Exfoliation rate of mammary epithelial cells in milk on bovine mastitis caused by Staphylococcus aureus is associated with bacterial load
| Autor: | Yoshio Kiku, Kazue Sugawara, Tomohito Hayashi, Yuya Nagasawa, Fuyuko Tanabe |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Staphylococcus aureus 040301 veterinary sciences Somatic cell Biology medicine.disease_cause Microbiology 0403 veterinary science 03 medical and health sciences Mammary Glands Animal fluids and secretions Milk yield medicine Animals Lactation Mastitis Bovine food and beverages Epithelial Cells 04 agricultural and veterinary sciences General Medicine Staphylococcal Infections medicine.disease Exfoliation joint Bacterial Load Mastitis Milk 030104 developmental biology Cattle Female General Agricultural and Biological Sciences Somatic cell count |
| Zdroj: | SC10201804160231 NARO成果DBa C10201802090003_3670.pdf |
| ISSN: | 1344-3941 |
| DOI: | 10.1111/asj.12886 |
| Popis: | The exfoliation rate of mammary epithelial cells (MECs) in milk is affected by physiological, breeding and environmental factors. Little is known about the relationship between the MEC exfoliation into milk and mammary-infected Staphylococcus aureus (S. aureus) load on bovine mastitis caused by S. aureus. The aim of this study was to investigate the relationship between S. aureus load and the proportion of MEC exfoliation in milk using five substantial bovine mastitis models. In 64 randomly extracted milk samples from udders at 3-21 days after S. aureus infusion, there were various samples with different numbers of S. aureus counts and somatic cell counts. No significant correlations were found between the S. aureus counts and somatic cell count (r = 0.338). In contrast, a significant correlation was noted between S. aureus counts and the proportion of cytokeratin-positive cells in the milk from the infused udders (r = 0.734, P < 0.01). In conclusion, the increasing MEC exfoliation rate in milk from mastitis udders caused by S. aureus may contribute to reduced milk yield. |
| Databáze: | OpenAIRE |
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