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Vet Pathol 44:943-948 (2007)
© 2007 American College of Veterinary Pathologists
BRIEF COMMUNICATIONS AND CASE REPORTS

Immunohistochemical Demonstration of the Putative Canine Distemper Virus Receptor CD150 in Dogs with and without Distemper

N. Wenzlow, P. Plattet, R. Wittek, A. Zurbriggen and A. Gröne

Institut für Tierpathologie, Vetsuisse Fakultät der Universität Bern, Switzerland (NW), Neurocenter, Vetsuisse Fakultät der Universität Bern, Switzerland (PP, AZ), Institut de Biotechnologie, Université de Lausanne, Switzerland (RW), and Department of Pathobiology, Utrecht University, Utrecht, the Netherlands (AG)

Abstract

Signaling lymphocyte activation molecule (SLAM) or CD150 can function as a receptor for the canine distemper virus (CDV) in vitro. The expression of SLAM was studied using immunohistochemistry in order to evaluate the presence and distribution of the receptor in dogs in vivo. Additionally, receptor expression was assessed after experimental infection of dogs with CDV. In 7 control dogs without distemper virus, the receptor was found in various tissues, mostly on cells morphologically identified as lymphocytes and macrophages. In 7 dogs with early distemper lesions characterized by presence of the virus, higher numbers of SLAM-expressing cells were found in multiple tissues recognized as targets of CDV compared with those in control dogs. These findings suggest that SLAM, a putative distemper receptor, is expressed in dogs in vivo. Additionally, virus infection is associated with up-regulation of SLAM, potentially causing an amplification of virus in the host.

Key words: Canine distemper; CD150; dogs; SLAM.

Request reprints from A. Gröne, Department of Pathobiology, Utrecht University, Yalelaan 1, 3584 CL, Utrecht (the Netherlands). E-mail: a.groene{at}uu.nl




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S. Kapil, R. W. Allison, L. Johnston III, B. L. Murray, S. Holland, J. Meinkoth, and B. Johnson
Canine Distemper Virus Strains Circulating among North American Dogs
Clin. Vaccine Immunol., April 1, 2008; 15(4): 707 - 712.
[Abstract] [Full Text] [PDF]


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