Table 2.

Effects of Antagonists on AP5 and PMI-1 Expression and OP-G2 Binding

αIIbβ3 Antagonist AP5 Expression ED50 (nmol/L) (n = 6)Anti-LIBS1 Expression ED50 (nmol/L) (n = 3) Anti-LIBS2 Expression ED50(nmol/L) (n = 3) PMI-1 Expression ED50(nmol/L) (n = 3) OP-G2 Binding IC50(nmol/L) (n = 3) PMI-1/FBG Ratio OP-G2/FBG RatioGroup
FR184764  104.5 ± 61.5  48.0 ± 11.8 270.0 ± 104.4  226.7 ± 36.8  583.3 ± 102.7 25.2  64.8  
SC54701  173.0 ± 74.5  95.0 ± 35.0 443.3 ± 136.5  246.7 ± 103.7  1,233.3 ± 262.5 21.5  107.2  I  
FR169824  258.3 ± 75.7 150.0 ± 43.6  560.0 ± 87.1  290.0 ± 96.3 1,866.7 ± 368.2  14.7  94.8  
FK633 520.0 ± 195.2  260.0 ± 121.2  1,230.0 ± 311.0 2,266.7 ± 1,228.4  5,600.0 ± 496.7  57.7  142.5 
 
Ro44-9883  (−)  (−)  (−) 3.3 ± 1.4  5.8 ± 0.8  0.75  1.3 II  
MK383  (−)  (−) (−)  14.7 ± 7.5  46.7 ± 8.1  2.4 7.7 
αIIbβ3 Antagonist AP5 Expression ED50 (nmol/L) (n = 6)Anti-LIBS1 Expression ED50 (nmol/L) (n = 3) Anti-LIBS2 Expression ED50(nmol/L) (n = 3) PMI-1 Expression ED50(nmol/L) (n = 3) OP-G2 Binding IC50(nmol/L) (n = 3) PMI-1/FBG Ratio OP-G2/FBG RatioGroup
FR184764  104.5 ± 61.5  48.0 ± 11.8 270.0 ± 104.4  226.7 ± 36.8  583.3 ± 102.7 25.2  64.8  
SC54701  173.0 ± 74.5  95.0 ± 35.0 443.3 ± 136.5  246.7 ± 103.7  1,233.3 ± 262.5 21.5  107.2  I  
FR169824  258.3 ± 75.7 150.0 ± 43.6  560.0 ± 87.1  290.0 ± 96.3 1,866.7 ± 368.2  14.7  94.8  
FK633 520.0 ± 195.2  260.0 ± 121.2  1,230.0 ± 311.0 2,266.7 ± 1,228.4  5,600.0 ± 496.7  57.7  142.5 
 
Ro44-9883  (−)  (−)  (−) 3.3 ± 1.4  5.8 ± 0.8  0.75  1.3 II  
MK383  (−)  (−) (−)  14.7 ± 7.5  46.7 ± 8.1  2.4 7.7 

Values are given as the mean ± SD with indicated (n).

Abbreviations: FBG, fibrinogen; PMI-1/FBG ratio, ED50 for PMI-1 epitope expression/IC50 for FBG binding; OP-G2/FBG ratio, IC50 for OP-G2 binding/IC50 for FBG binding.

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