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Updated: Oct 29, 2025

Isolation of Peritoneum-derived Mast Cells and Their Functional Characterization with Ca2+-imaging and Degranulation Assays
Published on: July 4, 2018
Epidermal Mast Cells in the Cat
1Department of Clinical Sciences, New York State College of Veterinary Medicine, Cornell University, Ithaca, New York, U.S.A.
Abstract:
Abstract- Mast cells were found in the surface epidermis and outer root sheath epithelium in 37 of 338 cats (11.6 per cent) with non-neoplastic skin disorders. Epidermal mast cells were most commonly found in the eosinophilic plaque and the eosinophilic granuloma. Thevast majority of dermatoses wherein epidermal mast cells were found were characterised by: (1) a presumed immune-mediated pathogenesis, and (2) tissue eosinophilias. Résumé- Des mastocytes ont été observés dans l'épiderme superficiel ainsi que dans l'épithélium folliculaire chez 37 chats parmi 338 (11,6%) atteints de dermatoses non néoplasiques. Les mastocytes épidermiques ont été le plus souvent trouvés dans la plaque éosinophilique et le granulome éosinophilique. La grande majorité des dermatoses présentant des mastocytes épidermiques était caractérisée par: (1) la présomption d'une pathogénie immunodépendante et (2) une éosinophilie tissulaire. Zusammenfassung- Mastzellen konnten in der oberflächlichen Epidermis und in den Epithelien der äußeren Wurzelscheide bei 37 von 338 untersuchten Katzen (11.6%) mit nicht-neoplastischen Plaques oder eosinophilem Granulom gefunden werden. Die überwiegende Zahl der Dermatosen, bei denen epidermale Mastzellen auftraten, war durch die beiden Kriterien 1) vermutlich immunvermittelte Pathogenese und 2) Gewebs-Eosionophilie charakterisiert. Resumen En el presente trabajo se describe la presencia de mastocitos en la epidermis superficial y en la vaina folicular externa de 37 gatos de 338 examinados (11,6%) ninguno de los gatos examinados padecia enfermedades neoplásicas. Los mastocitos epidérmicos fueron más frecuentes en animates que padecian placas eosinofilicas y granulomas eosinofilicos. La gran mayoría de las dermatosis en las cuales se detectan mastocitos epidérmicos cuales se se caracterizan por: 1. Una posible patogenia inmunomediada y 2. eosinofilia tisular.
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