245 research outputs found
Emotional intelligence and creativity in first- and second-year primary school children
The objective of this study was to describe emotional intelligence and creativity in Primary Education schoolchildren. These two constructs were evaluated in first- and second-year Primary Education schoolchildren who went to different schools in the Spanish Autonomous Community of Aragon. The study sample was formed by 631 schoolchildren (313 boys and 318 girls) aged 6-7 years. The results showed differences in emotional intelligence for gender, but the differences obtained for creativity were not significant. Finally, a cluster analysis was done to analyse how the different variables were grouped according to clusters, where differences were found for creativity levels, but not for emotional intelligence levels. This research indicated how emotional intelligence did not influence our pupils'' creativity as the cluster with the highest creativity level had the lowest level of elaboration (quantity of details in responses). This indicated that, despite being creative, these pupils were concise and pragmatic when responding. This situation should make schools reflect on what type of students we are training. As future research lines, work should be done with programmes that include creativity and emotional intelligence, and that investigate the way positive emotions and creativity can be combined
Long-term survival analysis of masitinib in amyotrophic lateral sclerosis
Background: A randomized, placebo-controlled phase III study (AB10015) previously demonstrated that orally administered masitinib (4.5 mg/kg/day) slowed rate of functional decline, with acceptable safety, in amyotrophic lateral sclerosis (ALS) patients having an ALS Functional Rating Scale-revised (ALSFRS-R) progression rate from disease onset to baseline of <1.1 points/month. Here we assess long-term overall survival (OS) data of all participants from study AB10015 and test whether a signal in OS is evident in an enriched patient population similar to that prospectively defined for confirmatory study AB19001. Methods: Survival status of all patients originally randomized in AB10015 was collected from participating investigational sites. Survival analysis (using the multivariate log-rank test and Cox proportional hazards model, with stratification factors as covariates) was performed on the intention-to-treat population and enriched subgroups, which were defined according to initial randomization, baseline ALSFRS-R progression rate and baseline disease severity. Results: A significant survival benefit of 25 months (p = 0.037) and 47% reduced risk of death (p = 0.025) was observed for patients receiving 4.5 mg/kg/day masitinib (n = 45) versus placebo (n = 62) in an enriched cohort with ⩾2 on each baseline ALSFRS-R individual component score (i.e. prior to any complete loss or severe impairment of functionality) and post-onset ALSFRS-R progression rate <1.1 (i.e. exclusion of very fast progressors) [median OS of 69 versus 44 months, respectively; hazard ratio, 0.53 [95% CI (0.31–0.92)]]. This corresponds to the population enrolled in confirmatory phase III study, AB19001. Conclusions: Analysis of long-term OS (75 months average follow-up from diagnosis) indicates that oral masitinib (4.5 mg/kg/day) could prolong survival by over 2 years as compared with placebo, provided that treatment starts prior to severe impairment of functionality.Fil: Mora, Jesus S.. No especifíca;Fil: Bradley, Walter G.. University of Miami; Estados UnidosFil: Chaverri, Delia. No especifíca;Fil: Hernández Barral, María. No especifíca;Fil: Mascias, Javier. No especifíca;Fil: Gamez, Josep. Universitat Autònoma de Barcelona; EspañaFil: Gargiulo Monachelli, Gisella Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Moussy, Alain. No especifíca;Fil: Mansfield, Colin D.. No especifíca;Fil: Hermine, Olivier. No especifíca;Fil: Ludolph, Albert C.. Universitat Ulm; Alemani
Delimitation of Neonectria and Cylindrocarpon (Nectriaceae, Hypocreales, Ascomycota) and related genera with Cylindrocarpon-like anamorphs
Neonectria is a cosmopolitan genus and it is, in part, defined by
its link to the anamorph genus Cylindrocarpon. Neonectria
has been divided into informal groups on the basis of combined morphology of
anamorph and teleomorph. Previously, Cylindrocarpon was divided into
four groups defined by presence or absence of microconidia and chlamydospores.
Molecular phylogenetic analyses have indicated that Neonectria
sensu stricto and Cylindrocarpon sensu stricto are
phylogenetically congeneric. In addition, morphological and molecular data
accumulated over several years have indicated that Neonectria sensu
lato and Cylindrocarpon sensu lato do not form a
monophyletic group and that the respective informal groups may represent
distinct genera. In the present work, a multilocus analysis (act,
ITS, LSU, rpb1, tef1, tub) was applied to representatives of
the informal groups to determine their level of phylogenetic support as a
first step towards taxonomic revision of Neonectria sensu
lato. Results show five distinct highly supported clades that correspond
to some extent with the informal Neonectria and
Cylindrocarpon groups that are here recognised as genera: (1) N.
coccinea-group and Cylindrocarpon groups 1 & 4
(Neonectria/Cylindrocarpon sensu stricto); (2) N.
rugulosa-group (Rugonectria gen. nov.); (3) N.
mammoidea/N. veuillotiana-groups and Cylindrocarpon group 2
(Thelonectria gen. nov.); (4) N. radicicola-group and
Cylindrocarpon group 3 (Ilyonectria gen. nov.); and (5)
anamorph genus Campylocarpon. Characteristics of the anamorphs and
teleomorphs correlate with the five genera, three of which are newly
described. New combinations are made for species where their classification is
confirmed by phylogenetic data
A metabolomic platform to identify and quantify polyphenols in coffee and related species using liquid chromatography mass spectrometry
IntroductionProducts of plant secondary metabolism, such as phenolic compounds, flavonoids, alkaloids, and hormones, play an important role in plant growth, development, stress resistance. The plant family Rubiaceae is extremely diverse and abundant in Central America and contains several economically important genera, e.g. Coffea and other medicinal plants. These are known for the production of bioactive polyphenols (e.g. caffeine and quinine), which have had major impacts on human society. The overall goal of this study was to develop a high-throughput workflow to identify and quantify plant polyphenols.MethodsFirst, a method was optimized to extract over 40 families of phytochemicals. Then, a high-throughput metabolomic platform has been developed to identify and quantify 184 polyphenols in 15 min.ResultsThe current metabolomics study of secondary metabolites was conducted on leaves from one commercial coffee variety and two wild species that also belong to the Rubiaceae family. Global profiling was performed using liquid chromatography high-resolution time-of-flight mass spectrometry. Features whose abundance was significantly different between coffee species were discriminated using statistical analysis and annotated using spectral databases. The identified features were validated by commercially available standards using our newly developed liquid chromatography tandem mass spectrometry method.DiscussionCaffeine, trigonelline and theobromine were highly abundant in coffee leaves, as expected. Interestingly, wild Rubiaceae leaves had a higher diversity of phytochemicals in comparison to commercial coffee: defense-related molecules, such as phenylpropanoids (e.g., cinnamic acid), the terpenoid gibberellic acid, and the monolignol sinapaldehyde were found more abundantly in wild Rubiaceae leaves
TICAREX: Exposiciones laborales a agentes cancerígenos y plaguicidas en Costa Rica
The European data system CAREX takes the workforce of a country grouped into 55 economic sectors according to the
International Economic Activity Classification (IEAC) of the United Nations, the second 1968 revision and through the
application of proportions of workers exposed to 139 carcinogenic agents based on data from industrial hygiene studies,
converting it into the total workforce exposed to carcinogens by sector. . In this article we describe a modification and
extension of of the CAREX system in order to calculate the number of workers exposed to carcinogens in Costa Rica. It is the first use of CAREX outside Europe (TICAREX) in Costa Rica, Central America, for 27carcinogens and 7 groups of
pesticides thought to be of interest for the country, with separate estimations for men and women. The most frequent
agents of exposure for the 1.3 million workers of Costa Rica were solar radiation (333,000 workers); diesel exhaust
(278,000); paraquat and diquat (175,000); environmental tobacco smoke (71,000); hexavalent chromium compounds
(55,000); benzene (52,000); mancozeb, maneb and zineb (49,000); chlorothalonil (38,000); wood dust (32,000); quartz
(27,000); benomyl (19,000); lead and its inorganic compounds (19,000); tetrachloroethylene (18,000); and polycyclic
aromatic hydrocarbons (17,000). Owing to the different occupational distribution between the genders, exposures to
formaldehyde, radon and methylene chloride were more frequent than pesticides, hexavalent chromium, wood dust, and
quartz in women. Agriculture, construction, personal and domestic services, manufacture of wood products, mining,
forestry, fishing, manufacture of electrical products, and bars and restaurants were sectors with frequent exposures.
Substantial reduction of occupational and environmental exposures to these agents would significantly improve public and
occupational health. Reduction of occupational exposures is usually also followed by improvement of environmental
quality. Monitoring of exposures and health of workers and the general public is an essential element in the control of
environmental contamination and human exposures.El sistema europeo de datos CAREX ( CARcinogen Exposure ) considera la fuerza laboral de un país agrupada en 55
sectores económicos según la Clasificación Internacional de Actividades Económicas ( CIAE ) de las Naciones Unidas,
segunda revisión de 1968 y mediante la aplicación de proporciones de trabajadores expuestos a partir de datos generados
en estudios de higiene industrial para 139 agentes carcinógenos , los convierte a total de fuerza laboral expuesta y número
de trabajadores expuestos a agentes carcinogénicos según rama de actividad. . En este artículo se describe una modificación
y extensión del sistema CAREX (de CARcinogen Exposure) para calcular los números de trabajadores expuestos a agentes
cancerígenos y plaguicidas en Costa Rica. Esta es la primera aplicación de CAREX fuera de Europa (TICAREX) fue
realizada en Costa Rica, Centroamérica para 27 agentes cancerígenos y 7 grupos de plaguicidas, considerados de interés
para el país, realizando estimaciones por separado para mujeres y hombres . Los agentes cancerígenos más frecuentes a los
que se expone la fuerza laboral de Costa Rica de 1.3 millones fueron la radiación solar (333,000 trabajadores); las
emisiones de diesel (278,000); paraquat y diquat (175,000); el humo de tabaco ambiental (71,000); los compuestos de
cromo hexavalente (55,000); el benceno (52,000); mancozeb, maneb y zineb (49,000); clorotalonil (38,000); el polvo de
madera (32,000); el cuarzo (27,000); benomil (19,000); el plomo y sus compuestos inorgánicos (19,000); tetracloroetileno
(18,000); y los compuestos aromáticos policíclicos (17,000). En los hombres , la distribución se mantuvo muy ajustada a los
anteriores rangos, sin embargo en las mujeres, debido a su diferente distribución en los sectores, el formaldehído, el radón
y el cloruro de metileno superaron a los plaguicidas, el cromo (VI), el polvo de madera y el cuarzo. La agricultura, la
construcción, los servicios personales y domésticos, el transporte terrestre y acuático y los servicios asociados al transporte
, la fabricación de productos cerámicos y semejantes, la manufactura de productos de madera, la minería, la silvicultura, la
pesca, la fabricación de maquinaria y aparatos eléctricos, bares y restaurantes fueron sectores de donde las exposiciones son
frecuentes. Una reducción drástica de exposiciones laborales y ambientales a estos agentes daría por resultado mejoras
sustanciales en los niveles de salud pública y ocupacional. . La vigilancia de las exposiciones laborales y de la salud en el
trabajo son esenciales para el control de la contaminación y de las exposiciones a los agentes cancerígenos.
La adopción de políticas efectivas para la reducción de los peligros por estos agentes , debe considerar todas las fuentes de
exposición y la coordinación intersectorial para la creación, administración e implementación de las regulaciones en esta
materia. La reducción de los peligros químicos en el trabajo frecuentemente es seguida por una reducción en las emisiones
industriales al ambiente cercano a la planta o proceso productivo
Response of a Specialist Bat to the Loss of a Critical Resource
Human activities have negatively impacted many species, particularly those with unique traits that restrict their use of resources and conditions to specific habitats. Unfortunately, few studies have been able to isolate the individual and combined effects of different threats on population persistence in a natural setting, since not all organisms can be associated with discrete habitat features occurring over limited spatial scales. We present the results of a field study that examines the short-term effects of roost loss in a specialist bat using a conspicuous, easily modified resource. We mimicked roost loss in the natural habitat and monitored individuals before and after the perturbation to determine patterns of resource use, spatial movements, and group stability. Our study focused on the disc-winged bat Thyroptera tricolor, a species highly morphologically specialized for roosting in the developing furled leaves of members of the order Zingiberales. We found that the number of species used for roosting increased, that home range size increased (before: mean 0.14±SD 0.08 ha; after: 0.73±0.68 ha), and that mean association indices decreased (before: 0.95±0.10; after: 0.77±0.18) once the roosting habitat was removed. These results demonstrate that the removal of roosting resources is associated with a decrease in roost-site preferences or selectivity, an increase in mobility of individuals, and a decrease in social cohesion. These responses may reduce fitness by potentially increasing energetic expenditure, predator exposure, and a decrease in cooperative interactions. Despite these potential risks, individuals never used roost-sites other than developing furled leaves, suggesting an extreme specialization that could ultimately jeopardize the long-term persistence of this species' local populations
Hypothyroidism attenuates protein tyrosine nitration, oxidative stress and renal damage induced by ischemia and reperfusion: effect unrelated to antioxidant enzymes activities
BACKGROUND: It has been established that hypothyroidism protects rats against renal ischemia and reperfusion (IR) oxidative damage. However, it is not clear if hypothyroidism is able to prevent protein tyrosine nitration, an index of nitrosative stress, induced by IR or if antioxidant enzymes have involved in this protective effect. In this work it was explored if hypothyroidism is able to prevent the increase in nitrosative and oxidative stress induced by IR. In addition the activity of the antioxidant enzymes catalase, glutathione peroxidase, and superoxide dismutase was studied. Control and thyroidectomized (HTX) rats were studied 24 h of reperfusion after 60 min ischemia. METHODS: Male Wistar rats weighing 380 ± 22 g were subjected to surgical thyroidectomy. Rats were studied 15 days after surgery. Euthyroid sham-operated rats were used as controls (CT). Both groups of rats underwent a right kidney nephrectomy and suffered a 60 min left renal ischemia with 24 h of reperfusion. Rats were divided in four groups: CT, HTX, IR and HTX+IR. Rats were sacrificed and samples of plasma and kidney were obtained. Blood urea nitrogen (BUN) and creatinine were measured in blood plasma. Kidney damage was evaluated by histological analysis. Oxidative stress was measured by immunohistochemical localization of protein carbonyls and 4-hydroxy-2-nonenal modified proteins. The protein carbonyl content was measured using antibodies against dinitrophenol (DNP)-modified proteins. Nitrosative stress was measured by immunohistochemical analysis of 3-nitrotyrosine modified proteins. The activity of the antioxidant enzymes catalase, glutathione peroxidase, and superoxide dismutase was measured by spectrophotometric methods. Multiple comparisons were performed with ANOVA followed by Bonferroni t test. RESULTS: The histological damage and the rise in plasma creatinine and BUN induced by IR were significantly lower in HTX+IR group. The increase in protein carbonyls and in 3-nitrotyrosine and 4-hydroxy-2-nonenal modified proteins was prevented in HTX+IR group. IR-induced decrease in renal antioxidant enzymes was essentially not prevented by HTX in HTX+IR group. CONCLUSION: Hypothyroidism was able to prevent not only oxidative but also nitrosative stress induced by IR. In addition, the antioxidant enzymes catalase, glutathione peroxidase, and superoxide dismutase seem not to play a protective role in this experimental model
Pan-Atlantic analysis of the overlap of a highly migratory species, the leatherback turtle, with pelagic longline fisheries
Large oceanic migrants play important roles in ecosystems, yet many species are of conservation concern as a result of anthropogenic threats, of which incidental capture by fisheries is frequently identified. The last large populations of the leatherback turtle, Dermochelys coriacea, occur in the Atlantic Ocean, but interactions with industrial fisheries could jeopardize recent positive population trends, making bycatch mitigation a priority. Here, we perform the first pan-Atlantic analysis of spatio-temporal distribution of the leatherback turtle and ascertain overlap with longline fishing effort. Data suggest that the Atlantic probably consists of two regional management units: northern and southern (the latter including turtles breeding in South Africa). Although turtles and fisheries show highly diverse distributions, we highlight nine areas of high susceptibility to potential bycatch (four in the northern Atlantic and five in the southern/equatorial Atlantic) that are worthy of further targeted investigation and mitigation. These are reinforced by reports of leatherback bycatch at eight of these sites. International collaborative efforts are needed, especially from nations hosting regions where susceptibility to bycatch is likely to be high within their exclusive economic zone (northern Atlantic: Cape Verde, Gambia, Guinea Bissau, Mauritania, Senegal, Spain, USA and Western Sahara; southern Atlantic: Angola, Brazil, Namibia and UK) and from nations fishing in these high-susceptibility areas, including those located in international waters
Clinical trials in pediatric ALS: a TRICALS feasibility study.
Background: Pediatric investigation plans (PIPs) describe how adult drugs can be studied in children. In 2015, PIPs for Amyotrophic Lateral Sclerosis (ALS) became mandatory for European marketing-authorization of adult treatments, unless a waiver is granted by the European Medicines Agency (EMA).Objective: To assess the feasibility of clinical studies on the effect of therapy in children (<18 years) with ALS in Europe.Methods: The EMA database was searched for submitted PIPs in ALS. A questionnaire was sent to 58 European ALS centers to collect the prevalence of pediatric ALS during the past ten years, the recruitment potential for future pediatric trials, and opinions of ALS experts concerning a waiver for ALS.Results: Four PIPs were identified; two were waived and two are planned for the future. In total, 49 (84.5%) centers responded to the questionnaire. The diagnosis of 44,858 patients with ALS was reported by 46 sites; 39 of the patients had an onset < 18 years (prevalence of 0.008 cases per 100,000 or 0.087% of all diagnosed patients). The estimated recruitment potential (47 sites) was 26 pediatric patients within five years. A majority of ALS experts (75.5%) recommend a waiver should apply for ALS due to the low prevalence of pediatric ALS.Conclusions: ALS with an onset before 18 years is extremely rare and may be a distinct entity from adult ALS. Conducting studies on the effect of disease-modifying therapy in pediatric ALS may involve lengthy recruitment periods, high costs, ethical/legal implications, challenges in trial design and limited information
Are anthropogenic factors affecting nesting habitat of sea turtles? The case of Kanzul beach, Riviera Maya-Tulum (Mexico)
Marine coast modification and human pressure affects many species, including sea turtles. In order to study nine anthropogenic impacts that might affect nesting selection of females, incubation and hatching survival of loggerhead (Caretta caretta) and green turtle (Chelonia mydas), building structures were identified along a 5.2 km beach in Kanzul (Mexico). A high number of hotels and houses (88; 818 rooms), with an average density of 16.6 buildings per kilometer were found. These buildings form a barrier which prevents reaching the beach from inland, resulting in habitat fragmentation. Main pressures were detected during nesting selection (14.19% of turtle nesting attempts interrupted), and low impact were found during incubation (0.77%) and hatching (4.7%). There were three impacts defined as high: beach furniture that blocks out the movement of hatchlings or females, direct pressure by tourists, and artificial beachfront lighting that can potentially mislead hatchlings or females. High impacted areas showed lowest values in nesting selection and hatching success. Based on our results, we suggest management strategies to need to be implemented to reduce human pressure and to avoid nesting habitat loss of loggerhead and green turtle in Kanzul, Mexico
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