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Lutz V, Chidiak M, Frouin R, Negri R, Dogliotti AI, Santamaria-Del-Angel E, Berghoff CF, Rojas J, Filipello C, Astor Y, Segura V, Gonzalez-Silvera A, Escudero L, Ledesma J, Ueyoshi K, Silva RI, Ruiz MG, Cozzolino E, Allega L, Tan J, Kampel M. Regulation of CO 2 by the sea in areas around Latin America in a context of climate change. Environ Monit Assess 2023; 195:417. [PMID: 36807829 DOI: 10.1007/s10661-023-10997-1] [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] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Anthropogenic activities are increasing the atmospheric carbon dioxide (CO2); around a third of the CO2 emitted by these activities has been taken up by the ocean. Nevertheless, this marine ecosystem service of regulation remains largely invisible to society, and not enough is known about regional differences and trends in sea-air CO2 fluxes (FCO2), especially in the Southern Hemisphere. The objectives of this work were as follows: first to put values of FCO2 integrated over the exclusive economic zones (EEZ) of five Latin-American countries (Argentina, Brazil, Mexico, Peru, and Venezuela) into perspective regarding total country-level greenhouse gases (GHG) emissions. Second, to assess the variability of two main biological factors affecting FCO2 at marine ecological time series (METS) in these areas. FCO2 over the EEZs were estimated using the NEMO model, and GHG emissions were taken from reports to the UN Framework Convention on Climate Change. For each METS, the variability in phytoplankton biomass (indexed by chlorophyll-a concentration, Chla) and abundance of different cell sizes (phy-size) were analyzed at two time periods (2000-2015 and 2007-2015). Estimates of FCO2 at the analyzed EEZs showed high variability among each other and non-negligible values in the context of greenhouse gas emissions. The trends observed at the METS indicated, in some cases, an increase in Chla (e.g., EPEA-Argentina) and a decrease in others (e.g., IMARPE-Peru). Evidence of increasing populations of small size-phytoplankton was observed (e.g., EPEA-Argentina, Ensenada-Mexico), which would affect the carbon export to the deep ocean. These results highlight the relevance of ocean health and its ecosystem service of regulation when discussing carbon net emissions and budgets.
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Affiliation(s)
- V Lutz
- CONICET-INIDEP, 7600, Mar del Plata, Argentina.
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina.
| | - M Chidiak
- Facultad de Ciencias Económicas, Instituto Interdisciplinario de Economía Política, Universidad de Buenos Aires, C1120AAQ, Buenos Aires, Argentina
| | - R Frouin
- Scripps Institution of Oceanography, University of California San Diego, 8810 Shellback Way, La Jolla, San Diego, CA, 92037, USA
| | - R Negri
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - A I Dogliotti
- Instituto de Astronomía Y Física del Espacio (IAFE), Pabellón IAFE, CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires C1428ZAA, Buenos Aires, Argentina
- Instituto Franco-Argentino Para El Estudio del Clima Y Sus Impactos (UMI-IFAECI, CNRSCONICET-UBA), C1428EGA, Buenos Aires, Argentina
| | - E Santamaria-Del-Angel
- Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, 22860, Ensenada, México
| | - C F Berghoff
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - J Rojas
- Fundación La Salle de Ciencias Naturales Campus Margarita (EDIMAR), Isla Margarita, Venezuela
| | - C Filipello
- Facultad de Ciencias Económicas, Instituto Interdisciplinario de Economía Política, Universidad de Buenos Aires, C1120AAQ, Buenos Aires, Argentina
| | - Y Astor
- Fundación La Salle de Ciencias Naturales Campus Margarita (EDIMAR), Isla Margarita, Venezuela
| | - V Segura
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - A Gonzalez-Silvera
- Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, 22860, Ensenada, México
| | - L Escudero
- Instituto del Mar del Perú, 07021, Callao, Perú
| | - J Ledesma
- Instituto del Mar del Perú, 07021, Callao, Perú
| | - K Ueyoshi
- Scripps Institution of Oceanography, University of California San Diego, 8810 Shellback Way, La Jolla, San Diego, CA, 92037, USA
| | - R I Silva
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - M G Ruiz
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - E Cozzolino
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - L Allega
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 7600, Mar del Plata, Argentina
| | - J Tan
- Scripps Institution of Oceanography, University of California San Diego, 8810 Shellback Way, La Jolla, San Diego, CA, 92037, USA
| | - M Kampel
- Instituto Nacional de Pesquisas Espaciais, Sao Jose Dos Campos, 12227-010, Brazil
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Balcarcel AM, Sánchez-Villagra MR, Segura V, Evin A. Singular patterns of skull shape and brain size change in the domestication of South American camelids. J Mammal 2021. [DOI: 10.1093/jmammal/gyaa135] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Patterns of selection in South American camelids (Lamini) and their unique demographic history establish the llama and alpaca as remarkable cases of domestication among large herd animals. Skull shape is implicated in many changes reported between wild and domestic taxa. We apply 3D geometric morphometric methods to describe skull shape, form, and size, differences among the four species of Lamini. In so doing, we test if domesticated Lamini exhibit changes similar to those in other domesticated groups: not only in the skull, but also in brain and body size. In contrast to other domesticated artiodactyls, very little change has occurred in domestic alpacas and llamas compared to their wild counterparts. Nevertheless, their differences are statistically significant and include a flatter cranium, inclined palate and increased airorhynchy in the domestics. Selection pressures that contrast with those on other herd animals, as well as recent population bottlenecks, likely have influenced the morphological patterns we note in Lamini. High-resolution 3D morphospace allows skull size, shape, and form (shape + size), to discriminate all four species, with form providing the greatest separation. These results help differentiate morphologically the Lamini, which in nature are distinguished mainly by body size, and provide an additional tool to archaeologists for distinction of wild and domestic remains. Most of our shape analyses suggest a marginally closer relationship between the alpaca and vicuña, to the exclusion of the guanaco, supporting the genetic relationships for this group. The expected brain size change between wild and domestic populations is lower than previously thought, with a 15.4% reduction in llama, and 6.8% reduction in alpaca. This is the lowest reduction in brain size thus far reported among domesticated Artiodactyla.
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Affiliation(s)
- A M Balcarcel
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse, Zurich, Switzerland
| | - M R Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse, Zurich, Switzerland
| | - V Segura
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas–Fundación Miguel Lillo, Miguel Lillo, San Miguel de Tucumán, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), AAH Buenos Aires, Argentina
| | - A Evin
- Institut des sciences de l’évolution, Université de Montpellier, CNRS, IRD, EPHE, Montpellier Cedex, France
- Department of Archaeology, Classics and Egyptology, University of Liverpool, Abercromby Square, Liverpool, United Kingdom
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Juan Ribelles A, Gargallo P, Ferriol C, Segura V, Yáñez Y, Juan B, Cañada AJ, Font de Mora J, Cañete A, Castel V. Distribution of segmental chromosomal alterations in neuroblastoma. Clin Transl Oncol 2020; 23:1096-1104. [PMID: 32948984 DOI: 10.1007/s12094-020-02497-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 07/21/2020] [Accepted: 09/05/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Neuroblastoma (NB) is a heterogeneous tumor with extremely diverse prognosis according to clinical and genetic factors such as specific combinations of chromosomal imbalances. METHODS Molecular karyotyping data from a national neuroblastic tumor database of 155 NB samples were analyzed and related to clinical data. RESULTS Segmental chromosomal alterations (SCA) were detected in 102 NB, whereas 45 only displayed numerical alterations. Incidence of SCA was higher in stage M (92%) and MYCN amplified (MNA) NB (96%). Presence of SCA was associated with older age, especially 1q gain and 3p deletion. 96% of the deaths were observed in the SCA group and 85% of the relapsed NB contained SCA. The alteration most commonly associated with a higher number of other segmental rearrangements was 11q deletion, followed by 4p deletion. Whole-chromosome 19 gain was associated with lower stages, absence of SCA and better outcome. CONCLUSIONS SCA are not randomly distributed and are concentrated on recurrent chromosomes. The most frequently affected chromosomes identify prognostic factors in specific risk groups. SCA are associated with older age and MNA. We have identified a small subset of patients with better outcome that share whole-chromosome 19 numeric gain, suggesting its use as a prognostic biomarker in NB.
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Affiliation(s)
- A Juan Ribelles
- Pediatric Oncology and Hematology Unit, Hospital U i P La Fe, Av. Fernando Abril Martorell, 106, Valencia, Spain.
| | - P Gargallo
- Clinical and Translational Oncology Research Group, Instituto de Investigación La Fe, Valencia, Spain
| | - C Ferriol
- Universitat de València, Valencia, Spain
| | - V Segura
- Clinical and Translational Oncology Research Group, Instituto de Investigación La Fe, Valencia, Spain
| | - Y Yáñez
- Clinical and Translational Oncology Research Group, Instituto de Investigación La Fe, Valencia, Spain
| | - B Juan
- Universitat de València, Valencia, Spain
| | - A J Cañada
- Biostatistics Department, Instituto de Investigación La Fe, Valencia, Spain
| | - J Font de Mora
- Clinical and Translational Oncology Research Group, Instituto de Investigación La Fe, Valencia, Spain
| | - A Cañete
- Pediatric Oncology and Hematology Unit, Hospital U i P La Fe, Av. Fernando Abril Martorell, 106, Valencia, Spain
| | - V Castel
- Clinical and Translational Oncology Research Group, Instituto de Investigación La Fe, Valencia, Spain
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Gargallo P, Yáñez Y, Segura V, Juan A, Torres B, Balaguer J, Oltra S, Castel V, Cañete A. Li-Fraumeni syndrome heterogeneity. Clin Transl Oncol 2019; 22:978-988. [PMID: 31691207 DOI: 10.1007/s12094-019-02236-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 08/29/2019] [Accepted: 10/21/2019] [Indexed: 02/07/2023]
Abstract
Clinical variability is commonly seen in Li-Fraumeni syndrome. Phenotypic heterogeneity is present among different families affected by the same pathogenic variant in TP53 gene and among members of the same family. However, causes of this huge clinical spectrum have not been studied in depth. TP53 type mutation, polymorphic variants in TP53 gene or in TP53-related genes, copy number variations in particular regions, and/or epigenetic deregulation of TP53 expression might be responsible for clinical heterogeneity. In this review, recent advances in the understanding of genetic and epigenetic aspects influencing Li-Fraumeni phenotype are discussed.
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Affiliation(s)
- P Gargallo
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain.
| | - Y Yáñez
- Clinical and Translational Oncology Research Group, La Fe Hospital, Valencia, Spain
| | - V Segura
- Clinical and Translational Oncology Research Group, La Fe Hospital, Valencia, Spain
| | - A Juan
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - B Torres
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - J Balaguer
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - S Oltra
- Genetics Unit, La Fe Hospital, Valencia, Spain.,Genetics Department, Valencia University, Valencia, Spain
| | - V Castel
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - A Cañete
- Pediatric Oncology, La Fe Hospital, Av. Fernando Abril Martorell 106, 46026, Valencia, Spain
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5
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Perez Gracia J, Pajares M, Fusco J, Andueza M, Segura V, Mora M, Guruceaga E, Sanchez Bayona R, Gurpide A, Lopez-Picazo J, Gil-Bazo I, de Torres J, Zulueta J, Pio R, Melero I, Sanmamed M, Rodriguez-Ruiz M, Gonzalez Neira A, Montuenga L, Patiño-Garcia A. Characterization through whole exome sequencing of individuals presenting extreme phenotypes of high and low risk to develop tobacco-induced non-small lung cancer (NSCLC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gargallo P, Oltra JS, Yáñez Y, Segura V, Balaguer J, Cañete A. Retinoblastoma: towards an earlier diagnosis. ACTA ACUST UNITED AC 2018; 93:439-443. [PMID: 29929761 DOI: 10.1016/j.oftal.2018.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/15/2018] [Revised: 04/26/2018] [Accepted: 05/09/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The number of enucleations and visual sequels due to retinoblastoma is high. The aim of this study was to evaluate the different diagnostic aspects and propose strategies that might improve the clinical management of this condition. METHOD A retrospective study was conducted on 38 patients with retinoblastoma studied genetically (29 unilateral, 9 bilateral). The evaluation included: age of onset, clinical signs, and time since onset, number of enucleations, time to diagnosis, and survival at 5 years. RESULTS Leukocoria was the main clinical sign (present in 90% of cases). The mean diagnostic delay was 3.2 months. Among the unilateral cases, the eyes were enucleated in 76%, and 55% in the bilateral forms. Only one death was found among the 25 patients followed-up for at least 5 years. CONCLUSIONS Retinoblastoma diagnostic and treatment strategies need to be updated. Good coordination between paediatricians and ophthalmologists is essential for this. Its management in reference centres, which have the necessary technology and experience, should contribute to increase the rate of organ preservation.
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Affiliation(s)
- P Gargallo
- Grupo de Investigación Clínica y Traslacional en Cáncer, Instituto de Investigación Sanitaria La Fe, Valencia, España.
| | - J S Oltra
- Servicio de Genética Médica, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Y Yáñez
- Grupo de Investigación Clínica y Traslacional en Cáncer, Instituto de Investigación Sanitaria La Fe, Valencia, España
| | - V Segura
- Grupo de Investigación Clínica y Traslacional en Cáncer, Instituto de Investigación Sanitaria La Fe, Valencia, España
| | - J Balaguer
- Oncología Pediátrica, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - A Cañete
- Oncología Pediátrica, Hospital Universitario y Politécnico La Fe, Valencia, España
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Talamillo A, Grande L, Ruiz-Ontañon P, Velasquez C, Mollinedo P, Torices S, Sanchez-Gomez P, Aznar A, Esparis-Ogando A, Lopez-Lopez C, Lafita C, Berciano MT, Montero JA, Vazquez-Barquero A, Segura V, Villagra NT, Pandiella A, Lafarga M, Leon J, Martinez-Climent JA, Sanz-Moreno V, Fernandez-Luna JL. ODZ1 allows glioblastoma to sustain invasiveness through a Myc-dependent transcriptional upregulation of RhoA. Oncogene 2017; 36:1733-1744. [PMID: 27641332 DOI: 10.1038/onc.2016.341] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 08/01/2016] [Accepted: 08/10/2016] [Indexed: 02/06/2023]
Abstract
Long-term survival remains low for most patients with glioblastoma (GBM), which reveals the need for markers of disease outcome and novel therapeutic targets. We describe that ODZ1 (also known as TENM1), a type II transmembrane protein involved in fetal brain development, plays a crucial role in the invasion of GBM cells. Differentiation of glioblastoma stem-like cells drives the nuclear translocation of an intracellular fragment of ODZ1 through proteolytic cleavage by signal peptide peptidase-like 2a. The intracellular fragment of ODZ1 promotes cytoskeletal remodelling of GBM cells and invasion of the surrounding environment both in vitro and in vivo. Absence of ODZ1 by gene deletion or downregulation of ODZ1 by small interfering RNAs drastically reduces the invasive capacity of GBM cells. This activity is mediated by an ODZ1-triggered transcriptional pathway, through the E-box binding Myc protein, that promotes the expression and activation of Ras homolog family member A (RhoA) and subsequent activation of Rho-associated, coiled-coil containing protein kinase (ROCK). Overexpression of ODZ1 in GBM cells reduced survival of xenografted mice. Consistently, analysis of 122 GBM tumour samples revealed that the number of ODZ1-positive cells inversely correlated with overall and progression-free survival. Our findings establish a novel marker of invading GBM cells and consequently a potential marker of disease progression and a therapeutic target in GBM.
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Affiliation(s)
- A Talamillo
- Unidad de Genética, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - L Grande
- Unidad de Genética, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - P Ruiz-Ontañon
- Unidad de Genética, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - C Velasquez
- Servicio de Neurocirugía, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - P Mollinedo
- Unidad de Genética, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - S Torices
- Unidad de Genética, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - P Sanchez-Gomez
- Unidad de Neuro-Oncología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - A Aznar
- Centro para la Investigación Médica Aplicada (CIMA), Pamplona, Spain
| | - A Esparis-Ogando
- Centro de Investigación del Cáncer (CSIC-USAL), Salamanca, Spain
| | - C Lopez-Lopez
- Servicio de Oncología Médica, Hospital Valdecilla-IDIVAL, Santander, Spain
| | - C Lafita
- Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), CSIC-Universidad de Cantabria, Santander, Spain
| | - M T Berciano
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria, Santander, Spain
| | - J A Montero
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria, Santander, Spain
| | | | - V Segura
- Centro para la Investigación Médica Aplicada (CIMA), Pamplona, Spain
| | - N T Villagra
- Servicio de Anatomía Patológica, Hospital Valdecilla and Instituto de Investigación Valdecilla (IDIVAL), Santander, Spain
| | - A Pandiella
- Centro de Investigación del Cáncer (CSIC-USAL), Salamanca, Spain
| | - M Lafarga
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria, Santander, Spain
| | - J Leon
- Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), CSIC-Universidad de Cantabria, Santander, Spain
| | | | - V Sanz-Moreno
- Randall Division of Cell and Molecular Biophysics, School of Biomedical and Health Sciences, King's College London, London, UK
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Nuñez M, Nuñez E, Lozano L, Segur J, Montañana J, Segura V, Salo S, Alemany X, Sastre S. THU0624 Sleep Quality in Patients with Severe Knee Osteroarthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Nicolás D, Esteve A, Cuadros A, Campbell CNJ, Tural C, Podzamczer D, Murillas J, Homar F, Segura F, Force L, Vilaró J, Masabeu À, Garcia I, Mercadal J, Montoliu A, Ferrer E, Riera M, Cifuentes C, Ambrosioni J, Navarro G, Manzardo C, Clotet B, Gatell JM, Casabona J, Miró JM, Murillas J, Manzardo C, Masabeu A, Mercadal J, Cifuentes C, Dalmau D, Domingo P, Falcó V, Curran A, Agustí C, Montoliu A, Pérez I, Curto J, Gargoulas F, Gómez A, Rubia JC, Zamora L, Blanco JL, Garcia-Alcaide F, Martínez E, Mallolas J, Llibre JM, Sirera G, Romeu J, Jou A, Negredo E, Saumoy M, Imaz A, Bolao F, Cabellos C, Peña C, DiYacovo S, Van Den Eynde E, Sala M, Cervantes M, Amengual MJ, Navarro M, Segura V, Barrufet P, Molina J, Alvaro M, Payeras T, Gracia Mateo M, Fernández J. Safe Reduction in CD4 Cell Count Monitoring in Stable, Virally Suppressed Patients With HIV Infection or HIV/Hepatitis C Virus Coinfection. Clin Infect Dis 2016; 62:1578-1585. [PMID: 27126346 DOI: 10.1093/cid/ciw157] [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] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 03/09/2016] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND It has been suggested that routine CD4 cell count monitoring in human immunodeficiency virus (HIV)-monoinfected patients with suppressed viral loads and CD4 cell counts >300 cell/μL could be reduced to annual. HIV/hepatitis C virus (HCV) coinfection is frequent, but evidence supporting similar reductions in CD4 cell count monitoring is lacking for this population. We determined whether CD4 cell count monitoring could be reduced in monoinfected and coinfected patients by estimating the probability of maintaining CD4 cell counts ≥200 cells/µL during continuous HIV suppression. METHODS The PISCIS Cohort study included data from 14 539 patients aged ≥16 years from 10 hospitals in Catalonia and 2 in the Balearic Islands (Spain) since January 1998. All patients who had at least one period of 6 months of continuous HIV suppression were included in this analysis. Cumulative probabilities with 95% confidence intervals were calculated using the Kaplan-Meier estimator stratified by the initial CD4 cell count at the period of continuous suppression initiation. RESULTS A total of 8695 patients were included. CD4 cell counts fell to <200 cells/µL in 7.4% patients, and the proportion was lower in patients with an initial count >350 cells/µL (1.8%) and higher in those with an initial count of 200-249 cells/µL (23.1%). CD4 cell counts fell to <200 cells/µL in 5.7% of monoinfected and 11.1% of coinfected patients. Of monoinfected patients with an initial CD4 cell count of 300-349 cells/µL, 95.6% maintained counts ≥200 cells/µL. In the coinfected group with the same initial count, this rate was lower, but 97.6% of coinfected patients with initial counts >350 cells/µL maintained counts ≥200 cells/µL. CONCLUSIONS From our data, it can be inferred that CD4 cell count monitoring can be safely performed annually in HIV-monoinfected patients with CD4 cell counts >300 cells/µL and HIV/HCV-coinfected patients with counts >350 cells/µL.
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Affiliation(s)
- David Nicolás
- Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona
| | - Anna Esteve
- Centre for Epidemiological Studies on HIV/STI in Catalonia - ASPC, CIBER Epidemiologia y Salud Publica
| | | | - Colin N J Campbell
- Centre for Epidemiological Studies on HIV/STI in Catalonia - ASPC, CIBER Epidemiologia y Salud Publica
| | - Cristina Tural
- Fundació Lluita Contra la Sida, Fundacio Irsicaixa, Hospital Universitari Germans Trias i Pujol
| | - Daniel Podzamczer
- Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, Hospitalet de Llobregat
| | | | | | - Ferrán Segura
- Corporació Sanitària i Universitària Parc Taulí, Universitat Autónoma de Barcelona
| | | | | | | | | | | | - Alexandra Montoliu
- Centre for Epidemiological Studies on HIV/STI in Catalonia - ASPC, CIBER Epidemiologia y Salud Publica
| | - Elena Ferrer
- Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, Hospitalet de Llobregat
| | | | | | - Juan Ambrosioni
- Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona
| | - Gemma Navarro
- Corporació Sanitària i Universitària Parc Taulí, Universitat Autónoma de Barcelona
| | - Christian Manzardo
- Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona
| | - Bonaventura Clotet
- Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, Hospitalet de Llobregat
| | - Josep M Gatell
- Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona
| | - Jordi Casabona
- Centre for Epidemiological Studies on HIV/STI in Catalonia - ASPC, CIBER Epidemiologia y Salud Publica
| | - José M Miró
- Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona
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Faivre-Rampant P, Zaina G, Jorge V, Giacomello S, Segura V, Scalabrin S, Guérin V, De Paoli E, Aluome C, Viger M, Cattonaro F, Payne A, PaulStephenRaj P, Le Paslier MC, Berard A, Allwright MR, Villar M, Taylor G, Bastien C, Morgante M. New resources for genetic studies in Populus nigra: genome-wide SNP discovery and development of a 12k Infinium array. Mol Ecol Resour 2016; 16:1023-36. [PMID: 26929265 DOI: 10.1111/1755-0998.12513] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 09/22/2015] [Revised: 12/17/2015] [Accepted: 12/22/2015] [Indexed: 11/30/2022]
Abstract
Whole genome resequencing of 51 Populus nigra (L.) individuals from across Western Europe was performed using Illumina platforms. A total number of 1 878 727 SNPs distributed along the P. nigra reference sequence were identified. The SNP calling accuracy was validated with Sanger sequencing. SNPs were selected within 14 previously identified QTL regions, 2916 expressional candidate genes related to rust resistance, wood properties, water-use efficiency and bud phenology and 1732 genes randomly spread across the genome. Over 10 000 SNPs were selected for the construction of a 12k Infinium Bead-Chip array dedicated to association mapping. The SNP genotyping assay was performed with 888 P. nigra individuals. The genotyping success rate was 91%. Our high success rate was due to the discovery panel design and the stringent parameters applied for SNP calling and selection. In the same set of P. nigra genotypes, linkage disequilibrium throughout the genome decayed on average within 5-7 kb to half of its maximum value. As an application test, ADMIXTURE analysis was performed with a selection of 600 SNPs spread throughout the genome and 706 individuals collected along 12 river basins. The admixture pattern was consistent with genetic diversity revealed by neutral markers and the geographical distribution of the populations. These newly developed SNP resources and genotyping array provide a valuable tool for population genetic studies and identification of QTLs through natural-population based genetic association studies in P. nigra.
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Affiliation(s)
| | - G Zaina
- DI4A, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - V Jorge
- INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - S Giacomello
- IGA, Parco Scientifico e Tecnologico Luigi Danieli, via Jacopo Linussio 51, 33100, Udine, Italy
| | - V Segura
- INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - S Scalabrin
- IGA, Parco Scientifico e Tecnologico Luigi Danieli, via Jacopo Linussio 51, 33100, Udine, Italy
| | - V Guérin
- INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - E De Paoli
- IGA, Parco Scientifico e Tecnologico Luigi Danieli, via Jacopo Linussio 51, 33100, Udine, Italy
| | - C Aluome
- INRA, US1279 EPGV, CEA-IG/CNG, F-91057, Evry, France.,INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - M Viger
- Centre For Biological Sciences, University of Southampton, Life Sciences, SO17 1BJ, Southampton, UK
| | - F Cattonaro
- IGA, Parco Scientifico e Tecnologico Luigi Danieli, via Jacopo Linussio 51, 33100, Udine, Italy
| | - A Payne
- Centre For Biological Sciences, University of Southampton, Life Sciences, SO17 1BJ, Southampton, UK
| | | | | | - A Berard
- INRA, US1279 EPGV, CEA-IG/CNG, F-91057, Evry, France
| | - M R Allwright
- Centre For Biological Sciences, University of Southampton, Life Sciences, SO17 1BJ, Southampton, UK
| | - M Villar
- INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - G Taylor
- Centre For Biological Sciences, University of Southampton, Life Sciences, SO17 1BJ, Southampton, UK
| | - C Bastien
- INRA, UR 0588 AGPF, Centre INRA Val de Loire, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, 45075, Orléans, France
| | - M Morgante
- DI4A, University of Udine, via delle Scienze 206, 33100, Udine, Italy.,IGA, Parco Scientifico e Tecnologico Luigi Danieli, via Jacopo Linussio 51, 33100, Udine, Italy
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11
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Berlanga P, Segura V, Juan Ribelles A, Sánchez de Toledo P, Acha T, Castel V, Cañete A. Paediatric tumour boards in Spain: a national survey. Clin Transl Oncol 2015; 18:931-6. [PMID: 26693730 DOI: 10.1007/s12094-015-1466-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 07/21/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE Multidisciplinary tumour boards (MDTs) are conducted worldwide for the management of patients with cancer, and they deliver a higher standard of care by simultaneously involving different specialists in diagnosis and treatment planning. However, information of paediatric MDTs functioning is scarce. A pilot study was conducted in Spain in the frame of the European Expert Paediatric Oncology Reference Network for Diagnostics and Treatment (ExPO-r-Net). METHODS A specific questionnaire was designed regarding various features of MDT practice. Data collected included information on the centres and the team, infrastructure for meetings, MDT organization/logistics and clinical decision-making. The survey was distributed to all Paediatric Oncology Units that register patients in the Spanish Registry of Childhood Tumours (RETI-SEHOP). RESULTS 32 out of 43 contacted centres responded the questionnaire (74 % response rate; 88 % response rate for centres with >25 new patients/year). All units with >25 new patients/year have a dedicated Paediatric MDT compared to 76 % of units with ≤25 new patients/year. MDTs should be improved at institutional level by clear protected time in service planning for all specialists involved, incentives for attendance and attendance registration. Clinical decision-making process and follow-up of recommendation adherence should be assessed and potential legal responsibilities for physicians participating in Tumour Board defined. Network collaboration through virtual MDTs, using available videoconferencing tools, is an opportunity to share expertise among centres.
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Affiliation(s)
- P Berlanga
- Paediatric Oncology Unit, Hospital Universitario y Politécnico La Fe, Valencia, Spain. .,Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
| | - V Segura
- Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - A Juan Ribelles
- Paediatric Oncology Unit, Hospital Universitario y Politécnico La Fe, Valencia, Spain.,Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - P Sánchez de Toledo
- Paediatric Oncology Unit, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - T Acha
- Paediatric Oncology Unit, Hospital Carlos Haya, Málaga, Spain
| | - V Castel
- Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - A Cañete
- Paediatric Oncology Unit, Hospital Universitario y Politécnico La Fe, Valencia, Spain.,Instituto de Investigación Sanitaria La Fe, Valencia, Spain
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12
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Guillaumet G, Marmol MJ, Sola M, Guzman S, Cuenca L, Segura V. Strategies which ensure our patient’s safety. Intensive Care Med Exp 2015. [PMCID: PMC4798102 DOI: 10.1186/2197-425x-3-s1-a76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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13
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Cuadrado-Tejedor M, Garcia-Barroso C, Sanzhez-Arias J, Mederos S, Rabal O, Ugarte A, Franco R, Pascual-Lucas M, Segura V, Perea G, Oyarzabal J, Garcia-Osta A. Concomitant histone deacetylase and phosphodiesterase 5 inhibition synergistically prevents the disruption in synaptic plasticity and it reverses cognitive impairment in a mouse model of Alzheimer's disease. Clin Epigenetics 2015; 7:108. [PMID: 26457123 PMCID: PMC4599811 DOI: 10.1186/s13148-015-0142-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [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: 05/05/2015] [Accepted: 09/28/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Given the implication of histone acetylation in memory processes, histone deacetylase inhibitors (HDACIs) have been postulated as potential modulators of cognitive impairment in Alzheimer's disease (AD). However, dose-dependent side effects have been described in patients with the currently available broad-spectrum HDACIs, explaining why their therapeutic potential has not been realized for chronic diseases. Here, by simultaneously targeting two independent enzyme activities, histone deacetylase (HDAC) and phosphodiesterase-5 (PDE5), we propose a novel mode of inhibitory action that might increase the therapeutic specificity of HDACIs. RESULTS The combination of vorinostat, a pan-HDACI, and tadalafil, a PDE5 inhibitor, rescued the long-term potentiation impaired in slices from APP/PS1 mice. When administered in vivo, the combination of these drugs alleviated the cognitive deficits in AD mice, as well as the amyloid and tau pathology, and it reversed the reduced dendritic spine density on hippocampal neurons. Significantly, the combination of vorinostat and tadalafil was more effective than each drug alone, both against the symptoms and in terms of disease modification, and importantly, these effects persisted after a 4-week washout period. CONCLUSIONS The results highlight the pharmacological potential of a combination of molecules that inhibit HDAC and PDE5 as a therapeutic approach for AD treatment.
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Affiliation(s)
- M Cuadrado-Tejedor
- Neurobiology of Alzheimer's Disease, Neurosciences Division, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 31008 Pamplona, Spain.,Anatomy Department, School of Medicine, University of Navarra, Pamplona, Spain
| | - C Garcia-Barroso
- Neurobiology of Alzheimer's Disease, Neurosciences Division, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 31008 Pamplona, Spain
| | - J Sanzhez-Arias
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 55, 31008 Pamplona, Spain
| | - S Mederos
- Cajal Institute, CSIC, Madrid, Spain
| | - O Rabal
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 55, 31008 Pamplona, Spain
| | - A Ugarte
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 55, 31008 Pamplona, Spain
| | - R Franco
- Neurobiology of Alzheimer's Disease, Neurosciences Division, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 31008 Pamplona, Spain.,Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - M Pascual-Lucas
- Neurobiology of Alzheimer's Disease, Neurosciences Division, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 31008 Pamplona, Spain
| | - V Segura
- Bioinformatics Unit, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - G Perea
- Cajal Institute, CSIC, Madrid, Spain
| | - J Oyarzabal
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 55, 31008 Pamplona, Spain
| | - A Garcia-Osta
- Neurobiology of Alzheimer's Disease, Neurosciences Division, Center for Applied Medical Research (CIMA), University of Navarra, Pio XII, 31008 Pamplona, Spain
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14
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Nuñez M, Nuñez E, Lozano L, Sastre S, Garcia-Cardό A, Segur J, Salό S, Segura V, Sapena N, Alemany X, Montañana J, Cabestany J. FRI0360 User's Experience of a Home- Based Fall-Detecting Device. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Nuñez E, Sastre S, Lozano L, Garcia-Cardό A, Salό S, Segur J, Sapena N, Segura V, Montañana J, Alemany X, Moreno J, Nuñez M. AB1145 Health-Related Quality of Life in the Elderly Suffering Falls: The Influence of Beliefs on Health and the Fear of Falling. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Nuñez M, Sastre S, Nuñez E, Montañana J, Segura V, Lozano L, Segur J, Alemany X, Moreno J. AB1146 The Relationship Between Function and the Periarticular Knee Structure Measured by Ultrasound in Obese Patients with Knee Osteoarthritis on a Waiting List for Total Knee Replacement. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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17
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Flacco N, Segura V, Perez-Aso M, Estrada S, Seller JF, Jiménez-Altayó F, Noguera MA, D'Ocon P, Vila E, Ivorra MD. Different β-adrenoceptor subtypes coupling to cAMP or NO/cGMP pathways: implications in the relaxant response of rat conductance and resistance vessels. Br J Pharmacol 2014; 169:413-25. [PMID: 23373597 DOI: 10.1111/bph.12121] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 01/07/2013] [Accepted: 01/18/2013] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE To analyse the relative contribution of β1 -, β2 - and β3 -adrenoceptors (Adrb) to vasodilatation in conductance and resistance vessels, assessing the role of cAMP and/or NO/cGMP signalling pathways. EXPERIMENTAL APPROACH Rat mesenteric resistance artery (MRA) and aorta were used to analyse the Adrb expression by real-time-PCR and immunohistochemistry, and for the pharmacological characterization of Adrb-mediated activity by wire myography and tissue nucleotide accumulation. KEY RESULTS The mRNAs and protein for all Adrb were identified in endothelium and/or smooth muscle cells (SMCs) in both vessels. In MRA, Adrb1 signalled through cAMP, Adrb3 through both cAMP and cGMP, but Adrb2, did not activate nucleotide formation; isoprenaline relaxation was inhibited by propranolol (β1 , β2 ), CGP20712A (β1 ), and SQ22536 (adenylyl cyclase inhibitor), but not by ICI118,551 (β2 ), SR59230A (β3 ), ODQ (soluble guanylyl cyclase inhibitor), L-NAME or endothelium removal. In aorta, Adrb1 signalled through cAMP, while β2 - and β3 -subtypes through cGMP; isoprenaline relaxation was inhibited by propranolol, ICI118,551, ODQ, L-NAME, and to a lesser extent, by endothelium removal. CL316243 (β3 -agonist) relaxed aorta, but not MRA. CONCLUSION AND IMPLICATION Despite all three Adrb subtypes being found in both vessels, Adrb1, located in SMCs and acting through the adenylyl cyclase/cAMP pathway, are primarily responsible for vasodilatation in MRA. However, Adrb-mediated vasodilatation in aorta is driven by endothelial Adrb2 and Adrb3, but also by the Adrb2 present in SMCs, and is coupled to the NO/cGMP pathway. These results could help to understand the different physiological roles played by Adrb signalling in regulating conductance and resistance vessels.
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Affiliation(s)
- N Flacco
- Departament de Farmacologia, Facultat de Farmacia, Universitat de Valencia, Burjassot, Spain
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18
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Nuñez M, Sastre S, Nuñez E, Saulό A, Segur J, Maurits N, Moreno M, Cabestany J, Segarra J, Segura V, Lozano L, Alemany X, Maculé F, Suso S. SAT0435 Knee Osteoarthritis and Periarticular Structure Quantified by Ultrasound. A Case-Control Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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19
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Perez-Aso M, Segura V, Montó F, Barettino D, Noguera MA, Milligan G, D'Ocon P. The three α1-adrenoceptor subtypes show different spatio-temporal mechanisms of internalization and ERK1/2 phosphorylation. Biochim Biophys Acta 2013; 1833:2322-33. [PMID: 23797059 DOI: 10.1016/j.bbamcr.2013.06.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 06/12/2013] [Accepted: 06/13/2013] [Indexed: 12/21/2022]
Abstract
We analyzed the kinetic and spatial patterns characterizing activation of the MAP kinases ERK 1 and 2 (ERK1/2) by the three α1-adrenoceptor (α1-AR) subtypes in HEK293 cells and the contribution of two different pathways to ERK1/2 phosphorylation: protein kinase C (PKC)-dependent ERK1/2 activation and internalization-dependent ERK1/2 activation. The different pathways of phenylephrine induced ERK phosphorylation were determined by western blot, using the PKC inhibitor Ro 31-8425, the receptor internalization inhibitor concanavalin A and the siRNA targeting β-arrestin 2. Receptor internalization properties were studied using CypHer5 technology and VSV-G epitope-tagged receptors. Activation of α1A- and α1B-ARs by phenylephrine elicited rapid ERK1/2 phosphorylation that was directed to the nucleus and inhibited by Ro 31-8425. Concomitant with phenylephrine induced receptor internalization α1A-AR, but not α1B-AR, produced a maintained and PKC-independent ERK phosphorylation, which was restricted to the cytosol and inhibited by β-arrestin 2 knockdown or concanavalin A treatment. α1D-AR displayed constitutive ERK phosphorylation, which was reduced by incubation with prazosin or the selective α1D antagonist BMY7378. Following activation by phenylephrine, α1D-AR elicited rapid, transient ERK1/2 phosphorylation that was restricted to the cytosol and not inhibited by Ro 31-8425. Internalization of the α1D-AR subtype was not observed via CypHer5 technology. The three α1-AR subtypes present different spatio-temporal patterns of receptor internalization, and only α1A-AR stimulation translates to a late, sustained ERK1/2 phosphorylation that is restricted to the cytosol and dependent on β-arrestin 2 mediated internalization.
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Affiliation(s)
- M Perez-Aso
- Departament de Farmacologia, Universitat de València, Spain
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20
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Segura V, Medina-Aunon JA, Guruceaga E, Gharbi SI, González-Tejedo C, Sánchez del Pino MM, Canals F, Fuentes M, Casal JI, Martínez-Bartolomé S, Elortza F, Mato JM, Arizmendi JM, Abian J, Oliveira E, Gil C, Vivanco F, Blanco F, Albar JP, Corrales FJ. Spanish human proteome project: dissection of chromosome 16. J Proteome Res 2012; 12:112-22. [PMID: 23234512 DOI: 10.1021/pr300898u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The Chromosome 16 Consortium forms part of the Human Proteome Project that aims to develop an entire map of the proteins encoded by the human genome following a chromosome-centric strategy (C-HPP) to make progress in the understanding of human biology in health and disease (B/D-HPP). A Spanish consortium of 16 laboratories was organized into five working groups: Protein/Antibody microarrays, protein expression and Peptide Standard, S/MRM, Protein Sequencing, Bioinformatics and Clinical healthcare, and Biobanking. The project is conceived on a multicenter configuration, assuming the standards and integration procedures already available in ProteoRed-ISCIII, which is encompassed within HUPO initiatives. The products of the 870 protein coding genes in chromosome 16 were analyzed in Jurkat T lymphocyte cells, MCF-7 epithelial cells, and the CCD18 fibroblast cell line as it is theoretically expected that most chromosome 16 protein coding genes are expressed in at least one of these. The transcriptome and proteome of these cell lines was studied using gene expression microarray and shotgun proteomics approaches, indicating an ample coverage of chromosome 16. With regard to the B/D section, the main research areas have been adopted and a biobanking initiative has been designed to optimize methods for sample collection, management, and storage under normalized conditions and to define QC standards. The general strategy of the Chr-16 HPP and the current state of the different initiatives are discussed.
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Affiliation(s)
- V Segura
- ProteoRed-ISCIII, Center for Applied Medical Research, CIMA, University of Navarra, Pamplona, Spain
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21
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Vilas-Zornoza A, Agirre X, Abizanda G, Moreno C, Segura V, De Martino Rodriguez A, José-Eneriz ES, Miranda E, Martín-Subero JI, Garate L, Blanco-Prieto MJ, García de Jalón JA, Rio P, Rifón J, Cigudosa JC, Martinez-Climent JA, Román-Gómez J, Calasanz MJ, Ribera JM, Prósper F. Preclinical activity of LBH589 alone or in combination with chemotherapy in a xenogeneic mouse model of human acute lymphoblastic leukemia. Leukemia 2012; 26:1517-26. [PMID: 22307227 DOI: 10.1038/leu.2012.31] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Histone deacetylases (HDACs) have been identified as therapeutic targets due to their regulatory function in chromatin structure and organization. Here, we analyzed the therapeutic effect of LBH589, a class I-II HDAC inhibitor, in acute lymphoblastic leukemia (ALL). In vitro, LBH589 induced dose-dependent antiproliferative and apoptotic effects, which were associated with increased H3 and H4 histone acetylation. Intravenous administration of LBH589 in immunodeficient BALB/c-RAG2(-/-)γc(-/-) mice in which human-derived T and B-ALL cell lines were injected induced a significant reduction in tumor growth. Using primary ALL cells, a xenograft model of human leukemia in BALB/c-RAG2(-/-)γc(-/-) mice was established, allowing continuous passages of transplanted cells to several mouse generations. Treatment of mice engrafted with T or B-ALL cells with LBH589 induced an in vivo increase in the acetylation of H3 and H4, which was accompanied with prolonged survival of LBH589-treated mice in comparison with those receiving vincristine and dexamethasone. Notably, the therapeutic efficacy of LBH589 was significantly enhanced in combination with vincristine and dexamethasone. Our results show the therapeutic activity of LBH589 in combination with standard chemotherapy in pre-clinical models of ALL and suggest that this combination may be of clinical value in the treatment of patients with ALL.
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Nogueira L, Ruiz-Ontañon P, Vazquez-Barquero A, Lafarga M, Berciano MT, Aldaz B, Grande L, Casafont I, Segura V, Robles EF, Suarez D, Garcia LF, Martinez-Climent JA, Fernandez-Luna JL. Blockade of the NFκB pathway drives differentiating glioblastoma-initiating cells into senescence both in vitro and in vivo. Oncogene 2011; 30:3537-48. [PMID: 21423202 DOI: 10.1038/onc.2011.74] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Glioblastoma multiforme is one of the most devastating cancers and presents unique challenges to therapy because of its aggressive behavior. Cancer-initiating or progenitor cells have been described to be the only cell population with tumorigenic capacity in glioblastoma. Therefore, effective therapeutic strategies targeting these cells or the early precursors may be beneficial. We have established different cultures of glioblastoma-initiating cells (GICs) derived from surgical specimens and found that, after induction of differentiation, the NFκB transcriptional pathway was activated, as determined by analyzing key proteins such as p65 and IκB and the upregulation of a number of target genes. We also showed that blockade of nuclear factor (NF)κB signaling in differentiating GICs by different genetic strategies or treatment with small-molecule inhibitors, promoted replication arrest and senescence. This effect was partly mediated by reduced levels of the NFκB target gene cyclin D1, because its downregulation by RNA interference reproduced a similar phenotype. Furthermore, these results were confirmed in a xenograft model. Intravenous treatment of immunodeficient mice bearing human GIC-derived tumors with a novel small-molecule inhibitor of the NFκB pathway induced senescence of tumor cells but no ultrastructural alterations of the brain parenchyma were detected. These findings reveal that activation of NFκB may keep differentiating GICs from acquiring a mature postmitotic phenotype, thus allowing cell proliferation, and support the rationale for therapeutic strategies aimed to promote premature senescence of differentiating GICs by blocking key factors within the NFκB pathway.
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Affiliation(s)
- L Nogueira
- Molecular Genetics Unit, Hospital Valdecilla, and Instituto de Formacion e Investigacion Marques de Valdecilla (IFIMAV), Av Cardenal Herrera Oria s/n, Santander, Spain
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23
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Tordera RM, Garcia-García AL, Elizalde N, Segura V, Aso E, Venzala E, Ramírez MJ, Del Rio J. Chronic stress and impaired glutamate function elicit a depressive-like phenotype and common changes in gene expression in the mouse frontal cortex. Eur Neuropsychopharmacol 2011; 21:23-32. [PMID: 20937555 DOI: 10.1016/j.euroneuro.2010.06.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 06/23/2010] [Accepted: 06/25/2010] [Indexed: 12/24/2022]
Abstract
Major depression might originate from both environmental and genetic risk factors. The environmental chronic mild stress (CMS) model mimics some environmental factors contributing to human depression and induces anhedonia and helplessness. Mice heterozygous for the synaptic vesicle protein (SVP) vesicular glutamate transporter 1 (VGLUT1) have been proposed as a genetic model of deficient glutamate function linked to depressive-like behaviour. Here, we aimed to identify, in these two experimental models, gene expression changes in the frontal cortex, common to stress and impaired glutamate function. Both VGLUT1(+/-) and CMS mice showed helpless and anhedonic-like behavior. Microarray studies in VGLUT1(+/-) mice revealed regulation of genes involved in apoptosis, neurogenesis, synaptic transmission, protein metabolic process or learning and memory. In addition, RT-PCR studies confirmed gene expression changes in several glutamate, GABA, dopamine and serotonin neurotransmitter receptors. On the other hand, CMS affected the regulation of 147 transcripts, some of them involved in response to stress and oxidoreductase activity. Interestingly, 52 genes were similarly regulated in both models. Specifically, a dowregulation in genes that promote cell proliferation (Anapc7), cell growth (CsnK1g1), cell survival (Hdac3), and inhibition of apoptosis (Dido1) was observed. Genes linked to cytoskeleton (Hspg2, Invs), psychiatric disorders (Grin1, MapK12) or an antioxidant enzyme (Gpx2) were also downregulated. Moreover, genes that inhibit the MAPK pathways (Dusp14), stimulate oxidative metabolism (Eif4a2) and enhance glutamate transmission (Rab8b) were upregulated. We suggest that these genes could form part of the altered "molecular context" underlying depressive-like behaviour in animal models. The clinical relevance of these findings is discussed.
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Affiliation(s)
- R M Tordera
- Department of Pharmacology, University of Navarra, 31080 Pamplona, Spain.
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Perez-Gracia JL, Prior C, Guillén-Grima F, Segura V, Gonzalez A, Panizo A, Melero I, Grande-Pulido E, Gurpide A, Gil-Bazo I, Calvo A. Identification of TNF-alpha and MMP-9 as potential baseline predictive serum markers of sunitinib activity in patients with renal cell carcinoma using a human cytokine array. Br J Cancer 2009; 101:1876-83. [PMID: 19904265 PMCID: PMC2788252 DOI: 10.1038/sj.bjc.6605409] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background: Several drugs are available to treat metastatic renal-cell carcinoma (MRCC), and predictive markers to identify the most adequate treatment for each patient are needed. Our objective was to identify potential predictive markers of sunitinib activity in MRCC. Methods: We collected sequential serum samples from 31 patients treated with sunitinib. Sera of six patients with extreme phenotypes of either marked responses or clear progressions were analysed with a Human Cytokine Array which evaluates 174 cytokines before and after treatment. Variations in cytokine signal intensity were compared between both groups and the most relevant cytokines were assessed by ELISA in all the patients. Results: Twenty-seven of the 174 cytokines varied significantly between both groups. Five of them (TNF-α, MMP-9, ICAM-1, BDNF and SDF-1) were assessed by ELISA in 21 evaluable patients. TNF-α and MMP-9 baseline levels were significantly increased in non-responders and significantly associated with reduced overall survival and time-to-progression, respectively. The area under the ROC curves for TNF-α and MMP-9 as predictive markers of sunitinib activity were 0.83 and 0.77. Conclusion: Baseline levels of TNF-α and MMP-9 warrant further study as predictive markers of sunitinib activity in MRCC. Selection of patients with extreme phenotypes seems a valid method to identify potential predictive factors of response.
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Affiliation(s)
- J L Perez-Gracia
- Department of Medical Oncology, University Clinic of Navarra, University of Navarra, Pamplona, Spain.
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Perez-Gracia J, Prior C, Guillen-Grima F, Gonzalez A, Panizo A, Segura V, Grande-Pulido E, Gurpide A, Melero I, Calvo A. Identification of baseline predictive markers of sunitinib activity using a human cytokine antibody array in patients with metastatic renal cell carcinoma (MRCC). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.5113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5113 Background: Several drugs are available for treatment of MRCC and predictive markers to select the most appropriate therapy for each patient are needed to improve efficacy and to avoid unnecessary toxicities and costs. Methods: Serum samples were collected prospectively in 31 patients treated with sunitinib at baseline and at the time of response evaluation by RECIST criteria. Serums of 6 patients with extreme phenotypes of marked responses (3) or clear progressions (3) were analyzed with a Human Cytokine Antibody Array (Series 2000, RayBiotech, Norcross, GA. USA) which evaluates 174 cytokines related to angiogenesis and tumor proliferation pathways and has been validated in clinical studies. Cytokine intensity levels were compared between both groups at baseline and after response evaluation and fold-change differences were calculated. Following array data normalization, the most relevant cytokines based on statistical significance and on biological plausibility, were assessed with ELISA in the whole group of patients and the results were correlated with clinical benefit (response or disease stabilization) or progression. Results: 27 of the 174 cytokines varied significantly between patients presenting response or progression. Six of them (TNF-α, MMP-9, ICAM-1, BDNF, SDF-1α and VEGF) were assessed with ELISA in 22 evaluable patients. TNF-α and MMP-9 baseline levels were significantly increased in non-responders and they were significantly associated with progression-free and overall survival respectively. The area under the ROC curves of TNF-α and MMP-9 as predictive factors of sunitinib clinical benefit were respectively 0.8287 and 0.7685, indicating good accuracy. Conclusions: Baseline serum levels of TNF-α and MMP-9 warrant further study as predictive markers of sunitinib activity in patients with MRCC. Selection of patients with extreme phenotypes seems a valid method to identify potential predictive factors of response. [Table: see text] [Table: see text]
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Affiliation(s)
- J. Perez-Gracia
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - C. Prior
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - F. Guillen-Grima
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - A. Gonzalez
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - A. Panizo
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - V. Segura
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - E. Grande-Pulido
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - A. Gurpide
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - I. Melero
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
| | - A. Calvo
- University Hospital, University of Navarra, Pamplona, Spain; CIMA, University of Navarra, Pamplona, Spain; Pfizer Inc, Madrid, Spain
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Regnard J, Segura V, Merveille N, Durel C, Costes E. QTL ANALYSIS FOR LEAF GAS EXCHANGE IN AN APPLE PROGENY GROWN UNDER ATMOSPHERIC CONSTRAINTS. ACTA ACUST UNITED AC 2009. [DOI: 10.17660/actahortic.2009.814.60] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gonzalez-Moreno O, Lecanda J, Segura V, Serrano D, Catena R, Green J, Calvo A. Increased expression of VEGF in a prostate intraepithelial neoplasia (PIN)-like cell line leads to Epithelial-to-Mesenchymal transition (EMT). EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71364-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Abstract
The present study aimed at investigating the genetic determinisms of architectural traits in a 1-year-old apple (Malus x domestica Borkh.). F1 progeny. A precise phenotyping including both tree topology and geometry was performed on 123 offspring. For a wide range of developmental traits, broad-sense heritability was estimated and quantitative trait loci (QTLs) were investigated. Several loci controlling geometry were identified (i) for integrated traits, such as tree surface and volume; (ii) for traits related to the form of long sylleptic axillary shoots (LSAS), such as bending and basis angle; and (iii) for traits of finer components, such as internode length of the trunk and LSAS. Considering topology, 4 QTLs were mapped for the total number of sylleptic branching in the tree, suggesting a strong and complex genetic control that was analysed through colocalisations between QTLs mapped for the different shoot types (long, medium, short). Two QTLs were also mapped for a phenological trait (date of bud break). When several QTLs were detected for a trait, a linear model was built to test epistatic effects and estimate the whole percentage of variability explained. The discussion focuses on particular colocalisations and on the relevance of traits to further tree development.
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Affiliation(s)
- V Segura
- UMR Développement et Amélioration des Plantes - Equipe Architecture et Fonctionnement des Espèces Fruitières, INRA - SupAgro Montpellier, 2 place Pierre Viala, 34060 Montpellier CEDEX 1, France
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Segura V, Huang C, Martín E, Martínez E, Sansivirini F, Astacio N. Crit Care 2004; 8:P318. [DOI: 10.1186/cc2785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Alvarenga M, Segura V, Marroquin H, Guevara M. Crit Care 2003; 7:P213. [DOI: 10.1186/cc2102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Palacios M, Morales E, Segura V, Delgado F. Crit Care 2003; 7:P085. [DOI: 10.1186/cc1974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Del Cid W, Lopez M, Segura V. Fibrinogen, ejection fraction and Killip classification as mortality prediction factors in acute coronary syndrome. Crit Care 2002. [PMCID: PMC3333571 DOI: 10.1186/cc1612] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Affiliation(s)
- W Del Cid
- Unidad de Medicina Crítica, Hospital Médico Quirúrugico (ISSS), Alameda Juan Pablo II, San Salvador, El Salvador
| | - M Lopez
- Unidad de Medicina Crítica, Hospital Médico Quirúrugico (ISSS), Alameda Juan Pablo II, San Salvador, El Salvador
| | - V Segura
- Unidad de Medicina Crítica, Hospital Médico Quirúrugico (ISSS), Alameda Juan Pablo II, San Salvador, El Salvador
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Segura V, Chicas D, Bonilla Y. Shock, acute renal failure and MODS as mortality indicator in acute pancreatitis. Crit Care 2001. [PMCID: PMC3333398 DOI: 10.1186/cc1278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Two parameters have been defined for quantifying jiggle: normalized consecutive amplitude differences (CAD) and the cross-correlational coefficient of consecutive discharges (CCC). In real recordings, artifacts from several sources may increase the variability of these parameters as they were originally defined. Two methodological modifications designed to overcome such a limitation are proposed: estimation of baseline fluctuation from segments of the recording free from nearby concurrent motor unit potentials (MUPs), and waveform alignment of consecutive discharges by correlation maximization (CM). The results obtained by the original and modified methods were compared for MUPs from normal subjects and patients with amyotrophic lateral sclerosis and chronic neurogenic diseases. With the modified method, CAD and CCC showed fewer extreme values and less scatter. The number of successfully aligned MUPs with the CM method was 18.8% higher (n = 394; Chi-square = 54.6; P < 0.001), including irregular and unstable MUPs. The proposed modifications improve our capability to quantify the jiggle of real signals and reduce the necessity of manual interventions although low-interference recordings and operator supervision are still required.
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Affiliation(s)
- C Campos
- Department of Clinical Neurophysiology, Hospital San Millán, C/Autonomía de La Rioja 3, 26004 Logroño, Spain
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