Secondary Staphylococcus aureus intramammary colonization is reduced by non-aureus staphylococci exoproducts |
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| Institution: | 1. Département de Biologie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, QC, J1K 2R1, Canada;2. Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada;3. Canadian Mastitis Network and Regroupement de Recherche pour Un Lait de Qualité Optimale (Op+lait), St-Hyacinthe, QC, J2S 2M2, Canada;1. Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601, X5804ZAB Río Cuarto, Córdoba, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina;1. Laboratorio de Inmunoquímica y Biotecnología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Buenos Aires, Argentina;2. Servicio Bacteriología, Departamento Laboratorio del Instituto Nacional de Epidemiología “Dr. Juan H. Jara” (INE), Administración Nacional de Laboratorios e Institutos de Salud “Dr. Carlos G. Malbrán” (ANLIS), Ministerio de Salud de la Nación, Argentina;3. Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile;1. Department of Blood Transfusion, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China;2. The Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China;3. Department of Intensive Care Unit, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China;1. Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China;2. Hospital of Stomatology, Jilin University, Changchun 130021, China;3. Shandong Jinzhuji Pharmaceuticals Co. Ltd., Jinan 271100, Shandong, China;1. Laboratório de Genética Molecular e Citogenética, Departamento de Genética, Instituto de Ciências Biológicas I, Universidade Federal de Goiás, 74001-970, Goiânia, Goiás, Brazil;2. Universidade Federal Do Acre, Rodovia BR 364, Km 04 - Distrito Industrial, 69920-900, Rio Branco, Acre, Brazil;3. Departamento de Vigilância em Zoonoses, Secretaria Municipal de Saúde Goiânia, Rodovia Go-020 km 08, Val Das Pombas, 75250-000, Goiânia, Goiás, Brazil;4. Laboratório de Diagnóstico Genético e Molecular, Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas II, Universidade Federal de Goiás, 74001-970, Goiânia, Goiás, Brazil |
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| Abstract: | Non-aureus staphylococci (NAS) and Staphylococcus aureus are pathogens that cause bovine mastitis, a costly disease for dairy farmers, however; many NAS are considered part of the normal udder microbiota. It has been suggested that through a mechanism that remains to be elucidated, NAS intramammary colonization can prevent subsequent infection with other bacterial pathogens. This study shows that in a murine mastitis model, secondary Staph. aureus intramammary colonization is reduced by exoproducts from Staph. chromogenes and Staph. simulans, both NAS, while Streptococcus spp. exoproducts have much less ability to affect the course of the infection caused by S. aureus. |
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| Keywords: | Mastitis NAS CNS |
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