153 research outputs found

    Evaluating cherry tomato type (Solanum spp.) against late blight tomato Phytophthora infestans (Mont.) de Bary and root-knot nematode (Meloidogyne spp.) in two production systems.

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    El tomate (Solanum lycopersicum L.) es la hortaliza de mayor importancia en el mundo. Esta especie generalmente es afectada por nemátodos fitoparásitos a los que se les atribuye pérdidas en el rendimiento del cultivo que oscilan entre un 25 y 50 %; de igual forma es afectado por patógenos como el cromista Phytophthora infestans (Mont.) de Bary, reconocido en todo el mundo por los efectos devastadores que ha producido a lo largo de la historia y su difícil manejo. Se evalúo la resistencia de 15 introducciones de tomate silvestre tipo cereza contra el tizón tardío (P. infestans) y el nemátodo nodulador (Meloidogyne spp.) en dos sistemas de producción en la granja Montelindo de la Universidad de Caldas bajo un diseño experimental de parcelas divididas, donde las variables evaluadas fueron: severidad y tasa de desarrollo del tizón tardío, índice de daño causado por el nemátodo nodulador y estimación del rendimiento (t/ha). Los resultados permitieron observar que las introducciones presentaron susceptibilidad al tizón tardío y al nematodo nodulador; con severidades promedios para tizón tardío de 41,5 % y para Meloidogyne spp. de 8,3%; equivalente a un promedio de 30,4 agallas por planta. A pesar de presentar las sintomatologías de las enfermedades evaluadas, todas las introducciones llegaron a producción; entre las más destacadas se encontraron IAC 421, IAC 1621, IAC 391 e IAC 1688 con rendimientos de 14, 13, 12 y 12 t/ha, respectivamente.Tomato (Solanum lycopersicum L.) is the most important vegetable in the world. This species is generally affected by parasitic nematodes which are responsible for crop yield losses ranging between 25% and 50%. Similarly, tomato is affected by pathogens such as the Chromista Phytophthora infestans (Mont.) De Bary, known worldwide by the devastating effects it has produced throughout history and its difficulty to control. The resistance of 15 introductions of wild cherry tomato against late blight (P. infestans) tomato and the root-knot nematode (Meloidogyne spp.) was evaluated in two production systems at the Montelindo farm of Universidad de Caldas using a split-plot experimental design in which the variables evaluated were: Late blight severity and rate of development, index of damage caused by the root-knot nematode and estimated yield (t/ha). The results showed that the introductions evaluated presented susceptibility to both, late blight and root-knot nematode, with average severity of 41,5% for late blight and 8,3% for Meloidogyne spp., equivalent to an average of 30.4 galls per plant. Despite presenting the symptomatology of the diseases evaluated, all the introductions reached production being among the most prominent IAC 421, IAC 1621, IAC 391 and IAC 1688 with yields of 14, 13, 12 and 12 t/ha, respectively

    Overexpression of proinflammatory cytokines in dental pulp tissue and distinct bacterial microbiota in carious teeth of Mexican Individuals

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    The prevalence of dental caries in the Mexican adult population aged 20 to 85 years is around 93.3%, and 50% in Mexican children and adolescents. Worldwide, it is the most common non-communicable disease. One of the main etiological factors for dental caries is the oral microbiome and changes in its structure and function, with an expansion of pathogenic bacteria like Streptococcus mutans. The exposed dental pulp tissue triggers an innate immune response to counteract this bacterial invasion. The relation between oral dysbiosis and innate immune responses remains unclear. We aimed to understand the relationship between innate immune response and the oral microbiota by quantifying the expression of Toll-like receptors (TLRs) and proinflammatory markers (cytokines and a chemokine) in dental pulp tissue, either exposed or not to carious dentin, and to correlate this information with the oral microbiome found in healthy teeth and those with moderate caries. RNA was purified from pulp tissue, subjected to RT-qPCR and analysed with the ΔΔCt method. Supragingival dental plaque of non-carious teeth and dentin of carious teeth were subjected to 16S targeted sequencing. Principal coordinate analysis, permutational multivariate ANOVA, and linear discriminant analysis were used to assess differences between non-carious and carious teeth. Correlations were assessed with Spearman´s test and corrected for multiple comparisons using the FDR method. The relative abundance (RA) of Lactobacillus, Actinomyces, Prevotella, and Mitsuokella was increased in carious teeth; while the RA of Haemophilus and Porphyromonas decreased. Olsenella and Parascardovia were only detected in carious teeth. Significant overexpression of interleukin 1 beta (IL1 β), IL6, and CXCL8 was detected in pulp tissue exposed to carious dentin. IL1β correlated positively with TLR2 and Actinomyces; yet negatively with Porphyromonas. These findings suggest that immune response of pulp tissue chronically exposed to cariogenic microbiome is triggered by proinflammatory cytokines IL1β and IL6 and the chemokine CXCL8

    Single nucleotide polymorphisms associated with susceptibility for development of colorectal cancer: Case-control study in a Basque population

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    Given the significant population diversity in genetic variation, we aimed to investigate whether single nucleotide polymorphisms (SNPs) previously identified in studies of colorectal cancer (CRC) susceptibility were also relevant to the population of the Basque Country (North of Spain). We genotyped 230 CRC cases and 230 healthy controls for 48 previously reported CRC-susceptibility SNPs. Only the rs6687758 in DUPS10 exhibited a statistically significant association with CRC risk based on the crude analysis. The rs6687758 AG genotype conferred about 2.13-fold increased risk for CRC compared to the AA genotype. Moreover, we found significant associations in cases between smoking status, physical activity, and the rs6687758 SNP. The results of a Genetic Risk Score (GRS) showed that the risk alleles were more frequent in cases than controls and the score was associated with CRC in crude analysis. In conclusion, we have confirmed a CRC susceptibility locus and the existence of associations between modifiable factors and the rs6687758 SNP; moreover, the GRS was associated with CRC. However, further experimental validations are needed to establish the role of this SNP, the function of the gene identified, as well as the contribution of the interaction between environmental factors and this locusto the risk of CRC.This work was supported by two projects (from the Department of Health and Consumer Affairs, Basque Government 2011111153; and Saiotek, Basque Government S-PE12UN058), by a pre-doctoral grant from the Basque Government (PRE_2016_2_0046), by the CIBERehd and by the U.S. Department of Agriculture-Agricultural Research Service (ARS), under agreement. 581950-4-003. Neither Basque Government nor U.S. Department of Agriculture-Agricultural Research Service (ARS) had a role in the design, analysis or writing of this article. CIBERehd is funded by the Instituto de Salud Carlos III

    Food groups, diet quality and colorectal cancer risk in the Basque Country

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    BACKGROUND The results obtained to date concerning food groups, diet quality and colorectal cancer (CRC) risk vary according to criteria used and the study populations. AIM To study the relationships between food groups, diet quality and CRC risk, in an adult population of the Basque Country (North of Spain). METHODS This observational study included 308 patients diagnosed with CRC and 308 ageand sex-matched subjects as controls. During recruitment, dietary, anthropometric, lifestyle, socioeconomic, demographic and health status information was collected. Adherence to the dietary recommendations was evaluated utilizing the Healthy Eating Index for the Spanish Diet and the MedDietScore. Conditional logistic regressions were used to evaluate the associations of food group intakes, diet quality scores, categorized in tertiles, with CRC risk. RESULTS The adjusted models for potential confounding factors showed a direct association between milk and dairy products consumption, in particular high-fat cheeses [odds ratio (OR) third tertile vs first tertile = 1.87, 95% confidence intervals (CI): 1.11-3.16], and CRC risk. While the consumption of fiber-containing foods, especially whole grains (OR third tertile vs first tertile = 0.62, 95%CI: 0.39-0.98), and fatty fish (OR third tertile vs first tertile = 0.53, 95%CI: 0.27-0.99) was associated with a lower risk for CRC. Moreover, higher MD adherence was associated with a reduced CRC risk in adjusted models (OR third tertile vs first tertile = 0.40, 95%CI: 0.20-0.80). CONCLUSION Direct associations were found for high-fat cheese, whereas an inverse relation was reported for fiber-containing foods and fatty fish, as well as adherence to a Mediterranean dietary pattern.Supported by the Department of Health and Consumer Affairs, Basque Government, No. 2011111153; Saiotek, Basque Government, No. S-PE12UN058; Pre-doctoral grant from the Basque Government, No. PRE_2015_2_0084; and United States Department of Agriculture—Agricultural Research Service, No. 58-1950-4-003

    Comparative Effects of Pterostilbene and Its Parent Compound Resveratrol on Oxidative Stress and Inflammation in Steatohepatitis Induced by High-Fat High-Fructose Feeding

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    Different studies have revealed that oxidative stress and inflammation are crucial in NAFLD (Non-alcoholic fatty liver disease). The aim of this study is to analyze whether pterostilbene and resveratrol are able to either avoid or delay the progression of non-alcoholic liver steatosis towards steatohepatitis. This has been performed by examining their effects on oxidative stress, inflammation, fibrosis and pre-carcinogenic stages. Rats were distributed into five experimental groups and were fed with either a standard diet or a high-fat high-fructose diet, supplemented or not with pterostilbene (15 or 30 mg/kg/d) or resveratrol (30 mg/kg/d), for 8 weeks. Liver histological analysis was carried out by haematoxylin–eosin staining. Serum and hepatic oxidative stress-related parameters were assessed using spectrophotometry, and the expression of genes related to inflammation, fibrosis and cancer by qRT-PCR. The dietary model used in this study led to the development of steatohepatitis, where rats displayed oxidative stress, inflammation and ballooning, although not fibrosis. It also modified the expression of hepatocarcinoma-related genes. The results show, for the first time, that pterostilbene was able to partially prevent these alterations, with the exception of changes in hepatocarcinoma-related genes, mainly at 30 mg/kg/d. Pterostilbene was more effective than its parent compound resveratrol, probably due to its high bioavailability and higher anti-oxidant and anti-inflammatory activities, attributable to its different chemical structure.This study was supported by grants from the Ministerio de Economía y Competitividad (AGL-2015-65719-R), Fondo Europeo de Desarrollo Regional (FEDER), the Instituto de Salud Carlos III (CIBERobn) under Grant CB12/03/30007 and the University of the Basque Country under Grant GIU18-173

    Gene–Diet Interactions in Colorectal Cancer: Survey Design, Instruments, Participants and Descriptive Data of a Case–Control Study in the Basque Country

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    Epidemiologic studies have revealed inconsistent evidence of gene-diet interaction in relation to colorectal cancer (CRC). The aim of this study was to analyze them in a sample of cases and controls from the population-based bowel cancer screening program of the Osakidetza/Basque Health Service. This study analyzed dietetic, genetic, demographic, socioeconomic factors and lifestyles. In the present manuscript, the survey design, sampling, instruments, measurements and related quality management were presented. Moreover, we analyze di erences between cases and controls in some data, especially those related to diet. The participants were 308 cases and 308 age- and sex-matched subjects as controls. Cases were more likely than controls to have overweight/obesity (67.5% vs. 58.1%, p < 0.05), a lower intake of vitamin B2 (0.86 0.23 vs. 0.92 0.23 mg/1000 kcal, p < 0.01) and calcium:phosphorus ratio (0.62 0.12 vs. 0.65 0.13, p < 0.01). A higher proportion of cases than controls did not meet the Nutritional Objectives for saturated fatty acids (85.7% vs. 67.5%, p < 0.001) or cholesterol (35.4% vs. 25.0%, p < 0.01). In conclusion, the present study provides valuable data for analyzing the complexity of gene-diet interaction in relation to CRC. The results presented here suggest that overweight/obesity and a high intake of certain dietary components, especially saturated fatty acids and cholesterol, are more frequent in cases than in controls.This research was supported by the Department of Health and Consumer A airs of the Basque Government (2011111153) and Saiotek program of the Basque Government (S-PE12UN058). I.A.-L. was founded by a pre-doctoral grant from the Basque Government (PRE_2014_1_161, PRE_2015_2_0084, EP_2016_1_0098, EP_2016_1_0098 and PRE_2017_2_0006). The U.S. Department of Agriculture—Agricultural Research Service (ARS), under Agreement No. 58-1950-4-003. CIBERehd is funded by the Instituto de Salud Carlos III

    Making Musical Works in Renaissance Spain

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    Producción CientíficaWhy is it that Renaissance musicians (in Spain in this case) could identify as the same work compositions that today might be seen as different? Wherein was the commonality? Current ontologies of music, deeply rooted in modern theories and aesthetics revolve around the notion of musical masterpieces that exist as static monuments of musical art. Not only inadequate from a historical point of view, such a conceptualisation impacts heavily on the way we perform music, how we study it and how we think about it today. Scholars such as Treitler and Strohm have proposed substituting composition over practice to highlight the act of performance over prior creation as a way of shifting the focus in the development of contemporary historiography. In parallel with recent studies on contrapuntal improvisation they have stressed the need to incorporate oral traditions within music history and to stimulate reconsideration conceptualisation of “making musical works” in the Renaissance, and the very nature of the works themselves. Starting with the notion of the Renaissance “musical work” as a group of fluid, dynamic multiplicities, this book explores varied approaches to the “musical work.” It includes lexicological analyses of Renaissance musical terminology, source studies that identify the changing practices and identities of specific works, and broader questions such as interrelationships between music, architecture and rhetoric, o between space and work. The book is further enriched by a study of the 15,000 musical works that resided in the library of Ferdinand Columbus, that survive as indices, never studied or published.Departamento de Música y Expresión MusicalEste trabajo forma parte del proyecto de investigación “La obra musical renacentista: fundamentos, repertorios y prácticas” HAR 2015-70181-P (MINECO/FEDER, UE

    Evaluación de biotipos ovinos en relación a su producción de carne y lana en el área central de país (Programa: sustentabilidad productiva de pequeños rumiantes en áreas desfavorables - supprad)

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    Las circunstancias productivas y las leyes de promoción han generado el desarrollo de emprendimientos comerciales en producción ovina. La población ovina compuesta de majadas con base criolla y cruzas con razas estandarizadas, parecería marcar una limitante productiva en carne y lana. Sin embargo, las experiencias en otros lugares confirman una buena alternativa de producción de carne de corderos pesados y lana para tapicería con cruzas y poblaciones primarias. Esto plantea la hipótesis que el desarrollo de sistemas de producción ovina basada en corderos livianos y/o pesados se complementa con la producción de lana para tapicería. El objetivo general es: evaluar biológica y económicamente biotipos ovinos criados en el área central (provincia de Córdoba incluida), en relación a la producción de carne y lana a través de estudios de estructuras de poblaciones y ensayos específicos, con la finalidad de conocer la posible rentabilidad. El proyecto se va a desarrollar en localidades con carcacterísticas agroecológicas distintas: 2 en Córdoba y 3 en La Pampa. Se van a desarrollar estudios de estructura productiva en carne y lana e identificación de biotipos específicos y luego se va a desarrollar un ensayo de engorde de corderos destetados, evaluación de la producción de lana, del crecimiento y faena para evaluar calidad de canal y calidad de carne para dos categorias: livianos(2 meses edad de faena) y pesados (5 meses). Este proyecto pretende demostrar la cumplementariedad del ingreso entre producción de lana para la confección de alfombras y carne de corderos livianos y pesados. Los resultados esperados tenderán a aportar una importante solución para pequeños productores que conservan majadas improductivas que de esta forma podrían desarrollar un empresa económicamente viable.Fil: Frank, Eduardo Narciso. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Hick, Michel Victor Hubert. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Zogbi, Ana Paola. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentin

    Results of A Phase 1 study of the oncolytic adenovirus DNX-2401 with radiotherapy for newly diagnosed diffuse intrinsic pontine glioma (DIPG)

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    Background A Phase 1, single center study is ongoing to evaluate the conditionally replicative oncolytic adenovirus, DNX-2401 (tasadenoturev), followed by radiotherapy (RT) in pediatric patients with newly diagnosed diffuse intrinsic pontine glioma (DIPG). Methods Patients 1–18 years with newly diagnosed DIPG with no prior treatment, Lansky/Karnofsky performance score ≥ 70, and adequate organ function were enrolled. A tumor biopsy was performed followed by a single intratumoral injection of 1e10-5e10 virus particles (vp) DNX-2401. Conventional radiotherapy was initiated within 1 month of DNX-2401 administration. Results Enrolled subjects (n=12) had a median age of 9 (range 3–18) and performance scores of 90–100 (n=4; 33%) or 70–80 (n=8; 67%). As part of a dose escalation design, subjects were treated with 1e10 vp (n=4) or 5e10 vp DNX-2401 (n=8), which was then followed by standard RT in 11 of 12 subjects (92%). No dose-limiting toxicities were observed and the treatment regimen was well-tolerated. Adverse events (AEs) have been primarily mild to moderate and consistent with underlying disease. The most commonly reported AEs (≥ 5 subjects), regardless of study drug relationship, include headache, asthenia, vomiting, anemia, leukocytosis, and fever. Two SAEs have been reported including grade 3 lymphopenia and grade 3 abdominal pain. Tumor reductions have been observed and efficacy evaluations are ongoing. As of 09Dec2020, 12-month survival (OS-12) was 71% and 4 of 12 patients had survived > 20 months. Four subjects continue to be followed for survival. Correlative analysis of tumor biopsy and peripheral samples is ongoing. Conclusions DNX-2401 followed by RT can be safely administered to pediatric subjects with newly diagnosed DIPG; clinical activity and preliminary survival are encouraging

    Incidence, risk factors, clinical characteristics and outcomes of deep venous thrombosis in patients with COVID-19 attending the Emergency Department: results of the UMC-19-S8

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    Background and importance: A higher incidence of venous thromboembolism [both pulmonary embolism and deep vein thrombosis (DVT)] in patients with coronavirus disease 2019 (COVID-19) has been described. But little is known about the true frequency of DVT in patients who attend emergency department (ED) and are diagnosed with COVID-19. Objective: We investigated the incidence, risk factors, clinical characteristics and outcomes of DVT in patients with COVID-19 attending the ED before hospitalization. Methods: We retrospectively reviewed all COVID patients diagnosed with DVT in 62 Spanish EDs (20% of Spanish EDs, case group) during the first 2 months of the COVID-19 outbreak. We compared DVT-COVID-19 patients with COVID-19 without DVT patients (control group). Relative frequencies of DVT were estimated in COVID and non-COVID patients visiting the ED and annual standardized incidences were estimated for both populations. Sixty-three patient characteristics and four outcomes were compared between cases and controls. Results: We identified 112 DVT in 74 814 patients with COVID-19 attending the ED [1.50‰; 95% confidence interval (CI), 1.23-1.80‰]. This relative frequency was similar than that observed in non-COVID patients [2109/1 388 879; 1.52‰; 95% CI, 1.45-1.69‰; odds ratio (OR) = 0.98 [0.82-1.19]. Standardized incidence of DVT was higher in COVID patients (98,38 versus 42,93/100,000/year; OR, 2.20; 95% CI, 2.03-2.38). In COVID patients, the clinical characteristics associated with a higher risk of presenting DVT were older age and having a history of venous thromboembolism, recent surgery/immobilization and hypertension; chest pain and desaturation at ED arrival and some analytical disturbances were also more frequently seen, d-dimer >5000 ng/mL being the strongest. After adjustment for age and sex, hospitalization, ICU admission and prolonged hospitalization were more frequent in cases than controls, whereas mortality was similar (OR, 1.37; 95% CI, 0.77-2.45). Conclusions: DVT was an unusual form of COVID presentation in COVID patients but was associated with a worse prognosis
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