N. Diniz, T.C. Melo, J.F. Santos, E. Mori, P.E. Brandão, L.J. Richtzenhain, A.C. Freitas, W. Beçak, R.F. Carvalho, R.C. Stocco
Published: December 15, 2009
Genet. Mol. Res. 8 (4) : 1474-1480
DOI: https://doi.org/10.4238/vol8-4gmr668
Cite this Article:
N. Diniz, T.C. Melo, J.F. Santos, E. Mori, P.E. Brandão, L.J. Richtzenhain, A.C. Freitas, W. Beçak, R.F. Carvalho, R.C. Stocco (2009). Simultaneous presence of bovine papillomavirus in blood and in short-term lymphocyte cultures from dairy cattle in Pernambuco, Brazil. Genet. Mol. Res. 8(4): 1474-1480. https://doi.org/10.4238/vol8-4gmr668
About the Authors
N. Diniz, T.C. Melo, J.F. Santos, E. Mori, P.E. Brandão, L.J. Richtzenhain, A.C. Freitas, W. Beçak, R.F. Carvalho, R.C. Stocco
Corresponding author
R.C. Stocco
E-mail: ritastocco@butantan.gov.br or ritastocco@yahoo.com
ABSTRACT
Bovine papillomaviruses (BPV) are the causal agents of benign and malignant lesions; they can cause dramatic economic losses in cattle. Although 10 virus types have been described, three types are most common in tumors, namely BPV-1, -2 and -4. Previous studies have reported BPV in blood cells and the possibility of blood acting as a latent virus site and/or transmission agent of virus dissemination. We studied a Holstein dairy herd in Pernambuco, Brazil, in which several animals showed severe cutaneous papillomatosis, without previous determination of BPV types. Blood samples and short-term lymphocyte cultures were collected from 54 cows. We compared the BPV types detected in peripheral blood to those identified in the respective lymphocyte cultures: BPV-1 was detected in 74% and BPV-2 in 87% of the whole blood samples. Simultaneous virus presence (BPV-1 and BPV-2) was found in 65% of the blood samples. BPV-1 or BPV-2 were detected in the lymphocyte cultures in 93% of the samples, and both in 89%. The detection of viral DNA in whole blood and in lymphocyte cultures is evidence that this virus is carried by lymphocytes.
Key words: Bovine papillomavirus, cutaneous papillomatosis.