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[Dynamic changes in the platelet granule membrane glycoprotein level in patients with acute myocardial infarction]
Insights
Platelet granule membrane glycoprotein (GMP-140) levels are elevated in acute myocardial infarction (AMI) patients for three weeks. This indicates continuous platelet activation and may serve as an index for coronary artery thrombus formation.
Area of Science:
- Biochemistry
- Hematology
- Cardiology
Context:
- Acute myocardial infarction (AMI) involves complex pathophysiological processes.
- Platelet activation is a critical component in the development of AMI and coronary artery thrombus formation.
- Monitoring platelet activation markers can provide insights into disease progression and prognosis.
Purpose:
- To measure platelet granule membrane glycoprotein (GMP-140) levels in patients with AMI.
- To investigate the temporal changes in GMP-140 levels during the initial weeks post-infarction.
- To explore the correlation between GMP-140 levels, severe arrhythmia, and aspirin administration in AMI patients.
Summary:
- Platelet GMP-140 levels were significantly elevated in the first three days after AMI, dropping but remaining high until the third weekend compared to controls.
- GMP-140 levels were higher in the initial days post-AMI than at subsequent weekends.
- No significant correlation was found between GMP-140 levels and severe arrhythmia or aspirin use.
Impact:
- The findings suggest continuous platelet activation in AMI patients for up to three weeks.
- Elevated GMP-140 levels may serve as an important indicator of coronary artery thrombus formation.
- This research contributes to understanding the role of platelets in AMI pathophysiology.
Abstract:
Platelet granule membrane glycoprotein (GMP-140) level was measured by using 125I labelled monoclonal antibody (SZ-51) in 20 patients with acute myocardial infarction in the first three days and at the first three weekends. The correlation of severe arrhythmia and administration of aspirin with platelet GMP-140 in AMI were studied respectively. It is shown that platelet GMP-140 increased significantly in the first three days after AMI, then it dropped quickly, but remained at high level as compared with the controlled group till the third weekend (P < 0.01). Platelet GMP-140 level was higher in the first three days than at the first three weekends (P < 0.01). The changes of platelet GMP-140 have not been shown to be related with severe arrhythmia or administration of aspirin (P > 0.05). The results indicated that the platelets in AMI are activated continuously in the first three weeks after infarction; it might be thought as an important index of coronary artery thrombus formation.