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Mast Cell Distribution at Predilection Sites of Atopic Dermatitis in Normal Canine Skin  

Yi Seong-Joon (Department of Veterinary Anatomy, College of Veterinary Medicine, Kyungpook National University)
Jeong A-Young (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Oh Tae-Ho (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Publication Information
Journal of Veterinary Clinics / v.22, no.3, 2005 , pp. 181-185 More about this Journal
Abstract
Mast cell distribution was quantified in acidified toluidine blue sections of normal skin from 8 different sites in 10 dogs and compared to the predilection sites of canine atopic dermatitis. Mast cell counts varied significantly from site to site (p<0.0001) and counts in the superficial dennis were significantly higher than the deeper dennis (p<0.05). The highest mast cells distribution sites were the concave surface of the ear (mean $74.88{\pm}17.93\;per\;mm^{2}$) and the interdigital skin of the forefeet (mean $28.326{\pm}6.24\;per\;mm^{2}$). Counts in these sites were $280\%$ higher than all the other sites. Our results may provide some evidence that cutaneous mast cell distribution may be a factor in the frequent occurrence of ear and foot pruritus in atopic dermatitis. However, the low mast cell count in the predilection sites of atopic dermatitis did not explain the common occurrence of atopic lesions. Therefore, other factors or more complicated pathogenesis may be correlated with these predilection sites.
Keywords
mast cell; atopy; dermatitis; dog;
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