TY - JOUR
T1 - Restoration of coronary flow in myocardial infarction by intravenous chimeric 7E3 antibody without exogenous plasminogen activators
T2 - Observations in animals and humans
AU - Gold, Herman K.
AU - Garabedian, Harry D.
AU - Dinsmore, Robert E.
AU - Guerrero, Luis J.
AU - Cigarroa, Joaquin E.
AU - Palacios, Igor F.
AU - Leinbach, Robert C.
PY - 1997/4/1
Y1 - 1997/4/1
N2 - Background: Coronary thrombus is composed of platelets and fibrin, and during thrombolytic treatment, reflow may be slowed by platelet deposition. It may be possible to initiate coronary reflow without exogenous plasminogen activators by blocking platelet aggregation while fibrin generation is impeded with heparin. Methods and Results: In 14 dogs, left anterior descending coronary artery thrombosis was produced by endothelial trauma and thrombin instillation in the presence of stenosis distally. Reflow was monitored by flow probe during treatment with (1) heparin, (2) heparin and aspirin, and (3) heparin, aspirin, and intravenous 7e3. Eighty percent of dogs treated with the third combination showed stable reflow (≤ 25% of prestenotic flow) in 50 ±9 minutes. In addition, 13 patients were studied during intravenous administration of c7E3 10 minutes before primary angioplasty for acute myocardial infarction and Thrombolysis In myocardial Infarction (TIMI) grade 0 or 1 flow. Pretreatment included heparin and oral aspirin. Flow increased during a 10-minute period by at least one TIMI grade in 11 (85%) of 13 and reached TIMI grade 2 or 3 in 7 (54%) of 13 patients. Average TIMI grade flow increased from 0.31 ± 0.5 to 1.54±0.8 (P<.001). Thrombus length 10 minutes after c7e3 was 5.1±3.5 mm. All but 1 patient then underwent angioplasty. There were no complications. Conclusions: Coronary reflow can be initiated by intravenous 7E3 administration in 'the presence of heparin and aspirin. In human patients, this flow can be observed in 10 minutes without exogenous thrombolytic agents.
AB - Background: Coronary thrombus is composed of platelets and fibrin, and during thrombolytic treatment, reflow may be slowed by platelet deposition. It may be possible to initiate coronary reflow without exogenous plasminogen activators by blocking platelet aggregation while fibrin generation is impeded with heparin. Methods and Results: In 14 dogs, left anterior descending coronary artery thrombosis was produced by endothelial trauma and thrombin instillation in the presence of stenosis distally. Reflow was monitored by flow probe during treatment with (1) heparin, (2) heparin and aspirin, and (3) heparin, aspirin, and intravenous 7e3. Eighty percent of dogs treated with the third combination showed stable reflow (≤ 25% of prestenotic flow) in 50 ±9 minutes. In addition, 13 patients were studied during intravenous administration of c7E3 10 minutes before primary angioplasty for acute myocardial infarction and Thrombolysis In myocardial Infarction (TIMI) grade 0 or 1 flow. Pretreatment included heparin and oral aspirin. Flow increased during a 10-minute period by at least one TIMI grade in 11 (85%) of 13 and reached TIMI grade 2 or 3 in 7 (54%) of 13 patients. Average TIMI grade flow increased from 0.31 ± 0.5 to 1.54±0.8 (P<.001). Thrombus length 10 minutes after c7e3 was 5.1±3.5 mm. All but 1 patient then underwent angioplasty. There were no complications. Conclusions: Coronary reflow can be initiated by intravenous 7E3 administration in 'the presence of heparin and aspirin. In human patients, this flow can be observed in 10 minutes without exogenous thrombolytic agents.
KW - 7E3
KW - myocardial infarction
KW - platelet aggregation inhibitors
KW - reperfusion
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U2 - 10.1161/01.CIR.95.7.1755
DO - 10.1161/01.CIR.95.7.1755
M3 - Article
C2 - 9107158
AN - SCOPUS:0030998690
SN - 0009-7322
VL - 95
SP - 1755
EP - 1759
JO - Circulation
JF - Circulation
IS - 7
ER -