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Elevated serum eotaxin levels in patients with inflammatory bowel disease
Amparo Mir1, Miguel Minguez, Jose Tatay
1Department of Allergy and Clinical Immunology, Hospital Clínico Universitario, Universidad de Valencia, Spain.
The American Journal of Gastroenterology
|July 4, 2002
Summary
Serum eotaxin levels are elevated in inflammatory bowel disease (IBD) patients, particularly in Crohn's disease. This suggests eotaxin plays a role in IBD pathogenesis and eosinophil involvement.
Area of Science:
- Immunology
- Gastroenterology
- Biochemistry
Background:
- Eotaxin is a chemokine with selective chemotactic activity for eosinophils.
- Eosinophils accumulate and activate in inflammatory bowel disease (IBD).
Purpose of the Study:
- To investigate the role of eotaxin in IBD pathophysiology.
- To determine if serum eotaxin levels are increased in IBD patients.
Main Methods:
- Serum eotaxin levels were measured using ELISA in 72 IBD patients (35 ulcerative colitis, 37 Crohn's disease) and controls.
- Blood cell subpopulations were analyzed using an automated autoanalyzer.
Main Results:
- Serum eotaxin levels were significantly higher in both Crohn's disease and ulcerative colitis patients compared to controls (p < 0.0001).
- Inactive Crohn's disease showed higher eotaxin levels than inactive ulcerative colitis (p < 0.05).
- A negative correlation was observed between serum eotaxin and peripheral blood eosinophil counts in Crohn's disease patients (p < 0.05).
Conclusions:
- Increased eotaxin expression in IBD suggests its involvement in disease pathogenesis.
- The heightened eotaxin levels, especially in Crohn's disease, and their correlation with eosinophil counts support the functional role of eosinophils in IBD pathophysiology.