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Abstract

The aim herein was to evaluate the effects of the induction of parturition using repeated low doses of dexamethasone in cattle. A total of 28 Simmental cows were used for the induction of parturition (n=20) or served as controls (n=8). Parturition was induced by a 1.6-mg intramuscular (IM)...

Author(s)
Salar, S.; Kanca, H.; Ateș, F. B.; Baștan, A.
Publisher
TÜBİTAK, Ankara, Turkey
Citation
Turkish Journal of Veterinary & Animal Sciences, 2019, 43, 4, pp 507-515
Abstract

Background: The absence of virus expression during the chronic stage of bovine leukemia virus (BLV) infection and its reactivation upon ex vivo culture has become a long-lived Dogma. During the chronic stage of BLV infection the immune response limits viral replication and the mitotic division of...

Author(s)
Jaworski, J. P.; Petersen, M. I.; Carignano, H. A.; Trono, K. G.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Veterinary Research, 2019, 15, 150, pp (16 May 2019)
Abstract

To evaluate the effect of administration of insulin and/or dexamethasone during early lactation on reproductive performance of dairy cows in a randomized controlled clinical trial, two hundred Holstein cows in a commercial dairy farm were enrolled in this study. The cows were randomly assigned to...

Author(s)
Sami, M.; Farzaneh, N.; Mohri, M.; Seifi, H. A.
Publisher
École Nationale Vétérinaire de Toulouse, Toulouse, France
Citation
Revue de Médecine Vétérinaire, 2017, 168, 1/3, pp 2-8
Abstract

Previously we had reported that exposure to high levels of glucocorticoids, and to unopsonized Mycoplasma bovis, has a negative interactive effect on bovine neutrophil function in vitro, and this interactive effect was a function of M. bovis strain differences. Here we hypothesized that in vitro...

Author(s)
Alabdullah, H. A.; Fox, L. K.; Gay, J. M.; Barrington, G. M.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Immunology and Immunopathology, 2018, 196, pp 18-21
Abstract

The objectives of this study were to determine the role of glucocorticoids in the regulation of prolactin (PRL) release induced by mammary gland stimulation and to investigate whether the milk depression induced by glucocorticoids in dairy cows is due to a decrease in PRL release. In experiment 1,...

Author(s)
Ponchon, B.; Zhao, X.; Ollier, S.; Lacasse, P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 2, pp 1521-1534
Abstract

It is well established that exposure either to elevated levels of glucocorticoids, or to Mycoplasma bovis (M. bovis), has a negative effect on bovine neutrophil function. The objective of this research was to determine whether in vitro treatment of bovine neutrophils by M. bovis strains (n=4) and...

Author(s)
Alabdullah, H. A.; Fox, L. K.; Gay, J. M.; Barrington, G. M.; Mealey, R. H.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Immunology and Immunopathology, 2015, 164, 1/2, pp 67-73
Abstract

The liver becomes resistant to growth hormone before parturition in dairy cows (uncoupling of the somatotropic axis). However, the mechanism of growth hormone insensitivity has not been fully described. The aim of the present study was to improve a previous model of adult bovine hepatocytes in a...

Author(s)
Witte, S.; Brockelmann, Y.; Haeger, J. D.; Schmicke, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 8, pp 7522-7535
Abstract

This study was conducted to detect the protein expression of TNF-α system members (TNF-α/TNFR1/TNFR2) in bovine ovarian follicles and to evaluate the effects of TNF-α or dexamethasone on the survival and growth of primordial follicles in vitro, as well as on gene expression in cultured ovarian...

Author(s)
Silva, A. W. B.; Ribeiro, R. P.; Menezes, V. G.; Barberino, R. S.; Passos, J. R. S.; Dau, A. M. P.; Costa, J. J. N.; Melo, L. R. F.; Bezerra, F. T. G.; Donato, M. A. M.; Peixoto, C. A.; Matos, M. H. T.; Gonçalves, P. B. D.; Hurk, R. van den; Silva, J. R. V.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2017, 182, pp 56-68
Abstract

When cows are unable to consume enough feed to support milk production, they often fall into severe negative energy balance. This leads to a weakened immune system and increases their susceptibility to infectious diseases. Reducing the milk production of cows subjected to acute nutritional stress...

Author(s)
Ollier, S.; Beaudoin, F.; Vanacker, N.; Lacasse, P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 12, pp 9949-9961
Abstract

Following acute infection of mucosal surfaces by bovine herpesvirus 1 (BoHV-1), sensory neurons are a primary site for lifelong latency. Stress, as mimicked by the synthetic corticosteroid dexamethasone, consistently induces reactivation from latency. Two viral regulatory proteins (VP16 and bICP0)...

Author(s)
Guo JunQing; Li QingMei; Jones, C.
Publisher
Springer, New York, USA
Citation
Journal of Neurovirology, 2019, 25, 1, pp 42-49

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