Streptococcus uberis and its importance as a causal agent of bovine mastitis

Relative prevalence of mastitis caused by Streptococcus uberis has been increasing over time, both nationally and internationally. S. uberis has been described as an environmental mastitis causal, although it is considered potentially contagious. The terms “well-adapted strains” or “poorly adapted s...

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Autores principales: Stempler, A., Muñoz, A. J., Lucas, M. F.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Nordeste 2022
Materias:
Streptococcus uberis
Bovine mastitis
Mastitis bovina
Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/6181
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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spelling I48-R154-article-61812023-06-21T16:42:21Z Streptococcus uberis and its importance as a causal agent of bovine mastitis Streptococcus uberis y su importancia como agente causal de la mastitis bovina Stempler, A. Muñoz, A. J. Lucas, M. F. Streptococcus uberis Bovine mastitis Streptococcus uberis Mastitis bovina Relative prevalence of mastitis caused by Streptococcus uberis has been increasing over time, both nationally and internationally. S. uberis has been described as an environmental mastitis causal, although it is considered potentially contagious. The terms “well-adapted strains” or “poorly adapted strains” to the host are used to refer to contagious or environmental strains, respectively. The molecular techniques incorporation has made it possible to characterize S. uberis genetic profiles as virulence factors associated with its pathogenicity. The SUAM and pauA genes showed a high degree of conservation and immunogenicity. Although various reservoirs of S. uberis have been identified in the environment, mastitis due to S. uberis must be prevented both by reducing environmental exposure and transmission linked to milking. In general, clinical cases are treated during lactation, while subclinical mastitis is preferably treated at drying off. It has been shown that, by using extended therapy for 5-8 days, significantly better results are achieved in terms of bacteriological cure. There are reports of antimicrobial resistance and although the levels found for beta-lactams, fluoro-quinolones and macrolides are relatively low, to date an increase in the resistance of S. uberis to tetracyclines has been detected, reaching moderate to high levels. A nivel nacional e internacional, la prevalencia relativa de mastitis causada por Streptococcus uberis fue aumentando a lo largo del tiempo. S. uberis ha sido descripto como agente causal de mastitis bovina de origen ambiental, aunque se lo considera potencialmente contagioso. Los términos “cepas bien adaptadas” o “cepas poco adaptadas” al hospedador son utilizados para referirse a cepas contagiosas o ambientales, respectivamente. La incorporación de técnicas moleculares ha permitido caracterizar distintos perfiles genéticos de S. uberis como factores de virulencia asociados a su patogenicidad y en ese contexto, los genes SUAM y pauA demostraron un alto grado de conservación e inmunogenicidad. Aunque se identificaron diversos reservorios de S. uberis en el ambiente, las estrategias de prevención de este tipo de mastitis no solo se basan en la reducción de la exposición ambiental, sino que contemplan el riesgo de contagio durante el ordeño. En general los casos clínicos son tratados con antimicrobianos durante el período de lactancia, mientras que las mastitis subclínicas se combaten al momento del secado. Si bien se sabe que responden a la terapia local convencional, se ha probado que el uso de terapia extendida durante 5 a 8 días mejora significativamente los resultados en términos de cura bacteriológica. Existen reportes de resistencia a los antibióticos y aunque los niveles hallados para betalactámicos, fluoroquinolonas y macrólidos son relativamente bajos, a la fecha se ha detectado un incremento en la resistencia de S. uberis a tetraciclinas, llegando de niveles moderados a altos. Universidad Nacional del Nordeste 2022-12-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/6181 10.30972/vet.3326181 Revista Veterinaria; Vol. 33 Núm. 2 (2022); 192-201 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/6181/5852 Derechos de autor 2022 Revista Veterinaria
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Streptococcus uberis
Bovine mastitis
Streptococcus uberis
Mastitis bovina
spellingShingle Streptococcus uberis
Bovine mastitis
Streptococcus uberis
Mastitis bovina
Stempler, A.
Muñoz, A. J.
Lucas, M. F.
Streptococcus uberis and its importance as a causal agent of bovine mastitis
topic_facet Streptococcus uberis
Bovine mastitis
Streptococcus uberis
Mastitis bovina
author Stempler, A.
Muñoz, A. J.
Lucas, M. F.
author_facet Stempler, A.
Muñoz, A. J.
Lucas, M. F.
author_sort Stempler, A.
title Streptococcus uberis and its importance as a causal agent of bovine mastitis
title_short Streptococcus uberis and its importance as a causal agent of bovine mastitis
title_full Streptococcus uberis and its importance as a causal agent of bovine mastitis
title_fullStr Streptococcus uberis and its importance as a causal agent of bovine mastitis
title_full_unstemmed Streptococcus uberis and its importance as a causal agent of bovine mastitis
title_sort streptococcus uberis and its importance as a causal agent of bovine mastitis
description Relative prevalence of mastitis caused by Streptococcus uberis has been increasing over time, both nationally and internationally. S. uberis has been described as an environmental mastitis causal, although it is considered potentially contagious. The terms “well-adapted strains” or “poorly adapted strains” to the host are used to refer to contagious or environmental strains, respectively. The molecular techniques incorporation has made it possible to characterize S. uberis genetic profiles as virulence factors associated with its pathogenicity. The SUAM and pauA genes showed a high degree of conservation and immunogenicity. Although various reservoirs of S. uberis have been identified in the environment, mastitis due to S. uberis must be prevented both by reducing environmental exposure and transmission linked to milking. In general, clinical cases are treated during lactation, while subclinical mastitis is preferably treated at drying off. It has been shown that, by using extended therapy for 5-8 days, significantly better results are achieved in terms of bacteriological cure. There are reports of antimicrobial resistance and although the levels found for beta-lactams, fluoro-quinolones and macrolides are relatively low, to date an increase in the resistance of S. uberis to tetracyclines has been detected, reaching moderate to high levels.
publisher Universidad Nacional del Nordeste
publishDate 2022
url https://revistas.unne.edu.ar/index.php/vet/article/view/6181
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AT stemplera streptococcusuberisysuimportanciacomoagentecausaldelamastitisbovina
AT munozaj streptococcusuberisysuimportanciacomoagentecausaldelamastitisbovina
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first_indexed 2023-03-18T23:06:58Z
last_indexed 2024-08-21T22:35:44Z
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