后会多学习.

    0

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    2017-11-15 明崖

    学习了.希望继续研究

    0

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