Clinical and histological characterization of hair coat and glandular tissue of Chinese crested dogs.

Wiener, Dominique Judith; Gurtner, Corinne; Panakova, Lucia; Mausberg, Theresa-Bernadette; Müller, Eliane Jasmine; Drögemüller, Cord; Leeb, Tosso; Welle, Monika Maria (2013). Clinical and histological characterization of hair coat and glandular tissue of Chinese crested dogs. Veterinary dermatology, 24(2), 274-e62. Blackwell Science 10.1111/vde.12008

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BACKGROUND Two varieties exist in the Chinese crested dog breed, namely hairless Chinese crested dogs presenting with hypotrichosis and dentition abnormalities, and the coated powderpuffs. Hairless Chinese crested dogs are obligate heterozygotes for a FOXI3 mutation, and this phenotype is classified as a form of canine ectodermal dysplasia. OBJECTIVES We provide a detailed histological description of hair follicles and their density for the three subphenotypes (true hairless, semi-coated and powderpuffs) of Chinese crested dogs. Apocrine and exocrine glands of the skin and other tissues were compared with findings reported from dogs with X-linked ectodermal dysplasia. ANIMALS Skin biopsies were collected from 22 Chinese crested dogs. Additionally, the glands of the skin and other tissues were examined from another two dogs available for postmortem examination. METHODS Skin biopsies and tissues were processed, stained and evaluated in a blinded fashion. RESULTS Hair follicular anomalies decreased with increasing number of hairs in the different phenotypes. The FOXI3 mutants had only simple primary hair follicles, whereas the nonmutant powderpuffs had compound follicles identical to other dog breeds. All Chinese crested dogs had an anagen-dominated hair cycle. Furthermore, apocrine glands in the skin and respiratory mucous glands of the mutant Chinese crested dogs were present and normal. CONCLUSIONS AND CLINICAL IMPORTANCE We have identified striking histopathological differences between the three subphenotypes of Chinese crested dogs. We clearly demonstrated distinct differences between the canine ectodermal dysplasia in Chinese crested dogs and dogs with X-linked ectodermal dysplasia.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > DermFocus
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Animal Pathology
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Genetics
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)

UniBE Contributor:

Wiener, Dominique Judith; Gurtner, Corinne; Mausberg, Theresa-Bernadette; Müller, Eliane Jasmine; Drögemüller, Cord; Leeb, Tosso and Welle, Monika Maria

Subjects:

600 Technology > 630 Agriculture
500 Science > 590 Animals (Zoology)

ISSN:

0959-4493

Publisher:

Blackwell Science

Language:

English

Submitter:

Susanne Portner

Date Deposited:

06 Aug 2014 17:11

Last Modified:

12 Feb 2015 13:22

Publisher DOI:

10.1111/vde.12008

PubMed ID:

23413772

BORIS DOI:

10.7892/boris.43886

URI:

https://boris.unibe.ch/id/eprint/43886

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