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[Correlation of C-reactive protein with activity of Crohn's disease]
Chuan-hua Yang1, Xiao-yu Chen, Feng Yang
1Shanghai Institute of Digestive Disease, Renji Hospital, Shanghai Jiaotong University, Shanghai 200001, China.
Insights
C-reactive protein (CRP) effectively reflects moderate to severe colonic Crohn's disease (CD) activity and drug treatment effects. CRP levels correlate with disease recurrence and NF-kappaB p65 expression in colon tissue.
Area of Science:
- Gastroenterology
- Immunology
- Clinical Chemistry
Context:
- Crohn's disease (CD) is a chronic inflammatory condition requiring accurate activity assessment.
- Biomarkers are crucial for monitoring disease progression and treatment efficacy in CD.
Purpose:
- To evaluate the utility of C-reactive protein (CRP) as a marker for Crohn's disease activity.
- To assess the correlation of CRP with established disease activity indices and inflammatory markers.
Summary:
- CRP levels were analyzed in 85 CD patients alongside erythrocyte sedimentation rate (ESR), albumin, hemoglobin, and Crohn's Disease Activity Index (CDAI).
- CRP elevation correlated with ESR and was significantly higher in active, severe, or colonic CD.
- CRP levels decreased with effective drug treatment and increased upon recurrence, paralleling NF-kappaB p65 expression.
Impact:
- CRP is a valuable, accessible biomarker for monitoring moderate to severe colonic CD activity.
- CRP can indicate treatment response and disease recurrence in early stages of CD.
- Findings suggest a link between systemic CRP levels and specific molecular pathways (NF-kappaB p65) in CD pathogenesis.
Objective:
To investigate the role of C-reactive protein (CRP) in evaluating activity of Crohn's disease (CD).
Methods:
85 patients with Crohn's disease, 59 males and 26 females, aged 15-69, underwent laboratory examination of CRP, erythrocyte sedimentation rate (ESR), albumin, and hemoglobin. Crohn's disease activity index (CDAI) was calculated. Endoscopy was conducted to collect samples of colon mucosa to undergo HE staining for pathological examination and immunohistochemical staining for the expression of nuclear factor-kappaB p65 (NF-kB p65). Logistic regression analysis was used to estimate the correlation of CRP with ESR, CDAI, endoscopic activity, pathologic activity, hypoalbuminemia, and anemia. The effects of lesion location, clinical severity, and drug were considered.
Results:
CRP elevation was correlated with ESR, but not correlated with CDAI, endoscopic activity, pathologic activity, hypoalbuminemia, and anemia. CRP was significantly elevated in active CD (P < 0.01), especially in severe or colonic CD (P < 0.05). CRP rapidly decreased when the CD activity was effectively controlled by drugs (P < 0.01), and was reelevated when disease recurred (P > 0.05). Serum CRP elevation was paralleled with the NF-kappaB p65 level (P = 1.0).
Conclusion:
More suitable for reflection of the activity of moderate or severe colonic CD, CRP can reflect the effects of drugs in the early stage of CD. The serum CRP elevation is consistent with the NF-kappaB p65 expression in colon tissues.
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