The purpose of this study was to determine the prevalence of bovine leukemia virus (BLV) in Khorasan Razavi and Khorasan Shomali provinces which are the main provinces located in the northeast of Iran. Total number of 429 blood samples were collected from industrial dairy herds. The samples were categorized based on province, age (2-3, 4-6, and 7-10 years old), calving (≤ 2, 3-5, and > 5) and h...

CORINA MARCAUTEANU1, ENIKÖ TÜNDE STOICA1, CRISTINA BORTUN 2, MEDA-LAVINIA NEGRUTIU3, COSMIN SINESCU3*, ANCA TUDOR4 1 University of Medicine and Pharmacy “Victor Babeo” Timiooara, Faculty of Dentistry, Department of Occlusion, 9 Revolutiei Blv., 300070, Timiooara, Romania 2 University of Medicine and Pharmacy “Victor Babeo”, Faculty of Dentistry, Department of Dental Technology, Timiooara, 9 Rev...

The exchanges between sister chromatids were detected with the fluorescence plus Giemsa technique, in which the thymine analogue, bromodeoxyuridine, was used for DNA labelling. This method was used to examine the influence of bovine leukaemia virus on chromosomal disorders in bovine blood lymphocytes. In metaphasal chromosomes of BLV infected lymphocytes, numerous sister chromatid exchanges (SC...

Healthy ruminants carry intestinal Shiga toxin (Stx)-producing Escherichia coli (STEC). Stx has antiviral activities in vitro and STEC numbers correlate with reduced early viremia in sheep experimentally infected with bovine leukemia virus (BLV). This study assessed the impact of intestinal STEC on BLV-induced disease for one year post-BLV-challenge. High STEC scores (CFU/g feces x frequency of...

BACKGROUND Age, reproductive history, hormones, genetics, and lifestyle are known risk factors for breast cancer, but the agents that initiate cellular changes from normal to malignant are not understood. We previously detected bovine leukemia virus (BLV), a common oncogenic virus of cattle, in the breast epithelium of humans. The objective of this study was to determine whether the presence of...

Bovine leukemia virus (BLV) has spread worldwide and causes serious problems in the cattle industry owing to lack of effective treatments vaccines. BLV is transmitted via horizontal vertical infection, with high proviral load (PVL), which a useful index for estimating disease progression transmission risk, are considered major infectious sources within herds. PVL strongly correlates highly poly...

Various techniques for screening and detection of bovine leukemia virus (BLV) were compared to ascertain a rapid and simple technique for routine examination. The performance of real-time PCR, nested PCR and loop-mediated isothermal amplification (LAMP) assays was compared using DNA extracted from whole blood instead of white blood cells (WBCs) of 23 cattle. Real-time PCR, LAMP and nested PCR d...

Bovine leukemia virus (BLV) infection, endemic in North American dairy herds, has production-limiting effects. A literature review of available papers published since 1995 concerning BLV transmission and its control was conducted. Although confirmed routes were reviewed (blood, natural breeding, utero, colostrum, milk), there is still a lack detailed information on other specific risks for (e.g...

Abstract Introduction: Bovine leukemia virus (BLV) causes enzootic bovine leukemia, andis closely related to human T-lymphotropic virus type 1. It expresses microRNAs of unknown function and codes Tax, the protein that mediates malignant transformation. BLV is capable of infecting B- and T-lymphocytes, endothelial cells, and mammary epithelial cells of cattle. Several studies demonstrated the ...

Abstract Introduction: Bovine leukemia virus (BLV) causes enzootic bovine leukemia, andis closely related to human T-lymphotropic virus type 1. It expresses microRNAs of unknown function and codes Tax, the protein that mediates malignant transformation. BLV is capable of infecting B- and T-lymphocytes, endothelial cells, and mammary epithelial cells of cattle. Several studies demonstrated the ...