2001
DOI: 10.1046/j.1365-3083.2001.00994.x
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Morphologic and Functional Changes in Bovine Monocytes Infected In vitro with the Bovine Leukaemia Virus

Abstract: Experiments on the host cell spectrum of bovine leukaemia virus (BLV), a retrovirus closely related to the human T‐cell leukaemia virus (HTLV), have yielded conflicting data. Currently, BLV is known to infect B cells, whereas its ability to infect other cell types, e.g. monocytes/macrophages, is doubtful. As monocytes/macrophages may have profound effects on the diversity of the T‐cell response, we studied the possibility of in vitro infection, using bovine monocytes and SV40‐transformed bovine macrophages. Pr… Show more

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Cited by 12 publications
(8 citation statements)
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“…In line with this, monocytes isolated from AL cattle have significantly decreased phagocytic activity against E. coli when compared to monocytes from uninfected cattle (Werling et al, 1998). However, monocytes cultured in the presence of exogenous BLV do not exhibit altered surface expression of CD11b, CD32 or MHCII (Altreuther et al, 2001), indicating that deficiencies in monocyte or macrophage function are likely not a result of direct BLV infection within those cell types.…”
Section: Monocyte and Macrophage Abnormalitiessupporting
confidence: 52%
“…In line with this, monocytes isolated from AL cattle have significantly decreased phagocytic activity against E. coli when compared to monocytes from uninfected cattle (Werling et al, 1998). However, monocytes cultured in the presence of exogenous BLV do not exhibit altered surface expression of CD11b, CD32 or MHCII (Altreuther et al, 2001), indicating that deficiencies in monocyte or macrophage function are likely not a result of direct BLV infection within those cell types.…”
Section: Monocyte and Macrophage Abnormalitiessupporting
confidence: 52%
“…Estudos anteriores referiram alterações hematológicas (FETROW;FERRER, 1982;DOMÉNECH et al, 2000;BEYER et al, 2002) e imunitárias (ALTREUTHER et al, 2001;AZEDO et al, 2007, 2008a, 2008b dependentes do estágio ou da fase da LEB em que os animais infectados se encontram. A possibilidade dessas alterarem também a eficiência dos mecanismos de defesa da glândula mamária ou mesmo na interpretação de algumas provas diagnósticas trivialmente empregadas deve ser considerada e investigada.…”
Section: Leucose Enzoótica Bovinaunclassified
“…O VLEB afeta principalmente os linfócitos B (LETESSON et al, 1991;SCHWARTZ et al, 1994;HOF;DAVIS, 1995;WERLING et al, 1998;STONE et al, 2000) e seus mecanismos de proliferação (SCHWARTZ et al, 1994;MIRSKY et al, 1996;HOPKINS;DIGIACOMO, 1997;DOMÉNECH et al, 2000;ALTREUTHER et al, 2001;BUEHRING et al, 2003). A linfocitose de células B é resultante de uma porcentagem aumentada de linfócitos B CD5+ circulantes, associada a um menor, porém significativo, aumento da população de células CD5- (DEPELCHIN et al, 1989;LETESSON et al, 1990;.…”
Section: Leucose Enzoótica Bovinaunclassified
See 1 more Smart Citation
“…Muito embora tem sido relatado que o VLB possa persistir em outros tipos celulares (ROVNAK et al, 1991;STOTT et al, 1991;HEENEY et al, 1992;BUEHRING et al, 1994;DOMENECH et al, 2000;ALTREUTHER et al, 2001;WU et al, 2003), parece claro que, em bovinos e ovinos, o principal alvo do vírus seja um linfócito B que expressa sIgM (AIDA et al, 1989;AMANUMA, 1993;DA;VERNAU et al, 1997). Além desse marcador específico de linfócitos B, em ambas espécies as células infectadas frequentemente co-expressam a molécula CD5.…”
Section: Quantificação Das Su'bpopulações De Leucócitosunclassified