Open Access
Research (Published online: 10-07-2018)
5. Molecular detection and immunopathological examination of Deltapapillomavirus 4 in skin and udder of Egyptian cattle
Emad Beshir Ata, Mohamed Abd El-Fatah Mahmoud and A. A. Madboli
Veterinary World, 11(7): 915-920

Emad Beshir Ata: Department of Parasitology and Animal Diseases, Veterinary Research Division, National Research Center, 12622 Dokki, Giza, Egypt.
Mohamed Abd El-Fatah Mahmoud: Department of Parasitology and Animal Diseases, Veterinary Research Division, National Research Center, 12622 Dokki, Giza, Egypt.
A. A. Madboli: Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Center, 12622 Dokki, Giza, Egypt.

doi: 10.14202/vetworld.2018.915-920

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Article history: Received: 18-03-2018, Accepted: 29-05-2018, Published online: 10-07-2018

Corresponding author: Emad Beshir Ata


Citation: Ata EB, Mahmoud MAE,Madboli AA. (2018) Molecular detection and immunopathological examination of Deltapapillomavirus 4 in skin and udder of Egyptian cattle, Veterinary World, 11(7): 915-920.

Aim: Bovine papillomaviruses (BPVs) are the main cause of bovine papillomatosis resulting in cutaneous and/or mucosal benign tumors that could be transformed to malignant ones with marked economic importance, especially in the dairy farms. Molecular, pathological, and immunohistochemical (IHC) diagnosis of bovine papillomatosis cases was conducted to identify and characterize the circulating BPV genotype in some Egyptian governorates.

Materials and Methods: Wart-like lesions in skin, udder, and teats were collected from 123 infected cases in Giza, Beni Suef, and El Menoufia Governorates, Egypt, during 2016-2017. Pathological and IHC characterization, molecular identification, genotyping, and phylogenetic analysis based on the conserved late (L1) gene of the all samples were carried out.

Results: 89 of the 123 collected samples (72.3%) were positively detected by polymerase chain reaction (PCR). The sequence analysis of the obtained PCR amplicons was identical revealing identification and genotyping of only one type (Deltapapillomavirus 4 isolate EGY 2017) with accession number (MG547343) which found to be closely related to the recently detected Deltapapillomavirus 4 isolate 04_asi_UK (accession no. MF384288.1) and isolate Deltapapillomavirus 4 isolate 25_equ_CH (accession no. MF384286.1) with 99% nucleotide sequence identity. Histopathological examination revealed severe hyperkeratosis in stratum corneum and acanthosis in most of the cases. These tissue changes were confirmed by the presence of golden brown stained proliferating cell nuclear antigen which was localized intranuclear and perinuclear in other cells using IHC Technique.

Conclusion: It is the first time to detect and genotype the BPVs in these areas with no record of previous genotyping in the whole country. The obtained results will highlight the importance of this disease.

Keywords: bovine papillomaviruses, characterization, Egypt, genotyping, immunohistochemical, pathological, phylogeny.


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