Syngas obtained by microwave pyrolysis of household wastes as feedstock for polyhydroxyalkanoate production in Rhodospirillum rubrum

The massive production of urban and agricultural wastes has promoted a clear need for alternative processes of disposal and waste management. The potential use of municipal solid wastes (MSW) as feedstock for the production of polyhydroxyalkanoates (PHA) by a process known as syngas fermentation is considered herein as an attractive bio-economic strategy to reduce these wastes. In this work, we have evaluated the potential of Rhodospirillum rubrum as microbial cell factory for the synthesis of PHA from syngas produced by microwave pyrolysis of the MSW organic fraction from a European city (Seville). Growth rate, uptake rate, biomass yield and PHA production from syngas in R. rubrum have been analysed. The results revealed the strong robustness of this syngas fermentation where the purity of the syngas is not a critical constraint for PHA production. Microwave-induced pyrolysis is a tangible alternative to standard pyrolysis, because it can reduce cost in terms of energy and time as well as increase syngas production, providing a satisfactory PHA yield.Research leading to these results has received funding from the European Union's Seventh Framework Programme for Research, Technological Development and Demonstration under grant agreement no. 311815 (SYNPOL), and from the Comunidad de Madrid (P2013/MIT2807). D. B. also acknowledges the financial support received from PCTI and FICYT of the Government of the Principado de Asturias.Peer reviewe

Molecular phylogeny of the genus Chondrina (Gastropoda, Panpulmonata, Chondrinidae) in the Iberian Peninsula

[EN] Chondrina Reichenbach, 1828 is a highly diverse genus of terrestrial molluscs currently including 44 species with about 28 subspecific taxa. It is distributed through North Africa, central and southern Europe, from Portugal in the West to the Caucasus and Asia Minor in the East. Approximately 70% of the species are endemic to the Iberian Peninsula constituting its main center of speciation with 34 species. This genus includes many micro endemic taxa, some of them not yet described, confined to limestone habitats (being strictly rock-dwelling species). They are distributed on rocky outcrops up to 2000 m.a.s.l. It is a genus of conical-fusiform snails that differ mainly in shell characters and in the number and position of teeth in their aperture. So far, molecular studies on Chondrina have been based exclusively on the mitochondrial Cytochrome Oxidase subunit I region (COI). These studies gave a first view of the phylogeny of the genus but many inner nodes were not statistically supported. The main objective of the study is to obtain a better understanding of the phylogeny and systematics of the genus Chondrina on the Iberian Peninsula, using multilocus molecular analysis. Partial sequences of the COI and 16S rRNA genes, as well as of the nuclear Internal Transcribed Spacer 1 (ITS1-5.8S) and Internal Transcribed Spacer 2 (5.8S-ITS2-28S) were obtained from individuals of all the extant Chondrina species known from the Iberian Peninsula. In addition to this, the newly obtained COI sequences were combined with those previously published in the GenBank. Phylogenetic relationships were inferred using maximum likelihood and Bayesian methods. The reconstructed phylogenies showed high values of support for more recent branches and basal nodes. Moreover, molecular species delimitation allowed to better define the studied species and check the presence of new taxa.This work was partially funded by the Basque Government through the Research group on “Systematics, Biogeography and Population Dynamics” (IT575-13) and “Systematics, Biogeography, Behavioural ecology and Evolution” (IT1163-19). E. Somoza Valdeolmillos was supported by a PhD fellowship awarded in 2015 by the University of the Basque Country (UPV/EHU)

Datos sobre los cardales y tobales (Onopordetea acanthii) en la provincia de León

P. 65-79Se estudian las comunidades dominadas por grandes cardos anuales, incluibles en la clase Onopordetea acanthii, describiéndose una nueva asociación Carduo nutantis-Cirsietum chodati Rivas-Martínez & F. Prieto y analizándose las siguientes asociaciones: Cirsio chodati-Carduetum carpe¡ani, Ono,oordetum acanzho-nervosi, Carduo bourgeani-Silybetum mariani y Cardao carpetani- Onopordetum acanthii de las que se describen diversas subasociaciones.S

Exploring the Different Degrees of Magnetic Disorder in TbxR1−xCu2 Nanoparticle Alloys

Recently, potential technological interest has been revealed for the production of magnetocaloric alloys using Rare-Earth intermetallics. In this work, three series of TbxR1−xCu2 (R ≡ Gd, La, Y) alloys have been produced in bulk and nanoparticle sizes via arc melting and high energy ball milling. Rietveld refinements of the X-ray and Neutron diffraction patterns indicate that the crystalline structure in all alloys is consistent with TbCu2 orthorhombic Imma bulk crystalline structure. The analyses of the DC-magnetisation (MDC) and AC-susceptibility (χAC) show that three distinct degrees of disorder have been achieved by the combination of both the Tb3+ replacement (dilution) and the nanoscaling. These disordered states are characterised by transitions which are evident to MDC, χAC and specific heat. There exists an evolution from the most ordered Superantiferromagnetic arrangement of the Tb0.5La0.5Cu2 NPs with Néel temperature, TN∼ 27 K, and freezing temperature, Tf∼ 7 K, to the less ordered weakly interacting Superparamagnetism of the Tb0.1Y0.9Cu2 nanoparticles (TN absent, and TB∼ 3 K). The Super Spin Glass Tb0.5Gd0.5Cu2 nanoparticles (TN absent, and Tf∼ 20 K) are considered an intermediate disposition in between those two extremes, according to their enhanced random-bond contribution to frustration.This work has been supported by the Spanish MAT2017-83631-C3-R grant. E.M.J.’s work was supported by “Beca de Colaboración”, BDNS: 311327 granted by Ministerio de Educación, Cultura y Deporte and “Beca Concepción Arenal” BDNS: 406333 granted by the Gobierno de Cantabria and the Universidad de Cantabria. MRF work was supported by FPI (BES-2012-058722)

Ecuaciones de referencia de la capacidad aeróbica máxima ciclo-ergoespirometría para la población española adulta

[EN] Background: Frequently used reference values for clinical exercise testing have been derived from non-random samples and some with poorly defined maximal criteria. Our objective was to obtain population based reference values for peak oxygen uptake ( ̇VO2 ) and work rate (WR) for cardiopulmonary exercise testing in a representative sample of Caucasian Spanish men and women. Methods: 182 men and women, 20–85 years old, were included and exercised on cycle-ergometer to exhaustion. ( ̇VO2 ) and WR were measured. The equations obtained from this sample were validated in an independent cohort of 69 individuals, randomly sampled form the same population. Then a final equation merging the two cohorts (=251) was produced. Results: Height, sex and age resulted predictive of both ̇VO2 peak and WR. Weight and physical activity added very little to the accuracy to the equations. The formulas ̇VO2 peak = 0.017 · height (cm) − 0.023 · age (years) + 0.864 · sex (female = 0/male = 1) ± 179 l min−1 , and peak WR = 1.345 · height (cm) − 2.074 · age (years) + 76.54 · sex (female = 0/male = 1) ± 21.2 W were the best compromise between accuracy and parsimony. Conclusions: This study provides new and accurate ̇VO2 peak and WR rate reference values for individuals of European Spanish descent[ES] Antecedentes: Los valores de referencia utilizados con frecuencia para las pruebas de esfuerzo clínicas derivan de muestras no aleatorias y los criterios máximos para algunos de ellos están mal definidos. Nuestro objetivo fue obtener valores de referencia basados en la población general para el consumo máximo de oxígeno (VO 2 ) y la carga de trabajo (CT) para las pruebas de ejercicio cardiopulmonar a partir de una muestra representativa de varones y mujeres caucásicos españoles. Métodos: Se incluyeron 182 varones y mujeres, de entre 20 y 85 a ̃nos, que realizaron ejercicio en el cicloergómetro hasta el agotamiento. Se midieron el VO 2 y la CT. Las ecuaciones obtenidas de esta muestra se validaron en una cohorte independiente de 69 individuos, seleccionados aleatoriamente de la misma población. A continuación, se creó una ecuación final que fusionó las dos cohortes (n = 251). Resultados: La altura, el sexo y la edad resultaron predictivos tanto del ̇VO2 máximo como de la CT. El peso y la actividad física contribuyeron muy poco a la precisión de las ecuaciones. Las fórmulas ̇VO2 máximo = 0,017 × altura (cm) − 0,023 × edad (a ̃nos) + 0,864 × sexo (mujer = 0/varón = 1) ± 179 L × min−1 ; y CT máxima = 1,345 × altura (cm) − 2,074 × edad (a ̃nos) + 76,54 × sexo (mujer = 0/varón = 1) ± 21,2 W fueron el mejor equilibrio entre precisión y parsimonia. Conclusiones: Este estudio proporciona valores de referencia del ̇VO 2 máximo y la CT nuevos y precisos para personas de ascendencia espa ̃nola europea.This study was supported by a SEPAR (Sociedad Española de Neumología y Cirugía Torácica/Spanish society of Pulmonology and Thoracic Surgery) grant and NEUMOMADRD (Sociedad Madrileña de Neumología y Cirugía Torácica/Madrilenian Society of Pulmonology and Thoracic Surgery) research award

Preliminary data from a 4-year mirror-image and multicentre study of patients initiating paliperidone palmitate 6-monthly long-acting injectable antipsychotic: the Paliperidone 2 per Year study

Background: Paliperidone palmitate 6-monthly (PP6M) is the first long-acting antipsychotic injectable (LAI) to allow for only two medication administrations per year, though there is presently limited insight into its effectiveness and potential added value in real clinical practice conditions. Objectives: To present our ongoing study and draw its preliminary data on patient characteristics initiating PP6M and adherence during the first year of treatment. Methods: The paliperidone 2 per year (P2Y) study is a 4-year, multicentre, prospective mirror-image pragmatic study taking place at over 20 different sites in Europe. The mirror period covers 2 years either side of the PP6M LAI initiation. Retrospective data for the previous 2 years are collected for each patient from the electronic health records. Prospective data are recorded at baseline, 6, 12, 18 and 24 months of drug administration and also cover information on concomitant psychiatric medication, relapses, hospital admissions, side effects, discontinuation and its reasons. Meanwhile, here we present preliminary data from the P2Y study at basal and 6-month period (first and second PP6M administration). Results: At the point of PP6M initiation, the most frequent diagnosis was schizophrenia (69%), the clinical global impression scale mean score was 3.5 (moderately markedly ill) and the rate of previous hospital admissions per patient and year was 0.21. PP6M was initiated after a median of 3-4 years on previous treatment: 146 (73%) from paliperidone palmitate 3-monthly, 37 (19%) from paliperidone palmitate 1-monthly and 17 (9%) from other antipsychotics. The mean dose of the first PP6M was 1098.9 mg. The retention rate at 6 months and 1 year of treatment on PP6M in our cohort was 94%. Conclusion: Patient and clinician preference for LAIs with longer dosing intervals was the main reason for PP6M initiation/switching resulting in high treatment persistence. Future data are needed to evaluate the full impact of PP6M in clinical practice

Tumor xenograft modeling identifies an association between TCF4 loss and breast cancer chemoresistance

Understanding the mechanisms of cancer therapeutic resistance is fundamental to improving cancer care. There is clear benefit from chemotherapy in different breast cancer settings; however, knowledge of the mutations and genes that mediate resistance is incomplete. In this study, by modeling chemoresistance in patientderived xenografts (PDXs), we show that adaptation to therapy is genetically complex and identify that loss of transcription factor 4 (TCF4; also known as ITF2) is associated with this process. A triple-negative BRCA1-mutaied PDX was used to study the genetics of chemoresistance. The PDX was treated in parallel with four chemotherapies for five iterative cycles. Exome sequencing identified few genes with de novo or enriched mutations in common among the different therapies, whereas many common depleted mutations/ genes were observed. Analysis of somatic mutations from The Cancer Genome Atlas (TCGA) supported the prognostic relevance of the identified genes. A mutation in TCF4 was found de novo in all treatments, and analysis of drug sensitivity profiles across cancer cell lines supported the link to chemoresistance. Loss of TCF4 conferred chemoresistance in breast cancer cell models, possibly by altering cell cycle regulation. Targeted sequencing in chemoresistant tumors identified an intronic variant of TCF4 that may represent an expression quantitative trait locus associated with relapse outcome in TCGA. Immunohistochemical studies suggest a common loss of nuclear TCF4 expression post-chemotherapy. Together, these results from tumor xenograft modeling depict a link between altered TCF4 expression and breast cancer chemoresistance

IEOOS: the Spanish Institute of Oceanography Observing System

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