1,266 research outputs found
El uso de información visual en el dibujo de imaginación
Entre los siglo XV y XVIII, contemporáneamente al estudio sistemático de la naturaleza y al interés por el dibujo con modelo del natural, tiene lugar una intensa búsqueda plástica de la movilidad de la figura humana ingrávida, cuyo movimiento no pertenece a la realidad visible. Ante la abundancia de figuras de este tipo y la diversidad de soluciones plásticas, nos preguntamos a cerca del hecho artístico que permite su expresión móvil. Para ello analizamos las diferencias entre el movimiento ligado a la gravedad y el movimiento inventado de los personajes flotantes; y estudiamos el uso de información visual y la imaginación en el proceso de expresión plástica del movimiento, buscando los referentes que nutren la experiencia visual del creador y su transformación por medio de la imaginación creadora.Peris Medina, MC.; Lloret Ferrándiz, MC.; Peris Medina, RG. (2012). El uso de información visual en el dibujo de imaginación. Artigrama. (26):469-483. http://hdl.handle.net/10251/33720S4694832
Emoción y desarrollo evolutivo: Infancia, adolescencia y vejez
As old as the existence of living beings are the adaptive mechanisms which served to
evolve and survive. With the appearance of the reptilian brain, the first emotions arise
and since then, the emotional processes have been linked to brain development, increasing
in degree and sophistication as species evolve. The maximal expression of
emotional development can be found in humans, in which emotions have been considered
as central in the growth process. In fact, the balance and the maturation of the
connections between the prefrontal cortex and the limbic system determine the emotional
experiences in the different stages of life.
Taking healthy adult population (without pathologies) as group of comparison, our goal
was to perform a literature review of recent experimental research to illustrate the existence
of differences and/or similarities in both the expression and emotional experiences
in the main evolutionary stages in human beings: childhood, adolescence and old
age. In general, the analysis of the experimental literature shows a predisposition to
negative emotions in the first months of life and a trend towards positive emotional
experiences in old age. On the other hand, adolescence is a period characterized by a
great emotional distress. Finally, this essay explores the relationship of the experience
and the emotional expression of these stages with the maturation process of the central
nervous system.Tan antiguos como la existencia de los seres vivos son los mecanismos de adaptación
que les han servido para evolucionar y sobrevivir. Con la aparición del cerebro reptiliano
surgieron las primeras emociones y, desde entonces, los procesos emocionales
han estado ligados al desarrollo cerebral, aumentando en grado y sofisticación según
evolucionaban las especies. La máxima expresión del desarrollo emocional la podemos
encontrar en el ser humano, en el que se ha demostrado cómo las emociones son
fundamentales en su proceso de crecimiento. De hecho, el equilibrio y la maduración
de las conexiones entre el córtex prefrontal y el sistema límbico condicionan la vivencia
emocional en las distintas etapas de la vida de las personas.
Tomando como «grupo control» la población adulta (con ausencia de patologías),
nuestro objetivo es realizar una revisión bibliográfica de trabajos experimentales recientes
para ilustrar la existencia de diferencias y/o semejanzas en la expresión y la
experiencia emocional en las principales etapas evolutivas del ser humano: infancia,
adolescencia y vejez. En general, la mayoría de trabajos experimentales analizados
indican una predisposición a experimentar emociones negativas en los primeros
meses de vida y una tendencia hacia las experiencias emocionales positivas en la
vejez. Por otro lado, la adolescencia se caracteriza, fundamentalmente, por ser una
etapa de gran desequilibrio emocional. Finalmente, en el presente trabajo se estudiará
la relación de la experiencia y la expresión emocional propias de estas etapas con el
proceso de maduración del sistema nervioso central
DNA sequences within glioma-derived extracellular vesicles can cross the intact blood-brain barrier and be detected in peripheral blood of patients
Tumor-cell-secreted extracellular vesicles (EVs) can cross the disrupted bloodbrain
barrier (BBB) into the bloodstream. However, in certain gliomas, the BBB
remains intact, which might limit EVs release. To evaluate the ability of tumor-derived
EVs to cross the BBB, we used an orthotopic xenotransplant mouse model of human
glioma-cancer stem cells featuring an intact BBB. We demonstrated that all types of
tumor cells-derived EVs−apoptotic bodies, shedding microvesicles and exosomes−
cross the intact BBB and can be detected in the peripheral blood, which provides a
minimally invasive method for their detection compared to liquid biopsies obtained
from cerebrospinal fluid (CSF). Furthermore, these EVs can be readily distinguished
from total murine EVs, since they carry human-specific DNA sequences relevant
for GBM biology. In a small cohort of glioma patients, we finally demonstrated
that peripheral blood EVs cargo can be successfully used to detect the presence of
IDH1G395A, an essential biomarker in the current management of human gliomaWe are grateful for the financial support from the ‘Fondo de Investigaciones Sanitarias’ (FIS) (PI10/01069 and PI14/00077) and the ‘Miguel Servet Program’ (CP11/00147) from the ‘Instituto de Salud Carlos III’ (AAS), RTC-2015-3846-1 from Ministerio de Economía
y Competitividad and FEDER fund
Home parenteral nutrition (HPN) registry in spain for the years 2007, 2008 and 2009 (Nadya-SENPE group)
Objetivo: Comunicar los datos del registro de Nutrición
Parenteral Domiciliaria (NPD) del grupo de trabajo
NADYA-SENPE de los años 2007, 2008 y 2009.
Material y métodos: Recopilación de los datos del registro
“on-line” introducidos por las Unidades responsables
del seguimiento de la NPD desde el 1 de enero de 2007 al 31
de diciembre de 2009 dividido por años naturales.
Resultados: Año 2007: Se registraron 133 pacientes
con NPD (61 hombres y 72 mujeres), de 21 hospitales. La
edad media de los 119 pacientes mayores de 13 años fue de
53,7 ± 14,9 años, y de 3,6 ± 3,6 años la de los 14 pacientes
que no los superaban. La patología más frecuente fue la
neoplasia (24%) seguida de las alteraciones de la motilidad
intestinal y la enteritis posradiación (ambas 14%).
En el 43% de los casos el motivo de indicación fue el síndrome
de intestino corto, seguido de malabsorción (27%)
y obstrucción intestinal (23%). Los catéteres más utilizados
fueron los tunelizados (69%) y los reservorios subcutáneos
(27%). Las complicaciones mas frecuentes fueron
las sépticas relacionadas con el catéter con una tasa de
0,92 infecciones por cada mil días de NPD. La duración de
la NPD fue superior a los dos años en el 50% de los casos.
Al acabar el año seguía en activo el 71,4% de los pacientes;
la muerte fue la principal causa de la finalización de
la NPD (57,5%). El 26% de los pacientes se consideraron
candidatos al trasplante intestinal.
Año 2008: Se registraron 143 pacientes con NPD (62
hombres y 81mujeres), de 24 hospitales. La edad media
de los 133 pacientes mayores de 13 años fue de 54,7 ± 13,9
años, y de 3,7 ± 0,6 años la de los 10 pacientes que no los
superaban. La patología más frecuente fue la neoplasia
(20%) seguida de la enteritis rádica (14%) y las alteraciones
de la motilidad intestinal (13%). En el 44% de los
casos el motivo de indicación fue el síndrome de intestino
corto, seguido de malabsorción (28%) y obstrucción
Nutriintestinal
(20%). Los catéteres más utilizados fueron los
tunelizados (60%) y los reservorios subcutáneos (29%).
Las complicaciones mas frecuentes fueron las sépticas
relacionadas con el catéter con una tasa de 0,50 infecciones
por cada mil días de NPD. La duración de la NPD fue
superior a los dos años en el 67% de los casos. Al acabar el
año seguía en activo el 71,6% de los pacientes; la muerte
fue la principal causa de la finalización de la NPD
(52,4%). El 29% de los pacientes se consideraron candidatos
al trasplante intestinal.
Año 2009: Se registraron 158 pacientes con NPD (62
hombres y 96 mujeres), de 24 hospitales. La edad media
de los 149 pacientes mayores de 13 años fue de 55,2 ± 13,0
años. La patología más frecuente fue la neoplasia (25%)
seguida de la enteritis rádica (12%) y las alteraciones de
la motilidad intestinal (11%). En el 42% de los casos el
motivo de indicación fue el síndrome de intestino corto,
seguido de malabsorción y obstrucción intestinal (ambas
23%). Los catéteres más utilizados fueron los tunelizados
(60%) y los reservorios subcutáneos (36%). Las complicaciones
mas frecuentes fueron las sépticas relacionadas
con el catéter con una tasa de 0,67 infecciones por cada
mil días de NPD. La duración de la NPD fue superior a los
dos años en el 58% de los casos. Al acabar el año seguía en
activo el 79,2% de los pacientes; el paso a alimentación
oral fue la principal causa de la finalización de la NPD
(48%). El 23% de los pacientes se consideraron candidatos
a trasplante intestinal.
Conclusiones: Se observa un aumento progresivo de
los pacientes registrados respecto a años anteriores con
una prevalencia muy variable según comunidades autónomas.
La principal patología sigue siendo la neoplasia,
que ocupa el primer lugar desde 2003. Se aprecia una disminución
de las complicaciones sépticas relacionadas con
el catéter en los dos últimos años, siendo la tasa de 2008 la
más baja desde la creación del registroObjective: To report the data of the Home Parenteral
Nutrition (HPN) registry of the NADYA-SENPE working
group for the years 2007, 2008 and 2009.
Methodology: We compiled the data from the on-line
registry introduced by the responsible Units for the monitoring
of HPN from January 1st 2007 to December 31st
2009. Included fields were: age, sex, diagnosis and reason
for HPN, access path, complications, beginning and end
dates, complementary oral or enteral nutrition, activity
level, autonomy degree, product and fungible material
supply, withdrawal reason and intestinal transplant indication.
Results: 2007: 133 patients with HPN were registered
(61 males and 72 females), belonging to 21 hospitals.
Average age for the 119 patients older than 13 years old
was 53.7 ± 14.9 years, and 3.6 ± 3.6 y. for the 14 patients
under 14 years old. Most frequent pathology was neoplasm
(24%), followed by intestinal motility disorders
and actinic enteritis (14% both). The reason for HPN provision
was short bowel syndrome (43%), malabsorption
(27%), and intestinal obstruction (23%). Tunnelled
catheters were mostly used (69%), followed by implanted
port-catheters (27%). Catheter related infections were
the most frequent complications, with a rate of 0.92
episodes/103 HPN days. HPN was provided for more than
two years in 50% of the cases. By the end of 2007, 71.4%
of the patients remained active; exitus was the most frequent
reason to end HPN (57.5%). 26% of the patients
were eligible for intestinal transplant.
2008: 143 patients with HPN were registered (62 males
and 81 females), belonging to 24 hospitals. Average age
for the 133 patients older than 13 years old was 54.7 ± 13.9
years, and 3.7 ± 0.6 y. for the 10 patients under 14 years
old. Most frequent pathology was neoplasm (20%), followed
by actinic enteritis (14%) and intestinal motility
disorders (13% ). The reason for HPN provision was
short bowel syndrome (44%), malabsorption (28%), and
intestinal obstruction (20%). Tunnelled catheters were
mostly used (60%), followed by implanted port-catheters
(29%). Catheter related infections were the most frequent
complications, with a rate of 0.50 episodes/103 HPN
days. HPN was provided for more than two years in 67%
of the cases. By the end of 2008, 71.6% of the patients
remained active; exitus was the most frequent reason to
end HPN (52.4%). 29% of the patients were eligible for
intestinal transplant.
2009: 158 patients with HPN were registered (62 males
and 96 females), belonging to 24 hospitals. Average age
for the 149 patients older than 13 years old was 55.2 ± 13.0
years. Most frequent pathology was neoplasm (25%), followed
by actinic enteritis (12%) and intestinal motility
disorders (11%). The reason for HPN provision was short
bowel syndrome (42%), malabsorption, and intestinal
obstruction (23% both). Tunnelled catheters were mostly
used (60%), followed by implanted port-catheters (36%).
Catheter related infections were the most frequent complications,
with a rate of 0.67 episodes/103 HPN days.
HPN was provided for more than two years in 58% of the
cases. By the end of 2009, 79.2% of the patients remained
active; full oral nutrition was the most frequent reason to
end HPN (48%). 23% of the patients were eligible for
intestinal transplant.
Conclusions: We observe an increase in registered
patients with respect to previous years, with a very different
prevalence among regions. Neoplasia remains as the
main pathology since 2003. We observe a decrease in
catheter-related infections in the last two years, being the
2008 rate the smallest since the register’s beginning
Colecciones ex situ de planta viva para la conservación de la planta amenazada Silene hifacensis, Rouy ex Willk (Caryophyllaceae)
The establishment of seed orchards has allowed obtaining a great deal of germoplasm of Silene hifacensis, an endangered endemic Ibero-Balearic species. In four years, 3.958.531 seeds have been collected in our four seed orchards from a total of 570 plants/year per average, including all genetic variability from natural populations of this species in Alicante province (Illot of Mona, the Pessebret, Cova de les Cendres, Morro de Toix)
Bevacizumab Diminishes Inflammation in an Acute Endotoxin-Induced Uveitis Model
Introduction: Uveitis is an eye disease characterized by inflammation of the uvea and an early and exhaustive diagnosis is essential for its treatment. The aim of our study is to assess the potential toxicity and anti-inflammatory efficacy of Bevacizumab in an experimental uveitis model by subcutaneously injecting lipopolysaccharide into Lewis rats and to clarify its mechanism.Material and Methods: Blood–aqueous barrier integrity was assessed 24 h after endotoxin-induced uveitis (EIU) by analyzing two parameters: cell count and protein concentration in aqueous humors. Histopathology of all eye structures was also studied. Enzyme-linked immunosorbent analyses of the aqueous humor samples were performed in order to calculate the diverse chemokine and cytokine protein levels and oxidative stress-related markers were also evaluated.Results: The aqueous humor’s cellular content significantly increased in the group treated with only Bevacizumab, but it had no effect on retina histopathological grading. Nevertheless, the inflammation noted in ocular structures when administering Bevacizumab with endotoxin was mostly prevented since aqueous humor cell content considerably lowered, and concomitantly with a sharp drop in uveal, vitreous, and retina histopathological grading. The values of the multi-faceted cytokine IL-2 also significantly decreased (p < 0.05 vs. endotoxin group), and the protective IL-6 and IL-10 cytokines values rose with related anti-oxidant system recovery (p < 0.05 vs. endotoxin group). Concurrently, some related M1 macrophage chemokines substantially increased, e.g., GRO/KC, a chemokine that also displays any kind of protective role.Conclusion: All these results revealed that 24 h after being administered, Bevacizumab treatment in EIU significantly prevented inflammation in various eye structures and correct results in efficacy vs. toxicity balance were obtained
Effectiveness of the 13-valent pneumococcal conjugate vaccine in preventing invasive pneumococcal disease in children aged 7-59 months. A matched case-control study
Background The 13-valent pneumococcal conjugate vaccine (PCV13) was licensed based on the results of immunogenicity studies and correlates of protection derived from randomized clinical trials of the 7-valent conjugate pneumococcal vaccine. We assessed the vaccination effectiveness (VE) of the PCV13 in preventing invasive pneumococcal disease (IPD) in children aged 7-59 months in a population with suboptimal vaccination coverage of 55%. Methods The study was carried out in children with IPD admitted to three hospitals in Barcelona (Spain) and controls matched by hospital, age, sex, date of hospitalization and underlying disease. Information on the vaccination status was obtained from written medical records. Conditional logistic regression was made to estimate the adjusted VE and 95% confidence intervals (CI). Results 169 cases and 645 controls were included. The overall VE of ≥1 doses of PCV13 in preventing IPD due to vaccine serotypes was 75.8% (95% CI, 54.1-87.2) and 90% (95% CI, 63.9-97.2) when ≥2 doses before 12 months, two doses on or after 12 months or one dose on or after 24 months, were administered. The VE of ≥1 doses was 89% (95% CI, 42.7-97.9) against serotype 1 and 86.0% (95% CI, 51.2-99.7) against serotype 19A. Serotype 3 showed a non-statistically significant effectiveness (25.9%; 95% CI, -65.3 to 66.8). Conclusions The effectiveness of ≥1 doses of PCV13 in preventing IPD caused by all PCV13 serotypes in children aged 7-59 months was good and, except for serotype 3, the effectiveness of ≥1 doses against the most frequent PCV13 serotypes causing IPD was high when considered individually
Serotypes and Clonal Composition of Streptococcus pneumoniae Isolates Causing IPD in Children and Adults in Catalonia before 2013 to 2015 and after 2017 to 2019 Systematic Introduction of PCV13
The goal of this study was to investigate the distribution of serotypes and clonal composition of Streptococcus pneumoniae isolates causing invasive pneumococcal disease (IPD) in Catalonia, before and after systematic introduction of PCV13. Pneumococcal strains isolated from normally sterile sites obtained from patients of all ages with IPD received between 2013 and 2019 from 25 health centers of Catalonia were included. Two study periods were defined: presystematic vaccination period (2013 and 2015) and systematic vaccination period (SVP) (2017 to 2019). A total of 2,303 isolates were analyzed. In the SVP, there was a significant decrease in the incidence of IPD cases in children 5 to 17 years old (relative risk [RR] 0.61; 95% confidence interval [CI] 0.38 to 0.99), while there was a significant increase in the incidence of IPD cases in 18- to 64-year-old adults (RR 1.33; 95% CI 1.16 to 1.52) and adults over 65 years old (RR 1.23; 95% CI 1.09 to 1.38). Serotype 8 was the major emerging serotype in all age groups except in 5- to 17-year-old children. In children younger than 5 years old, the main serotypes in SVP were 24F, 15A, and 3, while in adults older than 65 years they were serotypes 3, 8, and 12F. A significant decrease in the proportions of clonal complexes CC156, CC191, and ST306 and an increase in those of CC180, CC53, and CC404 were observed. A steady decrease in the incidence of IPD caused by PCV13 serotypes indicates the importance and impact of systematic vaccination. The increase of non-PCV13 serotypes highlights the need to expand serotype coverage in future vaccines and rethink vaccination programs for older adults. IMPORTANCE We found that with the incorporation of the PCV13 vaccine, the numbers of IPD cases caused by serotypes included in this vaccine decreased in all of the age groups. Still, there was an unforeseen increase of the serotypes not included in this vaccine causing IPD, especially in the >65-year-old group. Moreover, a significant increase of serotype 3 included in the vaccine has been observed; this event has been reported by other researchers. These facts call for the incorporation of more serotypes in future vaccines and a more thorough surveillance of the dynamics of this microorganism
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