CD62pUsing Light Transmission Aggregometry and Flow Cytometry to Examine the Effect of Clopidogrel / 现代检验医学杂志

ABSTRACT

Objective To detect clopidogrel effect with light transmission aggregometry (LTA)and flow cytometry (FC). Methods ①Venous blood samples were taken from 71 inpatient with acute corotary syndrome (ACS)in PLA General Hos-pital,including unstable anqina,ST segment elevation myocardial infarction and non ST segment elevation myocardial infarc-tion (46 males,25 females)by random number table from June 2011 to March 2012,whose average age was 69(57~92).②All of them were served 160 mg aspirin and 300 mg clopidogrel after they were in hospital in the beginning,and then served with 75 mg/d clopidogrel for 6 months.On some day,firstly,they were required withdrawing drug for 10 days,and then ve-nous blood samples were separately taken from them before their served-clopidogrel again and their severd-clopidogrel 2 hours later.③The samples were assayed with LTA and FC simultaneously and the platelet aggregation rates before served-clopidogrel (ADPLTA-before serving ),platelet aggregation rates after served-clopidogrel (ADPLTA-after serving ),inhibition rates (ADPLTA-INDU ),PAC-1 activity percentage before served-clopidogrel (PAC-1 before serving ),PAC-1 activity percentage after served-clopidogrel (PAC-1 after serving ),inhibition rates (PAC-1 INHI ),CD62p activity percentage before served-clopidogrel (CD62pbefore serving ),CD62pactivity percentage after served-clopidogrel (CD62pafter serving ),inhibition rates (CD62pINHI )weregotten.All volunteers were signed informed consents and the experiment was approved by the hospital ethics committee.Re-sults ①The paired samples t-test was (t=-2.082,P =0.041)between ADPLTA-before serving (0%~97%)and ADPLTA-after serving (12%~97%),the paired samples t-test was (t = 3.663,P < 0.01)between PAC-1 before serving (15.1% ~ 78.9%)and PAC-1 after serving (14.5% ~ 78.3%);the paired samples t-test was (t = 2.082 and P = 0.041)between CD62pbefore serving (1.5% ~80.8%)and CD62pafter serving (1.4%~41.4%).②The pearson coeffcient correlation results wereADPLTA-INDU (0%~28.2%) and PAC-1 INHI (0.6%~ 9.1%)(r = 0.297,P = 0.012);ADPLTA-INDU (0% ~ 28.2%)and CD62pINHI (0.1% ~ 48.5%)(r =0.220,P =0.065);PAC-1 INHI (0.6%~9.1%)and CD62pINHI (0.1%~48.5%)(r=0.736,P <0.001).Conclusion Because the correlation was bad between the inhibition rates of clopidogrel detected by FC and them by LTA,FC didn’t apply to clin-ical routine examination of the platelet aggregation.But it could be used to scientific researchs and auxiliary confirmation of routine examination results.