Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance
- Autores
- Srednik, Mariela Elizabeth; Grieben, Mario A.; Bentancor, Adriana Beatriz; Gentilini, Elida Raquel
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Introduction: Bovine mastitis is a frequent cause of economic loss in dairy herds. Coagulase-negative staphylococci (CoNS) are increasing in importance as cause of bovine intramammary infection throughout the world in recent years. CoNS have been isolated from milk samples collected from cows with clinical and subclinical mastitis in several countries. Identification of mastitis pathogens is important when selecting appropriate antimicrobial therapy. Methodology: A total of 93 strains of Staphylococcus spp isolated from bovine mastitis in Argentina between 2010 and 2013 were identified by PCR-restriction fragment length polymorphism (PCR-RFLP) using the gap gene and were tested for the presence of blaZ and mecA genes by PCR and for the susceptibility to penicillin and cefoxitin by disk diffusion. Results: The most common CoNS species was S. chromogenes 46.2% (43/93), followed by S. devriesei 11.8% (11/93) and S. haemolyticus 9.7% (9/93). The blaZ gene was detected in 19 (20.4%), but only 16 (17.2%) isolates were resistant to penicillin; the mecA was detected in 6 (6.5%) isolates but only 4 (4.3) were resistant to cefoxitin. The 6 mecA-positive isolates showed oxacillin MICs = 0.5 µg/ml. Discussion: CoNS are important minor mastitis pathogens and can be the cause of substantial economic losses. The presence of methicillin resistant isolates emphasizes the importance of identification of CoNS when an intramammary infection is present because of the potential risk of lateral transfer of resistant genes among staphylococcal species.
Fil: Srednik, Mariela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; Argentina
Fil: Grieben, Mario A.. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina
Fil: Bentancor, Adriana Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina
Fil: Gentilini, Elida Raquel. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina - Materia
-
ANTIMICROBIAL RESISTANCE
BLAZ GENE
BOVINE MASTITIS
COAGULASE-NEGATIVE STAPHYLOCOCCI
MECA GENE
MOLECULAR IDENTIFICATION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/148025
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/148025 |
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CONICET Digital (CONICET) |
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Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistanceSrednik, Mariela ElizabethGrieben, Mario A.Bentancor, Adriana BeatrizGentilini, Elida RaquelANTIMICROBIAL RESISTANCEBLAZ GENEBOVINE MASTITISCOAGULASE-NEGATIVE STAPHYLOCOCCIMECA GENEMOLECULAR IDENTIFICATIONhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4Introduction: Bovine mastitis is a frequent cause of economic loss in dairy herds. Coagulase-negative staphylococci (CoNS) are increasing in importance as cause of bovine intramammary infection throughout the world in recent years. CoNS have been isolated from milk samples collected from cows with clinical and subclinical mastitis in several countries. Identification of mastitis pathogens is important when selecting appropriate antimicrobial therapy. Methodology: A total of 93 strains of Staphylococcus spp isolated from bovine mastitis in Argentina between 2010 and 2013 were identified by PCR-restriction fragment length polymorphism (PCR-RFLP) using the gap gene and were tested for the presence of blaZ and mecA genes by PCR and for the susceptibility to penicillin and cefoxitin by disk diffusion. Results: The most common CoNS species was S. chromogenes 46.2% (43/93), followed by S. devriesei 11.8% (11/93) and S. haemolyticus 9.7% (9/93). The blaZ gene was detected in 19 (20.4%), but only 16 (17.2%) isolates were resistant to penicillin; the mecA was detected in 6 (6.5%) isolates but only 4 (4.3) were resistant to cefoxitin. The 6 mecA-positive isolates showed oxacillin MICs = 0.5 µg/ml. Discussion: CoNS are important minor mastitis pathogens and can be the cause of substantial economic losses. The presence of methicillin resistant isolates emphasizes the importance of identification of CoNS when an intramammary infection is present because of the potential risk of lateral transfer of resistant genes among staphylococcal species.Fil: Srednik, Mariela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; ArgentinaFil: Grieben, Mario A.. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; ArgentinaFil: Bentancor, Adriana Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; ArgentinaFil: Gentilini, Elida Raquel. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; ArgentinaJournal of Infection in Developing Countries2015-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/148025Srednik, Mariela Elizabeth; Grieben, Mario A.; Bentancor, Adriana Beatriz; Gentilini, Elida Raquel; Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance; Journal of Infection in Developing Countries; Journal of Infection in Developing Countries; 9; 9; 9-2015; 1022-10272036-65901972-2680CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3855/jidc.5871info:eu-repo/semantics/altIdentifier/url/https://jidc.org/index.php/journalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:14Zoai:ri.conicet.gov.ar:11336/148025instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:14.728CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
title |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
spellingShingle |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance Srednik, Mariela Elizabeth ANTIMICROBIAL RESISTANCE BLAZ GENE BOVINE MASTITIS COAGULASE-NEGATIVE STAPHYLOCOCCI MECA GENE MOLECULAR IDENTIFICATION |
title_short |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
title_full |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
title_fullStr |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
title_full_unstemmed |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
title_sort |
Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance |
dc.creator.none.fl_str_mv |
Srednik, Mariela Elizabeth Grieben, Mario A. Bentancor, Adriana Beatriz Gentilini, Elida Raquel |
author |
Srednik, Mariela Elizabeth |
author_facet |
Srednik, Mariela Elizabeth Grieben, Mario A. Bentancor, Adriana Beatriz Gentilini, Elida Raquel |
author_role |
author |
author2 |
Grieben, Mario A. Bentancor, Adriana Beatriz Gentilini, Elida Raquel |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
ANTIMICROBIAL RESISTANCE BLAZ GENE BOVINE MASTITIS COAGULASE-NEGATIVE STAPHYLOCOCCI MECA GENE MOLECULAR IDENTIFICATION |
topic |
ANTIMICROBIAL RESISTANCE BLAZ GENE BOVINE MASTITIS COAGULASE-NEGATIVE STAPHYLOCOCCI MECA GENE MOLECULAR IDENTIFICATION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/4.2 https://purl.org/becyt/ford/4 |
dc.description.none.fl_txt_mv |
Introduction: Bovine mastitis is a frequent cause of economic loss in dairy herds. Coagulase-negative staphylococci (CoNS) are increasing in importance as cause of bovine intramammary infection throughout the world in recent years. CoNS have been isolated from milk samples collected from cows with clinical and subclinical mastitis in several countries. Identification of mastitis pathogens is important when selecting appropriate antimicrobial therapy. Methodology: A total of 93 strains of Staphylococcus spp isolated from bovine mastitis in Argentina between 2010 and 2013 were identified by PCR-restriction fragment length polymorphism (PCR-RFLP) using the gap gene and were tested for the presence of blaZ and mecA genes by PCR and for the susceptibility to penicillin and cefoxitin by disk diffusion. Results: The most common CoNS species was S. chromogenes 46.2% (43/93), followed by S. devriesei 11.8% (11/93) and S. haemolyticus 9.7% (9/93). The blaZ gene was detected in 19 (20.4%), but only 16 (17.2%) isolates were resistant to penicillin; the mecA was detected in 6 (6.5%) isolates but only 4 (4.3) were resistant to cefoxitin. The 6 mecA-positive isolates showed oxacillin MICs = 0.5 µg/ml. Discussion: CoNS are important minor mastitis pathogens and can be the cause of substantial economic losses. The presence of methicillin resistant isolates emphasizes the importance of identification of CoNS when an intramammary infection is present because of the potential risk of lateral transfer of resistant genes among staphylococcal species. Fil: Srednik, Mariela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; Argentina Fil: Grieben, Mario A.. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina Fil: Bentancor, Adriana Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina Fil: Gentilini, Elida Raquel. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina |
description |
Introduction: Bovine mastitis is a frequent cause of economic loss in dairy herds. Coagulase-negative staphylococci (CoNS) are increasing in importance as cause of bovine intramammary infection throughout the world in recent years. CoNS have been isolated from milk samples collected from cows with clinical and subclinical mastitis in several countries. Identification of mastitis pathogens is important when selecting appropriate antimicrobial therapy. Methodology: A total of 93 strains of Staphylococcus spp isolated from bovine mastitis in Argentina between 2010 and 2013 were identified by PCR-restriction fragment length polymorphism (PCR-RFLP) using the gap gene and were tested for the presence of blaZ and mecA genes by PCR and for the susceptibility to penicillin and cefoxitin by disk diffusion. Results: The most common CoNS species was S. chromogenes 46.2% (43/93), followed by S. devriesei 11.8% (11/93) and S. haemolyticus 9.7% (9/93). The blaZ gene was detected in 19 (20.4%), but only 16 (17.2%) isolates were resistant to penicillin; the mecA was detected in 6 (6.5%) isolates but only 4 (4.3) were resistant to cefoxitin. The 6 mecA-positive isolates showed oxacillin MICs = 0.5 µg/ml. Discussion: CoNS are important minor mastitis pathogens and can be the cause of substantial economic losses. The presence of methicillin resistant isolates emphasizes the importance of identification of CoNS when an intramammary infection is present because of the potential risk of lateral transfer of resistant genes among staphylococcal species. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/148025 Srednik, Mariela Elizabeth; Grieben, Mario A.; Bentancor, Adriana Beatriz; Gentilini, Elida Raquel; Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance; Journal of Infection in Developing Countries; Journal of Infection in Developing Countries; 9; 9; 9-2015; 1022-1027 2036-6590 1972-2680 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/148025 |
identifier_str_mv |
Srednik, Mariela Elizabeth; Grieben, Mario A.; Bentancor, Adriana Beatriz; Gentilini, Elida Raquel; Molecular identification of coagulase-negative staphylococci isolated from bovine mastitis and detection of beta-lactam resistance; Journal of Infection in Developing Countries; Journal of Infection in Developing Countries; 9; 9; 9-2015; 1022-1027 2036-6590 1972-2680 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3855/jidc.5871 info:eu-repo/semantics/altIdentifier/url/https://jidc.org/index.php/journal |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Journal of Infection in Developing Countries |
publisher.none.fl_str_mv |
Journal of Infection in Developing Countries |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.13397 |