444 results on '"Madre, M"'
Search Results
402. Effect of Pb substitution on the thermoelectrical properties of textured Bi2Ca2Co1.7Oy ceramics prepared by a polymer solution method
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Shahed Rasekh, Madre, M. A., Diez, J. C., Guilmeau, E., Marinel, S., and Sotelo, A.
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Thermoelectrical properties of cobaltite ceramics can be tuned up by choosing the adequate synthetic method, cation substitution and subsequent grain orientation. This can be performed preparing the ceramics by a polymer solution method, using Pb partially substituting Bi, and texturing by directionally growing from the melt. In this work, Bi2-xPbxCa2Co1.7Oy (x = 0.0, 0.2, 0.4 and 0.6) ceramics, prepared by a polymer solution method, have been directionally grown, with the Laser Floating Zone (LFZ) technique, at 30 mm/h. In all the cases, the microstructure shows alternated layers with small CoO inclusions. It has been found a very important decrease on the resistivity and, at the same time, on the thermopower. However, the power factor values are improved with Pb addition, reaching power factor values, for samples with 0.4 Pb substitution, as high as two times the values obtained for undoped ones., The authors wish to thank the Gobierno de Aragón (Research Groups T12 and T74, and project PI154/08), the Spanish Ministry for Education and Science (Spanish-French Integrated Action HF2006-0171), and the Spanish Ministry of Science and Innovation (Project MAT2008-00429) for financial support.
403. Ag addition effect on laser textured Bi-2212 samples abstract
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Mora, M., Sotelo, A., Amaveda, H., Madre, M. A., Diez, J. C., Angurel, L. A., and German Francisco de la Fuente
404. Study of directionally solidified eutectic Al2O3-ZrO2 (3%Y2O3) doped with TiO2
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Diez, J. C., Madre, M. A., Sotelo, A., and Peña, J. I.
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Directional solidification ,Eutéctico ,Al2O3-ZrO2 ,Solidificación direccional ,TiO2 ,TiO2 doping ,Eutectic - Abstract
[EN] An study of directionally grown samples of the eutectic composition in the Al2O3-ZrO2 (3 mol% Y2O3) system, with small TiO2 additions (1 wt%), is presented. The microstructural changes induced by this addition are analysed using SEM (EDX) techniques. The mechanical changes, when TiO2 is added, are studied by measuring the flexural strength by three point bending. Also, the toughness is determined by Vickers indentation method. When slow growth rates (10 mm/h) are used, interpenetratred and homogeneous microstructure is obtained, independently of the TiO2 doping. When growth rates are higher (300 and 1000 mm/h) the structure changes and the phases are organized in form of colonies or cells, which have smaller size when TiO2 is present. This size reduction is accompanied with an increase of the toughness., [ES] Este trabajo presenta un estudio de muestras crecidas direccionalmente del sistema Al2O3-ZrO2 (3 mol% Y2O3) en su composición eutéctica con pequeñas adiciones de óxido de titanio (1% de TiO2 en peso). Se analizan los cambios microestructurales inducidos por esta adición mediante SEM (EDX) y se estudian los cambios en su comportamiento mecánico medido por flexión en tres puntos, así como la tenacidad de fractura mediante indentación Vickers. Con velocidades lentas de solidificación (10 mm/h) se obtiene en ambos casos una microestructura homogénea e interpenetrada, mientras que a velocidades mayores, 300 y 1000 mm/h, se forma una estructura en las que las fases se organizan en forma de colonias o células, siendo éstas de menor tamaño en las muestras dopadas. Esta disminución en el tamaño viene acompañada de un aumento de la tenacidad de fractura medida por indentación., We gratefully acknowledge support from the Spanish Ministry of Education and Science (CICYT MAT2003-06085-C03-01) and from the Aragón Government (Grupos Consolidados E03 and T12).
405. Effect of synthetic methods on the thermoelectrical properties of textured Bi2Ca2Co1.7Ox ceramics
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Shahed Rasekh, Madre, M. A., Sotelo, A., Guilmeau, E., Marianel, S., and Diez, J. C.
- Abstract
Thermoelectric performances on cobaltite ceramics can be changed by grain orientation. This can be performed by directional solidification on samples prepared from different synthetic methods. Three synthetic methods, conventional solid state reaction, sol-gel and polymer solution were used for preparation of Bi2Ca2Co1.7Ox powders. The powders have been directionally grown, at a rate of 30 mm/h, by the laser floating zone method. In all the cases, the microstructure shows alternated layers, of Bi2Ca2Co2Ox and a Bi-Ca-O solid solution, with small CoO inclusions. It has been found an improvement on the power factor at 50 ºC for the solution methods with respect to the conventional solid sate sintered samples., The authors wish to thank the Gobierno de Aragón (Research Groups T12 and T74, and project PI154/08), the Spanish Ministry for Education and Science (Spanish-French Integrated Action HF2006-0171), and the Spanish Ministry of Science and Innovation (Project MAT2008-00429) for financial support.
406. Suicidal patterns of in-patients,Patrones suicidas en pacientes ingresados
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clemente garcia-rizo, Madre, M., Escartí, Ma J., Tejedor, M. C., Castillón, J. J., and Álvarez, E.
407. Surface-based brain morphometry and diffusion tensor imaging in schizoaffective disorder
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Landin-Romero R, Erick Jorge Canales-Rodríguez, Kumfor F, Moreno-Alcázar A, Madre M, Maristany T, Pomarol-Clotet E, and Bl, Amann
408. ChemInform Abstract: Purine Nucleoside Analogues. Part 4. 7-Alkyl Derivatives of 9-(2-Hydroxyethoxymethyl)guanine.
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MADRE, M. A., primary, ZHUK, R. A., additional, and LIDAK, M. YU., additional
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- 1989
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409. ChemInform Abstract: Purine Nucleoside Analogues. Part 3. Alkoxyalkylation of Hypoxanthine by the Silyl Method.
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MADRE, M. A., primary, LIEPIN'SH, E. E., additional, ZHUK, R. A., additional, SAKHARTOVA, O. V., additional, and LIDAK, M. YU., additional
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- 1986
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410. ChemInform Abstract: Purine Nucleoside Analogues. Part 2. 9-(1-Alkoxyethyl)-6-Substituted Purines.
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MADRE, M. A., primary, ZHUK, R. A., additional, and LIDAK, M. YU., additional
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- 1986
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411. ChemInform Abstract: Analogs of Purine Nucleosides. Part 1. Investigation of the Methods of Synthesis of 9-(2-Oxyethoxymethyl)guanine.
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MADRE, M. A., primary, ZHUK, R. A., additional, and LIDAK, M. YU., additional
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- 1986
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412. Purine nucleoside analogs. 6. Chlorination of acycloguanosine and some of its derivatives with thionyl chloride
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Madre, M. A., Zhuk, R. A., and Lidak, M. Yu.
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The reaction of 9- and 7-(2-hydroyethoxymethyl)guanines and some of their derivatives with thionyl chloride inhexamethylphosphorustriamide was investigated. 9- and 7-(2-Chloroethoxymethyl)- and 8-chloro-, 8-bromo-, and 8-mercapto-9-(2-chloroethoxymethyl)guanines were synthesized. The structure of the compounds was confirmed by the UV and ESR spectra.
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- 1992
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413. Health Care Professionals as Relatives in Organ Donation Interviews: Analysis of the Important Role of Health Care Professionals as Family Members.
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Rodriguez, Alonso Mateos, Gonzalez, J.I. Torres, Madre, M. Aparicio, Diez Collar, M.C., Casado Sanjuan, E., Varillas Delgado, D., and Del Rio Gallegos, F.J.
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MEDICAL personnel , *ORGAN donation , *INFERENTIAL statistics , *PROCUREMENT of organs, tissues, etc. , *INTERVIEWING - Abstract
The organ and tissue donation interview is a vital step in obtaining the donation. Therefore, it is important to obtain as much information as possible regarding the relatives of the potential donor prior to this interview and know if there is a health care professional among the relatives who may act as an interlocutor. The objective of this study is to assess the influence that relatives who are health care professionals may have if present at the interview for the organ and tissue donation request. This is a descriptive study of all the organ donations from 1996 to 2019. Variables of the interview record form were completed by the Regional Transplant Coordination Office. Quantitative variables are expressed as mean (standard deviation) or median (interquartile range), and qualitative variables are expressed in percentage. The χ2 test was used for inferential statistics. Health care professionals were present as interlocutors in 8.4% of the total interviews conducted (9279). Organ donation was accepted in 86% of these interviews, while the relative who was a health care professional gave a 93.8% (729) positive response to the donation. Having a health care professional as an interlocutor favors the acceptance of the donation (odds ratio 9.325, 95% confidence interval: 5.054-17.205; P <.001). Health care professionals have a very positive attitude toward donation. This attitude positively impacts other relatives' acceptance of the donation. • In almost 1 out of every 10 interviews on organ and tissue donation, there is a family member present. • The presence of health care professional relatives in organ donation interviews seems to be an important factor for establishing an affirmative response. [ABSTRACT FROM AUTHOR]
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- 2021
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414. Effect of Rubidium Substitution on the Physical and Superconducting Properties of Textured High-Tc BSCCO Samples.
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Özçelik, B., Ergin, I., Madre, M. A., and Sotelo, A.
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RUBIDIUM , *ALKALINE earth metals , *CRYSTAL symmetry , *CRITICAL temperature , *TEMPERATURE measurements , *SUPERCONDUCTORS - Abstract
In this research, the effects of rubidium (Rb) substitution on the microstructural, physical, and superconducting properties of Bi2Sr2Ca1-xRbxCu2O8 + y with x = 0.0, 0.025, 0.05, 0.075, 0.10, and 0.125 superconductor have, in detail, been studied. For this purpose, samples were prepared through the classical solid state reaction route, followed by directional grown using the laser floating zone technique and annealing. XRD measurements showed that all samples are composed of Bi-2212 phase as the dominant one, together with less amount of secondary phases. The crystal symmetries of samples were determined as pseudo tetragonal. SEM-EDX confirmed that Bi-2212 phase is the major one, with minor amounts of Bi2 + x(Sr,Ca)2O6 + d, (Sr,Ca)CuO2, CuO2, and CaO secondary phases. In magnetization versus temperature measurements, very sharp diamagnetic transition is observed. The critical onset temperatures, TC, for all samples are obtained around 90 K. From M-H measurement, it has been found that all samples have very large loop areas. By using the data from M-H measurements in the Bean model, the intragranular critical field, JC, has been determined. It has been found that the x = 0.05Rb sample shows the highest superconducting properties and the largest JC values (2.2 105 A/cm2 at 10 K). Moreover, the maximum pinning force, FPmax, at this temperature has also been obtained in x = 0.05Rb sample (8.5 108 Oe A/cm2). [ABSTRACT FROM AUTHOR]
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- 2020
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415. Effect of Cesium Substitution on the Superconducting Properties of Bi-2212 Samples Prepared Via Solid-State Reaction and Laser Floating Zone Technique.
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Ergin, I., Özçelik, B., Madre, M. A., and Sotelo, A.
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SOLID-state lasers , *CESIUM , *STRONTIUM , *ALKALINE earth metals , *MAGNETIZATION measurement , *CRITICAL currents , *CRITICAL temperature - Abstract
In this work, the effect of cesium substitution on the structural and superconducting properties of Bi2Sr2Ca1-xCsxCu2O+y (where x = 0.0, 0.025, 0.050, 0.075, 0.10, 0.125, and 0.15) samples prepared by the solid-state reaction route and by directional growth using the laser floating zone (LFZ) technique has been studied. X-ray diffraction has shown that both kinds of samples present the 2212 phase as the major one, with pseudo tetragonal structure, accompanied by minor amounts of (Sr,Ca)CuO2 and Bi2(Sr,Ca)4O6 + d secondary phases. SEM-EDX results indicate that Bi-2212 phase is the major one, with small amounts of secondary phases. Cs substitution diminishes the size and content of secondary phases. Magnetization measurements reflect different behavior for sintered and LFZ grown samples. Although the diamagnetic transition is very wide for the former samples, it is very sharp for the last ones. The critical onset temperatures, TC, are around 80 and 90 K, for sintered and LFZ grown samples, respectively. Moreover, M–H measurements indicate that LFZ grown samples exhibit larger areas than the sintered ones. The intragranular critical current, JC, calculated from the M–H loops and Bean's formula, is maximum for x = 0.025Cs sintered and x = 0.05Cs LFZ grown samples. The maximum pinning forces, FPmax, determined in these samples are higher than those obtained in undoped ones, reaching 9 × 107 Oe*A/cm2 and 10 × 108 Oe*A/cm2, at 10 K, for sintered and LFZ grown samples, respectively. [ABSTRACT FROM AUTHOR]
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- 2019
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416. ChemInform Abstract: Analogues of Purine Nucleosides. Part 6. Chlorination of Acycloguanosine and Some of Its Derivatives with Thionyl Chloride.
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MADRE, M. A., ZHUK, R. A., and LIDAKS, M. Y.
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- 1993
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417. Enhancement of electrical conductivity of Ca 2.93 Sr 0.07 Co 4 O 9 thick films via hot uniaxial pressing
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M. A. Torres, M. Mora, Sylvain Marinel, Andres Sotelo, M. A. Madre, H. Amaveda, University of Zaragoza - Universidad de Zaragoza [Zaragoza], École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), MAT2017‐82183‐C3‐1‐R, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), Instituto de Ciencia de Materiales de Aragón [Saragoza, España] (ICMA-CSIC), Agencia Estatal de Investigación (España), Universidad de Zaragoza, Ministerio de Ciencia, Innovación y Universidades (España), Gobierno de Aragón, Ministerio de Economía y Competitividad (España), European Commission, Mora Alfonso, Mario, Torres, M. A., Madre, M. A., Mora Alfonso, Mario [0000-0003-4747-7327], Torres, M. A. [0000-0003-3995-5763], and Madre, M. A. [0000-0002-0794-3998]
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Materials science ,microstructure ,02 engineering and technology ,ceramics ,01 natural sciences ,Electrical resistivity and conductivity ,0103 physical sciences ,[CHIM.CRIS]Chemical Sciences/Cristallography ,Materials Chemistry ,[CHIM]Chemical Sciences ,Ceramic ,ComputingMilieux_MISCELLANEOUS ,010302 applied physics ,Marketing ,Pressing ,[CHIM.MATE]Chemical Sciences/Material chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Thermoelectric materials ,Microstructure ,Engineering physics ,[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry ,thick films ,visual_art ,electrical properties ,oxides ,Ceramics and Composites ,visual_art.visual_art_medium ,0210 nano-technology ,thermoelectrics - Abstract
Sr‐doped Ca3Co4O9 thermoelectric thick films have been prepared by dip‐coating technique, followed by sintering and hot uniaxial pressing. XRD patterns are very similar in both types of samples, with only differences in the relative intensity of peaks, pointing out to a better grain orientation in hot‐pressed films. Moreover, SEM observation showed a drastic decrease in the hot‐pressed films thickness. Electrical resistivity is decreased in textured materials due to the higher grain orientation and density, confirmed through Hall measurements. On the other hand, Seebeck coefficient is maintained practically unchanged. Power factor at 800°C is much higher in textured materials (0.44 mW/K2m) than determined in sintered films (0.30 mW/K2m), and in the order of the best typically reported in the literature (0.43 mW/K2m)., The authors thank the Gobierno de Aragón‐FEDER (Research Group T 54‐17R), and the Spanish MINECO‐FEDER (Project MAT2017‐82183‐C3‐1‐R) for financial support. The authors acknowledge the use of Servicio General de Apoyo a la Investigación‐SAI, Universidad de Zaragoza.
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- 2019
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418. Effect of Carbon Nanotube Addition on the Superconducting Properties of BSCCO Samples Textured via Laser Floating Zone Technique.
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Özçelik, B., Ergin, I., Depçi, T., Yavuz, H. I., Madre, M. A., and Sotelo, A.
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MULTIWALLED carbon nanotubes , *CARBON nanotubes , *LASERS , *HYSTERESIS loop , *CRITICAL currents , *DENSITY currents , *CARBON - Abstract
In this research, the effect of carbon nanotube (CNT) addition on the structural and superconducting properties of Bi2Sr2CaCu2Oy + x wt% CNT materials with x = 0, 0.5, 1, and 3 prepared by solid state method, followed by directional grown using the laser floating zone (LFZ) technique has been investigated. XRD measurements showed that all samples are composed of almost single Bi-2212 phase. SEM images proved that Bi-2212 phase is the major one, with minor amounts of (Sr,Ca)3BiOx, and Bi-2201 secondary phases. According to the magnetic results, carbon nanotubes decrease Tc values and significantly reduce the magnetic hysteresis loops area and the magnetic critical current density. [ABSTRACT FROM AUTHOR]
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- 2019
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419. Improvement of thermoelectric properties of Ca0.9Gd0.1MnO3 by powder engineering through K2CO3 additions.
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Ferreira, N. M., Ferro, M. C., Sarabando, A. R., Ribeiro, A., Davarpanah, A., Amaral, V., Madre, M. A., Kovalevsky, A. V., Torres, M. A., Costa, F. M., and Sotelo, A.
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THERMOELECTRICITY , *N-type semiconductors , *PEROVSKITE , *POTASSIUM carbonate , *ADDITION reactions - Abstract
Oxide materials based on calcium manganite show clear prospects as thermoelectrics, provided by their stability at high temperatures and inherent flexibility in tuning the relevant electrical and thermal transport properties. Donor-doped CaMnO3 is an n-type semiconductor with a perovskite structure and relatively high thermoelectric performance. In this work, the precursor powders have been modified through potassium carbonate additions to produce Ca0.9Gd0.1MnO3 pellets without the usual delamination problems occurring during the compaction process. In order to demonstrate the relevant effects, several samples with different amounts of potassium carbonate (0-15 wt%) have been prepared. The results showed that potassium additions significantly facilitate the compaction procedure, while also improving the thermoelectric performances. The results also highlight the importance of porosity control for improving ZT, by decreasing the thermal conductivity without reduction of the electrical performance. The highest ZT values were observed for the samples processed at 15 wt% of potassium carbonate addition, exhibiting an improvement at least 30% at 800 °C when compared to the pure samples. [ABSTRACT FROM AUTHOR]
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- 2019
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420. Effect of precursors on the microstructure and electrical properties of Bi2Ba2Co2Ox.
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Sotelo, A., Torres, M. A., Rasekh, Sh, Madre, M. A., and Diez, J. C.
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CHEMICAL precursors , *METAL microstructure , *ELECTRIC properties of metals , *BISMUTH compounds , *COPRECIPITATION (Chemistry) - Abstract
Bi2Ba2Co2Ox thermoelectric materials have been prepared through three different synthesis methods. The corresponding precursors were obtained from a coprecipitation method using oxalic acid, attrition milling, and classical solid state method (used as reference). Microstructural studies of precursors have shown that the ones produced by coprecipitation and attrition milling led to smaller grain sizes than the ones obtained through ball milling. Infrared spectroscopy has demonstrated that a thermal treatment at 450 °C totally decomposes the metallic oxalates, producing a mixture of Bi and Co oxides, and Ba carbonate, the same average composition of the other precursors. After sintering procedure, it has been determined that the small grain size precursors produce high-density samples, reflected in a decrease of electrical resistivity without significant modification of the Seebeck coefficient. As a consequence, power factor values are more than two times higher than the measured in samples prepared by the classical solid state method. Moreover, the highest power factor values are in the order of the best reported in textured materials, demonstrating the critical role of precursors in the final properties of these materials. [ABSTRACT FROM AUTHOR]
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- 2017
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421. EMDR therapy vs. supportive therapy as adjunctive treatment in trauma-exposed bipolar patients: A randomised controlled trial.
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Hogg B, Radua J, Gardoki-Souto I, Fontana-McNally M, Lupo W, Reinares M, Jiménez E, Madre M, Blanco-Presas L, Cortizo R, Massó-Rodriguez A, Castaño J, Argila I, Castro-Rodriguez JI, Comes M, Macias C, Sánchez-González R, Mur-Mila E, Novo P, Rosa AR, Vieta E, Padberg F, Pérez-Solà V, Valiente-Gómez A, Moreno-Alcázar A, and Amann BL
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- Humans, Female, Male, Adult, Middle Aged, Psychological Trauma therapy, Psychotherapy methods, Eye Movement Desensitization Reprocessing methods, Bipolar Disorder therapy, Bipolar Disorder psychology
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Introduction: Patients with bipolar disorder (BD) are frequently exposed to traumatic events which worsen disease course, but this study is the first multicentre randomised controlled trial to test the efficacy of a trauma-focused adjunctive psychotherapy in reducing BD affective relapse rates., Materials and Methods: This multicentre randomised controlled trial included 77 patients with BD and current trauma-related symptoms. Participants were randomised to either 20 sessions of trauma-focused Eye Movement Desensitization and Reprocessing (EMDR) therapy for BD, or 20 sessions of supportive therapy (ST). The primary outcome was relapse rates over 24-months, and secondary outcomes were improvements in affective and trauma symptoms, general functioning, and cognitive impairment, assessed at baseline, post-treatment, and at 12- and 24-month follow-up. The trial was registered prior to starting enrolment in clinical trials (NCT02634372) and carried out in accordance with CONSORT guidelines., Results: There was no significant difference between treatment conditions in terms of relapse rates either with or without hospitalisation. EMDR was significantly superior to ST at the 12-month follow up in terms of reducing depressive symptoms (p=0.0006, d=0.969), manic symptoms (p=0.027, d=0.513), and improving functioning (p=0.038, d=0.486). There was no significant difference in dropout between treatment arms., Conclusions: Although the primary efficacy criterion was not met in the current study, trauma-focused EMDR was superior to ST in reducing of affective symptoms and improvement of functioning, with benefits maintained at six months following the end of treatment. Both EMDR and ST reduced trauma symptoms as compared to baseline, possibly due to a shared benefit of psychotherapy. Importantly, focusing on traumatic events did not increase relapses or dropouts, suggesting psychological trauma can safely be addressed in a BD population using this protocol., (Copyright © 2023 Sociedad Española de Psiquiatría y Salud Mental (SEPSM). Published by Elsevier España S.L.U. All rights reserved.)
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- 2024
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422. NRN1 epistasis with BDNF and CACNA1C: mediation effects on symptom severity through neuroanatomical changes in schizophrenia.
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Almodóvar-Payá C, Guardiola-Ripoll M, Giralt-López M, Oscoz-Irurozqui M, Canales-Rodríguez EJ, Madre M, Soler-Vidal J, Ramiro N, Callado LF, Arias B, Gallego C, Pomarol-Clotet E, and Fatjó-Vilas M
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- Humans, Female, Male, Adult, Middle Aged, Brain pathology, Polymorphism, Single Nucleotide, Neuropeptides genetics, Neuropeptides metabolism, Magnetic Resonance Imaging, Young Adult, GPI-Linked Proteins, Brain-Derived Neurotrophic Factor genetics, Schizophrenia genetics, Schizophrenia pathology, Epistasis, Genetic, Calcium Channels, L-Type genetics
- Abstract
The expression of Neuritin-1 (NRN1), a neurotrophic factor crucial for neurodevelopment and synaptic plasticity, is enhanced by the Brain Derived Neurotrophic Factor (BDNF). Although the receptor of NRN1 remains unclear, it is suggested that NRN1's activation of the insulin receptor (IR) pathway promotes the transcription of the calcium voltage-gated channel subunit alpha1 C (CACNA1C). These three genes have been independently associated with schizophrenia (SZ) risk, symptomatology, and brain differences. However, research on how they synergistically modulate these phenotypes is scarce. We aimed to study whether the genetic epistasis between these genes affects the risk and clinical presentation of the disorder via its effect on brain structure. First, we tested the epistatic effect of NRN1 and BDNF or CACNA1C on (i) the risk for SZ, (ii) clinical symptoms severity and functionality (onset, PANSS, CGI and GAF), and (iii) brain cortical structure (thickness, surface area and volume measures estimated using FreeSurfer) in a sample of 86 SZ patients and 89 healthy subjects. Second, we explored whether those brain clusters influenced by epistatic effects mediate the clinical profiles. Although we did not find a direct epistatic impact on the risk, our data unveiled significant effects on the disorder's clinical presentation. Specifically, the NRN1-rs10484320 x BDNF-rs6265 interplay influenced PANSS general psychopathology, and the NRN1-rs4960155 x CACNA1C-rs1006737 interaction affected GAF scores. Moreover, several interactions between NRN1 SNPs and BDNF-rs6265 significantly influenced the surface area and cortical volume of the frontal, parietal, and temporal brain regions within patients. The NRN1-rs10484320 x BDNF-rs6265 epistasis in the left lateral orbitofrontal cortex fully mediated the effect on PANSS general psychopathology. Our study not only adds clinical significance to the well-described molecular relationship between NRN1 and BDNF but also underscores the utility of deconstructing SZ into biologically validated brain-imaging markers to explore their mediation role in the path from genetics to complex clinical manifestation., (© 2024. The Author(s).)
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- 2024
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423. Predictors of cocaine use disorder treatment outcomes: a systematic review.
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Palazón-Llecha A, Caparrós B, Trujols J, Duran-Sindreu S, Batlle F, Madre M, and Mallorquí-Bagué N
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- Humans, Treatment Outcome, Recurrence, Craving, Self Efficacy, Patient Dropouts statistics & numerical data, Randomized Controlled Trials as Topic, Age Factors, Substance Withdrawal Syndrome, Cocaine-Related Disorders therapy, Cocaine-Related Disorders psychology
- Abstract
Background: Psychosocial approaches are the first-line treatments for cocaine dependence, although they still present high dropout and relapse rates. Thus, there is a pressing need to understand which variables influence treatment outcomes to improve current treatments and prevent dropout and relapse rates. The aim of this study is to explore predictors of treatment retention and abstinence in CUD., Methods: This systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We searched three databases-PubMed, PsychINFO and Web of Science-for randomized clinical trials (RCTs) published in English and Spanish from database inception through April 1, 2023. We selected all studies that met the inclusion criteria (adults aged ≥ 18, outpatient treatment, CUD as main addiction, and no severe mental illness) to obtain data for the narrative synthesis addressing cocaine abstinence and treatment retention as main outcome variables. After data extraction was completed, risk of bias was assessed using the Cochrane risk-of-bias tool for randomized trials (RoB-2)., Results: A total of 566 studies were screened, and, of those, 32 RCTs were included in the synthesis. Younger age, more years of cocaine use, and craving levels were significant predictors of relapse and treatment dropout. Fewer withdrawal symptoms, greater baseline abstinence, greater treatment engagement, and more self-efficacy were all predictors of longer duration of abstinence. The role of impulsivity as a predictor of CUD is unclear due to conflicting data, although the evidence generally suggests that higher impulsivity scores can predict more severe addiction and withdrawal symptoms, and earlier discontinuation of treatment., Conclusion: Current evidence indicates which variables have a direct influence on treatment outcomes, including well-studied cocaine use-related variables. However, additional variables, such as genetic markers, appear to have a high impact on treatment outcomes and need further study., Systematic Review Registration: This systematic review is registered at PROSPERO (ID: CRD42021271847). This study was funded by the Spanish Ministry of Science, Innovation and Universities, Instituto Carlos III (ISCIII) (FIS PI20/00929) and FEDER funds and Fundació Privada Hospital de la Santa Creu i Sant Pau (Pla d'acció social 2020)., (© 2024. The Author(s).)
- Published
- 2024
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424. Improved estimation of the risk of manic relapse by combining clinical and brain scan data.
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Palau P, Solanes A, Madre M, Saez-Francas N, Sarró S, Moro N, Verdolini N, Sanchez M, Alonso-Lana S, Amann BL, Romaguera A, Martin-Subero M, Fortea L, Fuentes-Claramonte P, García-León MA, Munuera J, Canales-Rodríguez EJ, Fernández-Corcuera P, Brambilla P, Vieta E, Pomarol-Clotet E, and Radua J
- Subjects
- Humans, Mania, Recurrence, Brain, Bipolar Disorder diagnostic imaging, Psychotic Disorders diagnosis
- Abstract
Introduction: Estimating the risk of manic relapse could help the psychiatrist individually adjust the treatment to the risk. Some authors have attempted to estimate this risk from baseline clinical data. Still, no studies have assessed whether the estimation could improve by adding structural magnetic resonance imaging (MRI) data. We aimed to evaluate it., Material and Methods: We followed a cohort of 78 patients with a manic episode without mixed symptoms (bipolar type I or schizoaffective disorder) at 2-4-6-9-12-15-18 months and up to 10 years. Within a cross-validation scheme, we created and evaluated a Cox lasso model to estimate the risk of manic relapse using both clinical and MRI data., Results: The model successfully estimated the risk of manic relapse (Cox regression of the time to relapse as a function of the estimated risk: hazard ratio (HR)=2.35, p=0.027; area under the curve (AUC)=0.65, expected calibration error (ECE)<0.2). The most relevant variables included in the model were the diagnosis of schizoaffective disorder, poor impulse control, unusual thought content, and cerebellum volume decrease. The estimations were poorer when we used clinical or MRI data separately., Conclusion: Combining clinical and MRI data may improve the risk of manic relapse estimation after a manic episode. We provide a website that estimates the risk according to the model to facilitate replication by independent groups before translation to clinical settings., (Copyright © 2023 The Author(s). Published by Elsevier España S.L.U. All rights reserved.)
- Published
- 2023
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425. Efflux Pump-Binding 4(3-Aminocyclobutyl)Pyrimidin-2-Amines Are Colloidal Aggregators.
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Szal T, Chauhan SS, Lewe P, Rachad FZ, Madre M, Paunina L, Witt S, Parthasarathi R, and Windshügel B
- Subjects
- Escherichia coli metabolism, Periplasm metabolism, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents metabolism, Multidrug Resistance-Associated Proteins metabolism, Membrane Transport Proteins metabolism, Escherichia coli Proteins metabolism
- Abstract
Efflux pumps are a relevant factor in antimicrobial resistance. In E. coli , the tripartite efflux pump AcrAB-TolC removes a chemically diverse set of antibiotics from the bacterium. Therefore, small molecules interfering with efflux pump function are considered adjuvants for improving antimicrobial therapies. Several compounds targeting the periplasmic adapter protein AcrA and the efflux pump AcrB have been identified to act synergistically with different antibiotics. Among those, several 4(3-aminocyclobutyl)pyrimidin-2-amines have been shown to bind to both proteins. In this study, we intended to identify analogs of these substances with improved binding affinity to AcrA using virtual screening followed by experimental validation. While we succeeded in identifying several compounds showing a synergistic effect with erythromycin on E. coli , biophysical studies suggested that 4(3-aminocyclobutyl)pyrimidin-2-amines form colloidal aggregates that do not bind specifically to AcrA. Therefore, these substances are not suited for further development. Our study emphasizes the importance of implementing additional control experiments to identify aggregators among bioactive compounds.
- Published
- 2023
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426. CBT4CBT web-based add-on treatment for cocaine use disorder: Study protocol for a randomized controlled trial.
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Mallorquí-Bagué N, Palazón-Llecha A, Madre M, Batlle F, Duran-Sindreu S, and Trujols J
- Abstract
Background: Cocaine use disorder (CUD) is a chronic condition that presents high relapse rates and treatment dropouts. Web-based interventions have proven to be effective when optimizing face-to-face treatments in different mental health conditions and have the potential to optimize current CUD treatments. However, web-based interventions in addictive behaviors are still limited. The aim of this study is to evaluate whether adding a web-based cognitive behavioral therapy (i.e., CBT4CBT) to standard CUD treatment, improves treatment outcomes in a Spanish sample of patients with severe CUD (which requires inpatient treatment). Additionally, we aim to explore predictive factors of treatment response and treatment gender-related differences., Methods: All individuals coming for inpatient cocaine detoxification who meet the inclusion criteria will have the possibility to be part of the study. The participants of this open-label randomized controlled clinical trial (RCT) will be allocated to treatment as usual (TAU) or TAU+CBT4CBT after the hospitalization for cocaine detoxification. During the inpatient treatment they will all receive an individualized psychological intervention. There will be six time point assessments: at 48-72 h of starting inpatient treatment, at the end of inpatient treatment and before starting day care and outpatient treatment, at the end of the 8 weeks CTB4CBT / TAU arm treatment and at three follow-up time points (1-, 3-, and 6-months post-treatment)., Discussion: To the best of our knowledge, this is the first RCT that explores the efficacy of adding a web-based cognitive behavioral therapy to usual CUD treatment with patients of a clinical sample in Europe., Trial Registration: IIBSP-CTB-2020-116, NCT05207228. Submitted 8
th of April 2021, posted 26st of January 2022. https://clinicaltrials.gov/ct2/show/NCT05207228?cond=Cocaine+Use+Disorder&draw=2&rank=1., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Mallorquí-Bagué, Palazón-Llecha, Madre, Batlle, Duran-Sindreu and Trujols.)- Published
- 2023
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427. Brain correlates of impaired goal management in bipolar mania.
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Madre M, Fuentes-Claramonte P, Palau P, Sáez N, Moro N, Blanch C, Verdolini N, Garcia-Leon MA, Feria I, Munuera J, Sarró S, Raduà J, McKenna P, Salvador R, and Pomarol-Clotet E
- Subjects
- Humans, Mania, Goals, Brain, Brain Mapping, Magnetic Resonance Imaging, Bipolar Disorder
- Abstract
Background: Although executive impairment has been reported in mania, its brain functional correlates have been relatively little studied. This study examined goal management, believed to be more closely related to executive impairment in daily life than other executive tasks, using a novel functional magnetic resonance imaging (fMRI) paradigm in patients in this illness phase., Methods: Twenty-one currently manic patients with bipolar disorder and 30 matched healthy controls were scanned while performing the Computerized Multiple Elements Test (CMET). This requires participants to sequentially play four simple games, with transition between games being made either voluntarily (executive condition) or automatically (control condition)., Results: CMET performance was impaired in the manic patients compared to the healthy controls. Manic patients failed to increase activation in the lateral frontal, cingulate and inferior parietal cortex when the executive demands of the task increased, while this increase was observed in the healthy controls. Activity in these regions was associated with task performance., Conclusions: Manic patients show evidence of impaired goal management, which is associated with a pattern of reduced medial and lateral frontal and parietal activity.
- Published
- 2023
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428. High incidence of PTSD diagnosis and trauma-related symptoms in a trauma exposed bipolar I and II sample.
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Hogg B, Valiente-Gómez A, Redolar-Ripoll D, Gardoki-Souto I, Fontana-McNally M, Lupo W, Jiménez E, Madre M, Blanco-Presas L, Reinares M, Cortizo R, Massó-Rodriguez A, Castaño J, Argila I, Castro-Rodríguez JI, Comes M, Doñate M, Herrería E, Macias C, Mur E, Novo P, Rosa AR, Vieta E, Radua J, Padberg F, Pérez-Solà V, Moreno-Alcázar A, and Amann BL
- Abstract
Background: Post-traumatic stress disorder (PTSD) is an established comorbidity in Bipolar Disorder (BD), but little is known about the characteristics of psychological trauma beyond a PTSD diagnosis and differences in trauma symptoms between BD-I and BD-II., Objective: (1) To present characteristics of a trauma-exposed BD sample; (2) to investigate prevalence and trauma symptom profile across BD-I and BD-II; (3) to assess the impact of a lifetime PTSD diagnosis vs. a history of trauma on BD course; and (4) to research the impacts of sexual and physical abuse., Methods: This multi-center study comprised 79 adult participants with BD with a history of psychological trauma and reports baseline data from a trial registered in Clinical Trials (https://clinicaltrials.gov; ref: NCT02634372). Clinical variables were gathered through clinical interview, validated scales and a review of case notes., Results: The majority (80.8%) of our sample had experienced a relevant stressful life event prior to onset of BD, over half of our sample 51.9% had a lifetime diagnosis of PTSD according to the Clinician Administered PTSD scale. The mean Impact of Event Scale-Revised scores indicated high levels of trauma-related distress across the sample, including clinical symptoms in the PTSD group and subsyndromal symptoms in the non-PTSD group. Levels of dissociation were not higher than normative values for BD. A PTSD diagnosis (vs. a history of trauma) was associated with psychotic symptoms [2(1) = 5.404, p = 0.02] but not with other indicators of BD clinical severity. There was no significant difference between BD-I and BD-II in terms of lifetime PTSD diagnosis or trauma symptom profile. Sexual abuse significantly predicted rapid cycling [2(1) = 4.15, p = 0.042], while physical abuse was not significantly associated with any clinical indicator of severity., Conclusion: Trauma load in BD is marked with a lack of difference in trauma profile between BD-I and BD-II. Although PTSD and sexual abuse may have a negative impact on BD course, in many indicators of BD severity there is no significant difference between PTSD and subsyndromal trauma symptoms. Our results support further research to clarify the role of subsyndromic PTSD symptoms, and highlight the importance of screening for trauma in BD patients., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Hogg, Valiente-Gómez, Redolar-Ripoll, Gardoki-Souto, Fontana-McNally, Lupo, Jiménez, Madre, Blanco-Presas, Reinares, Cortizo, Massó-Rodriguez, Castaño, Argila, Castro-Rodríguez, Comes, Doñate, Herrería, Macias, Mur, Novo, Rosa, Vieta, Radua, Padberg, Pérez-Solà, Moreno-Alcázar and Amann.)
- Published
- 2022
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429. Combining fMRI and DISC1 gene haplotypes to understand working memory-related brain activity in schizophrenia.
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Guardiola-Ripoll M, Sotero-Moreno A, Almodóvar-Payá C, Hostalet N, Guerrero-Pedraza A, Ramiro N, Ortiz-Gil J, Arias B, Madre M, Soler-Vidal J, Salvador R, McKenna PJ, Pomarol-Clotet E, and Fatjó-Vilas M
- Subjects
- Brain metabolism, Haplotypes, Humans, Magnetic Resonance Imaging, Memory, Short-Term, Nerve Tissue Proteins genetics, Nerve Tissue Proteins metabolism, Polymorphism, Single Nucleotide, Schizophrenia diagnostic imaging, Schizophrenia genetics
- Abstract
The DISC1 gene is one of the most relevant susceptibility genes for psychosis. However, the complex genetic landscape of this locus, which includes protective and risk variants in interaction, may have hindered consistent conclusions on how DISC1 contributes to schizophrenia (SZ) liability. Analysis from haplotype approaches and brain-based phenotypes can contribute to understanding DISC1 role in the neurobiology of this disorder. We assessed the brain correlates of DISC1 haplotypes associated with SZ through a functional neuroimaging genetics approach. First, we tested the association of two DISC1 haplotypes, the HEP1 (rs6675281-1000731-rs999710) and the HEP3 (rs151229-rs3738401), with the risk for SZ in a sample of 138 healthy subjects (HS) and 238 patients. This approach allowed the identification of three haplotypes associated with SZ (HEP1-CTG, HEP3-GA and HEP3-AA). Second, we explored whether these haplotypes exerted differential effects on n-back associated brain activity in a subsample of 70 HS compared to 70 patients (diagnosis × haplotype interaction effect). These analyses evidenced that HEP3-GA and HEP3-AA modulated working memory functional response conditional to the health/disease status in the cuneus, precuneus, middle cingulate cortex and the ventrolateral and dorsolateral prefrontal cortices. Our results are the first to show a diagnosis-based effect of DISC1 haplotypes on working memory-related brain activity, emphasising its role in SZ., (© 2022. The Author(s).)
- Published
- 2022
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430. Structural abnormality in schizophrenia versus bipolar disorder: A whole brain cortical thickness, surface area, volume and gyrification analyses.
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Madre M, Canales-Rodríguez EJ, Fuentes-Claramonte P, Alonso-Lana S, Salgado-Pineda P, Guerrero-Pedraza A, Moro N, Bosque C, Gomar JJ, Ortíz-Gil J, Goikolea JM, Bonnin CM, Vieta E, Sarró S, Maristany T, McKenna PJ, Salvador R, and Pomarol-Clotet E
- Subjects
- Adult, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Bipolar Disorder pathology, Brain Cortical Thickness, Cerebral Cortex pathology, Schizophrenia pathology
- Abstract
Objectives: The profiles of cortical abnormalities in schizophrenia and bipolar disorder, and how far they resemble each other, have only been studied to a limited extent. The aim of this study was to identify and compare the changes in cortical morphology associated with these pathologies., Methods: A total of 384 subjects, including 128 patients with schizophrenia, 128 patients with bipolar disorder and 127 sex-age-matched healthy subjects, were examined using cortical surface-based morphology. Four cortical structural measures were studied: cortical volume (CV), cortical thickness (CT), surface area (SA) and gyrification index (GI). Group comparisons for each separate cortical measure were conducted., Results: At a threshold of P = 0.05 corrected, both patient groups showed significant widespread CV and CT reductions in similar areas compared to healthy subjects. However, the changes in schizophrenia were more pronounced. While CV decrease in bipolar disorder was exclusively explained by cortical thinning, in schizophrenia it was driven by changes in CT and partially by SA. Reduced GI was only found in schizophrenia. The direct comparison between both disorders showed significant reductions in all measures in patients with schizophrenia., Conclusions: Cortical volume and cortical thickness deficits are shared between patients with schizophrenia and bipolar disorder, suggesting that both pathologies may be affected by similar environmental and neurodegenerative factors. However, the exclusive alteration in schizophrenia of metrics related to the geometry and curvature of the brain cortical surface (SA, GI) suggests that this group is influenced by additional neurodevelopmental and genetic factors., Competing Interests: Declaration of Competing of Interest All authors declare that they have no conflicts of interest., (Copyright © 2019 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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431. Results of interviews with families of non-heart-beating donor candidates.
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Mateos Rodríguez AA, Aparicio Madre M, Díez Collar MC, Torres González JI, Villar Arias A, and Del Río Gallegos FJ
- Subjects
- Adult, Female, Humans, Interviews as Topic, Male, Middle Aged, Motivation, Prospective Studies, Spain, Attitude to Health, Death, Family, Professional-Family Relations, Tissue and Organ Procurement statistics & numerical data
- Published
- 2019
432. N -Leucinyl Benzenesulfonamides as Structurally Simplified Leucyl-tRNA Synthetase Inhibitors.
- Author
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Charlton MH, Aleksis R, Saint-Leger A, Gupta A, Loza E, Ribas de Pouplana L, Kaula I, Gustina D, Madre M, Lola D, Jaudzems K, Edmund G, Randall CP, Kime L, O'Neill AJ, Goessens W, Jirgensons A, and Finn PW
- Abstract
N -Leucinyl benzenesulfonamides have been discovered as a novel class of potent inhibitors of E. coli leucyl-tRNA synthetase. The binding of inhibitors to the enzyme was measured by using isothermal titration calorimetry. This provided information on enthalpy and entropy contributions to binding, which, together with docking studies, were used for structure-activity relationship analysis. Enzymatic assays revealed that N -leucinyl benzenesulfonamides display remarkable selectivity for E. coli leucyl-tRNA synthetase compared to S. aureus and human orthologues. The simplest analogue of the series, N -leucinyl benzenesulfonamide (R = H), showed the highest affinity against E. coli leucyl-tRNA synthetase and also exhibited antibacterial activity against Gram-negative pathogens (the best MIC = 8 μg/mL, E. coli ATCC 25922), which renders it as a promising template for antibacterial drug discovery., Competing Interests: The authors declare no competing financial interest.
- Published
- 2018
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433. Eye movement desensitization and reprocessing therapy versus supportive therapy in affective relapse prevention in bipolar patients with a history of trauma: study protocol for a randomized controlled trial.
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Moreno-Alcázar A, Radua J, Landín-Romero R, Blanco L, Madre M, Reinares M, Comes M, Jiménez E, Crespo JM, Vieta E, Pérez V, Novo P, Doñate M, Cortizo R, Valiente-Gómez A, Lupo W, McKenna PJ, Pomarol-Clotet E, and Amann BL
- Subjects
- Adolescent, Adult, Affect, Aged, Bipolar Disorder diagnosis, Bipolar Disorder psychology, Clinical Protocols, Cognition, Female, Humans, Intelligence Tests, Male, Middle Aged, Psychiatric Status Rating Scales, Recurrence, Research Design, Severity of Illness Index, Single-Blind Method, Spain, Surveys and Questionnaires, Time Factors, Treatment Outcome, Wounds and Injuries diagnosis, Young Adult, Bipolar Disorder therapy, Eye Movement Desensitization Reprocessing, Wounds and Injuries psychology
- Abstract
Background: Up to 60% of patients with bipolar disorder (BD) have a history of traumatic events, which is associated with greater episode severity, higher risk of comorbidity and higher relapse rates. Trauma-focused treatment strategies for BD are thus necessary but studies are currently scarce. The aim of this study is to examine whether Eye Movement Desensitization and Reprocessing (EMDR) therapy focusing on adherence, insight, de-idealisation of manic symptoms, prodromal symptoms and mood stabilization can reduce episode severity and relapse rates and increase cognitive performance and functioning in patients with BD., Methods/design: This is a single-blind, randomized controlled, multicentre trial in which 82 patients with BD and a history of traumatic events will be recruited and randomly allocated to one of two treatment arms: EMDR therapy or supportive therapy. Patients in both groups will receive 20 psychotherapeutic sessions, 60 min each, during 6 months. The primary outcome is a reduction of affective episodes after 12 and 24 months in favour of the EMDR group. As secondary outcome we postulate a greater reduction in affective symptoms in the EMDR group (as measured by the Bipolar Depression Rating Scale, the Young Mania Rating Scale and the Clinical Global Impression Scale modified for BD), and a better performance in cognitive state, social cognition and functioning (as measured by the Screen for Cognitive Impairment in Psychiatry, The Mayer-Salovey-Caruso Emotional Intelligence Test and the Functioning Assessment Short Test, respectively). Traumatic events will be evaluated by The Holmes-Rahe Life Stress Inventory, the Clinician-administered PTSD Scale and the Impact of Event Scale., Discussion: The results of this study will provide evidence whether a specific EMDR protocol for patients with BD is effective in reducing affective episodes, affective symptoms and functional, cognitive and trauma symptoms., Trial Registration: The trial is registered at ClinicalTrials.gov, identifier: NCT02634372 . Registered on 3 December 2015.
- Published
- 2017
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434. Surface-based brain morphometry and diffusion tensor imaging in schizoaffective disorder.
- Author
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Landin-Romero R, Canales-Rodríguez EJ, Kumfor F, Moreno-Alcázar A, Madre M, Maristany T, Pomarol-Clotet E, and Amann BL
- Subjects
- Adult, Diffusion Tensor Imaging methods, Female, Humans, Male, Middle Aged, Gray Matter diagnostic imaging, Magnetic Resonance Imaging methods, Psychotic Disorders diagnostic imaging, White Matter diagnostic imaging
- Abstract
Background: The profile of grey matter abnormalities and related white-matter pathology in schizoaffective disorder has only been studied to a limited extent. The aim of this study was to identify grey- and white-matter abnormalities in patients with schizoaffective disorder using complementary structural imaging techniques., Methods: Forty-five patients meeting Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition criteria and Research Diagnostic Criteria for schizoaffective disorder and 45 matched healthy controls underwent structural-T1 and diffusion magnetic resonance imaging to enable surface-based brain morphometry and diffusion tensor imaging analyses. Analyses were conducted to determine group differences in cortical volume, cortical thickness and surface area, as well as in fractional anisotropy and mean diffusivity., Results: At a threshold of p = 0.05 corrected, all measures revealed significant differences between patients and controls at the group level. Spatial overlap of abnormalities was observed across the various structural neuroimaging measures. In grey matter, patients with schizoaffective disorder showed abnormalities in the frontal and temporal lobes, striatum, fusiform, cuneus, precuneus, lingual and limbic regions. White-matter abnormalities were identified in tracts connecting these areas, including the corpus callosum, superior and inferior longitudinal fasciculi, anterior thalamic radiation, uncinate fasciculus and cingulum bundle., Conclusion: The spatial overlap of abnormalities across the different imaging techniques suggests widespread and consistent brain pathology in schizoaffective disorder. The abnormalities were mainly detected in areas that have commonly been reported to be abnormal in schizophrenia, and to some extent in bipolar disorder, which may explain the clinical and aetiological overlap in these disorders.
- Published
- 2017
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435. Transcultural adaption and validation of the Spanish version of the Bipolar Depression Rating Scale (BDRS-S).
- Author
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Sarró S, Madre M, Fernández-Corcuera P, Valentí M, Goikolea JM, Pomarol-Clotet E, Berk M, and Amann BL
- Subjects
- Adult, Bipolar Disorder psychology, Depression diagnosis, Depressive Disorder, Major diagnosis, Factor Analysis, Statistical, Female, Hospitals, Psychiatric, Humans, Language, Male, Middle Aged, Psychiatry, Psychometrics, Psychopathology, Reproducibility of Results, Spain, Bipolar Disorder diagnosis, Cultural Characteristics, Ethnopsychology methods, Hispanic or Latino psychology, Psychiatric Status Rating Scales standards, Translations
- Abstract
Background: The Bipolar Depression Rating Scale (BDRS) arguably better captures symptoms in bipolar depression especially depressive mixed states than traditional unipolar depression rating scales. The psychometric properties of the Spanish adapted version, BDRS-S, are reported., Methods: The BDRS was translated into Spanish by two independent psychiatrists fluent in English and Spanish. After its back-translation into English, the BDRS-S was administered to 69 DSMI-IV bipolar I and II patients who were recruited from two Spanish psychiatric hospitals. The Hamilton Depression Rating Scale (HDRS), the Montgomery-Asberg Depression Rating Scale (MADRS) and the Young Mania Rating Scale (YMRS) were concurrently administered. 42 patients were reviewed via video by four psychiatrists blind to the psychopathological status of those patients. In order to assess the BDRS-S intra-rater or test-retest validity, 22 subjects were assessed by the same investigator performing two evaluations within five days., Results: The BDRS-S had a good internal consistency (Cronbach׳s α=0.870). We observed strong correlations between the BDRS-S and the HDRS (r=0.874) and MADRS (r=0.854) and also between the mixed symptom cluster score of the BDRS-S and the YMRS (r=0.803). Exploratory factor analysis revealed a three factor solution: psychological depressive symptoms cluster, somatic depressive symptoms cluster and mixed symptoms cluster., Limitations: A relatively small sample size for a 20-item scale., Conclusions: The BDRS-S provides solid psychometric performance and in particular captures depressive or mixed symptoms in Spanish bipolar patients., (Copyright © 2014 Elsevier B.V. All rights reserved.)
- Published
- 2015
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436. Trait or state? A longitudinal neuropsychological evaluation and fMRI study in schizoaffective disorder.
- Author
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Madre M, Radua J, Landin-Romero R, Alonso-Lana S, Salvador R, Panicali F, Pomarol-Clotet E, and Amann BL
- Subjects
- Adult, Disease Progression, Female, Humans, Longitudinal Studies, Magnetic Resonance Imaging, Male, Memory, Short-Term physiology, Middle Aged, Neuropsychological Tests, Executive Function physiology, Frontal Lobe physiopathology, Memory physiology, Psychotic Disorders physiopathology
- Abstract
Schizoaffective patients can have neurocognitive deficits and default mode network dysfunction while being acutely ill. It remains unclear to what extent these abnormalities persist when they go into clinical remission. Memory and executive function were tested in 22 acutely ill schizoaffective patients; they also underwent fMRI scanning during performance of the n-back working memory test. The same measures were obtained after they had been in remission for ≥ 2 months. Twenty-two matched healthy individuals were also examined. In clinical remission, schizomanic patients showed an improvement of memory but not of executive function, while schizodepressive patients did not change in either domain. All schizoaffective patients in clinical remission showed memory and executive impairment compared to the controls. On fMRI, acutely ill schizomanic patients had reversible frontal hypo-activation when compared to clinical remission, while activation patterns in ill and remitted schizodepressive patients were similar. The whole group of schizoaffective patients in clinical remission showed a failure of de-activation in the medial frontal gyrus compared to the healthy controls. There was evidence for memory improvement and state dependent changes in activation in schizomanic patients across relapse and remission. Medial frontal failure of de-activation in remitted schizoaffective patients, which probably reflects default mode network dysfunction, appears to be a state independent feature of the illness., (Copyright © 2014 Elsevier B.V. All rights reserved.)
- Published
- 2014
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437. Abnormal P300 in people with high risk of developing psychosis.
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Bramon E, Shaikh M, Broome M, Lappin J, Bergé D, Day F, Woolley J, Tabraham P, Madre M, Johns L, Howes O, Valmaggia L, Pérez V, Sham P, Murray RM, and McGuire P
- Subjects
- Adolescent, Electroencephalography, Event-Related Potentials, P300, Evoked Potentials, Auditory, Female, Humans, Male, Neuropsychological Tests, Risk Factors, Brain physiopathology, Psychotic Disorders physiopathology
- Abstract
Background: Individuals with an "at-risk mental state" (or "prodromal" symptoms) have a 20-40% chance of developing psychosis; however it is difficult to predict which of them will become ill on the basis of their clinical symptoms alone. We examined whether neurophysiological markers could help to identify those who are particularly vulnerable., Method: 35 cases meeting PACE criteria for the at-risk mental state (ARMS) and 57 controls performed an auditory oddball task whilst their electroencephalogram was recorded. The latency and amplitude of the P300 and N100 waves were compared between groups using linear regression., Results: The P300 amplitude was significantly reduced in the ARMS group [8.6+/-6.4 microvolt] compared to controls [12.7+/-5.8 microvolt] (p<0.01). There were no group differences in P300 latency or in the amplitude and latency of the N100. Of the at-risk subjects that were followed up, seven (21%) developed psychosis., Conclusion: Reduction in the amplitude of the P300 is associated with an increased vulnerability to psychosis. Neurophysiological and other biological markers may be of use to predict clinical outcomes in populations at high risk.
- Published
- 2008
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438. Sulfur containing acyclovir derivatives: synthesis, cytotoxic activity, and cell phenotype studies.
- Author
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Ikaunieks M, Shestakova I, Domracheva I, Belyakov S, and Madre M
- Subjects
- Antineoplastic Agents chemistry, Cell Line, Tumor, Humans, Sulfur Compounds chemistry, Acyclovir analogs & derivatives, Antineoplastic Agents chemical synthesis, Antineoplastic Agents pharmacology, Sulfur Compounds chemical synthesis, Sulfur Compounds pharmacology
- Abstract
New 2-amino-6-oxo-8-thioxo-9-substituted purine derivatives were prepared and assayed for the in vitro cytotoxic activity. Some products exhibited moderate activity on HT-1080 cells and rather high activity on MG-22A cells.
- Published
- 2007
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439. [A naturalistic study: 100 consecutive episodes of acute agitation in a psychiatric emergency department].
- Author
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Pascual JC, Madre M, Puigdemont D, Oller S, Corripio I, Díaz A, Faus G, Perez V, and Alvarez E
- Subjects
- Adult, Female, Hospitalization, Hospitals, Psychiatric, Humans, Male, Psychomotor Agitation diagnosis, Psychomotor Agitation epidemiology, Surveys and Questionnaires, Emergency Services, Psychiatric, Psychomotor Agitation rehabilitation
- Abstract
Introduction: Psychomotor agitation is a common event in psychiatric emergency services (PES) with a prevalence of approximately 10 %. There is no general consensus on to how to manage psychomotor agitation; benzodiazepines, typical antipsychotics and now atypical antipsychotics have demonstrated similar efficacy. The aim of our study was to describe the epidemiology and clinical management of agitation in "real-life" in a psychiatric emergency service., Methods: A naturalistic study was performed in acutely agitated patients recruited consecutively in a psychiatric emergency service. Demographics, clinical and therapeutic characteristics were analyzed. Efficacy was assessed by the Excitement Component of the Positive and Negative Syndrome Scale (PANSS-EC) and the Agitation-Calmness Evaluation Scale (ACES). Pragmatic variables such as the need for second pharmacological intervention and the need for physical restraints were assessed., Results: The study included 100 patients with psychomotor agitation. Mean age was 36.2 % and 54% were women. The most prevalent diagnoses were psychotic disorder (48 %) and personality disorder (24 %). Physical restraint was required in 39 % of patients and 52 % accepted oral treatment. Haloperidol was the most frequent oral treatment and olanzapine was the most frequent intramuscular treatment., Conclusions: A naturalistic approach provides data based on clinical reality in psychiatric emergency services. Strict research designs of clinical trials of efficacy imply sample selection biases and are generally distanced from the clinical reality. Atypical antipsychotics have become the first-line treatment in acute agitation
- Published
- 2006
440. Efficient synthesis of 8-thiosubstituted guanine derivatives as potential tools for biochemical and biological studies.
- Author
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Ikaunieks M and Madre M
- Subjects
- Alkylation, Biochemistry methods, Drug Design, Guanine analogs & derivatives, Guanine chemical synthesis, Sulfhydryl Compounds
- Abstract
A method for the selective introduction of the N2-(dimethylamino)methylene group into 8-thio-9-(2-hydroxyethoxymethyl)guanine (1) has been developed. The effect of the N2-amidine protection on the S-alkylation of 1 was studied.
- Published
- 2003
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441. Biomesogenic matrix systems.
- Author
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Meister WV, Lindau S, Hauser AL, Bohley C, Gromann U, Naumann S, Madre M, Kovalenko L, Bischoff G, Zhuk R, and Hoffmann S
- Subjects
- Adenine analogs & derivatives, Adenine chemistry, Adenosine chemistry, Calorimetry, Differential Scanning, Macromolecular Substances, Magnetic Resonance Spectroscopy, Microscopy, Polarization, Models, Molecular, Nucleic Acid Conformation, Poly U chemistry, Thermodynamics, Polyribonucleotides chemistry
- Abstract
The bifunctionally reactive nucleoside and distant nucleoside analogs adenosine (Ado), S-[(adenine-9-yl)methoxyethyl]-L-cysteine (Na-salt) (cysA) and 9-vinyladenine (vA) in aqueous solutions assemble on complementary polyuridylic acid templates to form complex lyomesophases. The systems are investigated by polarizing microscopy, differential scanning calorimetry (DSC) and 1H- and 31P-nmr spectroscopies, assisted by molecular modeling studies. The results indicate the importance of biomesogenic (pre)ordering in nucleic acid native and artificial matrix reactions.
- Published
- 2000
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442. [Lead blood levels in children in the metropolitan area of Madrid].
- Author
-
Vázquez García ML, Ordóñez Iriarte JM, and Aparicio Madre MI
- Subjects
- Child, Female, Humans, Male, Socioeconomic Factors, Spain, Lead Poisoning blood, Suburban Health
- Abstract
The objective is to determine the blood lead levels of the children (7-8 years of age) living in some of Madrid's satellite towns, and to establish links between these levels and different socioeconomic items, life styles and environmental factors, among other variables. A cross-sectional study using a sample based on 205 schoolchildren of Second Grade Primary Education, was under taken during 1995. Venous blood samples were analysed through atomic absorption spectrophotometry. Parents answered a questionnaire with items used in this study. The average blood lead level found was 3.9 mud/dl (CI 95% 3.7-4.1), with higher levels among the children of the Northern zone of Madrid. Between the associated factors to blood lead level was found to be the habit of nail biting, mother's studies and some variables associated with habitual dwelling. We reached the conclusion that the blood lead levels of Madrid's suburban children are low.
- Published
- 1998
- Full Text
- View/download PDF
443. [Lead in the blood of a maternal-child population of the community of Madrid].
- Author
-
Ordóñez Iriarte JM, Aparicio Madre MI, Daponte Codina A, Rodríguez Rumayor G, and Perales Encinas R
- Subjects
- Cross-Sectional Studies, Female, Humans, Infant, Newborn, Mothers, Spain, Urban Population, Lead blood
- Published
- 1993
444. [Purine nucleoside analogs. 5. Acycloguanosine derivatives containing O-alkoxyalkyl substituents in acyclic parts of the molecule].
- Author
-
Madre MA, Zhuk RA, and Lidak MIu
- Subjects
- Acyclovir pharmacology, Antiviral Agents pharmacology, Magnetic Resonance Spectroscopy, Purine Nucleosides pharmacology, Simplexvirus drug effects, Acyclovir chemistry, Antiviral Agents chemistry, Purine Nucleosides chemistry
- Abstract
A series of new acycloguanosine O-alkoxyalkyl derivatives have been obtained by the reaction of 9-(2-hydroxyethoxymethyl)- and 8-bromo-9-(2-hydroxyethoxymethyl)-N2-acetylguanines with cyclic and acyclic alpha-vinyl ethers. 9-[2-(Alkoxyalkyl)oxyethoxymethyl]-N2-acetylguanines are better soluble in water and low-polar organic solvents as compared with acycloguanosine. The compounds have the pronounced antiviral activity against HSV-I in the experiments in vivo and can be applied as acycloguanosine prodrugs.
- Published
- 1991
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