Estudio de la expresión diferencial de proteínas de bacterias periodontales mediante herramientas proteómicas
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2021
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02/02/2021
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Universidad Complutense de Madrid
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Abstract
Aunque la mayoría de los microorganismos que colonizan la cavidad bucal son compatibles con la salud periodontal. Hay patobiontes específicos que han mostrado patogenicidad al alterar la tolerancia inmune del huésped, causando una inflamación crónica en los tejidos periodontales que conduce a los cambios destructivos en el tejido conectivo y óseo que caracterizan a la periodontitis. A pesar de que el factor etiológico principal de la periodontitis son los microorganismos que residen en la biopelícula subgingival, sólo un pequeño grupo de bacterias se ha asociado directamente con el inicio y la progresión de esta enfermedad, principalmente las implicadas en el cambio de la microbiota en estado simbiótico al estado disbiótico. La formación de la biopelícula desencadena la expresión de proteínas, en comparación con las células planctónicas.
Objetivo: Estudiar la expresión diferencial de proteínas de las bacterias periodontales (Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis), en la biopelícula frente al estado planctónico, utilizando herramientas proteómicas...
Although the majority of the micro-organisms that colonise the oral cavity and dental surfaces are compatible with periodontal health, there are specific pathobionts that have shown pathogenicity by disrupting the host immune tolerance and causing a chronic unresolved inflammation in the periodontal tissues leading to the destructive changes in the connective and bone tissue metabolism that characterize periodontal disease. Despite the fact that the primary etiological factor of periodontitis are the microorganisms residing in the subgingival biofilm, only a small group of bacteria have been directly associated with initiation and progression of this disease, mainly those involved in the switching symbiotic microbiota into a dysbiotic state. Numerous studies have demonstrated that the biofilm formation triggers the expression of specific sets of proteins, compared to planktonic cells. The aim of this investigation was to study the protein differential expression of periodontal bacteria (Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis), when growing in biofilm compared to planktonic state using proteomic tools...
Although the majority of the micro-organisms that colonise the oral cavity and dental surfaces are compatible with periodontal health, there are specific pathobionts that have shown pathogenicity by disrupting the host immune tolerance and causing a chronic unresolved inflammation in the periodontal tissues leading to the destructive changes in the connective and bone tissue metabolism that characterize periodontal disease. Despite the fact that the primary etiological factor of periodontitis are the microorganisms residing in the subgingival biofilm, only a small group of bacteria have been directly associated with initiation and progression of this disease, mainly those involved in the switching symbiotic microbiota into a dysbiotic state. Numerous studies have demonstrated that the biofilm formation triggers the expression of specific sets of proteins, compared to planktonic cells. The aim of this investigation was to study the protein differential expression of periodontal bacteria (Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis), when growing in biofilm compared to planktonic state using proteomic tools...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Odontología, leída el 02/02/2021