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Characterisation of the inflammatory reaction in equine idiopathic focal eosinophilic enteritis and diffuse eosinophilic enteritis.
- Source :
-
Equine veterinary journal [Equine Vet J] 2008 Jun; Vol. 40 (4), pp. 386-92. - Publication Year :
- 2008
-
Abstract
- Reasons for Performing Study: Idiopathic focal eosinophilic enteritis (IFEE) and diffuse eosinophilic enteritis (DEE) are primary eosinophilic intestinal conditions without a known cause that are associated with an increasing number of surgical colic cases. Histology may be helpful in defining disease aetiology and pathogenesis.<br />Objectives: To characterise further the inflammatory infiltrate in equine IFEE and to compare the condition with DEE.<br />Methods: Twenty-three IFEE cases and 5 DEE cases were examined by light microscopy including immunohistology to identify infiltrating leucocytes. Inflammatory infiltrates in mucosa and submucosa were characterised in IFEE lesions (Group 1), the intestine distant from the lesions in IFEE (Group 2) and DEE (Group 3).<br />Results and Conclusions: IFEE lesions represented an accumulation of leucocytes in submucosa and muscularis, with dominance of eosinophils and macrophages and smaller numbers of lymphocytes, plasma cells and neutrophils. T cells represented the dominant lymphocytes. The mucosa overlying the lesion and both mucosa and submucosa in IFEE nonlesion sites and in DEE exhibited a similar composition, with different prevalence of various cell types. Macrophages were significantly more prevalent in the mucosal and submucosal infiltrates in IFEE nonlesion sites than in DEE, and lymphocytes significantly more prevalent in the mucosa in DEE than in IFEE nonlesion sites. The findings confirm IFEE as a primary eosinophilic intestinal disorder and indicate that IFEE represents a focally exacerbated inflammatory reaction in horses with DEE, possibly due to functional changes in the macrophage and T cell components, with subsequent excessive recruitment of both eosinophils and macrophages.
- Subjects :
- Animals
Enteritis etiology
Enteritis immunology
Enteritis pathology
Eosinophilia etiology
Eosinophilia immunology
Eosinophilia pathology
Female
Horse Diseases etiology
Horse Diseases pathology
Horses
Immunohistochemistry veterinary
Intestinal Mucosa immunology
Intestinal Mucosa pathology
Leukocyte Count veterinary
Male
Enteritis veterinary
Eosinophilia veterinary
Horse Diseases immunology
Subjects
Details
- Language :
- English
- ISSN :
- 0425-1644
- Volume :
- 40
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Equine veterinary journal
- Publication Type :
- Academic Journal
- Accession number :
- 18487106
- Full Text :
- https://doi.org/10.2746/042516408X284646