Isolation and identification of bubaline herpesvirus 1 (BuHV-1) from latently infected water buffalo (Bubalus bubalis) from Iran

• Published in: Tropical animal health and production 2020, Vol.52 (1), p.217-226
• Main Authors: Hedayat, Negar, Haji Hajikolaei, Mohammad Rahim, Seyfi Abad Shapouri, Masoud Reza, Ghadrdan Mashhadi, Ali-Reza, Izadnia, Hamidreza, Daghari, Maryam
• Format: Article
• Language: English
• Subjects: Amino acids; Biomedical and Life Sciences; Bubalus bubalis; Buffalo; Cell culture; Dexamethasone; Genetic analysis; Genetic distance; Herpes viruses; Latent infection; Life Sciences; Neutralization; Nucleotide sequence; Nucleotides; Phylogeny; Primers; Regular Articles; Steroids; Vagina; Veterinary Medicine/Veterinary Science; Viruses; Zoology
• ISSN: 0049-4747; 1573-7438
• DOI: 10.1007/s11250-019-02007-9

In order to isolate buffaloes herpesvirus 1 (BuHV-1) from latently infected water buffalo ( Bubalus bubalis ), 16 buffalo heifers were selected from a herd. At first, animals were bled and their sera were tested by virus neutralization (VN) test, using bovine herpesvirus 1 (BoHV-1). According to the results of VN test and dexamethasone injection (0.1 mg/kg BW) for 5 consecutive days, the examined buffaloes were divided into 4 groups. Vaginal and nasal swabs were daily collected from all buffaloes from day 0 to 10 days later. Based on the cytopathic effects in cell culture, a herpesvirus was isolated only from nasal swabs of three seropositive buffaloes which they had received dexamethasone. The nasal swabs of these three buffaloes were also positive in PCR, using primers specific for ruminant herpesviruses gD gene. The identity of the isolated viruses was determined according to partial amino acid sequences of gD, deduced from the nucleotide sequences of the PCR products. On the basis of sequence alignment, phylogenetic analysis, and genetic distances, the three buffalo virus isolates were more closely related to BuHV-1 and BoHV-5 than to BoHV-1.