Effect of heat stress on the interaction of Streptococcus uberis with bovine mammary epithelial cells

Heat stress (HS) negatively affects milk production and has been associated with decreased immune function, and increased rate of intramammary infections (IMI). Research has shown that HS affects gene expression, cell cycle, and cell metabolism in bovine mammary epithelial cells (BMEC). Since BMEC a...

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Veröffentlicht in:Journal of dairy research 2018-02, Vol.85 (1), p.53-56
Hauptverfasser: Almeida, Raúl A, Kerro-Dego, Oudessa, Rius, Agustín G
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creator Almeida, Raúl A
Kerro-Dego, Oudessa
Rius, Agustín G
description Heat stress (HS) negatively affects milk production and has been associated with decreased immune function, and increased rate of intramammary infections (IMI). Research has shown that HS affects gene expression, cell cycle, and cell metabolism in bovine mammary epithelial cells (BMEC). Since BMEC are an initial target of mastitis pathogens, we studied adherence to and internalisation of S. uberis into HS-BMEC, as well as the effect that this interaction has on host cells by measuring HS-BMEC viability and membrane integrity. Results reported in this Research Communication showed that HS reduced cell viability and induced membrane damage. However, these pathological changes, as well as the rate of adherence and internalisation of S. uberis into BMEC, were augmented when S. uberis was cocultured with HS-BMEC. These results may help to understand the pathogenesis of S. uberis IMI as well as the increased susceptibility of mammary glands to IMI in cows subjected to HS.
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subjects Animals
Cattle
Cell cycle
Cell interactions
Cell Line
Cell Survival
Coculture Techniques
Epithelial cells
Epithelial Cells - microbiology
Female
Gene expression
Glands
Heat
Heat stress
Heat tolerance
Hot Temperature
Immune response
Immune system
Infections
Kinases
Mammary gland
Mammary glands
Mammary Glands, Animal - cytology
Mastitis
Metabolism
Milk production
Pathogenesis
Pathology
Phosphorylation
Software
Streptococcus
Streptococcus - classification
Streptococcus - physiology
title Effect of heat stress on the interaction of Streptococcus uberis with bovine mammary epithelial cells
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