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Platelet Activation Markers Are Associated with Crohn's Disease Activity in Patients with Low C-Reactive Protein

Hiroshi Takeyama1, Tsunekazu Mizushima2, Hideki Iijima3

  • 1Department of Surgery, Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka, 565-0871, Japan.

Digestive Diseases and Sciences
|June 17, 2015
PubMed

Insights

Platelet factor 4 (PF-4) and β-thromboglobulin (β-TG) show promise as new markers for assessing Crohn's disease (CD) activity, especially in patients with low C-reactive protein (CRP). These markers correlate well with disease activity, offering a potential alternative to traditional indicators.

Area of Science:

  • Gastroenterology
  • Immunology
  • Hematology

Background:

  • C-reactive protein (CRP) is a standard inflammatory marker for Crohn's disease (CD) but may not reflect disease activity in patients with low CRP levels.
  • Platelet activation factors are increasingly recognized for their role in inflammatory processes.
  • Current methods for assessing CD activity may be limited in specific patient populations.

Purpose of the Study:

  • To identify novel biomarkers for evaluating disease activity in Crohn's disease (CD) patients with low C-reactive protein (CRP).
  • To investigate the association between CD activity and specific coagulation and fibrinolysis factors.
  • To explore the potential of platelet activation factors as indicators of inflammation in CD.

Main Methods:

  • Evaluated nine markers, including CRP, platelet count, white blood cell count, and specific coagulation factors (PF-4, β-TG), in 47 CD patients with low CRP (<1.0 mg/dl).
  • Classified patients into high (CDAI ≥ 150) and low (CDAI < 150) disease activity groups based on the Crohn's Disease Activity Index (CDAI).
  • Analyzed correlations between CDAI and marker levels, and performed receiver operating characteristic (ROC) curve analyses for potential biomarkers.

Main Results:

  • Significantly higher levels of platelet factor 4 (PF-4) and β-thromboglobulin (β-TG) were observed in patients with high CD activity (CDAI-H) compared to those with low activity (CDAI-L) (P < 0.01).
  • CDAI showed a positive correlation with PF-4 and β-TG levels (r = 0.4202 and 0.4321, respectively).
  • ROC curve analysis indicated high sensitivity and specificity for PF-4 and β-TG in diagnosing active CD, particularly β-TG for sensitivity (81%) and PF-4 for specificity (84.7%).

Conclusions:

  • Platelet factor 4 (PF-4) and β-thromboglobulin (β-TG) are strongly correlated with Crohn's disease activity (CDAI) in patients with low C-reactive protein (CRP).
  • These platelet activation markers demonstrate potential as valuable tools for assessing disease activity in CD patients where CRP levels are uninformative.
  • Further research into PF-4 and β-TG could lead to improved diagnostic and monitoring strategies for Crohn's disease.
Abstract

Keywords:
Beta-thromboglobulin (β-TG)Crohn’s disease (CD)Inflammatory bowel diseases (IBD)Platelet factor 4 (PF-4)

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