title: [Increased platelet-leukocyte aggregates in patients with acute coronary syndrome].
abstract: OBJECTIVE
  To compare the platelet-leukocyte-aggregates (PLAs) level among patients with acute coronary syndrome (ACS) and stable angina pectoris (SAP).
  
  
  METHODS
  Hospitalized patients were divided into three groups [ACS group (n=86), SAP group (n=54), the control group with 46 patients without coronary artery disease]. PLAs were measured by flow cytometry at admission before coronary angiography. ACS patients were further divided into low-risk group (0-108 points) and high-risk group (>109 points) according to GRACE scores at admission. PLA, platelet-monocyte aggregations (PMA), platelet-neutrophil aggregations (PNA), platelet-lymphocyte aggregations (PlyA) and hs-CRP values were compared among groups.
  
  
  RESULTS
  PLA (4.40%±3.08%), PMA (33.6%±21.5%), PNA (3.76%±5.06%), PLyA (2.03%±1.27%) and hs-CRP [5.75 (3.49, 9.15)] levels in ACS group were significantly higher than those in SAP and control groups (all P<0.05). PLA was also significantly higher in high-risk group than in the low-risk group (44.8%±18.0% vs. 13.0%±6.3%, P<0.01). Spearman correlation analysis showed that hs-CRP was positively correlated with PMA (r=0.547, P<0.01) and GRACE score is positively correlated with PMA, PLA, PNA and PlyA (r=0.746, 0.652, 0.460, respectively, all P<0.01).
  
  
  CONCLUSIONS
  PLAs is increased in ACS patients and higher PMA level is related with the unstable coronary syndrome in ACS patients. Increased PMA, PLA, PNA and PlyA levels is associated with higher GRACE score in ACS patients.
authors.affiliation: Guangdong Cardiovascular Institute, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou 510080, China.
authors.forename: Da-hao
authors.initials: DH
authors.lastname: Yang
authors.forename: Ning
authors.initials: N
authors.lastname: Tan
authors.forename: Peng-cheng
authors.initials: PC
authors.lastname: He
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Jian-yi
authors.initials: JY
authors.lastname: Wen
authors.forename: Ji-yan
authors.initials: JY
authors.lastname: Chen
authors.forename: Ying-ling
authors.initials: YL
authors.lastname: Zhou
authors.forename: Wen-hui
authors.initials: WH
authors.lastname: Huang
mesh_terms: D054058:Acute Coronary Syndrome / Q000097:blood / Q000175:diagnosis* / Q000503:physiopathology; D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007962:Leukocytes / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D015539:Platelet Activation; D010974:Platelet Aggregation; D055815:Young Adult