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Adherence as a Prerequisite for Infection of the Bovine Mammary Gland by Bacteria
Adhesion (vidhäftning) som en förutsättning för bakteriell bovin mastit
Acta Veterinaria Scandinavica volume 22, pages 109–117 (1981)
Abstract
Using a simple in vitro test it was demonstrated that staphylococci, Streptococcus agalactiae, and micrococci, the species of bacteria which are commonly isolated from udder infections, adhered to mammary gland epithelial cells readily and in large numbers. Some strains of organisms which are associated with sporadic outbreaks or occur less commonly, like Str. dysgalactiae and Str. uberis, adhered moderately. Escherichia coli, Klebsiella spp., Corynebacterium pyogenes, C. bovis, Str. bovis, and Str. faecalis, species which are isolated occasionally, adhered poorly. From these studies, it appears that selective adherence of bacteria to the epithelial cells is a factor contributing to the ability of organisms to infect the mammary gland and may, therefore, be considered an important stage in the pathogenesis of bovine mastitis.
Sammanfattning
Genom att använda en enkel in vitro test kan man demonstrera hur stafylokocker, Str. agalactiae, mikrokocker och andra bakterier som ofta påträffas vid bovin mastit „fastnar“ på juverepitelceller. Antalet bakterier som fastnar på epitelcellarna varierar emellertid. Bakterier av de förutnämnda arterna fastnar ofta i stort antal. Bakterier som ses vid mer sporadiskt inträffade mastiter (t ex Str. dysgalactiae och Str. uberis) fastnar däremot i mindre antal. E. coli, Klebsiella, C. pyogenes, C. bovis, Str. bovis och Str. faecalis slutligen fastnar endast i ringa antal. Det tycks som om den selektiva adhesionen är en betydelsefull faktor för bakteriens förmåga att framkalla mastit. Den kan därför tänkas bidraga tili en ökad förståelse av den bovina mastitens patogenes.
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Wanasinghe, D.D. Adherence as a Prerequisite for Infection of the Bovine Mammary Gland by Bacteria. Acta Vet Scand 22, 109–117 (1981). https://doi.org/10.1186/BF03547212
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DOI: https://doi.org/10.1186/BF03547212