Impacto del ozono troposférico sobre la anatomía foliar de Abies pinsapo Boiss. I: estudio de la distribución de daños

Impacto del ozono troposférico sobre la anatomía foliar de Abies pinsapo Boiss. I: Estudio de la distribución de daños. Con el fin de elaborar unos criterios unificados para la evaluación del impacto del ozono troposférico y compararlos con la respuesta de las poblaciones naturales de Sierra Bermeja y Sierra de las Nieves, se han reproducido en cámaras Open Top, ambientes filtrados y enriquecidos con ozono para realizar una caracterización microscópica del daño que produce el ozono troposférico sobre Abies pinsapo Boiss. Los resultados demuestran que pese a que la morfología foliar permanece inalterada tras someter durante un mes en condiciones de 30 ppb durante 8 horas al día, a nivel tisular se han producido daños de consideración que afectan de este endemismoTropospheric ozone injury on the foliar anatomy of Abies pinsapo Boiss. I: Study of damage distribution. With the aim of develop unified criteria to evaluate the tropospheric ozone injury and compare with responses in Abies pinsapo Boiss. in natural populations in Sierra Bermeja and Sierra de las Nieves, it has been reproduced in Open Top Chambers conditions of filtered air and addition of controlled amounts of ozone. Results show that despite leaf morphology remains unaltered after a treatment with 30 ppb 8 hours per day, at tissue level there have been injuries that affect this endemis

Aproximación al estudio de las equisetáceas ibéricas, III. Acerca del cono del género Hippochaete Milde

Se realiza una descripción anatómica de cada una de las partes que constituye el cono de las especies ibéricas del género Hippochaete (H. ramosissima (Desf.) Bruhin, H. hyemalis (L.) Bruhin e H. variegata (Schleicher) Bruhin).An anatomic description of every constituent part of the genus Hippochaete (H. ramosissima (Desf.) Bruhin, H. hyemalis (L.) Bruhin and H. variegata (Schleicher) Bruhin) is expose

Sobre la distribución del almidón en las Lycopodyales

Se realiza una descripción de las zonas donde se acumula almidón, tanto en el tallo erecto como en el rastrero de Lycopodiales, observando que su disposición depende, en las especies estudiadas, del biótipo y de la anatomía.A detailed description of the zones where the starch is stored, both in the aerial shoot and the creeping stem of the Lycopodiales is done, correlating it with the biotypes and anatomy of the studied species

Propagación de Asplenium celtibericum Rivas Mart. (ASPLENIACEAE) a partir de sus esporas.

El estudio de la respuesta germinativa de especies raras o amenazadas permite establecer protocolos de germinación que aportan la información necesaria para su propagación, y por tanto colaboran a su conservación. Las especies de pequeño tamaño que buscan refugio entre las rocas muestran un carácter poco competitivo frente a otras especies, y suelen desarrollar estrategias diferentes que les permiten sobrevivir en lugares donde otras plantas no pueden.Este trabajo se ha cofinanciado por la Generalitat Valenciana (Conselleria de Agricultura, Medio Ambiente, Cambio Climático y Desarrollo Rural, Servicio de Biodiversidad) y la Universitat de València

Ensayo biogeográfico de la Pteridoflora valenciana

En el presente trabajo se realiza un análisis comparativo de las pteridofloras de los diiferentes sectores fitogeográficos (sensu Costa, 1986) que integran la Comunidad Valenciana.The present paper deals with the biogeography and of pteridophytes in the Comunidad Valenciana (Levante, Spain), following the present chorological division of this area

Plant species in Basque Country with positive bioactive principles for sleep rhythm

Las condiciones históricas, climatológicas y edáficas del País Vasco, son las principales causas de que su extensión se vea dominada por 3 formaciones vegetales potenciales: robledales, hayedos y quejigales. Nuestro objetivo fue estudiar qué especies vegetales medicinales presentan evidencias científicas para tratar problemas de sueño. Para ello, se consultó bibliografía y bases de datos referentes a especies sedantes, hipnóticas o ansiolíticas por presentar mecanismos de actuación similares, así como sus principios activos. Se concluye el estudio con la catalogación de 22 especies vegetales del País Vasco como remedios naturales para combatir los problemas del sueño presentes en la sociedad.Historic, climatic and soil conditions of the Basque Country, are the main causes which provokes its extension is mainly dominated by 3 types of potential vegetation: oak, beech and gall. Our objective was focused in researching what plants show scientific evidences to be used within sleep problems. Scientific literature and databases were consulted in those species referenced as sedatives, hypnotics or anxiolytics due they act through similar mechanisms, their bioactive principles were revised too. We conclude this study with 22 plant species in Basque Country as natural sleep inducers to be used in sleep problems in our society.Junta de Extremadura y Fondos FEDER: GR10003peerReviewe

"Acute kidney injury in critically ill patients with COVID-19 : The AKICOV multicenter study in Catalonia"

This study describes the incidence, evolution and prognosis of acute kidney injury (AKI) in critical COVID-19 during the first pandemic wave. We performed a prospective, observational, multicenter study of confirmed COVID-19 patients admitted to 19 intensive care units (ICUs) in Catalonia (Spain). Data regarding demographics, comorbidities, drug and medical treatment, physiological and laboratory results, AKI development, need for renal replacement therapy (RRT) and clinical outcomes were collected. Descriptive statistics and logistic regression analysis for AKI development and mortality were used. A total of 1,642 patients were enrolled (mean age 63 (15.95) years, 67.5% male). Mechanical ventilation (MV) was required for 80.8% and 64.4% of these patients, who were in prone position, while 67.7% received vasopressors. AKI at ICU admission was 28.4% and increased to 40.1% during ICU stay. A total of 172 (10.9%) patients required RRT, which represents 27.8% of the patients who developed AKI. AKI was more frequent in severe acute respiratory distress syndrome (ARDS) ARDS patients (68% vs 53.6%, p<0.001) and in MV patients (91.9% vs 77.7%, p<0.001), who required the prone position more frequently (74.8 vs 61%, p<0.001) and developed more infections. ICU and hospital mortality were increased in AKI patients (48.2% vs 17.7% and 51.1% vs 19%, p <0.001) respectively). AKI was an independent factor associated with mortality (IC 1.587-3.190). Mortality was higher in AKI patients who required RRT (55.8% vs 48.2%, p <0.04). Conclusions There is a high incidence of AKI in critically ill patients with COVID-19 disease and it is associated with higher mortality, increased organ failure, nosocomial infections and prolonged ICU stay

“Acute kidney injury in critically ill patients with COVID–19: The AKICOV multicenter study in Catalonia”

This study describes the incidence, evolution and prognosis of acute kidney injury (AKI) in critical COVID-19 during the first pandemic wave. We performed a prospective, observational, multicenter study of confirmed COVID-19 patients admitted to 19 intensive care units (ICUs) in Catalonia (Spain). Data regarding demographics, comorbidities, drug and medical treatment, physiological and laboratory results, AKI development, need for renal replacement therapy (RRT) and clinical outcomes were collected. Descriptive statistics and logistic regression analysis for AKI development and mortality were used. A total of 1,642 patients were enrolled (mean age 63 (15.95) years, 67.5% male). Mechanical ventilation (MV) was required for 80.8% and 64.4% of these patients, who were in prone position, while 67.7% received vasopressors. AKI at ICU admission was 28.4% and increased to 40.1% during ICU stay. A total of 172 (10.9%) patients required RRT, which represents 27.8% of the patients who developed AKI. AKI was more frequent in severe acute respiratory distress syndrome (ARDS) ARDS patients (68% vs 53.6%, p<0.001) and in MV patients (91.9% vs 77.7%, p<0.001), who required the prone position more frequently (74.8 vs 61%, p<0.001) and developed more infections. ICU and hospital mortality were increased in AKI patients (48.2% vs 17.7% and 51.1% vs 19%, p <0.001) respectively). AKI was an independent factor associated with mortality (IC 1.587-3.190). Mortality was higher in AKI patients who required RRT (55.8% vs 48.2%, p <0.04). Conclusions There is a high incidence of AKI in critically ill patients with COVID-19 disease and it is associated with higher mortality, increased organ failure, nosocomial infections and prolonged ICU stay

Morfología y distribución de las formaciones epidérmicas en la pinna de Polypodium cambricum subsp. serrulatum (Arcangeli) Pichi-Sermolli

Se lleva a cabo el estudio de estructuras epidérmicas de la pinna de Polypodium cambricum subsp. serrulatum (Arcangeli) Pichi-Sermolli, aportando datos sobre la localización en la lámina foliar de estomas, tricomas y paráfisis, asi como su distribución, número y anatomía

Sobre la distribución del almidón en las Lycopodyales

Se realiza una descripción de las zonas donde se acumula almidón, tanto en el tallo erecto como en el rastrero de Lycopodiales, observando que su disposición depende, en las especies estudiadas, del biótipo y de la anatomía.A detailed description of the zones where the starch is stored, both in the aerial shoot and the creeping stem of the Lycopodiales is done, correlating it with the biotypes and anatomy of the studied species