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Palau M, Kulmann M, Ramírez-Lázaro MJ, Lario S, Quilez ME, Campo R, Piqué N, Calvet X, Miñana-Galbis D. Usefulness of Housekeeping Genes for the Diagnosis of Helicobacter pylori Infection, Strain Discrimination and Detection of Multiple Infection. Helicobacter 2016; 21:481-487. [PMID: 26991758 DOI: 10.1111/hel.12304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Helicobacter pylori infects human stomachs of over half the world's population, evades the immune response and establishes a chronic infection. Although most people remains asymptomatic, duodenal and gastric ulcers, MALT lymphoma and progression to gastric cancer could be developed. Several virulence factors such as flagella, lipopolysaccharide, adhesins and especially the vacuolating cytotoxin VacA and the oncoprotein CagA have been described for H. pylori. Despite the extensive published data on H. pylori, more research is needed to determine new virulence markers, the exact mode of transmission or the role of multiple infection. MATERIALS AND METHODS Amplification and sequencing of six housekeeping genes (amiA, cgt, cpn60, cpn70, dnaJ, and luxS) related to H. pylori pathogenesis have been performed in order to evaluate their usefulness for the specific detection of H. pylori, the genetic discrimination at strain level and the detection of multiple infection. A total of 52 H. pylori clones, isolated from 14 gastric biopsies from 11 patients, were analyzed for this purpose. RESULTS All genes were specifically amplified for H. pylori and all clones isolated from different patients were discriminated, with gene distances ranged from 0.9 to 7.8%. Although most clones isolated from the same patient showed identical gene sequences, an event of multiple infection was detected in all the genes and microevolution events were showed for amiA and cpn60 genes. CONCLUSIONS These results suggested that housekeeping genes could be useful for H. pylori detection and to elucidate the mode of transmission and the relevance of the multiple infection.
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Affiliation(s)
- Montserrat Palau
- Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Marcos Kulmann
- Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - María José Ramírez-Lázaro
- Digestive Diseases Service, Hospital de Sabadell, Institut Universitari Parc Taulí, Departament de Medicina, Universitat Autònoma de Barcelona, Sabadell, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Sergio Lario
- Digestive Diseases Service, Hospital de Sabadell, Institut Universitari Parc Taulí, Departament de Medicina, Universitat Autònoma de Barcelona, Sabadell, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - María Elisa Quilez
- Digestive Diseases Service, Hospital de Sabadell, Institut Universitari Parc Taulí, Departament de Medicina, Universitat Autònoma de Barcelona, Sabadell, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Campo
- Digestive Diseases Service, Hospital de Sabadell, Institut Universitari Parc Taulí, Departament de Medicina, Universitat Autònoma de Barcelona, Sabadell, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Núria Piqué
- Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Xavier Calvet
- Digestive Diseases Service, Hospital de Sabadell, Institut Universitari Parc Taulí, Departament de Medicina, Universitat Autònoma de Barcelona, Sabadell, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - David Miñana-Galbis
- Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Catalonia, Spain
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Quilez ME, Fuster G, Villar J, Flores C, Martí-Sistac O, Blanch L, López-Aguilar J. Erratum to: Injurious mechanical ventilation affects neuronal activation in ventilated rats. Crit Care 2015; 19:379. [PMID: 26506991 PMCID: PMC4624182 DOI: 10.1186/s13054-015-1076-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 09/23/2015] [Indexed: 11/10/2022]
Affiliation(s)
- María Elisa Quilez
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Critical Care Center, Corporació Sanitaria Parc Taulí, Institut Universitari, Esfera UAB. Parc Taulí sn, Sabadell, 08208, Spain. .,Universitat Autònoma de Barcelona, Campus de la UAB, Bellaterra, 08193, Spain.
| | - Gemma Fuster
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Critical Care Center, Corporació Sanitaria Parc Taulí, Institut Universitari, Esfera UAB. Parc Taulí sn, Sabadell, 08208, Spain.
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Research Unit, Hospital Universitario Dr.Negrín, Barranco de la Ballena s/n, Las Palmas de Gran Canaria, 35010, Spain.
| | - Carlos Flores
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Research Unit, Hospital Universitario N.S. de Candelaria, Carretera del Rosario 145, Santa Cruz de Tenerife, 38010, Spain.
| | - Octavi Martí-Sistac
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Critical Care Center, Corporació Sanitaria Parc Taulí, Institut Universitari, Esfera UAB. Parc Taulí sn, Sabadell, 08208, Spain. .,Universitat Autònoma de Barcelona, Campus de la UAB, Bellaterra, 08193, Spain.
| | - Lluís Blanch
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Critical Care Center, Corporació Sanitaria Parc Taulí, Institut Universitari, Esfera UAB. Parc Taulí sn, Sabadell, 08208, Spain.
| | - Josefina López-Aguilar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado 6, Madrid, 28029, Spain. .,Critical Care Center, Corporació Sanitaria Parc Taulí, Institut Universitari, Esfera UAB. Parc Taulí sn, Sabadell, 08208, Spain.
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Villar J, Cabrera NE, Valladares F, Casula M, Flores C, Blanch L, Quilez ME, Santana-Rodríguez N, Kacmarek RM, Slutsky AS. Activation of the Wnt/β-catenin signaling pathway by mechanical ventilation is associated with ventilator-induced pulmonary fibrosis in healthy lungs. PLoS One 2011; 6:e23914. [PMID: 21935365 PMCID: PMC3174135 DOI: 10.1371/journal.pone.0023914] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Accepted: 07/27/2011] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Mechanical ventilation (MV) with high tidal volumes (V(T)) can cause or aggravate lung damage, so-called ventilator induced lung injury (VILI). The relationship between specific mechanical events in the lung and the cellular responses that result in VILI remains incomplete. Since activation of Wnt/β-catenin signaling has been suggested to be central to mechanisms of lung healing and fibrosis, we hypothesized that the Wnt/β-catenin signaling plays a role during VILI. METHODOLOGY/PRINCIPAL FINDINGS Prospective, randomized, controlled animal study using adult, healthy, male Sprague-Dawley rats. Animals (n = 6/group) were randomized to spontaneous breathing or two strategies of MV for 4 hours: low tidal volume (V(T)) (6 mL/kg) or high V(T) (20 mL/kg). Histological evaluation of lung tissue, measurements of WNT5A, total β-catenin, non-phospho (Ser33/37/Thr41) β-catenin, matrix metalloproteinase-7 (MMP-7), cyclin D1, vascular endothelial growth factor (VEGF), and axis inhibition protein 2 (AXIN2) protein levels by Western blot, and WNT5A, non-phospho (Ser33/37/Thr41) β-catenin, MMP-7, and AXIN2 immunohistochemical localization in the lungs were analyzed. High-V(T) MV caused lung inflammation and perivascular edema with cellular infiltrates and collagen deposition. Protein levels of WNT5A, non-phospho (Ser33/37/Thr41) β-catenin, MMP-7, cyclin D1, VEGF, and AXIN2 in the lungs were increased in all ventilated animals although high-V(T) MV was associated with significantly higher levels of WNT5A, non-phospho (Ser33/37/Thr41) β-catenin, MMP-7, cyclin D1, VEGF, and AXIN2 levels. CONCLUSIONS/SIGNIFICANCE Our findings demonstrate that the Wnt/β-catenin signaling pathway is modulated very early by MV in lungs without preexistent lung disease, suggesting that activation of this pathway could play an important role in both VILI and lung repair. Modulation of this pathway might represent a therapeutic option for prevention and/or management of VILI.
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Affiliation(s)
- Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.
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