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Content with Investigacion Legionella .

Legionella

Desde su creación hasta la actualidad, La Unidad de Legionella tiene como principal función dar apoyo científico-técnico a la Administración General del Estado, a las Comunidades Autónomas y al Sistema Nacional de Salud en el campo de la prevención y control de la legionelosis, así como llevar a cabo investigaciones científicas en el contexto de la legionelosis. Además, la Unidad de Legionella también actúa como Laboratorio de Referencia de España frente al European Centre for Disease Prevention and Control (ECDC), siendo miembro de la red europea de vigilancia de la legionelosis, “European Legionnaires’ Disease Surveillance Network (ELDSNet). Finalmente, la unidad también realiza una actividad docente, participando en cursos de formación especializada, así como en Máster Universitarios.

 

Principales líneas de investigación

Vigilancia microbiológica

Búsqueda de marcadores moleculares con capacidad de predecir el riesgo de una instalación de provocar legionelosis. Factores de virulencia de Legionella spp.

Estudio de la capacidad formadora de biofilms de Legionella spp. Colonización y dispersión.

Búsqueda de marcadores fenotípicos capaces de discriminar especies del Género Legionella; grupos y subgrupos de Legionella pneumophila.

Diferentes estructuras de biofilms en función de la cepa formadora de Legionella pneumophila. En verde la biomasa bacteriana, en rojo el exopolisacárido de la matriz extracelular.

Apoyo al Sistema Nacional de Salud de la Unidad de Legionella

 

La Unidad de Legionella tambien desarrolla actividades con el fin de proporcionar asistencia al sistema nacional de salud a traves de la oferta disponible en la cartera de servicios del CNM, así como a través de programas de vigilancia microbiológica.

Research projects

Content with Investigacion Legionella .

1: Título del proyecto: Búsqueda de biomarcadores de patogenicidad en Legionella spp con interés predictivo de riesgo de infección.
Investigador principal: Fernando González Camacho
Entidad financiadora: ISCIII (AESI). Referencia:  MPY 341/22
Periodo: 01/01/2023 - 31/12/2025

Publications

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van Beek J, de Graaf M, Al-Hello H, Allen DJ, Ambert-Balay K, Botteldoorn N, Brytting M, Buesa J, Cabrerizo M, Chan M, Cloak F, Di Bartolo I, Guix S, Hewitt J, Iritani N, Jin M, Johne R, Lederer I, Mans J, Martella V, Maunula L, McAllister G, Niendorf S, Niesters HG, Podkolzin AT, Poljsak-Prijatelj M, Rasmussen LD, Reuter G, Tuite G, Kroneman A, Vennema H, Koopmans MPG; NoroNet. Molecular surveillance of norovirus, 2005-16

van Beek J, de Graaf M, Al-Hello H, Allen DJ, Ambert-Balay K, Botteldoorn N, Brytting M, Buesa J, Cabrerizo M, Chan M, Cloak F, Di Bartolo I, Guix S, Hewitt J, Iritani N, Jin M, Johne R, Lederer I, Mans J, Martella V, Maunula L, McAllister G, Niendorf S, Niesters HG, Podkolzin AT, Poljsak-Prijatelj M, Rasmussen LD, Reuter G, Tuite G, Kroneman A, Vennema H, Koopmans MPG; NoroNet. Molecular surveillance of norovirus, 2005-16: an epidemiological analysis of data collected from the NoroNet network. Lancet Infect Dis. 2018 May;18(5):545-553. doi: 10.1016/S1473-3099(18)30059-8. Epub 2018 Jan 26. PMID: 29396001.

González-Serrano L, Muñoz-Algarra M, González-Sanz R, Portero-Azorín MF, Amaro MJ, Higueras P, Cabrerizo M. Viral gastroenteritis in hospitalized patients: Evaluation of immunochromatographic methods for rapid detection in stool samples. J Clin Virol. 2020 Jul;

González-Serrano L, Muñoz-Algarra M, González-Sanz R, Portero-Azorín MF, Amaro MJ, Higueras P, Cabrerizo M. Viral gastroenteritis in hospitalized patients: Evaluation of immunochromatographic methods for rapid detection in stool samples. J Clin Virol. 2020 Jul; 128:104420. doi: 10.1016/j.jcv.2020.104420. Epub 2020 May 15. PMID: 32454428.

Bubba L, Broberg EK, Jasir A, Simmonds P, Harvala H; Enterovirus study collaborators. Circulation of non-polio enteroviruses in 24 EU and EEA countries between 2015 and 2017

Bubba L, Broberg EK, Jasir A, Simmonds P, Harvala H; Enterovirus study collaborators. Circulation of non-polio enteroviruses in 24 EU and EEA countries between 2015 and 2017: a retrospective surveillance study. Lancet Infect Dis. 2020 Mar;20(3):350-361. doi: 10.1016/S1473-3099(19)30566-3. Epub 2019 Dec 20. PMID: 31870905.

Fernandez-Garcia MD, Simon-Loriere E, Kebe O, Sakuntabhai A, Ndiaye K. Identification and molecular characterization of the first complete genome sequence of Human Parechovirus type 15. Sci Rep. 2020 Apr 21

Fernandez-Garcia MD, Simon-Loriere E, Kebe O, Sakuntabhai A, Ndiaye K. Identification and molecular characterization of the first complete genome sequence of Human Parechovirus type 15. Sci Rep. 2020 Apr 21;10(1):6759. doi: 10.1038/s41598-020-63467-w. PMID: 32317760; PMCID: PMC7174385.

Content with Investigacion Legionella .

List of staff

Additional Information

Streptococcus pneumoniae is a human pathogen that, despite the development of vaccines, continues to be an important cause of mortality and morbidity. We investigate the mechanisms of antibiotic resistance in this bacterium. On the one hand by identifying new therapeutic targets and on the other hand by investigating the molecular basis of the action of antibiotics already used in clinical practice (the fluoroquinolones levofloxacin and moxifloxacin) or not yet used (seconeolitsine). For this purpose, we used a multidisciplinary analysis involving genomics, transcriptomics and proteomics to understand the organization of the S. pneumoniae chromosome and the identification of the factors that stabilize this organization, including ncRNAs. Changes in the level of global supercoiling, either by inhibition of gyrase (decrease) or by inhibition of topoisomerase I (increase) alter the transcriptome. The modulated genes are located in domains, whose genes show specific functional characteristics. The aim is to identify new factors essential for S. pneumoniae physiology and to characterize transcriptional regulation in response to topological stress. In addition, RNA interference technology and CRISPR systems will be used as novel antibacterials. These studies will establish the bases for translational research aimed at the development of new therapeutic targets for the treatment of pneumococcal diseases.

Streptococcus pneumoniae is a human pathogen that, despite the development of vaccines, continues to be an important cause of mortality and morbidity. We investigate the mechanisms of antibiotic resistance in this bacterium. On the one hand by identifying new therapeutic targets and on the other hand by investigating the molecular basis of the action of antibiotics already used in clinical practice (the fluoroquinolones levofloxacin and moxifloxacin) or not yet used (seconeolitsine). For this purpose, we used a multidisciplinary analysis involving genomics, transcriptomics and proteomics to understand the organization of the S. pneumoniae chromosome and the identification of the factors that stabilize this organization, including ncRNAs. Changes in the level of global supercoiling, either by inhibition of gyrase (decrease) or by inhibition of topoisomerase I (increase) alter the transcriptome. The modulated genes are located in domains, whose genes show specific functional characteristics. The aim is to identify new factors essential for S. pneumoniae physiology and to characterize transcriptional regulation in response to topological stress. In addition, RNA interference technology and CRISPR systems will be used as novel antibacterials. These studies will establish the bases for translational research aimed at the development of new therapeutic targets for the treatment of pneumococcal diseases.

Content with Investigacion Legionella .