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1.
Actas dermo-sifiliogr. (Ed. impr.) ; 115(4): 341-346, Abr. 2024. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-231987

RESUMO

Antecedentes: Debido a la eclosión en el último quinquenio de nuevas alternativas terapéuticas para la dermatitis atópica (DA), nos planteamos estudiar la supervivencia actual de la ciclosporina (CsA) en esta patología. La CsA, como paso necesario solicitado por el Sistema Nacional de Salud de España para la autorización de otros tratamientos sistémicos, podría presentar una supervivencia menor que en otras enfermedades. Material y método: Estudio multicéntrico, observacional, de cohortes prospectivo para el que se recogieron pacientes incluidos en el Registro Español de Dermatitis Atópica (BIOBADATOP). Como cohorte de comparación se emplearon los datos del Registro Español de tratamientos sistémicos en Psoriasis (BIOBADADERM). Resultados: Se incluyeron 130 pacientes diagnosticados de DA que habían recibido CsA (mediana de supervivencia de CsA: 1 año). En el grupo comparador se incluyeron 150 pacientes psoriásicos que habían recibido CsA (mediana de supervivencia: 0,37 años). Observamos una mayor supervivencia de la CsA en los pacientes con DA en comparación con los pacientes psoriásicos (p<0,001). Conclusión: La supervivencia de la CsA en BIOBADATOP es similar a la descrita en otras series de pacientes con DA, y superior a la observada en los pacientes con psoriasis en el registro BIOBADADERM.(AU)


Background: The past 5 years have seen a proliferation of new treatments for atopic dermatitis (AD). We analyzed recent drug survival data for cyclosporine in this setting. Because the Spanish National Healthcare system requires patients with AD to be treated with cyclosporine before they can be prescribed other systemic treatments, drug survival for cyclosporine may be shorter than in other diseases. Material and method: Multicenter, observational, prospective cohort study using data from the Spanish Atopic Dermatitis Registry (BIOBADATOP). Data from the Spanish Registry of Systemic Treatments in Psoriasis (BIOBADADERM) were used to create a comparison cohort. Results: We analyzed data for 130 patients with AD treated with cyclosporine (median drug survival, 1 year). Median cyclosporine survival in the psoriasis comparison group (150 patients) was 0.37 years. Drug survival was significantly longer in AD than in psoriasis (P<.001). Conclusion: Drug survival of cyclosporine in the BIOBADATOP registry is similar to that described in other series of patients with AD and longer than that observed in the BIOBADADERM psoriasis registry.(AU)


Assuntos
Humanos , Masculino , Feminino , Dermatite Atópica/tratamento farmacológico , Ciclosporina , Ficha Clínica , Análise de Sobrevida , Dermatologia , Dermatopatias , Espanha , Estudos de Coortes , Estudos Prospectivos
2.
Actas dermo-sifiliogr. (Ed. impr.) ; 115(4): T341-T346, Abr. 2024. tab, gra
Artigo em Inglês | IBECS | ID: ibc-231988

RESUMO

Antecedentes: Debido a la eclosión en el último quinquenio de nuevas alternativas terapéuticas para la dermatitis atópica (DA), nos planteamos estudiar la supervivencia actual de la ciclosporina (CsA) en esta patología. La CsA, como paso necesario solicitado por el Sistema Nacional de Salud de España para la autorización de otros tratamientos sistémicos, podría presentar una supervivencia menor que en otras enfermedades. Material y método: Estudio multicéntrico, observacional, de cohortes prospectivo para el que se recogieron pacientes incluidos en el Registro Español de Dermatitis Atópica (BIOBADATOP). Como cohorte de comparación se emplearon los datos del Registro Español de tratamientos sistémicos en Psoriasis (BIOBADADERM). Resultados: Se incluyeron 130 pacientes diagnosticados de DA que habían recibido CsA (mediana de supervivencia de CsA: 1 año). En el grupo comparador se incluyeron 150 pacientes psoriásicos que habían recibido CsA (mediana de supervivencia: 0,37 años). Observamos una mayor supervivencia de la CsA en los pacientes con DA en comparación con los pacientes psoriásicos (p<0,001). Conclusión: La supervivencia de la CsA en BIOBADATOP es similar a la descrita en otras series de pacientes con DA, y superior a la observada en los pacientes con psoriasis en el registro BIOBADADERM.(AU)


Background: The past 5 years have seen a proliferation of new treatments for atopic dermatitis (AD). We analyzed recent drug survival data for cyclosporine in this setting. Because the Spanish National Healthcare system requires patients with AD to be treated with cyclosporine before they can be prescribed other systemic treatments, drug survival for cyclosporine may be shorter than in other diseases. Material and method: Multicenter, observational, prospective cohort study using data from the Spanish Atopic Dermatitis Registry (BIOBADATOP). Data from the Spanish Registry of Systemic Treatments in Psoriasis (BIOBADADERM) were used to create a comparison cohort. Results: We analyzed data for 130 patients with AD treated with cyclosporine (median drug survival, 1 year). Median cyclosporine survival in the psoriasis comparison group (150 patients) was 0.37 years. Drug survival was significantly longer in AD than in psoriasis (P<.001). Conclusion: Drug survival of cyclosporine in the BIOBADATOP registry is similar to that described in other series of patients with AD and longer than that observed in the BIOBADADERM psoriasis registry.(AU)


Assuntos
Humanos , Masculino , Feminino , Dermatite Atópica/tratamento farmacológico , Ciclosporina , Ficha Clínica , Análise de Sobrevida , Dermatologia , Dermatopatias , Espanha , Estudos de Coortes , Estudos Prospectivos
3.
Actas Dermosifiliogr ; 115(4): T341-T346, 2024 Apr.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-38325545

RESUMO

BACKGROUND: The past 5 years have seen a proliferation of new treatments for atopic dermatitis (AD). We analyzed recent drug survival data for cyclosporine in this setting. Because the Spanish National Healthcare system requires patients with AD to be treated with cyclosporine before they can be prescribed other systemic treatments, drug survival for cyclosporine may be shorter than in other diseases. MATERIAL AND METHOD: Multicenter, observational, prospective cohort study using data from the Spanish Atopic Dermatitis Registry (BIOBADATOP). Data from the Spanish Registry of Systemic Treatments in Psoriasis (BIOBADADERM) were used to create a comparison cohort. RESULTS: We analyzed data for 130 patients with AD treated with cyclosporine (median drug survival, 1 year). Median cyclosporine survival in the psoriasis comparison group (150 patients) was 0.37 years. Drug survival was significantly longer in AD than in psoriasis (P<.001). CONCLUSION: Drug survival of cyclosporine in the BIOBADATOP registry is similar to that described in other series of patients with AD and longer than that observed in the BIOBADADERM psoriasis registry.


Assuntos
Dermatite Atópica , Psoríase , Humanos , Ciclosporina/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Imunossupressores/uso terapêutico , Estudos Prospectivos , Psoríase/tratamento farmacológico , Sistema de Registros , Resultado do Tratamento
4.
Actas Dermosifiliogr ; 115(4): 341-346, 2024 Apr.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-37482292

RESUMO

BACKGROUND: The past 5 years have seen a proliferation of new treatments for atopic dermatitis (AD). We analyzed recent drug survival data for cyclosporine in this setting. Because the Spanish National Healthcare system requires patients with AD to be treated with cyclosporine before they can be prescribed other systemic treatments, drug survival for cyclosporine may be shorter than in other diseases. MATERIAL AND METHOD: Multicenter, observational, prospective cohort study using data from the Spanish Atopic Dermatitis Registry (BIOBADATOP). Data from the Spanish Registry of Systemic Treatments in Psoriasis (BIOBADADERM) were used to create a comparison cohort. RESULTS: We analyzed data for 130 patients with AD treated with cyclosporine (median drug survival, 1 year). Median cyclosporine survival in the psoriasis comparison group (150 patients) was 0.37 years. Drug survival was significantly longer in AD than in psoriasis (P<.001). CONCLUSION: Drug survival of cyclosporine in the BIOBADATOP registry is similar to that described in other series of patients with AD and longer than that observed in the BIOBADADERM psoriasis registry.


Assuntos
Dermatite Atópica , Psoríase , Humanos , Ciclosporina/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Imunossupressores/uso terapêutico , Estudos Prospectivos , Psoríase/tratamento farmacológico , Sistema de Registros , Resultado do Tratamento
5.
Odontol. vital ; (39): 5-16, jul.-dic. 2023. tab
Artigo em Espanhol | LILACS, SaludCR | ID: biblio-1550583

RESUMO

RESUMEN Objetivo: Comparar la cantidad y características de las prótesis dentales removibles parciales y totales, en el servicio de odontología del Hospital Nacional de Geriatría y Gerontología, en el periodo de tiempo comprendido del 1 de enero 2005 al 31 de diciembre 2008, equivalentes a 326 expedientes. Se tomó la base de datos del servicio de odontología de consulta externa especializada de los pacientes atendidos de los años 2005 al 2008, en los cuales se entregaron un total de 2786 prótesis dentales removibles. Materiales y métodos: Con base en el dato anterior se seleccionó la muestra no aleatoria a conveniencia hasta alcanzar el tamaño de 599 prótesis entregadas, examinando 326 expedientes del periodo de enero del 2005 a diciembre del 2008, con un nivel de confianza de 99% y un error de muestreo de 0.0466. La recolección de datos se realizó por medio del programa Microsoft Excel donde se utilizó una tabla en la que se anotó el número de expediente, fecha de inicio y conclusión de prótesis, tipo de prótesis, cantidad y color de prótesis, edad, género y domicilio del paciente por distrito, cantón y provincia. El procesamiento se realizó por medio de estadística descriptiva utilizando cuadros y gráficos. Resultados: Se determinó que el mayor porcentaje de rango de edad de personas que solicitaron prótesis removibles fue de 62 a 65 años, independiente si eran prótesis totales o parciales, los pacientes que requirieron dos prótesis fueron 273 de 326, en su mayoría los pacientes solicitaron prótesis totales para un total de 372 de 599 prótesis entregadas. De la guía de color utilizada en el HRBC los colores más requeridos fueron los tonos claros blanco amarillentos que corresponde al número 62 y 65; de los expedientes analizados la mayoría de los pacientes residían en San José con un total de 200 pacientes. Se concluye que el mayor porcentaje de edentulismo que se presento es el edentulismo total con un 62%, la prótesis más utilizada es la prótesis total superior removible y en su mayoría los pacientes requieren dos prótesis, con respecto al color no es concluyente para este estudio debido a los datos no disponibles en los expedientes analizados.


ABSTRACT Objective: Compare the quantity and characteristics of partial and total removable dental prostheses, in the dentistry service of the National Hospital of Geriatrics and Gerontology, in the period from January 1, 2005 to December 31, 2008. The database of the specialized outpatient dentistry service of the patients treated from 2005 to 2008 was taken, in which a total of 2786 removable dentures were delivered. Materials and methods: Based on the previous data, the non-random sample was selected for convenience until reaching the size of 599 protheses of 326 files, with a confidence level of 99% and a sampling error of 0.0466. Data collection was carried out through the Microsoft Excel program where a table was used in which the file number, date of start and conclusion of the prosthesis, type of prosthesis, amount and color of prosthesis, age, gender and address were used of the patient by district, canton and province. The processing was carried out by means of descriptive statistics using tables and graphs. Results: It was determined that the highest percentage of the age range of people who requested removable prostheses was 62 to 65 years, the patients that required two prostheses were 273 of 326. In their majority, the patients requested total prostheses for a total of 372 of 599 prostheses delivered. Of the color guide used in the HRBC, the most requested colors were the light yellowish-white tones corresponding to the number 62 and 65; of the files analyzed, most of the patients resided in San José with a total of 200 patients. Conclusion: It is concluded that the highest percentage of edentulism that is presented is total edentulism with 62%, the most commonly used prosthesis is the removable upper total prosthesis and for the most part patients require two prostheses, with respect to color it is inconclusive for this study due to data not available in the analyzed files.


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Prótese Total/estatística & dados numéricos , Prótese Parcial Removível/estatística & dados numéricos , Costa Rica , Encaixe de Precisão de Dentadura
7.
Actas Dermosifiliogr ; 114(6): 479-487, 2023 Jun.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-36935039

RESUMO

BACKGROUND: In recent years, remarkable improvements in our understanding of atopic dermatitis (AD) have revolutionized treatment perspectives, but access to reliable data from clinical practice is essential. MATERIALS AND METHOD: The Spanish Atopic Dermatitis Registry, BIOBADATOP, is a prospective, multicenter database that collects information on patients of all ages with AD requiring systemic therapy with conventional or novel drugs. We analyzed the registry to describe patient characteristics, diagnoses, treatments, and adverse events (AEs). RESULTS: We studied data entries for 258 patients who had received 347 systemic treatments for AD. Treatment was discontinued in 29.4% of cases, mostly due to a lack of effectiveness (in 10.7% of cases). A total of 132 AEs were described during follow-up. Eighty-six AEs (65%) were linked to a systemic treatment, most commonly dupilumab (39AEs) and cyclosporine (38AEs). The most common AEs were conjunctivitis (11patients), headache (6), hypertrichosis (5), and nausea (4). There was 1severe AE (acute mastoiditis) associated with cyclosporine. CONCLUSIONS: Initial findings on AEs from the Spanish BIOBADATOP registry are limited by short follow-up times precluding comparisons or calculation of crude and adjusted incidence rates. At the time of our analysis, no severe AEs had been reported for novel systemic therapies. BIOBADATOP will help answer questions on the effectiveness and safety of conventional and novel systemic therapies in AD.


Assuntos
Dermatite Atópica , Humanos , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/epidemiologia , Estudos Prospectivos , Ciclosporina/uso terapêutico , Administração Cutânea , Sistema de Registros , Resultado do Tratamento , Índice de Gravidade de Doença
8.
Sci Rep ; 13(1): 2143, 2023 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-36750633

RESUMO

Cultural heritage has become a keystone for comprehending our society, as it represents and reflects our origins, passions, beliefs and traditions. Furthermore, it provides fundamental information about specific temporary spaces, materials' availability, technology, artist's intention, and site weather conditions. Our aim was to develop a multidisciplinary approach with a main focus on investigating two Italian large-format paintings located in highly diverse environments such as the National Theater of Costa Rica. We monitored environmental conditions and quantified fungal aerial spores. Then, we determined regions of possible biodeterioration with the software MicroorganismPattern and used the software PigmentArrangement to elucidate the apparent colour of the paintings based on distribution and arrangement of the pigment crystals. Finally, we characterized eight genera of calcareous nannofossils found in the ground layers of the artwork. The former Men's Canteen at the National Theater of Costa Rica presented a mean air temperature of 23.5 [Formula: see text]C, a relative humidity of 72.7% and a concentration of CO[Formula: see text] of 570 ppm. The fungal aerial concentration was 1776 spores/m[Formula: see text]. The software MicroorganismPattern identified 32 sampling regions, out of which 11 were positive for microbial contamination. The software PigmentArrangement determined that the blue crystals (ultramarine pigment) had the shortest distances between themselves (29 [Formula: see text]m). Finally, the nanofossils identified enabled us to restrict the age of the material to a biostratigraphic interval ranging from Coniacian to Maastricthian ages. By using a multidisciplinary approach we were able to explore the diptych, suggest a set of minimally invasive perspectives in tropical environments to be used worldwide and obtain key information about the artist's artistic process, materials used along with better understand its state of conservation.

9.
Biomed Pharmacother ; 158: 114070, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36526536

RESUMO

Stauprimide, a semi-synthetic derivative of staurosporine, is known mainly for its potent differentiation-enhancing properties in embryonic stem cells. Here, we studied the effects of stauprimide in cell growth and migration of triple-negative breast cancer cells in vitro, evaluating its potential antitumoral activity in an orthotopic mouse model of breast cancer in vivo. Our results from survival curves, EdU incorporation, cell cycle analysis and annexin-V detection in MDA-MB-231 cells indicated that stauprimide inhibited cell proliferation, arresting cell cycle in G2/M without induction of apoptosis. A decrease in the migratory capability of MDA-MB-231 was also assessed in response to stauprimide. In this work we pointed to a mechanism of action of stauprimide involving the modulation of ERK1/2, Akt and p38 MAPK signalling pathways, and the downregulation of MYC in MDA-MB-231 cells. In addition, orthotopic MDA-MB-231 xenograft and 4T1 syngeneic models suggested an effect of stauprimide in vivo, increasing the necrotic core of tumors and reducing metastasis in lung and liver of mice. Together, our results point to the promising role of stauprimide as a putative therapeutic agent in triple-negative breast cancer.


Assuntos
Neoplasias da Mama , Neoplasias de Mama Triplo Negativas , Humanos , Animais , Camundongos , Feminino , Neoplasias de Mama Triplo Negativas/patologia , Linhagem Celular Tumoral , Ciclo Celular , Proliferação de Células , Neoplasias da Mama/tratamento farmacológico , Divisão Celular , Apoptose
10.
An. sist. sanit. Navar ; 44(3): 351-360, Dic 27, 2021. tab
Artigo em Espanhol | IBECS | ID: ibc-217308

RESUMO

Fundamento: Conocer el nivel de empoderamiento de laspersonas con insuficiencia cardiaca crónica hospitalizadas es crucial para identificar a las personas con un nivelde empoderamiento más bajo y fundamentar el diseño deestrategias efectivas para mejorar su control sobre lasdecisiones y acciones que afectan a su salud y bienestar.La falta de estudio de este fenómeno en esta poblacióny contexto, sugiere que estos pacientes no están siendoatendidos adecuadamente. Material y métodos: Estudio descriptivo, prospectivo. Seutilizó el Cuestionario de empoderamiento del pacientecon enfermedad crónica, traducido y validado al español,que consta de 47 ítems, agrupados en tres dimensiones:Actitud positiva y sentido del control, Toma de decisiones compartida e informada, y Búsqueda de informacióny compartir entre iguales. Fue distribuido para su cumplimentación en las 24 horas previas al alta hospitalaria.Resultados: Se recogieron 25 cuestionarios (81%). La puntuación global media de empoderamiento fue de 165,92 ±20,9. La dimensión Actitud positiva y sentido de controlfue la peor puntuada, con una media de 3,4 ± 0,5. Se encontró una relación inversa y débil entre el nivel de em-poderamiento y la edad (rho = -0,240; p = 0,000) y una relación débil y positiva con la supervivencia a los 10 años(rho = 0,316; p = 0,01).Conclusión: El nivel de empoderamiento de los pacientesde este estudio fue medio-alto. Las estrategias para abordar la atención de esta población deberían centrarse entrabajar su actitud respecto a la enfermedad y percepciónde control de la situación e individualizarse conforme ala edad.(AU)


Background: Establishing the level of chronic cardiac inpatient empowerment is essential. By doing so, it is possible to identify groups with a lower level. It also providesa basis for designing effective strategies to improve theircontrol over decision making and the actions that affecttheir health and wellness. The shortage of studies of thisphenomenon for this particular population and contextsuggests that such patients are not receiving proper care. Methods: A prospective and descriptive study was carried out. A validated Spanish version of the Patient empowerment in long-term conditions scale was used. Thesurvey has 47 items, grouped into three dimensions: Positive attitude and feeling of control, Knowledge in shareddecision making, and Seeking information and sharingwith other patients. It was distributed 24 hours beforehospital discharge. Results: Twenty five questionnaires were collected (81%).The mean global empowerment score of the patients was165.92 ± 20.9. The dimension Positive attitude and senseof control showed the lowest score, with a mean of 3.4± 0.5. An inverse weak relationship was found betweenthe level of empowerment and age (rho = -0.240; p = 0.000)while a positive one was found with 10-year survival(rho = 0,316; p = 0.01). Conclusion: The level of empowerment of the patients inthis study was medium-high. The strategies used to address the care of this population should focus on workingon their attitude towards the disease and perceived control of the situation, and should be individualized according to age.(AU)


Assuntos
Humanos , Masculino , Feminino , Idoso , Idoso de 80 Anos ou mais , 57923 , Insuficiência Cardíaca , Hospitalização , Participação do Paciente , Qualidade de Vida , Epidemiologia Descritiva , Estudos Prospectivos , Inquéritos e Questionários
11.
An Sist Sanit Navar ; 44(3): 351-360, 2021 Dec 27.
Artigo em Espanhol | MEDLINE | ID: mdl-34142990

RESUMO

BACKGROUND: Establishing the level of chronic cardiac inpatient empowerment is essential. By doing so, it is possible to identify groups with a lower level. It also provides a basis for designing effective strategies to improve their control over decision making and the actions that affect their health and wellness. The shortage of studies of this phenomenon for this particular population and context suggests that such patients are not receiving proper care. METHODS: A prospective and descriptive study was carried out. A validated Spanish version of the Patient empowerment in long-term conditions scale was used. The survey has 47 items, grouped into three dimensions: Positive attitude and feeling of control, Knowledge in shared decision making, and Seeking information and sharing with other patients. It was distrib-uted 24 hours before hospital discharge. RESULTS: Twenty five questionnaires were collected (81%). The mean global empowerment score of the patients was 165.92 ± 20.9. The dimension Positive attitude and sense of control showed the lowest score, with a mean of 3.4 ± 0.5. An inverse weak relationship was found between the level of empowerment and age (rho = -0.240; p = 0.000) while a positive one was found with 10-year survival (rho = 0,316; p = 0.01). CONCLUSION: The level of empowerment of the patients in this study was medium-high. The strategies used to address the care of this population should focus on working on their attitude towards the disease and perceived control of the situation, and should be individualized according to age.


Assuntos
Insuficiência Cardíaca , Participação do Paciente , Doença Crônica , Insuficiência Cardíaca/terapia , Humanos , Estudos Prospectivos , Inquéritos e Questionários
12.
Soft Matter ; 17(24): 6006-6019, 2021 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-34059862

RESUMO

This study presents an analysis of the dynamics of single and multiple chains of spherical super-paramagnetic beads suspended in a Newtonian fluid under the combined effect of an external rotating magnetic field and a shear flow. Viscosity results depend on two main non-dimensional numbers: the ratio between the shear rate and the magnetic rotation frequency and the ratio between the hydrodynamic and magnetostatic interactions (the Mason number). When the shear rate is smaller than the magnetic field frequency, the chain rotation accelerates the surrounding fluid, reducing the value of the measured suspension viscosity even below that of the solvent. In this regime, shear-thickening is observed. For values of the shear rates comparable to the rotation magnetic frequency, the viscosity reaches a maximum and non-linear coupling effects come up. If the shear rate is increased to values above the rotation frequency, the viscosity decreases and a mild shear-thinning is observed. In terms of the Mason number, the suspension viscosity reduces in line with the literature results reported for fixed magnetic fields, whereas the shear-rate/magnetic-frequency ratio parameters induce a shift of the viscosity curve towards larger values. Results at larger concentrations and multiple chains amplify the observed effects.

13.
J Chem Phys ; 152(7): 074704, 2020 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-32087633

RESUMO

The growth of mixed cobalt-iron oxides on Ru(0001) by high-temperature oxygen-assisted molecular beam epitaxy has been monitored in real time and real space by x-ray absorption photoemission microscopy. The initial composition is a mixed Fe-Co(II) oxide wetting layer, reflecting the ratio of the deposited materials. However, as subsequent growth of three dimensional spinel islands nucleating on this wetting layer takes place, the composition of the oxide in the wetting layer changes as iron is transferred into the spinel islands. The composition of the islands themselves also changes during growth.

14.
Sci Rep ; 9(1): 11777, 2019 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-31409875

RESUMO

Platelets of strontium hexaferrite (SrFe12O19, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-ray absorption based-measurements including spectroscopy and microscopy on the iron-L edges and the oxygen-K edge, allowing us to establish the differences and similarities between our synthesized nanostructures and commercial powders. The Mössbauer spectra reveal a greater contribution of iron tetrahedral sites in platelets in comparison to pure bulk material. For reference, high-resolution absorption and dichroic spectra have also been measured both from the platelets and from pure bulk material. The O-K edge has been reproduced by density functional theory calculations. Out-of-plane domains were observed with 180° domain walls less than 20 nm width, in good agreement with micromagnetic simulations.

15.
Harmful Algae ; 81: 77-85, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30638501

RESUMO

The ability of cyanobacteria to produce toxins and other secondary metabolites is patchily distributed in natural populations, enabling the use of cellular oligopeptide compositions as markers to classify strains into ecologically-relevant chemotypical subpopulations. The composition and spatiotemporal distribution of Microcystis chemotypes within and among waterbodies was studied at different time scales by analyzing (i) Microcystis strains isolated between 1998 and 2007 from different Spanish reservoirs and (ii) individual Microcystis aeruginosa colonies collected from pelagic and littoral habitats in Valmayor reservoir (Spain) during a bloom. No agreement between chemotypes and both morphotypes and genotypes (based on cpcBA-IGS, 16S-23S rRNA ITS and mcyB genes) was found, suggesting that oligopeptide profiles in individual strains evolve independently across morphospecies and phylogenetic genotypes, and that the diversity of microcystin variants produced cannot be explained by mcyB gene variations alone. The presence of identical chemotypes in spatially-distant reservoirs with dissimilar trophic state, lithology or depth indicate that waterbody characteristics and geographical boundaries weakly affect chemotype composition and distribution. At smaller spatiotemporal scales (i.e. during bloom), M. aeruginosa populations showed high number of chemotypes, as well as marked differences in chemotype composition and relative abundance among the littoral and pelagic habitats. This indicates that the factors influencing chemotype composition, relative abundance and dynamics operate at short spatial and temporal scales, and supports emerging hypotheses about interactions with antagonistic microorganisms as possible drivers for widespread chemical polymorphisms in cyanobacteria.


Assuntos
Microcystis , Variação Genética , Oligopeptídeos , Filogenia , Espanha , Inquéritos e Questionários
16.
Comput Biol Med ; 104: 319-328, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30558815

RESUMO

Atrial Flutter (AFL) termination by ablating the path responsible for the arrhythmia maintenance is an extended practice. However, the difficulty associated with the identification of the circuit in the case of atypical AFL motivates the development of diagnostic techniques. We propose body surface phase map analysis as a noninvasive tool to identify AFL circuits. Sixty seven lead body surface recordings were acquired in 9 patients during AFL (i.e. 3 typical, 6 atypical). Computed body surface phase maps from simulations of 5 reentrant behaviors in a realistic atrial structure were also used. Surface representation of the macro-reentrant activity was analyzed by tracking the singularity points (SPs) in surface phase maps obtained from band-pass filtered body surface potential maps. Spatial distribution of SPs showed significant differences between typical and atypical AFL. Whereas for typical AFL patients 70.78 ±â€¯16.17% of the maps presented two SPs simultaneously in the areas defined around the midaxialliary lines, this condition was only satisfied in 5.15 ±â€¯10.99% (p < 0.05) maps corresponding to atypical AFL patients. Simulations confirmed these results. Surface phase maps highlights the reentrant mechanism maintaining the arrhythmia and appear as a promising tool for the noninvasive characterization of the circuit maintaining AFL. The potential of the technique as a diagnosis tool needs to be evaluated in larger populations and, if it is confirmed, may help in planning ablation procedures.


Assuntos
Flutter Atrial/fisiopatologia , Mapeamento Potencial de Superfície Corporal , Modelos Cardiovasculares , Feminino , Átrios do Coração/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade
17.
Actas dermo-sifiliogr. (Ed. impr.) ; 109(8): 733-740, oct. 2018. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-175705

RESUMO

ANTECEDENTES Y OBJETIVOS: El impacto negativo que la psoriasis tiene en la calidad de vida del paciente puede ser tan importante como sus consecuencias físicas. Podríamos suponer que el blanqueamiento de la enfermedad conllevaría también una mejoría de su impacto psicosocial. El presente estudio valora el estado psicológico de los pacientes con psoriasis controlados con tratamiento sistémico en una Unidad de Psoriasis, especialmente en aquellos con una afectación leve o nula de la enfermedad. MÉTODOS: Estudio epidemiológico observacional y trasversal, sin intervención, con dos cohortes (casos y controles). Los pacientes autocompletaron datos demográficos y 4 cuestionarios (Cuestionario de autoestima de Rosenberg, Skindex-29, HADS y COPE-28) en una única visita. RESULTADOS: Se reclutaron 111 pacientes diagnosticados de psoriasis y 109 pacientes control. En autoestima, el promedio y la desviación estándar (DE) del grupo de psoriasis fue de 33,5 (4,8) y de 33,3 (6,7) para el grupo control, sin diferencias significativas. En el Skindex-29, la puntuación media del grupo de pacientes con psoriasis fue casi 3 veces mayor que la media del grupo control (30 vs. 11). Se encontraron diferencias significativas en las puntuaciones del HADS de ambos grupos (12,7 vs. 9,0; p < 0,001). Las puntuaciones promedio del HADS-A fueron de 8,0 (4,78) en el grupo de psoriasis frente a 5,7 (3,8) en el grupo control (p < 0,001), mientras que las del HADS-D fueron de 4,7 (3,9) frente a 3,2 (3,1) (p < 0,004), respectivamente. CONCLUSIONES: Los resultados obtenidos indican que es necesario medir el estado psicológico de nuestros pacientes con psoriasis, pues incluso con un control casi total de la enfermedad la afectación psicológica permanece


BACKGROUND AND OBJECTIVES: The negative impact of psoriasis on patient quality of life can be as important as the physical consequences of the disease. We could assume that clearance of the disease would also lead to an improvement in its psychosocial impact. The present study assesses the psychological state of patients with psoriasis receiving systemic treatment in a psoriasis unit, especially those with mild or no disease involvement. METHODS: We performed a cross-sectional, observational, noninterventional epidemiological study of 2 cohorts (cases and controls). The patients self-completed demographic data and 4 questionnaires (Rosenberg Self-Esteem Scale, Skindex-29, HADS, and COPE-28 questionnaire) at a single visit. RESULTS: We recruited 111 patients diagnosed with psoriasis and 109 control patients. In self-esteem, the mean and standard deviation (SD) score was 33.5 (4.8) for the psoriasis group and 33.3 (6.7) for the control group, with no significant differences. In the Skindex-29, the mean score for the psoriasis group was almost 3 times higher than that of the control group (30 vs. 11). Significant differences were found in the HADS scores of both groups (12.7 vs. 9.0, P<.001). The mean HADS-A scores were 8.0 (4.78) for the psoriasis group compared with 5.7 (3.8) for the control group (P<.001). In the case of HADS-D, the scores were 4.7 (3.9) compared with 3.2 (3.1) (P<.004), respectively. CONCLUSIONS: Our findings indicate that it is necessary to assess the psychological state of patients with psoriasis, because psychological effects persist even in cases where the disease is almost totally controlled


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Psoríase/tratamento farmacológico , Psoríase/psicologia , Autoimagem , Perfil de Impacto da Doença , Qualidade de Vida , Psoríase/epidemiologia , Estudos Transversais , Estudo Observacional , Inquéritos e Questionários , 28599 , Adaptação Psicológica
18.
Actas dermo-sifiliogr. (Ed. impr.) ; 109(7): 617-623, sept. 2018. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-175643

RESUMO

INTRODUCCIÓN Y OBJETIVOS: La utilización clínica habitual de los fármacos biológicos en el tratamiento de la psoriasis es en segunda línea, es decir, tras el uso previo de un fármaco clásico. Sin embargo, en casos particulares -particularidades del paciente o criterio médico- se realiza la indicación en primera línea. No existen estudios sobre las características demográficas, clínicas y de seguridad de los pacientes que reciben fármaco biológico en primera línea. Como objetivo primario se pretende determinar dichas características de acuerdo con la iniciación de la terapia biológica en primera o segunda línea. MATERIAL Y MÉTODO: Se realizó un estudio descriptivo, multicéntrico, de 181 pacientes que iniciaron tratamiento biológico como primer fármaco sistémico para control de su psoriasis moderada-grave, y que forman parte del Registro Español de Acontecimientos Adversos Asociados con Medicamentos Biológicos en Dermatología, entre enero de 2008 y noviembre de 2016. RESULTADOS: Los pacientes de ambos grupos son muy similares, si bien se evidencia que el grupo que recibe el biológico en primera línea presenta una edad más avanzada, sin que se justifique por gravedad de la enfermedad (PASI) ni por el tiempo de evolución de esta desde el diagnóstico. En este grupo de pacientes es más frecuente la presencia de hipertensión, diabetes y hepatopatía. No hemos encontrado diferencias en motivos de suspensión ni seguridad entre ambos grupos. CONCLUSIONES: No se han encontrado diferencias relevantes entre los 2 grupos, lo cual refuerza la seguridad de los fármacos biológicos en este contexto


INTRODUCTION AND OBJECTIVES: Biologic drugs are usually prescribed as second-line treatment for psoriasis, that is, after the patient has first been treated with a conventional psoriasis drug. There are, however, cases where, depending on the characteristics of the patient or the judgement of the physician, biologics may be chosen as first-line therapy. No studies to date have analyzed the demographics or clinical characteristics of patients in this setting or the safety profile of the agents used. The main aim of this study was to characterize these aspects of first-line biologic therapy and compare them to those observed for patients receiving biologics as second-line therapy. MATERIAL AND METHOD: We conducted an observational study of 181 patients treated in various centers with a systemic biologic drug as first-line treatment for moderate to severe psoriasis between January 2008 and November 2016. All the patients were registered in the Spanish Registry of Adverse Events Associated with Biologic Drugs in Dermatology. RESULTS: The characteristics of the first- and second-line groups were very similar, although the patients receiving a biologic as first-line treatment for their psoriasis were older. No differences were observed for disease severity (assessed using the PASI) or time to diagnosis. Hypertension, diabetes, and liver disease were all more common in the first-line group. There were no differences between the groups in terms of reasons for drug withdrawal or occurrence of adverse effects. CONCLUSIONS: No major differences were found between patients with psoriasis receiving biologic drugs as first- or second-line therapy, a finding that provides further evidence of the safety of biologic therapy in patients with psoriasis


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Produtos Biológicos/uso terapêutico , Imunossupressores/uso terapêutico , Psoríase/tratamento farmacológico , Sistema de Registros , Anticorpos Monoclonais/uso terapêutico , Distribuição por Idade , Anticorpos Monoclonais/efeitos adversos , Produtos Biológicos/efeitos adversos , Comorbidade , Substituição de Medicamentos , Uso de Medicamentos , Imunossupressores/efeitos adversos , Psoríase/epidemiologia , Espanha/epidemiologia , Fator de Necrose Tumoral alfa/antagonistas & inibidores
19.
Actas Dermosifiliogr (Engl Ed) ; 109(8): 733-740, 2018 Oct.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-29970225

RESUMO

BACKGROUND AND OBJECTIVES: The negative impact of psoriasis on patient quality of life can be as important as the physical consequences of the disease. We could assume that clearance of the disease would also lead to an improvement in its psychosocial impact. The present study assesses the psychological state of patients with psoriasis receiving systemic treatment in a psoriasis unit, especially those with mild or no disease involvement. METHODS: We performed a cross-sectional, observational, noninterventional epidemiological study of 2 cohorts (cases and controls). The patients self-completed demographic data and 4 questionnaires (Rosenberg Self-Esteem Scale, Skindex-29, HADS, and COPE-28 questionnaire) at a single visit. RESULTS: We recruited 111 patients diagnosed with psoriasis and 109 control patients. In self-esteem, the mean and standard deviation (SD) score was 33.5 (4.8) for the psoriasis group and 33.3 (6.7) for the control group, with no significant differences. In the Skindex-29, the mean score for the psoriasis group was almost 3 times higher than that of the control group (30 vs. 11). Significant differences were found in the HADS scores of both groups (12.7 vs. 9.0, P<.001). The mean HADS-A scores were 8.0 (4.78) for the psoriasis group compared with 5.7 (3.8) for the control group (P<.001). In the case of HADS-D, the scores were 4.7 (3.9) compared with 3.2 (3.1) (P<.004), respectively. CONCLUSIONS: Our findings indicate that it is necessary to assess the psychological state of patients with psoriasis, because psychological effects persist even in cases where the disease is almost totally controlled.


Assuntos
Psoríase/psicologia , Adaptação Psicológica , Adulto , Ansiedade/etiologia , Estudos Transversais , Depressão/etiologia , Emoções , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psoríase/tratamento farmacológico , Qualidade de Vida , Autoimagem , Índice de Gravidade de Doença , Fatores Socioeconômicos , Inquéritos e Questionários
20.
Actas Dermosifiliogr (Engl Ed) ; 109(7): 617-623, 2018 Sep.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-29887167

RESUMO

INTRODUCTION AND OBJECTIVES: Biologic drugs are usually prescribed as second-line treatment for psoriasis, that is, after the patient has first been treated with a conventional psoriasis drug. There are, however, cases where, depending on the characteristics of the patient or the judgement of the physician, biologics may be chosen as first-line therapy. No studies to date have analyzed the demographics or clinical characteristics of patients in this setting or the safety profile of the agents used. The main aim of this study was to characterize these aspects of first-line biologic therapy and compare them to those observed for patients receiving biologics as second-line therapy. MATERIAL AND METHOD: We conducted an observational study of 181 patients treated in various centers with a systemic biologic drug as first-line treatment for moderate to severe psoriasis between January 2008 and November 2016. All the patients were registered in the Spanish Registry of Adverse Events Associated with Biologic Drugs in Dermatology. RESULTS: The characteristics of the first- and second-line groups were very similar, although the patients receiving a biologic as first-line treatment for their psoriasis were older. No differences were observed for disease severity (assessed using the PASI) or time to diagnosis. Hypertension, diabetes, and liver disease were all more common in the first-line group. There were no differences between the groups in terms of reasons for drug withdrawal or occurrence of adverse effects. CONCLUSIONS: No major differences were found between patients with psoriasis receiving biologic drugs as first- or second-line therapy, a finding that provides further evidence of the safety of biologic therapy in patients with psoriasis.


Assuntos
Produtos Biológicos/uso terapêutico , Imunossupressores/uso terapêutico , Psoríase/tratamento farmacológico , Sistema de Registros , Adulto , Distribuição por Idade , Idoso , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais/uso terapêutico , Produtos Biológicos/efeitos adversos , Comorbidade , Substituição de Medicamentos , Uso de Medicamentos , Feminino , Humanos , Imunossupressores/efeitos adversos , Masculino , Pessoa de Meia-Idade , Psoríase/epidemiologia , Espanha/epidemiologia , Fator de Necrose Tumoral alfa/antagonistas & inibidores
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