نتایج جستجو برای: bovine leukemia virus blv
تعداد نتایج: 717965 فیلتر نتایج به سال:
Bovine Leukemia ProVirus: Evidence of Presence of Part of Gag Gene in Seminal Plasma of Naturally Infected Bulls It is of critical importance to understand the modalities of BLV presence in semen, especially with regard to artificial insemination (AI). Presence of bovine leukemia provirus was demonstrated in fresh and frozen semen samples by researchers. In this study paired blood and semen sam...
bovine leukemia provirus: evidence of presence of part of gag gene inseminal plasma of naturally infected bullsit is of critical importance to understand the modalities of blv presence in semen, especially with regard to artificial insemination (ai). presence of bovine leukemia provirus was demonstrated in fresh and frozen semen samples by researchers. in this study paired blood and semen sampl...
ویروس لوسمی گاو (bovine leukemia virus )از جنس دلتا رترویروس وخانواده رتروویر یده واجد سه 3 ژن ساختمانی اصلی gag,pol,env می باشد. به منظور ردیابی پروویروس blv در گاوهای آلوده به این ویروس و مقایسه دو روش الایزا و pcr در تشخیص آزمایشگاهی بیماری در ایران این مطالعه در دو مرحله روی 200 نمونه خون کامل و سرم اخذ شده از گاوهای بالای دوسال در بعضی از نقاط کشور انجام گرفت . در مرحله اول نمونه های سرم ب...
ویروس لوسمی گاو (Bovine Leukemia Virus )از جنس دلتا رترویروس وخانواده رتروویر یده واجد سه 3 ژن ساختمانی اصلی gag,pol,env می باشد. به منظور ردیابی پروویروس BLV در گاوهای آلوده به این ویروس و مقایسه دو روش الایزا و PCR در تشخیص آزمایشگاهی بیماری در ایران این مطالعه در دو مرحله روی 200 نمونه خون کامل و سرم اخذ شده از گاوهای بالای دوسال در بعضی از نقاط کشور انجام گرفت . در مرحله اول نمونه های سرم ب...
Bovine Leukemia Virus (BLV) is a deltaretrovirus closely related to the Human T-cell leukemia virus-1 (HTLV-1). Cattle are the natural host of BLV where it integrates into B-cells and produces a lifelong infection. Most infected animals remain asymptomatic but following a protracted latency period about ~5% develop an aggressive leukemia/lymphoma, mirroring the disease trajectory of HTLV-1. The...
Spleen tyrosine kinase (Syk) is closely related to various cell reactions. In B-cells, Syk is involved in early B-cell receptor signaling, which affects cellular survival, proliferation and differentiation. Although the kinetics of Syk mRNA and its activity are variable in different types of tumor cells, Syk may have a relation to tumor progression in many human tumors, including B-cell lymphom...
Programmed death-1 (PD-1), an immunoinhibitory receptor on T cells, is known to be involved in immune evasion through its binding to PD-ligand 1 (PD-L1) in many chronic diseases. We previously found that PD-L1 expression was upregulated in cattle infected with bovine leukemia virus (BLV) and that an antibody that blocked the PD-1/PD-L1 interaction reactivated T-cell function in vitro. Therefore...
The DNA from 17 lymphoid tumors induced by bovine leukemia virus (BLV) was digested with the restriction endonuclease EcoRI. Filter hybridization analysis using radioactive probes specific for the BLV genome showed that all tumors contained at least one or a portion of one provirus. Digestion of these proviruses with Sac I demonstrated that deletions occurred in about 25% of the cases and invol...
This cross-sectional study evaluated risk factors associated with farm-level bovine leukemia virus (BLV) seropositivity in 563 dairy and 490 beef farms throughout Japan. Twenty randomly selected cattle on each farm were serologically tested, and farm epidemiologiocal information was obtained through face-to-face interviews. Due to the large number of zero-prevalence dairy and beef farms, data a...
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