Key result
Plasma concentrations of beta-thromboglobulin were significantly inversely correlated with platelet life-span estimated using the multiple hit model (r = -0.39, p < 0.001).
Why the study?
Do plasma concentrations of beta-thromboglobulin and platelet factor 4 correlate with platelet survival in patients with coronary artery disease?
Observational (n=91)
Do plasma concentrations of beta-thromboglobulin and platelet factor 4 correlate with platelet survival in patients with coronary artery disease?
Effect estimate: r = -0.39
p-value: p=<0.001
Plasma concentrations of betaTG and PF4 correlate with shortened platelet survival, suggesting they may serve as indicators of in vivo platelet activation and involvement in coronary artery disease.
May indicate platelet activation in CAD; hypothesis-generating marker role, requires prospective validation before clinical use.
Relationships between 51Cr platelet survival and plasma concentrations of beta-thromboglobulin (betaTG) and platelet factor 4 (PF4) were analyzed in 91 studies of patients with coronary artery disease. betaTG was significantly correlated with platelet life-span, turnover, and the number of hits in the multiple hit model. PF4 was significantly correlated with life-span and turnover. The most significant relationship involving platelet-specific protein concentrations and life-span estimates was between betaTG and life-span estimated using the multiple hit model (r = -0.39, p less than 0.001). There was a high correlation between betaTG and PF4 (r = 0.62, p less than 0.001), and no improvement could be obtained by combining the measurements of the two proteins in any regression with life-span or turnover. The results indicate that the patients with the shortest platelet survival time in this group tended to have the highest plasma concentration of betaTG and PF4 and thus probably increased in vivo release of betaTG and PF4. They strengthen the claim that these platelet-specific proteins may be indicators of platelet involvement in disease.
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Dj et al. (1980) conducted an observational in coronary artery disease (n=91). Plasma concentrations of beta-thromboglobulin (betaTG) and platelet factor 4 (PF4) was evaluated on Correlation between platelet-specific protein concentrations and platelet life-span (r = -0.39, p=<0.001). Plasma concentrations of beta-thromboglobulin were significantly inversely correlated with platelet life-span estimated using the multiple hit model (r = -0.39, p < 0.001).
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