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Salgado M, Molina R, Vázquez EB, Martínez E, Cillán E, Fullana T, Villa J, Lobo M, Masvidal M, Porta R, Campos B, Garicano F, Pampols M, Fernández I, Font C, Martínez P, Gutiérrez D, Horvath E, Costa A, Malheiro M, Arias D, for the CARTAGO study group. PO-54: Preliminary evaluation of venous thromboembolic risk in patients with colorectal cancer from the CARTAGO study. Thromb Res 2022. [DOI: 10.1016/s0049-3848(22)00244-4] [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: 10/18/2022]
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Martín AM, Lecumberri R, Souto J, Aparicio J, Obispo B, Sanchez A, Aguayo C, Gutiérrez D, Viñuela-Benéitez M, Menke S, Casero H, Arumí D, Hernández-Presa MÁ. PO-57: Venous thromboembolism recurrence during anticoagulant treatment in gastrointestinal cancer patients. Thromb Res 2022. [DOI: 10.1016/s0049-3848(22)00247-x] [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: 11/30/2022]
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Carriles AA, Mills A, Muñoz‐Alonso M, Gutiérrez D, Domínguez JM, Hermoso JA, Gago F. Front Cover: Structural Cues for Understanding eEF1A2 Moonlighting (ChemBioChem 2/2021). Chembiochem 2021. [DOI: 10.1002/cbic.202000859] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alejandra A. Carriles
- Department of Crystallography and Structural Biology Institute of Physical-Chemistry “Rocasolano” CSIC 28006 Madrid Spain
- Biocrystallography Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS Scientific Institute San Raffaele 20132 Milan Italy
| | - Alberto Mills
- Department of Biomedical Sciences and “Unidad Asociada IQM-CSIC” School of Medicine and Health Sciences University of Alcalá 28805 Alcalá de Henares Madrid Spain
| | - María‐José Muñoz‐Alonso
- Department of Cell Biology and Pharmacogenomics PharmaMar S.A.U. 28770 Colmenar Viejo, Madrid Spain
| | - Dolores Gutiérrez
- Proteomics Unit Faculty of Pharmacy Complutense University 28040 Madrid Spain
| | - Juan M. Domínguez
- Department of Cell Biology and Pharmacogenomics PharmaMar S.A.U. 28770 Colmenar Viejo, Madrid Spain
| | - Juan A. Hermoso
- Department of Crystallography and Structural Biology Institute of Physical-Chemistry “Rocasolano” CSIC 28006 Madrid Spain
| | - Federico Gago
- Department of Biomedical Sciences and “Unidad Asociada IQM-CSIC” School of Medicine and Health Sciences University of Alcalá 28805 Alcalá de Henares Madrid Spain
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Carriles AA, Mills A, Muñoz-Alonso MJ, Gutiérrez D, Domínguez JM, Hermoso JA, Gago F. Structural Cues for Understanding eEF1A2 Moonlighting. Chembiochem 2020; 22:374-391. [PMID: 32875694 DOI: 10.1002/cbic.202000516] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/01/2020] [Indexed: 12/16/2022]
Abstract
Spontaneous mutations in the EEF1A2 gene cause epilepsy and severe neurological disabilities in children. The crystal structure of eEF1A2 protein purified from rabbit skeletal muscle reveals a post-translationally modified dimer that provides information about the sites of interaction with numerous binding partners, including itself, and maps these mutations onto the dimer and tetramer interfaces. The spatial locations of the side chain carboxylates of Glu301 and Glu374, to which phosphatidylethanolamine is uniquely attached via an amide bond, define the anchoring points of eEF1A2 to cellular membranes and interorganellar membrane contact sites. Additional bioinformatic and molecular modeling results provide novel structural insight into the demonstrated binding of eEF1A2 to SH3 domains, the common MAPK docking groove, filamentous actin, and phosphatidylinositol-4 kinase IIIβ. In this new light, the role of eEF1A2 as an ancient, multifaceted, and articulated G protein at the crossroads of autophagy, oncogenesis and viral replication appears very distant from the "canonical" one of delivering aminoacyl-tRNAs to the ribosome that has dominated the scene and much of the thinking for many decades.
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Affiliation(s)
- Alejandra A Carriles
- Department of Crystallography and Structural Biology, Institute of Physical-Chemistry "Rocasolano" CSIC, 28006, Madrid, Spain.,Biocrystallography Unit, Division of Immunology, Transplantation, and Infectious Diseases, IRCCS Scientific Institute San Raffaele, 20132, Milan, Italy
| | - Alberto Mills
- Department of Biomedical Sciences and "Unidad Asociada IQM-CSIC", School of Medicine and Health Sciences, University of Alcalá, 28805, Alcalá de Henares, Madrid, Spain
| | - María-José Muñoz-Alonso
- Department of Cell Biology and Pharmacogenomics, PharmaMar S.A.U., 28770, Colmenar Viejo, Madrid, Spain
| | - Dolores Gutiérrez
- Proteomics Unit, Faculty of Pharmacy, Complutense University, 28040, Madrid, Spain
| | - Juan M Domínguez
- Department of Cell Biology and Pharmacogenomics, PharmaMar S.A.U., 28770, Colmenar Viejo, Madrid, Spain
| | - Juan A Hermoso
- Department of Crystallography and Structural Biology, Institute of Physical-Chemistry "Rocasolano" CSIC, 28006, Madrid, Spain
| | - Federico Gago
- Department of Biomedical Sciences and "Unidad Asociada IQM-CSIC", School of Medicine and Health Sciences, University of Alcalá, 28805, Alcalá de Henares, Madrid, Spain
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5
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Gerstmans H, Grimon D, Gutiérrez D, Lood C, Rodríguez A, van Noort V, Lammertyn J, Lavigne R, Briers Y. A VersaTile-driven platform for rapid hit-to-lead development of engineered lysins. Sci Adv 2020; 6:eaaz1136. [PMID: 32537492 PMCID: PMC7269649 DOI: 10.1126/sciadv.aaz1136] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
Health care authorities are calling for new antibacterial therapies to cope with the global emergence of antibiotic-resistant bacteria. Bacteriophage-encoded lysins are a unique class of antibacterials with promising (pre)clinical progress. Custom engineering of lysins allows for the creation of variants against potentially any bacterial pathogen. We here present a high-throughput hit-to-lead development platform for engineered lysins. The platform is driven by VersaTile, a new DNA assembly method for the rapid construction of combinatorial libraries of engineered lysins. We constructed approximately 10,000 lysin variants. Using an iterative screening procedure, we identified a lead variant with high antibacterial activity against Acinetobacter baumannii in human serum and an ex vivo pig burn wound model. This generic platform could offer new opportunities to populate the preclinical pipeline with engineered lysins for diverse (therapeutic) applications.
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Affiliation(s)
- H. Gerstmans
- Department of Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, Belgium
- Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, 3001 Leuven, Belgium
- Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - D. Grimon
- Department of Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, Belgium
| | - D. Gutiérrez
- Department of Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, Belgium
- Dairy Research Institute of Asturias, Spanish National Research Council (IPLA-CSIC), Paseo Río Linares, s/n, 33300 Villaviciosa, Asturias, Spain
| | - C. Lood
- Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, 3001 Leuven, Belgium
- Department of Microbial and Molecular Systems, KU Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium
| | - A. Rodríguez
- Dairy Research Institute of Asturias, Spanish National Research Council (IPLA-CSIC), Paseo Río Linares, s/n, 33300 Villaviciosa, Asturias, Spain
| | - V. van Noort
- Department of Microbial and Molecular Systems, KU Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium
- Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 Leiden, Netherlands
| | - J. Lammertyn
- Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - R. Lavigne
- Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, 3001 Leuven, Belgium
| | - Y. Briers
- Department of Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, Belgium
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Pérez A, Machado W, Gutiérrez D, Borges AC, Patchineelam SR, Sanders CJ. Carbon accumulation and storage capacity in mangrove sediments three decades after deforestation within a eutrophic bay. Mar Pollut Bull 2018; 126:275-280. [PMID: 29421098 DOI: 10.1016/j.marpolbul.2017.11.018] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 11/08/2017] [Accepted: 11/13/2017] [Indexed: 06/08/2023]
Abstract
A dated sediment core from an eutrophic mangrove area presented non-significant differences in carbon accumulation rates before (55.7±10.2gm-2yr-1) and after three decades of deforestation (59.7±7.2gm-2yr-1). Although eutrophication effects appear to compensate the loss of mangrove organic matter input, the results in this work show a threefold lower carbon accumulation than the global averages estimated for mangrove sediments. The effects of increasing eutrophication and enhanced sediment dry bulk density observed after deforestation (~30% higher) did not result in higher carbon stocks. Moreover, the lower TOC:OP (<400) and C:N (~20) molar ratios, as well as increased nutrient accumulation, reflect the dominance of phytoplankton-derived organic matter after deforestation, resulting in less-efficient sedimentary carbon sinks. These results indicate that the organic material deposited from eutrophication may not compensate mangrove deforestation losses on carbon accumulation in mangrove ecosystems.
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Affiliation(s)
- A Pérez
- Programa de Pós-Graduação em Geoquímica, Universidade Federal Fluminense, Departamento de Geoquímica, Rua Outeiro São João Baptista s/n, Niteroi, RJ, Brazil.
| | - W Machado
- Programa de Pós-Graduação em Geoquímica, Universidade Federal Fluminense, Departamento de Geoquímica, Rua Outeiro São João Baptista s/n, Niteroi, RJ, Brazil
| | - D Gutiérrez
- Dirección General de Investigaciones en Oceanografía y Cambio Climático, Instituto del Mar del Perú, Av. Gamarra y General Valle, s/n, Chucuito, Callao, Peru
| | - A C Borges
- Programa de Pós-Graduação em Geoquímica, Universidade Federal Fluminense, Departamento de Geoquímica, Rua Outeiro São João Baptista s/n, Niteroi, RJ, Brazil
| | - S R Patchineelam
- Programa de Pós-Graduação em Geoquímica, Universidade Federal Fluminense, Departamento de Geoquímica, Rua Outeiro São João Baptista s/n, Niteroi, RJ, Brazil
| | - C J Sanders
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
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7
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Salgado-Ruiz TB, Rodríguez A, Gutiérrez D, Martínez B, García P, Espinoza-Ortega A, Martínez-Campos AR, Lagunas-Bernabé S, Vicente F, Arriaga-Jordán CM. Molecular characterization and antimicrobial susceptibility of Staphylococcus aureus from small-scale dairy systems in the highlands of Central México. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s13594-014-0195-0] [Citation(s) in RCA: 7] [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: 12/24/2022]
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Radaelli G, Petti D, Plekhanov E, Fina I, Torelli P, Salles BR, Cantoni M, Rinaldi C, Gutiérrez D, Panaccione G, Varela M, Picozzi S, Fontcuberta J, Bertacco R. Electric control of magnetism at the Fe/BaTiO₃ interface. Nat Commun 2014; 5:3404. [PMID: 24584546 PMCID: PMC3942656 DOI: 10.1038/ncomms4404] [Citation(s) in RCA: 160] [Impact Index Per Article: 16.0] [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] [Received: 08/09/2013] [Accepted: 02/07/2014] [Indexed: 11/30/2022] Open
Abstract
Interfacial magnetoelectric coupling is a viable path to achieve electrical writing of magnetic information in spintronic devices. For the prototypical Fe/BaTiO3 system, only tiny changes of the interfacial Fe magnetic moment upon reversal of the BaTiO3 dielectric polarization have been predicted so far. Here, by using X-ray magnetic circular dichroism in combination with high resolution electron microscopy and first principles calculations, we report on an undisclosed physical mechanism for interfacial magnetoelectric coupling in the Fe/BaTiO3 system. At this interface, an ultrathin oxidized iron layer exists, whose magnetization can be electrically and reversibly switched on-off at room-temperature by reversing the BaTiO3 polarization. The suppression / recovery of interfacial ferromagnetism results from the asymmetric effect that ionic displacements in BaTiO3 produces on the exchange coupling constants in the interfacial oxidized Fe layer. The observed giant magnetoelectric response holds potential for optimizing interfacial magnetoelectric coupling in view of efficient, low-power spintronic devices.
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Affiliation(s)
- G Radaelli
- LNESS-Dipartimento di Fisica-Politecnico di Milano, Via Anzani 42, 22100 Como, Italy
| | - D Petti
- LNESS-Dipartimento di Fisica-Politecnico di Milano, Via Anzani 42, 22100 Como, Italy
| | - E Plekhanov
- Consiglio Nazionale delle Ricerche, CNR-SPIN, 67100 L'Aquila, Italy
| | - I Fina
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - P Torelli
- Consiglio Nazionale delle Ricerche, CNR - IOM, Laboratorio TASC, I-34149 Trieste, Italy
| | - B R Salles
- 1] Consiglio Nazionale delle Ricerche, CNR - IOM, Laboratorio TASC, I-34149 Trieste, Italy [2] Instituto de Fisica, Universidade Federal do Rio de Janeiro, 21941-972 Rio de Janeiro, Brazil
| | - M Cantoni
- LNESS-Dipartimento di Fisica-Politecnico di Milano, Via Anzani 42, 22100 Como, Italy
| | - C Rinaldi
- LNESS-Dipartimento di Fisica-Politecnico di Milano, Via Anzani 42, 22100 Como, Italy
| | - D Gutiérrez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - G Panaccione
- Consiglio Nazionale delle Ricerche, CNR - IOM, Laboratorio TASC, I-34149 Trieste, Italy
| | - M Varela
- 1] Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA [2] Departamento Fisica Aplicada III, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - S Picozzi
- Consiglio Nazionale delle Ricerche, CNR-SPIN, 67100 L'Aquila, Italy
| | - J Fontcuberta
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - R Bertacco
- LNESS-Dipartimento di Fisica-Politecnico di Milano, Via Anzani 42, 22100 Como, Italy
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Castillo G, Rossano-García A, Gutiérrez D, Diliz-Pérez HS, Córdova J. [Acute cellular rejection in a liver transplantation patient due to changing the brand of a generic immunosuppressant]. Rev Gastroenterol Mex 2013; 78:198-200. [PMID: 23866966 DOI: 10.1016/j.rgmx.2013.01.007] [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] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/15/2013] [Accepted: 01/28/2013] [Indexed: 10/26/2022]
Affiliation(s)
- G Castillo
- Servicio de Gastroenterología, Hospital General de México «Dr. Eduardo Liceaga» O.D, México DF, México
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Gutiérrez D, Salazar-Varas R. EEG signal classification using time-varying autoregressive models and common spatial patterns. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2011:6585-8. [PMID: 22255848 DOI: 10.1109/iembs.2011.6091624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The performance of EEG signal classification methods based on Common Spatial Patterns (CSP) depends on the operational frequency bands of the events to be discriminated. This problem has been recently addressed by using a sub-band decomposition of the EEG signals through filter banks. Even though this approach has proven effective, the performance still depends on the number of filters that are stacked and the criteria used to determine their cutoff frequencies. Therefore, we propose an alternative approach based on an eigenstructure decomposition of the signals' time-varying autoregressive (TVAR) models. The eigen-based decomposition of the TVAR representation allows for subject-specific estimation of the principal time-varying frequencies, then such principal eigencomponents can be used in the traditional CSP-based classification. A series of simulations show that the proposed classification scheme can achieve high classification rates under realistic conditions, such as low signal-to-noise ratio (SNR), a reduced number of training experiments, and a reduced number of sensors used in the measurements.
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Affiliation(s)
- D Gutiérrez
- Center of Research and Advanced Studies, Cinvestav, Monterrey, 66600 Apodaca, Mexico.
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11
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Jiménez-Martí E, Zuzuarregui A, Gomar-Alba M, Gutiérrez D, Gil C, del Olmo M. Molecular response of Saccharomyces cerevisiae wine and laboratory strains to high sugar stress conditions. Int J Food Microbiol 2011; 145:211-20. [PMID: 21247650 DOI: 10.1016/j.ijfoodmicro.2010.12.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 12/20/2010] [Accepted: 12/21/2010] [Indexed: 11/30/2022]
Abstract
One of the stress conditions that can affect Saccharomyces cerevisiae cells during their growth is osmotic stress. Under particular environments (for instance, during the production of alcoholic beverages) yeasts have to cope with osmotic stress caused by high sugar concentrations. Although the molecular changes and pathways involved in the response to saline or sorbitol stress are widely understood, less is known about how cells respond to high sugar concentrations. In this work we present a comprehensive study of the response to this form of stress which indicates important transcriptomic changes, especially in terms of the genes involved in both stress response and respiration, and the implication of the HOG pathway. We also describe several genes of an unknown function which are more highly expressed under 20% (w/v) glucose than under 2% (w/v) glucose. In this work we focus on the YHR087w (RTC3) gene and its encoded protein. Proteomic analysis of the mutant deletion strain reveals lower levels of several yeast Hsp proteins, which establishes a link between this protein and the response to several forms of stress. The relevance of YHR087W for the response to high sugar and other stress conditions and the relationship of the encoded protein with several Hsp proteins suggest applications of this gene in biotechnological processes in which response to stress is important.
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Affiliation(s)
- E Jiménez-Martí
- Departament de Bioquímica i Biologia Molecular, Facultat de Ciències Biològiques, Universitat de València, Burjassot Valencia, Spain
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12
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Pérez P, Rabnecz G, Laufer Z, Gutiérrez D, Tuba Z, Martínez-Carrasco R. Restoration of photosystem II photochemistry and carbon assimilation and related changes in chlorophyll and protein contents during the rehydration of desiccated Xerophyta scabrida leaves. J Exp Bot 2011; 62:895-905. [PMID: 20956360 PMCID: PMC3022389 DOI: 10.1093/jxb/erq317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 03/09/2010] [Revised: 09/17/2010] [Accepted: 09/21/2010] [Indexed: 05/07/2023]
Abstract
Recovery of photosynthesis in rehydrating desiccated leaves of the poikilochlorophyllous desiccation-tolerant plant Xerophyta scabrida was investigated. Detached leaves were remoistened under 12 h light/dark cycles for 96 h. Water, chlorophyll (Chl), and protein contents, Chl fluorescence, photosynthesis-CO(2) concentration response, and the amount and activity of Rubisco were measured at intervals during the rehydration period. Leaf relative water contents reached 87% in 12 h and full turgor in 96 h. Chl synthesis was slower before than after 24 h, and Chla:Chlb ratios changed from 0.13 to 2.6 in 48 h. The maximum quantum efficiency recovered faster during rehydration than the photosystem II operating efficiency and the efficiency factor, which is known to depend mainly on the use of the electron transport chain products. From 24 h to 96 h of rehydration, net carbon fixation was Rubisco limited, rather than electron transport limited. Total Rubisco activity increased during rehydration more than the Rubisco protein content. Desiccated leaves contained, in a close to functional state, more than half the amount of the Rubisco protein present in rehydrated leaves. The results suggest that in X. scabrida leaves Rubisco adopts a special, protective conformation and recovers its activity during rehydration through modifications in redox status.
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Affiliation(s)
- P Pérez
- Institute of Natural Resources and Agrobiology of Salamanca, CSIC, Apartado 257, 37071 Salamanca, Spain.
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13
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Escalona-Vargas DI, Gutiérrez D, Lopez-Arevalo I. Cramér-Rao bounds on the performance of simulated annealing and genetic algorithms in EEG source localization. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2011:7115-7118. [PMID: 22255978 DOI: 10.1109/iembs.2011.6091798] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this paper, we evaluate the performance of simulated annealing (SA) and the genetic algorithm (GA) when used for electroencephalographic (EEG) source localization. The performance is evaluated on the variance of the estimated localizations as a function of the optimization's initialization parameters and the signal-to-noise ratio (SNR). We use the concentrated likelihood function (CLF) as objective function and the Cramér-Rao bound (CRB) as a reference on the performance. The CRB sets the lower limit on the variance of our estimated values. Then, our simulations on realistic EEG data show that both SA and GA are highly sensitive to noise, but adjustments on their parameters for a fixed SNR value do not improve performance significantly. Our results also confirm that SA is more sensitive to noise and its performance may be affected by correlated sources.
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Affiliation(s)
- D I Escalona-Vargas
- Center of Research and Advanced Studies, Cinvestav at Tamaulipas, 87130 Cd Victoria, Mexico.
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14
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Gutiérrez D, Foncubierta A, Espinosa R, Astorga S, Leon A, Fernández S. Immediate type 1 hypersensitivity to apomorphine: a case report. J Investig Allergol Clin Immunol 2011; 21:325-326. [PMID: 21721386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- D Gutiérrez
- UGC Neumología-Alergia, Hospital Universitario Puerta del Mar, Cádiz, Spain.
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15
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Curto M, Valledor L, Navarrete C, Gutiérrez D, Sychrova H, Ramos J, Jorrin J. 2-DE based proteomic analysis of Saccharomyces cerevisiae wild and K+ transport-affected mutant (trk1,2) strains at the growth exponential and stationary phases. J Proteomics 2010; 73:2316-35. [PMID: 20638488 DOI: 10.1016/j.jprot.2010.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 06/22/2010] [Accepted: 07/06/2010] [Indexed: 12/27/2022]
Abstract
By using a 2-DE based workflow, the proteome of wild and potassium transport mutant trk1,2 under optimal growth potassium concentration (50mM) has been analyzed. At the exponential and stationary phases, both strains showed similar growth, morphology potassium content, and Vmax of rubidium transport, the only difference found being the Km values for this potassium analogue transport, higher for the mutant (20mM) than for the wild (3-6mM) cells. Proteins were buffer-extracted, precipitated, solubilized, quantified, and subjected to 2-DE analysis in the 5-8 pH range. More differences in protein content (37-64mgg(-1) cell dry weight) and number of resolved spots (178-307) were found between growth phases than between strains. In all, 164 spots showed no differences between samples and a total of 105 were considered to be differential after ANOVA test. 171 proteins, corresponding to 71 unique gene products have been identified, this set being dominated by cytosolic species and glycolitic enzymes. The ranking of the more abundant spots revealed no differences between samples and indicated fermentative metabolism, and active cell wall biosynthesis, redox homeostasis, biosynthesis of amino acids, coenzymes, nucleotides, and RNA, and protein turnover, apart from cell division and growth. PCA analysis allowed the separation of growth phases (PC1 and 2) and strains at the stationary phase (PC3 and 4), but not at the exponential one. These results are also supported by clustering analysis. As a general tendency, a number of spots newly appeared at the stationary phase in wild type, and to a lesser extent, in the mutant. These up-accumulated spots corresponded to glycolitic enzymes, indicating a more active glucose catabolism, accompanied by an accumulation of methylglyoxal detoxification, and redox-homeostasis enzymes. Also, more extensive proteolysis was observed at the stationary phase with this resulting in an accumulation of low Mr protein species.
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Affiliation(s)
- Miguel Curto
- Agricultural and Plant Biochemistry and Proteomics Research Group, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
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Jaimovich R, Gutiérrez D, Lavados H, Aqueveque C, Quevedo L, Alay R, Massardo T. Influence of extracardiac activity and perfusion abnormalities on myocardial perfusion gated SPECT parameters: interobserver analysis. ACTA ACUST UNITED AC 2010; 29:293-8. [PMID: 20570016 DOI: 10.1016/j.remn.2010.04.004] [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] [Received: 01/12/2010] [Revised: 04/01/2010] [Accepted: 04/09/2010] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Extracardiac activity (ECA) may affect interpretation of gated SPECT myocardial perfusion studies (MPSs). To solve this problem, available softwares include myocardial edge delimitation. PURPOSE To evaluate the influence of ECA in automatic myocardial edge detection under normal conditions and with abnormal perfusion and also evaluate the reproducibility of semi-automatic processing. METHODS A total of 100 MPSs, 50 with ECA, were analyzed. Each subgroup included 25 cases with perfusion abnormalities. The cases were processed automatically and by 4 independent operators with different levels of experience. Commercial QGS and QPS softwares were used with tools to mask and relocate the left ventricle area. Functional parameters (final diastolic and systolic volumes and ejection fraction) and perfusion parameters such as the reversibility perfusion score and rest perfusion defect extension were analyzed. The data were compared with Pearson's correlation and Student's test. RESULTS Interobserver correlation significantly worsened with the presence of ECA and was moderately affected by perfusion abnormalities. More experienced observers presented better correlation. Reproducibility was greater for the functional perfusion parameters, independently of the observer's experience. CONCLUSIONS ECA significantly affects automatic edging delimitation, affecting the MPS values. Interobserver reproducibility with manual processing was more altered regarding functional parameters than in the perfusion scores. Perfusion abnormalities did not interfere with software reproducibility, and when present, better correlation was found. If ECA is not present, manual intervention should be avoided.
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Affiliation(s)
- R Jaimovich
- Nuclear Medicine Section, Medicine Department, University of Chile, Clinical Hospital, Santos Dumont 999-1E, Independencia, Santiago, Chile.
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Blanco D, Junco S, Expósito Y, Gutiérrez D. Study of Various Treatments to Isolate Low Levels of Cider Proteins to Be Analyzed by Capillary Sieving Electrophoresis. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-120034089] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Domingo Blanco
- a Department of Physical and Analytical Chemistry , University of Oviedo , C/Julián Claveria no. 8, CP 33006 , Oviedo , Asturias , Spain
| | - Sara Junco
- a Department of Physical and Analytical Chemistry , University of Oviedo , C/Julián Claveria no. 8, CP 33006 , Oviedo , Asturias , Spain
| | - Yoana Expósito
- a Department of Physical and Analytical Chemistry , University of Oviedo , C/Julián Claveria no. 8, CP 33006 , Oviedo , Asturias , Spain
| | - Dolores Gutiérrez
- a Department of Physical and Analytical Chemistry , University of Oviedo , C/Julián Claveria no. 8, CP 33006 , Oviedo , Asturias , Spain
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18
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Martínez-Gomariz M, Hernáez ML, Gutiérrez D, Ximénez-Embún P, Préstamo G. Proteomic analysis by two-dimensional differential gel electrophoresis (2D DIGE) of a high-pressure effect in Bacillus cereus. J Agric Food Chem 2009; 57:3543-3549. [PMID: 19338277 DOI: 10.1021/jf803272a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
High hydrostatic pressure (HHP) is a new method used to reduce or eliminate microorganisms that are present in food. Proteins are known to be the most important target of high pressure in living organisms. The main goal of this investigation was focused on the changes that occur on the proteins of Bacillus cereus under HHP stress conditions. The two-dimensional differential gel electrophoresis (2D DIGE) technique allows for a simultaneous resolution of thousands of proteins based on fluorescent prelabeling of the samples with spectrally resolvable fluorescent CyDyes. The results of proteomics profiling show an average of 1300 spots being detected. The analysis revealed 75 spot proteins whose abundance is modified after the application of high pressure, of which 66 were decreased after the HHP treatment. Among them, flagellin was the protein that changed the most. The differential expression of some proteins after HHP treatment at 700 MPa may suggest a reduction of virulence and protective response against oxidative stress in flagellated Bacillus .
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Affiliation(s)
- M Martínez-Gomariz
- Proteomic Facility, Universidad Complutense de Madrid-Parque Científico de Madrid (UCM-PCM), Madrid 28040, Spain
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19
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Palao JM, Gutiérrez D, Frideres JE. Height, weight, Body Mass Index, and age in beach volleyball players in relation to level and position. J Sports Med Phys Fitness 2008; 48:466-471. [PMID: 18997649] [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: 05/27/2023]
Abstract
AIM This study tried to find out the height, weight, Body Mass Index (BMI), and age of peak performance beach volleyball players with regard to their level of play and their role. METHODS The men's and women's pairs that classified in the World Tour and in the Olympic Games during seasons 2000-2006 were analyzed (625 males and 617 females). A descriptive, correlational, and longitudinal design was used. The variables studied were: height, weight, age, BMI, level (World Tour ranking), and player role (blocker, defense specialist, or no specialization). The data were obtained from the webpage of the International Federation of Volleyball. RESULTS The average characteristics for males were 1.93 m, 88-89 kg, a BMI of 23.8-24.1, and an age range of 29-31 years, and for females, they were 1.77-1.79 m, 66-68 kg, a BMI of 19.2-21.1, and an age range of 27-29 years. CONCLUSION Beach volleyball players are older and have smaller anthropometric characteristics when compared to indoor volleyball players. Male players present similar values for age and height across rankings. For both genders, with regard to weight and BMI, the higher the level, the larger the value. For women, the players at a higher level presented higher values of age, height, weight, and BMI. With regard to role, the blocking specialists were taller than the defense specialists. The pairs that share the blocking and defense responsibilities have intermediate values.
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Affiliation(s)
- J M Palao
- Department of Physical Activity and Sport Sciences, Faculty of Health, Physical Activity and Sport, Catholic University of St. Anthony. Guadalupe, Murcia, Spain.
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20
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Abad ML, Verdura T, Vela A, Iglesias MJ, Gutiérrez D, Veiga M, Aguilera A, Regueiro BJ. Construction and Characterization of a Minimized Version of the HIV-1 pNL4-3 Plasmid and Its Application for Pseudotyping HIV-1 Vectors. Mol Biotechnol 2004; 28:87-95. [PMID: 15477647 DOI: 10.1385/mb:28:2:087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/11/2022]
Abstract
The pUC-based pNL4-3 plasmid is the most widely used vector for in vitro manipulations of the HIV-1 proviral sequences. We have developed a minimal plasmid (pCHUS) based on pNL4-3, which may be useful to facilitate the design of HIV-based constructions. The strategy that has allowed us to construct pCHUS includes the following steps: (1) pNL4-3 digestion by using restriction sites contained within the long terminal repeats (LTRs), (2) recircularization of the fragment containing the pUC18 sequence, (3) amplification of the LTR region restored in the previous step, (4) double digestion of the products obtained in steps 2 and 3, (5) ligation of the fragment containing ColE1+Amp(R) with the LTR fragment, (6) linearization of the intermediate plasmid obtained, and (7) insertion of the fragment containing the proviral genome into the linearized vector. The pCHUS plasmid includes essential information for its replication and antibiotic selection in bacteria, but it lacks all the unnecessary sequences. Our results suggest that pCHUS may be more advantageous than pNL4-3 for in vitro manipulation of the HIV-1 proviral genome. In addition, we describe a potential application of this new vector for pseudotyping HIV-1 particles, using a single plasmid transfection, as a more helpful alternative to the traditionally used cotransfection method.
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Affiliation(s)
- María Luisa Abad
- Division of Microbiology, Hospital de Conxo, Complejo Hospitalario Universitario de Santiago (CHUS), Santiago de Compostela, Spain.
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Cowley MJR, Thomas CD, Wilson RJ, León-Cortés JL, Gutiérrez D, Bulman CR. Density-distribution relationships in British butterflies. II. An assessment of mechanisms. J Anim Ecol 2002. [DOI: 10.1046/j.1365-2656.2001.00509.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Cowley MJR, Thomas CD, Roy DB, Wilson RJ, León-Cortés JL, Gutiérrez D, Bulman CR, Quinn RM, Moss D, Gaston KJ. Density-distribution relationships in British butterflies. I. The effect of mobility and spatial scale. J Anim Ecol 2002. [DOI: 10.1046/j.1365-2656.2001.00508.x] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gil D, Gutiérrez D, Alarcón B. Intracellular redistribution of nucleolin upon interaction with the CD3epsilon chain of the T cell receptor complex. J Biol Chem 2001; 276:11174-9. [PMID: 11115514 DOI: 10.1074/jbc.m010114200] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/06/2022] Open
Abstract
T cell activation through the antigen receptor (TCR) involves the cytoplasmic tails of the CD3 subunits CD3gamma, CD3delta, CD3epsilon, and CD3zeta. Whereas the biological significance of the cytoplasmic tails of these molecules is suggested, in part, by their evolutionarily conserved sequences, their interactions with signal transduction molecules are not completely understood. We used affinity chromatography columns of glutathione S-transferase fused to the CD3epsilon cytoplasmic tail to isolate proteins that specifically interact with this subunit. In this way, we identified the shuttling protein nucleolin as a specific CD3epsilon-interacting molecule. Using competition studies and affinity chromatography on peptide columns, we were able to identify a central proline-rich sequence as the nucleolin-interacting sequence in CD3epsilon. Transfection in COS cells of wild type CD3epsilon, but not of nonbinding mutants of CD3epsilon, resulted in redistribution of nucleolin from the nucleus and nucleoli to the cytoplasm. This property was transferred to a CD8 protein chimera by appending the cytoplasmic tail of CD3epsilon. We also found that nucleolin associated with the TCR complex. This association was increased upon TCR engagement, suggesting that the CD3epsilon/nucleolin interaction may have a role in T cell activation.
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Affiliation(s)
- D Gil
- Centro de Biologia Molecular Severo Ochoa, Consejo Superior de Investigaciones Cientificas, Universidad Autónoma de Madrid, Cantoblanco, Madrid 28049, Spain
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24
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Colombo MV, Gutiérrez D, Palacios JM, Imperial J, Ruiz-Argüeso T. A novel autoregulation mechanism of fnrN expression in Rhizobium leguminosarum bv viciae. Mol Microbiol 2000; 36:477-86. [PMID: 10792733 DOI: 10.1046/j.1365-2958.2000.01867.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [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: 11/20/2022]
Abstract
The fnrN gene from Rhizobium leguminosarum UPM791 controls microaerobic expression of both nitrogen fixation and hydrogenase activities in symbiotic cells. Two copies of fnrN are present in this strain, one chromosomal (fnrN1) and the other located in the symbiotic plasmid (fnrN2). Their expression was studied by cloning the regulatory regions in lacZ promoter-probe vectors. The fnrN genes were found to be autoregulated: they are expressed only at basal levels under aerobic conditions; they are highly expressed under microaerobic conditions; and they are expressed at basal levels in the double mutant DG2 (fnrN1 fnrN2) under any condition. The promoters of both genes contain two FnrN-binding sequences (anaeroboxes), centred at positions -12.5 (proximal anaerobox) and -44.5 (distal anaerobox). Expression analysis and gel retardation experiments with fnrN1-derivative promoter mutants altered in key bases of the anaerobox sequences demonstrated that binding of FnrN1 to the distal anaerobox is necessary for microaerobic activation of transcription, and that binding of FnrN1 to the proximal anaerobox results in transcriptional repression. The apparent affinity of FnrN1 for the proximal anaerobox was fivefold lower than for the distal anaerobox, resulting in repression of transcription of fnrN1 only at high-FnrN1 concentrations. This positive and negative autoregulation mechanism ensures an equilibrated expression of fnrN in response to microaerobic conditions.
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Affiliation(s)
- M V Colombo
- Laboratorio de Microbiología, E.T.S. Ingenieros Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria, s/n, 28040 Madrid, Spain
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Aguila A, Nazer J, Cifuentes L, Mella P, de la Barra P, Gutiérrez D. [Prevalence of congenital malformations at birth and associated factors in Easter Island, Chile (1988-1998)]. Rev Med Chil 2000; 128:162-6. [PMID: 10962884] [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: 02/17/2023]
Abstract
BACKGROUND Consanguinity plays an important role in the genetic etiology of congenital malformations. In Easter Island the degree of consanguinity could be higher than in continental Chile. Therefore the study of the prevalence of congenital malformations in this island seems worthwhile. AIM To study the prevalence of congenital malformations at birth in Easter Island. MATERIAL AND METHODS A review of personal and family features of all children born alive between 1988 and 1998 in the Rapa Nui Hospital of Easter Island. RESULTS During the study period, 772 newborns were reviewed and 22 were found to have congenital malformations. Among the latter, birth weight fluctuated between 3001 and 4000 g and the male/female ratio was 0.54. No differences in maternal age between children with and without malformations was observed. Heart and circulatory malformations, hemangiomas and Down syndrome were the predominant malformations. CONCLUSIONS The prevalence of congenital malformations at birth in Easter Island is similar to that of continental Chile. No neural tube defects were detected in this sample.
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Affiliation(s)
- A Aguila
- Departamento de Obstetricia y Ginecología, Universidad de Chile.
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26
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Affiliation(s)
- D Gutiérrez
- Baby Friendly Hospital Initiative, UNICEF, New York, USA
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27
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Gutiérrez D, Hernando Y, Palacios JM, Imperial J, Ruiz-Argüeso T. FnrN controls symbiotic nitrogen fixation and hydrogenase activities in Rhizobium leguminosarum biovar viciae UPM791. J Bacteriol 1997; 179:5264-70. [PMID: 9286975 PMCID: PMC179391 DOI: 10.1128/jb.179.17.5264-5270.1997] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [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: 02/05/2023] Open
Abstract
Rhizobium leguminosarum bv. viciae UPM791 contains a second copy of the fnrN gene, which encodes a redox-sensitive transcriptional activator functionally homologous to Escherichia coli Fnr. This second copy (fnrN2) is located in the symbiotic plasmid, while fnrN1 is in the chromosome. Isolation and sequencing of the fnrN2 gene revealed that the deduced amino acid sequence of FnrN2 is 87.5% identical to the sequence of FnrN1, including a conserved cysteine-rich motif characteristic of Fnr-like proteins. Individual R. leguminosarum fnrN1 and fnrN2 mutants exhibited a Fix+ phenotype and near wild-type levels of nitrogenase and hydrogenase activities in pea (Pisum sativum L.) nodules. In contrast, an fnrN1 fnrN2 double mutant formed ineffective nodules lacking both nitrogenase and hydrogenase activities. Unlike the wild-type strain and single fnrN1 or fnrN2 mutants, the fnrN1 fnrN2 double mutant was unable to induce micro-oxic or bacteroid activation of the hypBFCDEX operon, which encodes proteins essential for hydrogenase synthesis. In the search for symbiotic genes that could be controlled by FnrN, a fixNOQP operon, putatively encoding a micro-oxically induced, bacteroid-specific cbb3-type terminal cytochrome oxidase, was isolated from strain UPM791 and partially sequenced. The fixNOQP operon was present in a single copy located in the symbiotic plasmid, and an anaerobox was identified in the fixN promoter region. Consistent with this, a fixNOQP'-lacZ fusion was shown to be highly induced in micro-oxic cells of the wild-type strain. A high level of micro-oxic induction was also observed in single fnrN1 and fnrN2 mutants, but no detectable induction was observed in the fnrN1 fnrN2 double mutant. The lack of expression of fixNOQP in the fnrN1 fnrN2 double mutant is likely to cause the observed Fix- phenotype. These data demonstrate that, contrary to the situation in other rhizobia, FnrN controls both hydrogenase and nitrogenase activities of R. leguminosarum bv. viciae UPM791 in the nodule and suggest that this strain lacks a functional fixK gene.
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Affiliation(s)
- D Gutiérrez
- Laboratorio de Microbiología, Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Spain
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Gutiérrez D, Guardia P, Delgado J, Gutiérrez J, Monteseirin FJ, de la Calle A, Lobatón P, Senra A, Conde J. Increased serum IgE in acute type A, B and delta hepatitis. J Investig Allergol Clin Immunol 1997; 7:119-21. [PMID: 9161938] [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: 02/04/2023] Open
Abstract
Serum IgE levels have been documented in patients of acute type B hepatitis. There are very few studies on serum IgE in acute type A hepatitis and, to our knowledge, there are no data on serum IgE in acute delta hepatitis patients. The purpose of this study was to measure total IgE levels in 38 patients with acute A, B and delta hepatitis and in 181 controls in order to determine the possible existence of changes in this parameter in the course of these infections. Our results showed a relevant increase in IgE levels in the three groups (hepatitis A, B and delta) with respect to the control group. Moreover, the hepatitis B group showed increased total serum IgE levels with respect to the hepatitis delta group.
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Affiliation(s)
- D Gutiérrez
- Servicio Regional de Inmunología y Alergia, Hospital Virgen Macarena, Spain
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29
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Monteseirín J, Prados M, Camacho MJ, Llamas E, de la Calle A, González J, Gutiérrez D, Conde J. Eosinophils and allergy. Allergol Immunopathol (Madr) 1996; 24:201-10. [PMID: 8985476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- J Monteseirín
- Servicio Regional de Inmunología y Alergia, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Spain
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Monteseirín J, Camacho MJ, Gutiérrez D, Llamas E, Guardia P, Bonilla I, Sánchez-Monteseirín H, Conde J. Neutrophils and allergy. Allergol Immunopathol (Madr) 1996; 24:193-200. [PMID: 8985475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- J Monteseirín
- Servicio Regional de Inmunología y Alergia, Hospital Universitario Virgen Macarena, Facultad
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31
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Sáenz Lope E, Gutiérrez D. [On the 70th anniversary of Professor Lluis Barraquer i Bordas]. Neurologia 1994; 9:257. [PMID: 8086191] [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: 01/28/2023] Open
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Cazzaniga M, Faella H, Laneri D, Sciegata A, Gamboa R, Kurlat I, Mazzuchelli T, Gutiérrez D, Mesz B. [Percutaneous balloon valvotomy in neonatal obstructive cardiopathy. I: critical pulmonary valvular stenosis]. An Esp Pediatr 1993; 38:295-9. [PMID: 8480939] [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: 01/31/2023]
Abstract
Percutaneous pulmonary balloon valvotomy using one balloon or more in sequential approach was attempted in 9 no selected neonates with critical pulmonary valve stenosis between March 1985 and October 1990 (mean age 10 + 8.6 days). The procedure was successful in seven of them (78%) in whom with a 1.22 + 0.2 balloon/annulus ratio the right ventricular systolic pressure decreased from 96 to 45 mmHg (p < 0.001), the transvalvular gradient from 65 to 23 mmHg (p < 0.001); and the systemic oxygen saturation increased from 69 to 86% (p < 0.001). In one patient the valve was not crossed. Two patients underwent surgery because unsuccessful balloon valvotomy result in the immediate and mid term period: hypoplastic right ventricle in one, and inferior vena cava thrombosis that prevent a second dilation in the other respectively. The mid term follow up showed a 62% (5/8) of successful result. Although the complex methodology and complications are not uncommon, the balloon pulmonary valvotomy is a safely and effective therapy for neonates with critical pulmonary stenosis.
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Affiliation(s)
- M Cazzaniga
- Hospital de Pediatría JP Garrahan, Buenos Aires, Argentina
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