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Genetic typing of Croatian bovine viral diarrhea virus isolates (CROSBI ID 186362)

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Bedeković, Tomislav ; Lojkić, Ivana ; Lemo, Nina ; Čač, Željko ; Cvetnić, Željko ; Lojkić, Mirko ; Madić Josip Genetic typing of Croatian bovine viral diarrhea virus isolates // Veterinarski arhiv, 82 (2012), 5; 449-462

Podaci o odgovornosti

Bedeković, Tomislav ; Lojkić, Ivana ; Lemo, Nina ; Čač, Željko ; Cvetnić, Željko ; Lojkić, Mirko ; Madić Josip

engleski

Genetic typing of Croatian bovine viral diarrhea virus isolates

Between 2007 and 2011, a total of 1937 sera samples and five spleen samples from nine Croatian dairy herds were tested for the bovine viral diarrhea virus (BVDV) using virus isolation and the immunoperoxidase test. BVDV was detected in 13 persistently infected (PI) cattle with a non-cytopathogenic biotype, while in five animals with fatal mucosal disease, isolates from spleen samples were of the cytopathogenic biotype. To reveal the genetic typing of Croatian BVDV isolates, viral RNA was extracted from infected cell cultures and amplified by RT-PCR, with primers targeting the 5’-UTR and the Npro gene, followed by direct sequencing of purified PCR products. Sequence and phylogenetic analysis of the 5’-UTR genome region determined that all Croatian isolates belonged to BVDV genotype 1 ; 11 isolates were grouped with BVDV-1b and 7 with BVDV-1f viruses. The phylogenetic tree inferred by the Bayesian approach, using combined 5’-UTR/Npro, supported clustering of Croatian isolates in two subgroups. The deduced aminoacid sequence of the Npro region revealed 5 sites unique for four domestic BVDV-1f isolates.

BVDV; imunoperoxidase test; Npro; phylogenetic analysis

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Podaci o izdanju

82 (5)

2012.

449-462

objavljeno

0372-5480

1331-8055

Povezanost rada

Veterinarska medicina

Poveznice