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标题 抗凝血酶Ⅲ、蛋白C水平与脓毒症患者病情严重程度及预后关系的临床研究
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    董世笑

    

    

    

    [摘要] 目的 探討抗凝血酶Ⅲ(antithrombin Ⅲ,AT Ⅲ)、蛋白C(Protein C)水平与脓毒症的病情严重程度及预后的关系。 方法 选择2010年11月~2017年11月脓毒症患者200例,观察AT-Ⅲ、PC水平及根据脓毒症严重程度分为脓毒症组(S1)共59例,严重脓毒症组(S2)共86例,脓毒症休克组(S3)共55例,比较三组的AT-Ⅲ、PC水平。根据患者28 d预后情况分为存活组与死亡组,比较两组AT-Ⅲ、PC水平。评价AT-Ⅲ、PC对脓毒症患者预后的判断价值。 结果 (1)S2组、S3组AT-Ⅲ水平低于S1组,两组比较差异有统计学意义(P<0.05);S2组、S3组PC水平低于S1组,两组比较差异有统计学意义(P<0.05);S3组AT-Ⅲ水平显著低于S2组,两组比较,差异有统计学意义(P<0.05);两组PC水平比较,差异无统计学意义(P>0.05)。(2)死亡组患者AT-Ⅲ、PC水平明显低于存活组,差异有统计学意义(P<0.05)。(3)AT-Ⅲ、PC、APACHE Ⅱ评分预测脓毒症患者死亡的ROC曲线下面积分别为0.5901,0.6098,0.5901。当AT-Ⅲ取42.5%为截断值时,其敏感度为21%,特异度为91.3%;当PC取49.5%为截断值时,其敏感度为40.3%,特异度为81.2%。 结论 脓毒症患者的AT-Ⅲ、PC水平较低,其与脓毒症的严重程度密切相关,并对其预后具有一定的指导意义。

    [关键词] 脓毒症;抗凝血酶-Ⅲ;蛋白C;预后

    [中图分类号] R459.7? ? ? ? ? [文献标识码] B? ? ? ? ? [文章编号] 1673-9701(2020)32-0114-04

    [Abstract] Objective To explore the relationship between antithrombin Ⅲ(AT Ⅲ), protein C(PC) levels and the severity of sepsis and its influence on the prognosis. Methods A total of 200 patients with sepsis admitted to our hospital from November 2010 to November 2017 were selected as research objects. According to the levels of AT-Ⅲ and PC and the severity of sepsis, they were divided into the sepsis group(n=59, S1), the severe sepsis group(n=86, S2), and the septic shock group(n=55, S3). The levels of AT-Ⅲ and PC in three groups were compared. According to the 28-day prognosis, the patients were divided into the survival group and death group, and the levels of AT-Ⅲ and PC in the two groups were compared. The prognostic value of AT-Ⅲ and PC in patients with sepsis was evaluated. Results (1)The level of AT-III in S2 and S3 groups was lower than that in S1 group, and the difference was statistically significant(P<0.05). The level of PC in S2 and S3 groups was lower than that in S1 group, and the difference was statistically significant(P<0.05). The level of AT-III in S3 group was significantly lower than that in S2 group, and the difference was statistically significant(P<0.05). There was no significant difference in PC level between the two groups(P>0.05). (2)The levels of AT-III and PC in the death group were significantly lower than those in the survival group, and the difference was statistically significant(P<0.05). (3)The areas under the ROC curve of AT-Ⅲ, PC and APACHE Ⅱ scores for predicting the death of septic patients were 0.5901,0.6098 and 0.5901, respectively.When 42.5% was taken as cutoff value, the sensitivity of AT-Ⅲ was 21% and the specificity was 91.3%. When 49.5% was taken as cutoff value, the sensitivity of PC was 40.3% and the specificity was 81.2%. Conclusion The levels of AT-Ⅲ and PC are low in patients with sepsis, which are closely related to the severity of sepsis and have certain guiding significance for the prognosis.

    PC属于丝氨酸蛋白酶,主要由肝脏合成。脓毒症患者PC水平下降的主要原因有:(1)血栓调节蛋白(Thrombomodulin,TM)和内皮细胞PC受体数量因细胞因子级联反应的激活显著降低。(2)由于感染导致消耗和降解增加、肝脏合成减少。(3)辅助因子PS受到抑制。(4)肝脏合成PC受到抑制[13-16]。Andrew等[18]发现脓毒症患者的PC水平明显低于正常人,且预后较差。本研究证实PC水平与脓毒症严重程度相关,与预后相关,与有关学者的研究是一致的[17]。

    本研究显示,AT-Ⅲ、PC活性在脓毒症患者中下降,与疾病严重程度相关,死亡组患者AT-Ⅲ、PC活性显著下降,对判断预后有意义[18]。

    综上所述,抗凝血酶Ⅲ、蛋白C水平与脓毒症患者病情严重程度存在密切相关性,有利于指导临床及评价预后。

    [参考文献]

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    [18] 刘铭传,李林成,白晓智.脓毒症病理生理及信号转导机制的研究进展[J].中华医院感染学杂志,2019,29(22):3511-3514,3520.

    (收稿日期:2020-06-09)

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