Pcr studies on the potential sites for latency of BHV-4 in calves |
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| Authors: | Egyed L Bartha A |
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| Institution: | (1) Veterinary Medical Research Institute of the Hungarian Academy of Sciences, H-1581 Budapest, PO Box 18, Hungary |
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| Abstract: | The aim of the study was to examine various tissues of experimentally infected calves for the BHV-4 genome so as to detect in which cells the virus persists during the latent phase of the infection. The presence of the bovine herpesvirus type 4 genome was detected by a nested PCR in a variety of tissues collected from two susceptible calves experimentally infected 62 days earlier. Mild clinical signs of bronchitis, an elevated body temperature for 2–3 days, and a slightly increased number of blood leukocytes were observed in both inoculated calves. BHV-4 was demonstrated in seven samples from the 12 different parts of the nervous system tested from each calf (29.1%), from the cornea, from lymph nodes near to the inoculation site, from the gallbladder and from the bone marrow. Thus a member of the predominantly lymphotropic Gammaherpesvirinae subfamily was detected in neural tissue and other organs that have never been associated with persistence. |
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| Keywords: | bone marrow bovine herpesvirus type 4 calves conjunctiva cornea latency nervous tissue PCR |
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