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A new model for evaluation of thrombosis and ischaemia/reperfusion injury

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

BACKGROUND: The purpose of the present study was to describe infarct size and platelet accumulation when reperfusion injury was combined with a thrombogenic lesion in the coronary artery. The left anterior descending artery was damaged in 11 pigs and subsequently occluded proximal to the lesion for 50 min, followed by 4 h of reperfusion.

RESULTS: The infarct size/area at risk was 40 (35 63)%. Infarct size correlated with troponin-T-3 h (p=0.85, p<0.002), but not with creatine kinase-3 h. Platelet aggregation decreased by 34% (p<0.01) at 15 min of reperfusion, but returned to baseline. Platelet accumulation in the left ventricle was significantly higher in the area at risk (194 (157-206)%) compared to the right ventricle (137 (120-142)%); p<0.05).

CONCLUSION: A decreased platelet reactivity and increased accumulation of platelets in the area at risk indicates that activated platelets become entrapped in the myocardium. Troponin-T was a better marker of myocardial damage than creatine kinase in this in vivo model with pigs.

OriginalsprogEngelsk
TidsskriftAPMIS : acta pathologica, microbiologica, et immunologica Scandinavica
Vol/bind108
Udgave nummer5
Sider (fra-til)373-9
Antal sider7
ISSN0903-4641
DOI
StatusUdgivet - maj 2000

ID: 243520546