Relationship between serum cystatin C level and clinical features in patients with neurosyphilis
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摘要: 目的 探讨神经梅毒患者血清胱抑素C(Cys C)水平与临床特征的关系,了解其临床意义。 方法 选取2016年9月—2018年5月就诊于杭州市西溪医院的神经梅毒患者(30例)、非神经梅毒患者(30例)及健康体检者(20例)。比较分析各组间临床资料的差异;采用免疫比浊法检测各组血清胱抑素C水平,比较各组之间血清抑素C水平差异及治疗前后变化。 结果 神经梅毒患者血清胱抑素C显著高于非神经梅毒患者及健康对照组(P<0.05),非神经梅毒患者血清Cys C水平有高于健康对照组趋势,但差异无统计学意义(P>0.05)。神经梅毒患者经驱梅治疗后血清胱抑素C可显著下降(P<0.05)。Cys C预测神经梅毒ROC曲线下面积0.71[P=0.022,95%CI(0.53,0.89)],最佳诊断界值为1.09 mg/L,其预测敏感度为55%,特异度为90%;直线相关分析显示,血清胱抑素C水平与脑脊液蛋白水平及简明精神量表评分正相关(r=0.232,P=0.012;r=0.273,P=0.003),血清胱抑素C水平与脑脊液RPR滴度、细胞数及脑脊液压力无明显相关性(r=0.413,P=0.154;r=0.313,P=0.446;r=-0.124,P=0.142)。 结论 血清胱抑素C与神经梅毒发生具有相关性,可评估神经梅毒病情,并对神经梅毒存在一定的预测价值。
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关键词:
- 神经梅毒 /
- 胱抑素C /
- 半胱氨酸组织蛋白酶S
Abstract: Objective To study the relationship between serum cystatin C (Cys C) level and clinical features in patients with neurosyphilis, and evaluate its clinical significance. Methods We collected 30 patients as neurosyphilis group, 30 patients as syphilis (non-neurosyphilis, N-NS) group and 20 healthy as control group between September 2016 and May 2018. The levels of serum Cys C were tested by using immunology turbidimetric method. The clinical and laboratory characteristics were compared among the three groups. Results The patients with neurosyphilis had higher serum Cystatin C levels as compared with the patients with syphilis and healthy control (P<0.05); however, no significant difference between the N-NS and control group (P>0.05). Serum Cystatin C level was significantly decreased in neurosyphilis group after the antisyphilitic treatment (P<0.05). The mean ROC-plot AUC for Cys C was 0.71 [P=0.022, 95% CI(0.53,0.89)]. The optimal threshold value for Cys C was 1.09 mg/L with the sensitivity of 55% and specificity of 90%. The correlation analysis showed that the serum Cys C levels were positively associated with CSF protein levels and MMSE score (r=0.232, P=0.012; r=0.273, P=0.003), but not associated significantly with RPR titer, CSF cell count and CSF pressure (r=0.413, P=0.154; r=0.313, P=0.446; r=-0.124, P=0.142) in patients with neurosyphilis. Conclusion The levels of serum Cys C is significantly associate with neurosyphilis. To test the levels of Cys C can evaluate the severity of the disease and predict the risk of getting neurosyphilis.-
Key words:
- Neurosyphilis /
- Cystatin C /
- Cathepsin S
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