Determinación de lasusceptibilidad a antibióticos y biocidas de cepas de EscherichiaColi aisladas de superficies de un matadero
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2016-07-06
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Jaén: Universidad de Jaén
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[ES]Los antibióticos son sustancias activas que tienen la capacidad de tratar infecciones causadas por bacterias en seres humanos, plantas y animales. Los biocidas son compuestos que pueden ser naturales o sintéticos, cuya capacidad consiste en desinfectar y controlar la proliferación de distintos microorganismos. Ambos presentan estas características debido a sus mecanismos de acción, pero se diferencian unos de otros en el hecho de que los antibióticos actúan sobre una diana bacteriana específica, mientras que los biocidas actúan en múltiples dianas para llevar a cabo su función. Esta resistencia surge como una respuesta al uso excesivo o al mal uso de los agentes antimicrobianos en los diferentes ámbitos, para ello los microorganismos han desarrollado varios mecanismos de resistencia como una estrategia de supervivencia. En esta memoria, hemos analizado la susceptibilidad de cepas de Escherichia coli aisladas de las superficies de un matadero a distintos agentes antimicrobianos para valorar así el grado de resistencia en dicho ambiente. Los resultados obtenidos mostraron una mayor susceptibilidad por los biocidas que por los antibióticos.
[EN]Antibiotics are active substances which have the ability of treating infections caused by bacteria in human, plants and animals. Biocides may be naturals or synthetic compounds capable of disinfecting and to control proliferation of different microorganisms. Both have those qualities because of their mechanisms of action, but they differed because, antibiotics have a specific bacterial target, meanwhile biocides have multiple targets. This resistance appears as a response to an excessive or misuse of antimicrobial agents in different environments, for that reason microorganisms have developed several resistance mechanisms as a survival strategy. In this memory we have analyzed the susceptibility of E. coli strains which isolated from slaughterhouse surfaces to different antimicrobial agents with the aim to evaluate the resistance degree in this environment. The obtained results showed a higher susceptibility for biocides than antibiotics.
[EN]Antibiotics are active substances which have the ability of treating infections caused by bacteria in human, plants and animals. Biocides may be naturals or synthetic compounds capable of disinfecting and to control proliferation of different microorganisms. Both have those qualities because of their mechanisms of action, but they differed because, antibiotics have a specific bacterial target, meanwhile biocides have multiple targets. This resistance appears as a response to an excessive or misuse of antimicrobial agents in different environments, for that reason microorganisms have developed several resistance mechanisms as a survival strategy. In this memory we have analyzed the susceptibility of E. coli strains which isolated from slaughterhouse surfaces to different antimicrobial agents with the aim to evaluate the resistance degree in this environment. The obtained results showed a higher susceptibility for biocides than antibiotics.