2005
DOI: 10.1111/j.1439-0450.2005.00882.x
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Changes in Peripheral Blood Leucocyte Counts and Subpopulations after Experimental Infection with BVDV and/orMannheimia haemolytica

Abstract: Leucocyte counts and subpopulations were studied in peripheral blood from calves experimentally infected in the respiratory tract with either bovine virus diarrhoea virus (BVDV) or Mannheimia haemolytica (Mh), or with a combination of both agents (BVDV/Mh). A non-inoculated control group was included. Peripheral blood samples were obtained for total leucocyte counts, and for neutrophil, lymphocyte and monocyte counts. The numbers of blood lymphocytes expressing the surface antigens CD4, CD8, WC1, B and IL-2R w… Show more

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Cited by 26 publications
(30 citation statements)
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“…Previous studies have shown that peripheral blood monocytes are not appreciatively depleted during BVDV infection (Ellis et al, 1988;Gånheim et al, 2005;Molina et al, 2013). In the present study, lymphopenia was observed in calves infected with high or low virulence BVDV2 strains.…”
Section: Circulating Monocytes Are Not Depleted In Calves Infected Wicontrasting
confidence: 64%
“…Previous studies have shown that peripheral blood monocytes are not appreciatively depleted during BVDV infection (Ellis et al, 1988;Gånheim et al, 2005;Molina et al, 2013). In the present study, lymphopenia was observed in calves infected with high or low virulence BVDV2 strains.…”
Section: Circulating Monocytes Are Not Depleted In Calves Infected Wicontrasting
confidence: 64%
“…Generally, cattle and sheep are more susceptible to clinical disease induced by BVDV than pigs that often displayed only viral shedding and seroconversion (Castrucci et al, 1973;Makoschey et al, 2002;Rypuła, 2003;Walz et al, 2004). Intra-nasal administration of low-virulence BVDV to immunocompetent nonpregnant ruminants resulted in mild disease, which was characterised by moderate leukopenia and fever, respiratory distress and/or enteric signs (Potgieter et al, 1984;Wilhelmsen et al, 1990;Sandvik et al, 1997;Archambault et al, 2000;Baule et al, 2001;Liebler-Tenorio et al, 2003;Gå nheim et al, 2005). In contrast, more severe clinical signs were observed in nonpregnant cattle experimentally infected with thrombocytopenic BVDV-2 strains (Odeó n et al, 1999;Walz et al, 1999;Hamers et al, 2000;Liebler-Tenorio et al, 2002;Falcone et al, 2003).…”
Section: Discussionmentioning
confidence: 99%
“…In a BVDV type 2 challenge, Kelling et al (2007) reported that nonvaccinated animals had greater rectal temperatures on d 9 to 11 after intranasal challenge compared with a vaccinated group. Calves challenged with noncytopathic type 1 BVDV (Gånheim et al, 2005) had a mild fever (>39.5°C) from d 1 through 5 after viral inoculation compared with nonchallenged controls. These results suggest that rumen temperature measurements are capable of detecting temperature changes in response to both MH and BVDV challenges similar to those that have been reported for rectal temperature.…”
Section: Figurementioning
confidence: 96%