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Virus Res. 1999 Jun;61(2):171-5.

Bovine papillomaviral gene expression in equine sarcoid tumours.

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1
Department of Veterinary Clinical Studies, University of Glasgow Veterinary School, UK.

Abstract

The sarcoid is a benign locally invasive dermal fibroblastic lesion, commonly affecting horses and donkeys. The aetiology of the equine sarcoid is equivocal. Bovine papillomaviral (BPV) DNA (type 1/2) is frequently demonstrable in equine sarcoid tumour biopsies. However, the exact role of the virus in the disease process and its contribution to the phenotypic differences in sarcoids is not known. It was sought to assess the transcriptional activity of BPV-1 found in sarcoid tissues. Of 20 tumours examined, 18 were positive for E2 expression and ten positive for L1 expression. Viral oncogenes E5, E6 and E7 transcripts were detected in 16, nine and 12 tumours, respectively. This study demonstrates BPV gene expression in equine sarcoids and provide the first evidence for a direct involvement of the virus in the pathogenesis of sarcoids.

PMID:
10475087
[Indexed for MEDLINE]
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