肺炎衣原体感染与急性冠脉综合征的相关性

目的：测定急性冠脉综合征(ACS)患阿奇霉素治疗前后血肺炎衣原体(Cpn)DNA及IgG抗体滴度．探讨肺炎衣原体感染与ACS发生的相关关系。方法：选择ACS95例(观察组)及冠状动脉造影正常的55例非冠心病(对照组)。观察组采用随机双盲安慰剂对照的方法分别给予阿奇霉素及安慰剂治疗6个月，治疗前后应用巢式PCR法测定外周血单核细胞中Cpn—DNA，用间接微量免疫荧光法测定IgG抗体滴度。结果：Cpn-DNA阳性率及IgG抗体滴度观察组较对照组比较阳性率明显增高。治疗后DNA转阴率阿奇霉索治疗组明显优于安慰剂组，IgG抗体滴度治疗后无明显变化。结论：ACS患肺炎衣原体感染率高，检测DNA临床价值更大。

The Clinical Study of the Correlation between Chlamydia Pneumoniae Infection and Acute Coronary Syndrome

Objective:To investigate the correlation between infection with chlamydia pneumoniae(Cpn )and acute coronary syndrome(ACS).Methods:The peripheral blood mononuclear cell(PBMC) Cpn DNA and the titre of chlamydia pneumoniae specific IgG antibodies were measured in 95 patients with ACS and 55 patients without coronary heart disease.Then a prospective,randomized,double-blind, placebo-controlled study was conducted for 6 months in which azithromycin and placebo treatment were adopted respectively in ACS group. After treatment the blood sample were collected for repeated measurement.Results:The positive rates of Cpn DNA and the titres of IgG antibodies in ACS groups were significantly higher than those in control group. There was significiant difference in Cpn DNA negative rates between the azithromycin and the placebo treatment. IgG titre showed no significant difference after treatment either in patients with azithrornycin or in placebo groups.Conclusion:The detection of Cpn DNA in PBMC with nPCR should be of great value for identifying Cpn carriers and for monitoring antichlamydial therapy.