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Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
Exposure to hookworms in patients with Crohn's disease: a case-control study
J Kabeerdoss1, S Pugazhendhi, V Subramanian
1Department of Gastrointestinal Sciences, Christian Medical College, Vellore, India.
Alimentary Pharmacology & Therapeutics
|August 19, 2011
Summary
Prior hookworm infection may protect against Crohn's disease. Reduced T cell activation and interferon-gamma responses to hookworm antigens were observed in Crohn's disease patients, suggesting an inverse association.
Area of Science:
- Immunology
- Gastroenterology
- Epidemiology
Background:
- Helminths, such as hookworms, have demonstrated potential in mitigating intestinal inflammation.
- Crohn's disease is an inflammatory condition with increasing prevalence in regions undergoing epidemiological transition.
- Investigating the role of parasitic infections in autoimmune diseases aligns with the hygiene hypothesis.
Purpose of the Study:
- To investigate the potential protective association between prior hookworm infection and Crohn's disease.
- To explore immune responses to hookworm antigens in individuals with and without Crohn's disease.
- To assess immune cell activation and cytokine production in response to helminthic antigens.
Main Methods:
- Peripheral blood mononuclear cells (PBMCs) from Crohn's disease patients and healthy controls were stimulated with hookworm antigens.
- T cell activation was measured by assessing the CD69 marker.
- Interferon-gamma (IFN-γ) production was analyzed using ELISPOT assays.
Main Results:
- Crohn's disease patients were more frequently from urban backgrounds.
- Significantly lower T cell activation (CD3+CD69+) in response to hookworm antigens was observed in Crohn's disease patients compared to controls.
- Fewer Crohn's disease patients exhibited interferon-gamma ELISPOT responses to hookworm antigens compared to controls.
Conclusions:
- An inverse association exists between Crohn's disease and reactivity to hookworm antigens.
- These findings support the hygiene hypothesis, suggesting parasitic infections may play a role in immune regulation.
- Further research is warranted to elucidate the mechanisms underlying this association.
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