癌症开户送体验金血栓并发症形成机制_科研在线_抗癌健康网 - 开户送体验金
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2018-05-15

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导读:临床上肿瘤开户送体验金经常性出现癌症相关的血栓,其发生的病理机制一直以来悬而未决。然而,可以明确的是血栓的出现

  临床上肿瘤开户送体验金经常性出现癌症相关的血栓,其发生的病理机制一直以来悬而未决。

  然而,可以明确的是血栓的出现与肿瘤开户送体验金的预后较差有密切联系,血栓是导致癌症开户送体验金死亡的第二大原因。

  最近一项研究表明染色质通过中性粒细胞形成的胞外菌网释放到血液中是导致凝血和血栓的主要原因。研究人员使用慢性粒细胞性白血病小鼠模型发现,恶性和非恶性嗜中性粒细胞更容易形成胞外菌网。

  这种胞外菌网的形成在最新开户送体验金大全和肺癌模型中也观察到,这表明癌症通过影响宿主系统诱发外周血中性粒细胞的增加,导致胞外菌网更容易形成。此外,在晚期最新开户送体验金大全模型中,胞外菌网的形成伴随肺静脉血栓而出现。

  在血栓前期阶段给予癌症老鼠模型低剂量LPS​​结合G-CSF后,发现血小板数目减少了,微血栓形成也被抑制。总之研究证实通过胞外菌网的形成所释放的染色质是导致癌症开户送体验金血栓形成的主要原因之一,或许这是一个在临床上可以用来改善癌症开户送体验金血栓症状的一个潜在靶标。

  doi:10.1073/pnas.1200419109

  PMC:

  PMID:

  Cancers predispose neutrophils to release extracellular DNA traps that contribute to cancer-associated thrombosis

  Demers, M., D. S. Krause, et al.

  Cancer-associated thrombosis often lacks a clear etiology. However, it is linked to a poor prognosis and represents the second-leading cause of death in cancer patients. Recent studies have shown that chromatin released into blood, through the generation of neutrophil extracellular traps (NETs), is procoagulant and prothrombotic. Using a murine model of chronic myelogenous leukemia, we show that malignant and nonmalignant neutrophils are more prone to NET formation. This increased sensitivity toward NET generation is also observed in mammary and lung carcinoma models, suggesting that cancers, through a systemic effect on the host, can induce an increase in peripheral blood neutrophils, which are predisposed to NET formation. In addition, in the late stages of the breast carcinoma model, NETosis occurs concomitant with the appearance of venous thrombi in the lung. Moreover, simulation of a minor systemic infection in tumor-bearing, but not control, mice results in the release of large quantities of chromatin and a prothrombotic state. The increase in neutrophil count and their priming is mediated by granulocyte colony-stimulating factor (G-CSF), which accumulates in the blood of tumor-bearing mice. The prothrombotic state in cancer can be reproduced by treating mice with G-CSF combined with low-dose LPS and leads to thrombocytopenia and microthrombosis. Taken together, our results identify extracellular chromatin released through NET formation as a cause for cancer-associated thrombosis and unveil a target in the effort to decrease the incidence of thrombosis in cancer patients.

[关键词: 癌症 血栓 胞外菌网 ]

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