Is there a role of C‐reactive protein in red blood cell aggregation?
2015
Summary
Introduction
Numerous clinical studies related the plasma level of C-reactive protein (CRP) to the erythrocyte sedimentation rate (ESR) independent of the kind of disease. The molecular regulation of the process is unknown.
Methods
We performed a meta-analysis of 10 previous studies and experimentally probed for a direct action of CRP on red blood cells (RBCs) by different methods including determination of a microscopic aggregation index, Ca2+ imaging and analysis of sedimentation experiments.
Results
The meta-analysis revealed a statistically significant correlation (Pearson coefficient of 0.37; P < 0.0001), but we could not find any experimental evidence for a direct CRP–RBC interaction. Instead, we could confirm a correlation between fibrinogen level and ESR.
Conclusion
Therefore, we concluded that CRP and ESR cannot account for nor replace each other as a diagnostic measure. The correlation between CRP level and ESR is most probably caused by fibrinogen, because its increase coincides with elevated CRP levels.
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