Open Access Association between Hair-Induced Oronasal Inflammation and Ulcerative Dermatitis in C57BL/6 Mice

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Abstract:

Ulcerative dermatitis (UD) is a genetically linked syndrome that affects the neck, torso, and facial regions of C57BL/6 mice and strains with C57BL/6 background. In this study, 96 mice with skin ulcerations in 3 different regions of the body and 40 control animals without ulcerated lesions were evaluated histologically for the presence of hair-induced inflammation in the oronasal cavity. We found that 73.5% (100 of 136) of the mice had hair-induced periodontitis, glossitis, or rhinitis regardless of the presence or absence of UD. Of those mice with UD, 93.9% had hair-induced oronasal inflammation. The mandibular incisors were the most commonly affected site (64.6%), followed by the maxillary molars (20.8%), maxillary incisors (16.7%), tongue (16.7%), nasal cavity (10.4%), and mandibular molars (7.3%). In addition, oronasal hair-induced inflammation occurred in 25% (10 of 40) of the control mice. Here we show a significant association between UD and hair-induced inflammatory lesions of the oronasal cavities.

Document Type: Research Article

Affiliations: 1: Division of Laboratory Animal Medicine, David Geffen School of Medicine, University of California—Los Angeles, Los Angeles, California;, Email: sandraduarte@mednet.ucla.edu 2: Division of Laboratory Animal Medicine, David Geffen School of Medicine, University of California—Los Angeles, Los Angeles, California

Publication date: February 1, 2011

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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