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Expression of p53 protein, Jaagsiekte sheep retrovirus matrix protein, and surfactant protein in the lungs of sheep with pulmonary adenomatosis.

Authors
  • İlhan, Fatma1
  • Vural, Sevil A2
  • Yıldırım, Serkan2
  • Sözdutmaz, İbrahim2
  • Alcigir, Mehmet E2
  • 1 Department of Pathology, Faculty of Veterinary Medicine, Yuzuncu Yıl University, Van, Turkey (İlhan, Yıldırım)Department of Pathology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey (Vural, Alcigir)Department of Virology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey (Sözdutmaz) [email protected] , (Turkey)
  • 2 Department of Pathology, Faculty of Veterinary Medicine, Yuzuncu Yıl University, Van, Turkey (İlhan, Yıldırım)Department of Pathology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey (Vural, Alcigir)Department of Virology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey (Sözdutmaz). , (Turkey)
Type
Published Article
Journal
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
Publication Date
May 01, 2016
Volume
28
Issue
3
Pages
249–256
Identifiers
DOI: 10.1177/1040638716636939
PMID: 27016721
Source
Medline
Keywords
License
Unknown

Abstract

Ovine pulmonary adenocarcinoma (OPA) is a naturally occurring cancer in sheep that is caused by the Jaagsiekte sheep retrovirus (JSRV). Because the pathologic and epidemiologic features of OPA are similar to those of bronchoalveolar carcinoma in humans, OPA is considered a useful animal model for pulmonary carcinogenesis. In this study, 3,512 lungs from various breeds of sheep were collected and macroscopically examined. OPA was identified in 30 sheep, and samples of these animals were further examined by histologic, immunohistochemical (p53 protein, surfactant protein A [SP-A], proliferating cell nuclear antigen [PCNA], JSRV matrix protein [MA]), and PCR methods. Papillary or acinar adenocarcinomas were detected microscopically in the affected areas. Immunoreactivity for p53 PAb240 was detected in 13 sheep, whereas p53 DO-1 was not detected in any of the OPA animals. PCNA immunoreactivity was recorded in 27 animals. SP-A and JSRV MA protein was immunopositive in all 30. JSRV proviral DNA was detected by PCR analysis in all of the lung samples collected from OPA animals. In addition, the pulmonary SP-A levels were increased in tumor cells. The results of this study suggest that PCNA and p53 protein expression may be useful indicators in monitoring malignancy of pulmonary tumors.

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