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de Diego C, Lasierra AB, López-Vergara L, Torralba L, Ruiz de Gopegui P, Lahoz R, Abadía C, Godino J, Cebollada A, Jimeno B, Bello C, Tejada A, Bello S. What is the actual relationship between neutrophil extracellular traps and COVID-19 severity? A longitudinal study. Respir Res 2024; 25:48. [PMID: 38243237 PMCID: PMC10797938 DOI: 10.1186/s12931-023-02650-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/21/2023] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Neutrophil extracellular traps (NETs) have repeatedly been related to COVID-19 severity and mortality. However, there is no consensus on their quantification, and there are scarce data on their evolution during the disease. We studied circulating NET markers in patients with COVID-19 throughout their hospitalization. METHODS We prospectively included 93 patients (201 blood samples), evaluating the disease severity in 3 evolutionary phases (viral, early, and late inflammation). Of these, 72 had 180 samples in various phases. We also evaluated 55 controls with similar age, sex and comorbidities. We measured 4 NET markers in serum: cfDNA, CitH3, and MPO-DNA and NE-DNA complexes; as well as neutrophil-related cytokines IL-8 and G-CSF. RESULTS The COVID-19 group had higher CitH3 (28.29 vs 20.29 pg/mL, p = 0.022), and cfDNA, MPO-DNA, and NE-DNA (7.87 vs 2.56 ng/mL; 0.80 vs 0.52 and 1.04 vs 0.72, respectively, p < 0.001 for all) than the controls throughout hospitalisation. cfDNA was the only NET marker clearly related to severity, and it remained higher in non-survivors during the 3 phases. Only cfDNA was an independent risk factor for mortality and need for intensive care. Neutrophil count, IL-8, and G-CSF were significantly related to severity. MPO-DNA and NE-DNA showed significant correlations (r: 0.483, p < 0.001), including all 3 phases and across all severity grades, and they only remained significantly higher on days 10-16 of evolution in those who died. Correlations among the other NET markers were lower than expected. CONCLUSIONS The circulating biomarkers of NETs were present in patients with COVID-19 throughout hospitalization. cfDNA was associated with severity and mortality, but the three other markers showed little or no association with these outcomes. Neutrophil activity and neutrophil count were also associated with severity. MPO-DNA and NE-DNA better reflected NET formation. cfDNA appeared to be more associated with overall tissue damage; previous widespread use of this marker could have overestimated the relationship between NETs and severity. Currently, there are limitations to accurate NET markers measurement that make it difficult to assess its true role in COVID-19 pathogenesis.
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Affiliation(s)
- Cristina de Diego
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel la Católica 1-9, 50009, Zaragoza, Spain
| | | | - Lucía López-Vergara
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel la Católica 1-9, 50009, Zaragoza, Spain
| | - Laura Torralba
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel la Católica 1-9, 50009, Zaragoza, Spain
| | | | - Raquel Lahoz
- Department of Biochemistry. Miguel, Servet University Hospital, Zaragoza, Spain
| | - Claudia Abadía
- Department of Biochemistry. Miguel, Servet University Hospital, Zaragoza, Spain
| | - Javier Godino
- Department of Cytometry and Cell Separation, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Alberto Cebollada
- Biocomputing Technical Scientific Service, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Beatriz Jimeno
- Department of Cytometry and Cell Separation, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Carlota Bello
- Department of Radiology, Hospital Clínico Lozano Blesa, Zaragoza, Spain
| | - Antonio Tejada
- Intensive Care Unit, Miguel Servet University Hospital, Zaragoza, Spain
| | - Salvador Bello
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel la Católica 1-9, 50009, Zaragoza, Spain.
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2
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Bello S, Lasierra AB, López-Vergara L, de Diego C, Torralba L, de Gopegui PR, Lahoz R, Abadía C, Godino J, Cebollada A, Jimeno B, Bello C, Tejada A, Torres A. IL-6 and cfDNA monitoring throughout COVID-19 hospitalization are accurate markers of its outcomes. Respir Res 2023; 24:125. [PMID: 37147677 PMCID: PMC10161166 DOI: 10.1186/s12931-023-02426-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 04/18/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND Severe COVID-19 entails a dysregulated immune response, most likely inflammation related to a lack of virus control. A better understanding of immune toxicity, immunosuppression balance, and COVID-19 assessments could help determine whether different clinical presentations are driven by specific types of immune responses. The progression of the immune response and tissular damage could predict outcomes and may help in the management of patients. METHODS We collected 201 serum samples from 93 hospitalised patients classified as moderately, severely, and critically ill. We differentiated the viral, early inflammatory, and late inflammatory phases and included 72 patients with 180 samples in separate stages for longitudinal study and 55 controls. We studied selected cytokines, P-selectin, and the tissue damage markers lactate dehydrogenase (LDH) and cell-free DNA (cfDNA). RESULTS TNF-α, IL-6, IL-8, and G-CSF were associated with severity and mortality, but only IL-6 increased since admission in the critical patients and non-survivors, correlating with damage markers. The lack of a significant decrease in IL-6 levels in the critical patients and non-survivors in the early inflammatory phase (a decreased presence in the other patients) suggests that these patients did not achieve viral control on days 10-16. For all patients, lactate dehydrogenase and cfDNA levels increased with severity, and cfDNA levels increased in the non-survivors from the first sample (p = 0.002) to the late inflammatory phase (p = 0.031). In the multivariate study, cfDNA was an independent risk factor for mortality and ICU admission. CONCLUSIONS The distinct progression of IL-6 levels in the course of the disease, especially on days 10-16, was a good marker of progression to critical status and mortality and could guide the start of IL-6 blockade. cfDNA was an accurate marker of severity and mortality from admission and throughout COVID-19 progression.
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Affiliation(s)
- Salvador Bello
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel La Católica 1-9, 50009, Zaragoza, Spain.
| | | | - Lucía López-Vergara
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel La Católica 1-9, 50009, Zaragoza, Spain
| | - Cristina de Diego
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel La Católica 1-9, 50009, Zaragoza, Spain
| | - Laura Torralba
- Department of Pulmonary Medicine, Miguel Servet University Hospital, CIBERES, Instituto de Investigación Sanitaria (ISS) Aragón, Avenida Isabel La Católica 1-9, 50009, Zaragoza, Spain
| | | | - Raquel Lahoz
- Department of Biochemistry, Miguel Servet University Hospital, Zaragoza, Spain
| | - Claudia Abadía
- Department of Biochemistry, Miguel Servet University Hospital, Zaragoza, Spain
| | - Javier Godino
- Department of Cytometry and Cell Separation, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Alberto Cebollada
- Biocomputing Technical Scientific Service, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Beatriz Jimeno
- Department of Cytometry and Cell Separation, Aragon Institute of Health Sciences (IACS), Zaragoza, Spain
| | - Carlota Bello
- Department of Radiology, Hospital Clínico Lozano Blesa, Zaragoza, Spain
| | - Antonio Tejada
- Intensive Care Unit, Miguel Servet University Hospital, Zaragoza, Spain
| | - Antoni Torres
- Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, CIBERESUCICOVID, Barcelona, Spain
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3
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Tejada A, Montañez L, Torres C, Llontop P, Flores L, De Zela F, Winnacker A, Guerra JA. Determination of the fundamental absorption and optical bandgap of dielectric thin films from single optical transmittance measurements. Appl Opt 2019; 58:9585-9594. [PMID: 31873557 DOI: 10.1364/ao.58.009585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/28/2019] [Indexed: 06/10/2023]
Abstract
In this work, we propose a method to retrieve the thickness and optical constants of dielectric thin films from single optical transmittance measurements. The method is based on the envelope method and requires a simple dispersion model for the real part of the refractive index with few fitting parameters, while the absorption coefficient can be determined without the aid of a dispersion model. The wavelength-dependent optical constants can be obtained even from spectra that exhibit few interference fringes. We have tested the method with simulated and real transmittance data from thin films in the spectral range covering the fundamental absorption. In order to assess the method's reliability to retrieve the optical constants and optical bandgap, a comparison is performed with the method by Chambouleyron, known as the Pointwise Unconstrained Minimization Approach, and a fit using the Cody-Lorentz dispersion model. We evaluate the methods' capability to retrieve the fundamental absorption and optical bandgap, and their compromise with film thickness accuracy. Finally, the methods are tested and contrasted using optical transmittance of three different semiconductor material thin films.
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4
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Fernández de Larrea-Baz N, Michel A, Romero B, Pérez-Gómez B, Moreno V, Martín V, Dierssen-Sotos T, Jiménez-Moleón JJ, Castilla J, Tardón A, Ruiz I, Peiró R, Tejada A, Chirlaque MD, Butt JA, Olmedo-Requena R, Gómez-Acebo I, Linares P, Boldo E, Castells A, Pawlita M, Castaño-Vinyals G, Kogevinas M, de Sanjosé S, Pollán M, Del Campo R, Waterboer T, Aragonés N. Helicobacter pylori Antibody Reactivities and Colorectal Cancer Risk in a Case-control Study in Spain. Front Microbiol 2017; 8:888. [PMID: 28611733 PMCID: PMC5447227 DOI: 10.3389/fmicb.2017.00888] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 05/02/2017] [Indexed: 12/19/2022] Open
Abstract
Background: Several studies have suggested that Helicobacter pylori (H. pylori) infection is a risk factor for colorectal cancer (CRC), while others have not confirmed this hypothesis. This work aimed to assess the relation of CRC with H. pylori seropositivity and with seropositivity to 16 H. pylori proteins, in the MultiCase-Control study, MCC-Spain. Methods: MCC-Spain is a multicase-control study carried out in Spain from 2008 to 2013. In total, 2,140 histologically-confirmed incident CRC cases and 4,098 population-based controls were recruited. Controls were frequency-matched by sex, age, and province. Epidemiological data were collected through a questionnaire fulfilled by face-to-face interviews and a self-administered food-frequency questionnaire. Seroreactivities against 16 H. pylori proteins were determined in 1,488 cases and 2,495 controls using H. pylori multiplex serology. H. pylori seropositivity was defined as positivity to ≥4 proteins. Multivariable logistic regression mixed models were used to estimate odds ratios (OR) and 95% confidence intervals (CI). Results:H. pylori seropositivity was not associated with increased CRC risk (OR = 0.91; 95% CI: 0.71–1.16). Among H. pylori seropositive subjects, seropositivity to Cagδ showed a lower CRC risk, and risk decreased with increasing number of proteins seropositive. Seropositivity to the most recognized virulence factors, CagA and VacA, was not associated with a higher CRC risk. No statistically significant heterogeneity was identified among tumor sites, although inverse relations were stronger for left colon cancer. An interaction with age and sex was found: H. pylori seropositivity was associated with a lower CRC risk in men younger than 65 and with a higher risk in older women. Conclusions: Our results suggest that neither H. pylori seropositivity, nor seropositivity to the virulence factor CagA are associated with a higher CRC risk. A possible effect modification by age and sex was identified.
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Affiliation(s)
- Nerea Fernández de Larrea-Baz
- Environmental and Cancer Epidemiology Area, National Center of Epidemiology, Instituto de Salud Carlos IIIMadrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain
| | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ)Heidelberg, Germany
| | - Beatriz Romero
- Department of Microbiology, Ramón y Cajal University Hospital (IRYCIS)Madrid, Spain
| | - Beatriz Pérez-Gómez
- Environmental and Cancer Epidemiology Area, National Center of Epidemiology, Instituto de Salud Carlos IIIMadrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Cancer Epidemiology Research Group, Oncology and Hematology Area, IIS Puerta de Hierro (Puerta de Hierro Health Research Institute)Madrid, Spain
| | - Victor Moreno
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Cancer Prevention and Control Program, Catalan Institute of OncologyHospitalet de Llobregat, Spain.,Department of Clinical Sciences, Faculty of Medicine, University of BarcelonaBarcelona, Spain.,Colorectal Cancer Group, Bellvitge Biomedical Research Institute (IDIBELL)Hospitalet de Llobregat, Spain
| | - Vicente Martín
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,The Research Group in Gene - Environment and Health Interactions, University of LeónLeón, Spain.,Area of Preventive Medicine and Public Health, Faculty of Health Sciences, Department of Biomedical Sciences, University of LeónLeón, Spain
| | - Trinidad Dierssen-Sotos
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Division of Epidemiology and Computational Biology, School of Medicine, University of Cantabria-IDIVALSantander, Spain
| | - José J Jiménez-Moleón
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Granada Health Research Institute (ibs.GRANADA) - Instituto de Investigación Biosanitaria de GranadaGranada, Spain.,Department of Preventive Medicine and Public Health, University of GranadaGranada, Spain
| | - Jesús Castilla
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Instituto de Salud Pública de Navarra, IdiSNA-Navarra Institute for Health ResearchPamplona, Spain
| | - Adonina Tardón
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Molecular Epidemiology of Cancer Unit, Oncology Institute, Department of Medicine, University of OviedoOviedo, Spain
| | - Irune Ruiz
- Department of Pathology, Donostia University HospitalDonostia, Spain
| | - Rosana Peiró
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO) - Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana FISABIO-Salud PúblicaValencia, Spain
| | - Antonio Tejada
- Coloproctology Unit, Department of General Surgery, Huelva University Hospital ComplexHuelva, Spain
| | - María D Chirlaque
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Department of Epidemiology, Regional Health Council, IMIB-ArrixacaMurcia, Spain.,Department of Health and Social Sciences, University of MurciaMurcia, Spain
| | - Julia A Butt
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ)Heidelberg, Germany
| | - Rocío Olmedo-Requena
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Granada Health Research Institute (ibs.GRANADA) - Instituto de Investigación Biosanitaria de GranadaGranada, Spain.,Department of Preventive Medicine and Public Health, University of GranadaGranada, Spain
| | - Inés Gómez-Acebo
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Division of Epidemiology and Computational Biology, School of Medicine, University of Cantabria-IDIVALSantander, Spain
| | - Pedro Linares
- Department of Gastroenterology and Hepatology, Complejo Asistencial Universitario de LeónLeón, Spain
| | - Elena Boldo
- Environmental and Cancer Epidemiology Area, National Center of Epidemiology, Instituto de Salud Carlos IIIMadrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Cancer Epidemiology Research Group, Oncology and Hematology Area, IIS Puerta de Hierro (Puerta de Hierro Health Research Institute)Madrid, Spain
| | - Antoni Castells
- Gastroenterology Department, Hospital ClínicBarcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)Barcelona, Spain.,CIBER Liver and Digestive Diseases - CIBER Enfermedades Hepáticas y Digestivas (CIBEREHD)Madrid, Spain.,Department of Gastroenterology, University of BarcelonaBarcelona, Spain
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ)Heidelberg, Germany
| | - Gemma Castaño-Vinyals
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,ISGlobal, Centre for Research in Environmental Epidemiology (CREAL)Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM)Barcelona, Spain.,Department of Experimental and Health Sciences, Universitat Pompeu FabraBarcelona, Spain
| | - Manolis Kogevinas
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,ISGlobal, Centre for Research in Environmental Epidemiology (CREAL)Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM)Barcelona, Spain.,Department of Experimental and Health Sciences, Universitat Pompeu FabraBarcelona, Spain
| | - Silvia de Sanjosé
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Cancer Epidemiology and Research Program, Catalan Institute of Oncology-IDIBELLHospitalet de Llobregat, Spain
| | - Marina Pollán
- Environmental and Cancer Epidemiology Area, National Center of Epidemiology, Instituto de Salud Carlos IIIMadrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain.,Cancer Epidemiology Research Group, Oncology and Hematology Area, IIS Puerta de Hierro (Puerta de Hierro Health Research Institute)Madrid, Spain
| | - Rosa Del Campo
- Department of Microbiology, Ramón y Cajal University Hospital (IRYCIS)Madrid, Spain.,Spanish Network for Research in Infectious Diseases - Red Española de Investigación en Patología InfecciosaSevilla, Spain
| | - Tim Waterboer
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ)Heidelberg, Germany
| | - Nuria Aragonés
- Environmental and Cancer Epidemiology Area, National Center of Epidemiology, Instituto de Salud Carlos IIIMadrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBER of Epidemiology and Public Health) - Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP)Madrid, Spain
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5
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Suárez-García I, Sobrino-Vegas P, Tejada A, Viciana P, Ribas MA, Iribarren JA, Díaz Menéndez M, Rivero M, Arazo P, del Amo J, Moreno S. Compliance with national guidelines for HIV treatment and its association with mortality and treatment outcome: a study in a Spanish cohort. HIV Med 2013; 15:86-97. [DOI: 10.1111/hiv.12078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2013] [Indexed: 11/29/2022]
Affiliation(s)
- I Suárez-García
- Infectious Diseases Unit; Infanta Sofía Hospital; Madrid Spain
| | | | - A Tejada
- Ramón y Cajal Hospital; Madrid Spain
| | - P Viciana
- Virgen del Rocío Hospital; Sevilla Spain
| | - MA Ribas
- Son Espases Hospital; Palma de Mallorca; Spain
| | | | | | - M Rivero
- Navarra Hospital; Pamplona Spain
| | - P Arazo
- Miguel Servet Hospital; Zaragoza Spain
| | - J del Amo
- National Epidemiology Center; Madrid Spain
| | - S Moreno
- Ramón y Cajal Hospital; Madrid Spain
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6
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Miceli C, Tejada A, Castaneda A, Mistry SJ. Cell cycle inhibition therapy that targets stathmin in in vitro and in vivo models of breast cancer. Cancer Gene Ther 2013; 20:298-307. [PMID: 23618950 DOI: 10.1038/cgt.2013.21] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Stathmin is the founding member of a family of microtubule-destabilizing proteins that have a critical role in the regulation of mitosis. Stathmin is expressed at high levels in breast cancer and its overexpression is linked to disease progression. Although there is a large body of evidence to support a role for stathmin in breast cancer progression, the validity of stathmin as a viable therapeutic target for breast cancer has not been investigated. Here, we used a bicistronic adenoviral vector that co-expresses green fluorescent protein and a ribozyme that targets stathmin messenger RNA in preclinical breast cancer models with different estrogen receptor (ER) status. We examined the effects of anti-stathmin ribozyme on the malignant phenotype of breast cancer cells in vitro and in xenograft models in vivo both as a single agent and in combination with chemotherapeutic agents. Adenovirus-mediated gene transfer of anti-stathmin ribozyme resulted in a dose-dependent inhibition of proliferation and clonogenicity associated with a G2/M arrest and increase in apoptosis in both ER-positive and ER-negative breast cancer cell lines. This inhibition was markedly enhanced when stathmin-inhibited breast cancer cells were exposed to low concentrations of taxol, which resulted in virtually complete loss of the malignant phenotype. Interestingly, breast cancer xenografts treated with low doses of anti-stathmin therapy and taxol showed regression in a majority of tumors, while some tumors stopped growing completely. In contrast, combination of anti-stathmin ribozyme and adriamycin resulted in only a modest inhibition of growth in vitro and in breast cancer xenografts in vivo. Although inhibition of tumor growth was observed in both the combination treatment groups compared with groups treated with single agent alone, combination of anti-stathmin therapy and taxol had a more profound inhibition of tumorigenicity, as both agents target the microtubule pathway. Clinically, these findings are highly relevant because taxol is one of the most active chemotherapeutic agents in breast cancer. These studies provide the proof-of-principle that stathmin provides an attractive molecular target, which could serve as a primary focus of novel approaches to breast cancer.
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Affiliation(s)
- C Miceli
- Division of Hematology-Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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7
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Socas Macías M, Alamo Martín JM, Suárez Grau JM, Suárez Artacho G, Tejada A, Martín Cartes J, Hissnard Cadet JM, Bustos M, Tutosaus Gómez JD, Morales Méndez S. Atypical left paraduodenal hernia. Rev Esp Enferm Dig 2006; 98:473-5. [PMID: 16948546 DOI: 10.4321/s1130-01082006000600008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M Socas Macías
- Service of General Surgery, University Hospitals Virgen del Rocío, Sevilla, Spain
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8
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Christoforidis GA, Mohammad Y, Avutu B, Tejada A, Slivka AP. Arteriographic demonstration of slow antegrade opacification distal to a cerebrovascular thromboembolic occlusion site as a favorable indicator for intra-arterial thrombolysis. AJNR Am J Neuroradiol 2006; 27:1528-31. [PMID: 16908573 PMCID: PMC7977550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
PURPOSE This study sought to determine whether the angiographic demonstration of slow antegrade contrast opacification of an occluded cerebral artery distal to the thrombus (clot outline sign) on cerebral arteriograms performed immediately before thrombolytic treatment is associated with higher recanalization rates relative to patients without antegrade contrast opacification distal to the occlusion site. METHODS The angiographic images of 100 consecutive arteriograms performed before thrombolysis in patients eligible for intra-arterial thrombolysis from May 1995 to February 2005 were reviewed. A modified Thrombolysis in Myocardial Infarction flow grade (mTIMI) was adapted to grade recanalization after cerebral thrombolysis. Clot outline sign was defined as slow antegrade contrast opacification distal to the thrombus on the delayed images of the presenting arteriogram. Logistic regression analysis for mTIMI grade included the following potential predictors: presence of outline sign, age, time to treatment, sex, site of occlusion, presenting National Institutes of Health Stroke Scale (NIHSS) score, presenting platelets, presenting systolic blood pressure, presence of pial collaterals, and admitting glucose value. RESULTS Eighty-seven arteriograms were reviewed. Of these, 19 (22%) displayed the clot outline sign. Thirteen (69%) of 19 had clot outline sign, and 16 of 68 (29%) were not completely recanalized (mTIMI = 3); 95% with clot outline sign and 54% without were associated with either mTIMI 2 or 3 (P = .0055, Pearson correlation). Logistic regression analysis for recanalization relative to other predictors indicates that only the clot outline sign could act as a statistically significant predictor for recanalization (P = .0007). CONCLUSION Prethrombolysis cerebral arteriograms demonstrating delayed antegrade contrast opacification distal to the occlusion site are associated with higher recanalization rates.
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Affiliation(s)
- G A Christoforidis
- Department of Radiology, The Ohio State University Medical Center, Columbus, OH 43210, USA.
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Abstract
Brucellar hepatic abscesses are rare; to our knowledge, only 41 cases have been described in the literature. We report the case of a 29-year-old Spanish woman who was hospitalized because of fever, weakness, and weight loss. Abdominal sonography showed a hypoechoic lesion with central calcification. Brucella spp. were not isolated from an aspirate of the liver or blood cultures. The diagnosis was based on the association of characteristic sonographic features (central calcification and peripheral necrotic areas) and positive Brucella agglutination tests. The patient improved rapidly with antibiotic treatment.
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Affiliation(s)
- A Cosme
- Gastroenterology Service, Hospital Aránzazu, San Sebastián, Guipúzcoa, Spain
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10
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Lucas CM, Franke ED, Cachay MI, Tejada A, Cruz ME, Kreutzer RD, Barker DC, McCann SH, Watts DM. Geographic distribution and clinical description of leishmaniasis cases in Peru. Am J Trop Med Hyg 1998; 59:312-7. [PMID: 9715953 DOI: 10.4269/ajtmh.1998.59.312] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Studies were conducted from 1986 through 1993 to further define the geographic distribution and relative importance of different species of Leishmania as a cause of leishmaniasis in Peru. Patients with a clinical diagnosis of cutaneous and/or mucosal or diffuse cutaneous leishmaniasis were enrolled at the Naval Medical Research Institute Detachment (NAMRID) Laboratory in Lima, the Tropical Disease Clinic at San Marcos University Daniel A. Carrión, the Central Military Hospital, and a Ministry of Health hospital in Cusco, Peru. Clinical features, lesion aspirates, and biopsy tissue were obtained from each patient. All specimens were collected and assayed separately, including multiple specimens from some of the same patients for Leishmania parasites by inoculating aliquots of either aspirates or biopsy tissue suspensions onto Senekji's blood agar medium. Stocks of Leishmania isolates were used to prepare promastigotes to produce extracts for identifying the Leishmania species by the cellulose acetate electrophoresis enzyme technique. A total of 351 isolates of Leishmania were obtained from 350 patients who were infected primarily in the low and high jungle of at least 15 different Departments of Peru. Of the 351 isolates, 79% were identified as L. (V.) braziliensis, 7% as L. (V.) guyanensis, 10% as L. (V.) peruviana, 2% as L. (V.) lainsoni, and 1.7% as L. (L.) amazonensis. The clinical form of disease varied depending on the species of Leishmania, with L. (V.) braziliensis being associated most frequently with cutaneous, mucosal ulcers and mixed cutaneous and mucosal disease, and L. (V) peruviana, L. (V.) guyanensis, L. (V.) lainsoni with cutaneous lesions. Leishmania (L.) amazonensis was isolated from six patients, three with cutaneous lesions, one with mucosal lesions, and two with diffuse cutaneous lesions. Among all of the leishmaniasis cases, males were affected more frequently, and cases occurred among patients less than 10 to more than 51 years of age. These data further defined the geographic distribution and the relative frequency of Leishmania species associated with different clinical forms of leishmaniasis in Peru.
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Affiliation(s)
- C M Lucas
- U.S. Naval Medical Research Institute Detachment, Lima, Peru
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Lucas CM, Franke ED, Cachay MI, Tejada A, Carrizales D, Kreutzer RD. Leishmania (Viannia) lainsoni: first isolation in Peru. Am J Trop Med Hyg 1994; 51:533-7. [PMID: 7985744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Surveys were conducted from 1986 through 1992 to define the etiology and geographic distribution of human leishmaniasis in Peru. Lesion aspirates and skin biopsies were obtained from clinically diagnosed cases of leishmaniasis and tested for promastigotes by standard culture techniques. The isozyme profile of the isolates was determined by the cellulose acetate electrophoresis technique. Data indicated that the isozyme profiles for Leishmania isolates from six patients were similar to that of reference strains of L. lainsoni. These results are the first reported evidence of L. lainsoni and the first association of this parasite with human cases of cutaneous leishmaniasis in Peru.
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Affiliation(s)
- C M Lucas
- U.S. Naval Medical Research Institute Detachment, Lima, Peru
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13
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Hyams KC, Phillips IA, Tejada A, Wignall FS, Roberts CR, Escamilla J. Three-year incidence study of retroviral and viral hepatitis transmission in a Peruvian prostitute population. J Acquir Immune Defic Syndr (1988) 1993; 6:1353-7. [PMID: 7504724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A Peruvian female prostitute population was evaluated over a 3-year period to determine the incidence and risk factors of retroviral and viral hepatitis transmission. At three survey periods, a questionnaire was administered and serum samples were obtained. A total of 966 subjects were studied, with 34% followed for 38 months, 22% followed for 18 months, and 44% evaluated just once. On initial evaluation, 3 (0.3%) had HIV-1 antibody, 170 (17.6%) had HTLV-I antibody, 578 (59.8%) had anti-HBc, and 7 (0.7%) had antibody to hepatitis C virus. The mean annual incidence of HTLV-I and hepatitis B infection was 1.6% and 4.7%, respectively. Univariate and logistic regression analysis of prevalence data indicated an association between sexual activity and HTLV-I and hepatitis B infection, but no independent risk factors were identified in cohort analysis. Parenteral risk factors were not associated with transmission, except for a small percentage of subjects who may have acquired hepatitis B infection from blood transfusions. These findings suggest that there is a high incidence of HTLV-I and hepatitis B infection from heterosexual contact in this female prostitute population.
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Affiliation(s)
- K C Hyams
- Naval Medical Research Institute, Bethesda, Maryland 20852
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Tejada A, Chacón E, Bello S, Gil D, Laglera S, Fortuño B. [Pneumonia caused by Meningococcus diagnosed by bronchoalveolar lavage]. Enferm Infecc Microbiol Clin 1992; 10:504-5. [PMID: 1489784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Wignall FS, Hyams KC, Phillips IA, Escamilla J, Tejada A, Li O, Lopez F, Chauca G, Sanchez S, Roberts CR. Sexual transmission of human T-lymphotropic virus type I in Peruvian prostitutes. J Med Virol 1992; 38:44-8. [PMID: 1402830 DOI: 10.1002/jmv.1890380110] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The epidemiology of HTLV-I infection in female prostitutes was studied in a survey of 395 prostitutes from Callao, Peru (the port city of Lima), 72 prostitutes from Iquitos, Peru (another port city on the Amazon River), and 510 prenatal clinic patients from Lima. Prostitutes reported a mean of 8.8 years (range, 1-39 years) of active prostitution and a mean of 205 sexual contacts during the month prior to the study. The percentage of prostitutes with HTLV-I antibody (21.8%) was significantly higher than patients attending a prenatal clinic (3.1%; P less than .0001). The prevalence of HTLV-I antibody increased steadily with age in prostitutes, but no age trend was noted in prenatal patients. By multiple logistic regression analysis, an independent association was found between HTLV-I seropositivity and a history of prostitution in Callao, age, and positive syphilis serology when all 977 study subjects were evaluated. When prostitutes alone were analyzed, the number of years of exposure as a practicing prostitute was associated with HTLV-I seropositivity after controlling for age. These data indicate a greatly increased risk of HTLV-I infection in prostitutes in Callao, Peru, and suggest an association between sexual activity and HTLV-I transmission.
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Affiliation(s)
- F S Wignall
- U.S. Naval Medical Research Institute Detachment, Lima, Peru
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Abstract
The prevalence in Peru of antibody to hepatitis C virus (anti-HCV) was determined in a survey of populations living in the northern jungle region and in groups at high risk of parenterally and sexually transmitted diseases. All sera were initially screened for anti-HCV using commercial first and second generation ELISAs; repeatedly reactive sera were further verified with a second generation immunoblot assay. Serum samples were also tested by ELISA for HBsAg, anti-HBs, and anti-HBc. None of 2,111 sera obtained in the survey of jungle residents was positive for anti-HCV by immunoblot assay. Twelve of 16 HIV-1 antibody positive hemophiliacs, one of 103 HIV-1 antibody positive homosexuals, and three of 602 HIV-1 negative registered female prostitutes were positive for anti-HCV. A high prevalence of total markers of hepatitis B infection was found in all subjects, especially in older subjects and groups at high risk of parenterally and sexually transmitted diseases. The findings of this study indicate that seropositivity for hepatitis C virus antibody is uncommon in Peru except in high risk groups and suggest that the epidemiology of hepatitis C differs substantially from hepatitis B.
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Affiliation(s)
- K C Hyams
- Naval Medical Research Institute, Bethesda, Maryland
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Hyams KC, Phillips IA, Tejada A, Li O, Hermoza P, Lopez F, Alva P, Chauca G, Sanchez S, Wignall FS. Hepatitis B in a highly active prostitute population: evidence for a low risk of chronic antigenemia. J Infect Dis 1990; 162:295-8. [PMID: 2373870 DOI: 10.1093/infdis/162.2.295] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The epidemiology of hepatitis B in female prostitutes was studied in a cross-sectional survey of 467 prostitutes and 510 control prenatal clinic patients from Lima and Iquitos, Peru. Prostitutes reported a mean of 8.8 +/- 6.7 years of active prostitution and a mean of 205 +/- 137 sexual contacts in the month prior to the study. Hepatitis B surface antigen (HBsAg) was found in comparable percentages of prostitutes (1.7%) and controls (0.8%; P = .305). In contrast, seropositivity for both antigen and antibody markers (HBsAg, anti-HBs, or anti-hepatitis B core) was found in a significantly higher percentage of prostitutes than controls (67.0% vs. 10.0%; P less than .0001). By multivariate analysis, both prostitution (odds ratio [OR] 14.6) and the number of years of exposure as a prostitute (OR 3.2 for 10 years of exposure at age 35 years) were significantly associated with seropositivity for hepatitis B markers when adjusted for age. In this study, the prevalence of HBsAg was not substantially increased in highly active female prostitutes compared with the general population, even though hepatitis B transmission was greatly increased. These data suggest that in adult women with a high level of hepatitis B infection, hepatitis B antigenemia may not persist as frequently as previously indicated in studies of other populations.
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Affiliation(s)
- K C Hyams
- US Naval Medical Research Institute Detachment, Rockville, MD 20852
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Golenbock DT, Guerra J, Pfister J, Golubjatnikov R, Tejada A, Abugattas J, Kemper R, Maki DG. Absence of infection with human immunodeficiency virus in Peruvian prostitutes. AIDS Res Hum Retroviruses 1988; 4:493-9. [PMID: 3219237 DOI: 10.1089/aid.1988.4.493] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We serologically tested 140 female prostitutes (mean age, 30 years) from the port city of Callao, Peru, for evidence of infection with human immunodeficiency virus (HIV), Chlamydia trachomatis, Treponema pallidum, herpes simplex viruses (HSV) I and II, and hepatitis B virus. The women had worked as prostitutes for an average of 5 years; one-fourth serviced foreign visitors exclusively, mainly sailors. Only 4 women used condoms, and only 1 woman gave a history of parenteral narcotic abuse, although 53% were regularly exposed to unsterile needles outside the medical setting for injections of vitamins, antibiotics, or steroids; another 29% are thought to probably use unsterile needles. None of the 140 prostitutes screened was seropositive for HIV, despite a very high prevalence of antibody to T. pallidum (24%), C. trachomatis (97%), HSV I and II (100%), and hepatitis B (51%); 5% were HbsAg positive. These data indicate that HIV has not yet been introduced into female prostitutes in the Peruvian port city. We believe that widespread use of unsterile needles in developing countries, such as Peru, represents a serious health threat and will amplify the spread of HIV, once introduced.
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Affiliation(s)
- D T Golenbock
- Department of Medicine, University of Wisconsin School of Medicine, Madison
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Pesce H, Tejada A. [Epidemiology and clinical aspects of lepidopterism in Peru]. Bol Chil Parasitol 1969; 24:130-3. [PMID: 5406125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Apt W, Náquira C, Tejada A, Strozzi L. [Congenital transmission of Trypanosoma cruzi. II. In rats with acute and chronic infections]. Bol Chil Parasitol 1968; 23:9-15. [PMID: 4973971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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