78 research outputs found

    Spanish/german contrastive research study on language pathologies in children: dyslexia

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    La dislexia es un trastorno específico del aprendizaje de la lectura y escritura, que lleva estudiándose desde hace décadas, pero de la que aún se desconoce la causa exacta. Esta patología del lenguaje existe en todas las lenguas escritas y, por ello, es de esperar que existan diferencias en los síntomas y en las dificultades entre idiomas a la hora de escribir. En el presente trabajo se ha realizado un estudio contrastivo sobre el déficit del aprendizaje de, concretamente, la escritura en dos idiomas, que son el alemán y el español. Para ello, se han analizado los datos necesarios de dos sujetos, uno español y otro alemán, a través de dos tests diferentes de evaluación de la escritura, lo que ha permitido contrastar los errores cometidos por ambos sujetos. Gracias a este trabajo de comparación, se ha podido afirmar que, a pesar de que los errores cometidos en una lengua y otra son del mismo tipo, la complejidad de la ortografía de un idioma influye en las dificultades de la escritura.Grado en Logopedi

    This Is My Baby Interview: An Adaptation to the Spanish Language and Culture

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    Evaluating the emotional state of parents is important for determining the intervention in the context of a family with a baby with Down syndrome. “This is my baby” is an interview that measures the acceptance, commitment and awareness of influence of parents towards their baby. The Spanish adaptation of this instrument helps to better understand the emotional state of parents of children with developmental disorders. A cross-cultural adaptation and reliability analysis was carried out. The results suggest that the Spanish version of the This Is My Baby interview is a reliable instrument to measure the levels of acceptance, commitment and awareness of influence of parents of an infant with Down syndrome

    Conserved pseudoknots in lncRNA MEG3 are essential for stimulation of the p53 pathway

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    Funding Information: Work in the Marcia lab is partly funded by the Agence Nationale de la Recherche (ANR-15-CE11-0003-01), the Agence Nationale de Recherche sur le Sida et les H?patites Virales (ANRS, ECTZ18552), and ITMO Cancer (18CN047-00). The Marcia lab uses the platforms of the Grenoble Instruct Center (ISBG UMS 3518 CNRS-CEA-UJF-EMBL) with support from FRISBI (ANR-10-INSB-05-02) and GRAL (ANR-10-LABX-49-01) within the Grenoble Partnership for Structural Biology (PSB). IBS acknowledges integration into the Interdisciplinary Research Institute of Grenoble (IRIG, CEA). This work acknowledges the AFM platform at the IBS.Long non-coding RNAs (lncRNAs) are key regulatory molecules, but unlike with other RNAs, the direct link between their tertiary structure motifs and their function has proven elusive. Here we report structural and functional studies of human maternally expressed gene 3 (MEG3), a tumor suppressor lncRNA that modulates the p53 response. We found that, in an evolutionary conserved region of MEG3, two distal motifs interact by base complementarity to form alternative, mutually exclusive pseudoknot structures (“kissing loops”). Mutations that disrupt these interactions impair MEG3-dependent p53 stimulation in vivo and disrupt MEG3 folding in vitro. These findings provide mechanistic insights into regulation of the p53 pathway by MEG3 and reveal how conserved motifs of tertiary structure can regulate lncRNA biological function.Publisher PDFPeer reviewe

    Análise de contido, tratamento estético e de linguaxe dos informativos audiovisuais en Galicia

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    No marco dun proxecto de investigación do Grupo de Estudos Audiovisuais do Departamento de Ciencias da Comunicación da USC deseñouse un sistema de xestión da información audiovisual co obxectivo de realizar un seguemento periódico dos informativos das emisoras de radio e de televisión en Galicia con maiores índices de audiencia e de cobertura autonómica (TVG, TVE-Galicia, RG, RNE-1, COPE, SER, Onda Cero, Radio Voz e Punto Radio). Esta base de datos de acceso online elaborouse a partires dunha ficha de análise na que se abordan – desde o punto de vista cuantitativo e cualitativo – parámetros como a xerarquización e estrutura informativa, o desglose temático, ámbeto xeográfico (orixe da información), natureza e diversidade de fontes, entre outros. O propósito principal desta investigación, na que se levan analizado máis de 20 mil novas e máis de 30 mil fontes, é obter unha completa radiografía da realidade informativa. Este corpus é susceptible de numerosas aplicacións para a obtención de resultados baseados na complementariedade e interrelacionabilidade, e permite extraer conclusións sobre o tratamento informativo, estético e de linguaxe da información audiovisual en Galicia

    Exon sequence requirements for excision in vivo of the bacterial group II intron RmInt1

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    <p>Abstract</p> <p>Background</p> <p>Group II intron splicing proceeds through two sequential transesterification reactions in which the 5' and 3'-exons are joined together and the lariat intron is released. The intron-encoded protein (IEP) assists the splicing of the intron <it>in vivo </it>and remains bound to the excised intron lariat RNA in a ribonucleoprotein particle (RNP) that promotes intron mobility. Exon recognition occurs through base-pairing interactions between two guide sequences on the ribozyme domain dI known as EBS1 and EBS2 and two stretches of sequence known as IBS1 and IBS2 on the 5' exon, whereas the 3' exon is recognized through interaction with the sequence immediately upstream from EBS1 [(δ-δ' interaction (subgroup IIA)] or with a nucleotide [(EBS3-IBS3 interaction (subgroup IIB and IIC))] located in the coordination-loop of dI. The δ nucleotide is involved in base pairing with another intron residue (δ') in subgroup IIB introns and this interaction facilitates base pairing between the 5' exon and the intron.</p> <p>Results</p> <p>In this study, we investigated nucleotide requirements in the distal 5'- and 3' exon regions, EBS-IBS interactions and δ-δ' pairing for excision of the group IIB intron RmInt1 <it>in vivo</it>. We found that the EBS1-IBS1 interaction was required and sufficient for RmInt1 excision. In addition, we provide evidence for the occurrence of canonical δ-δ' pairing and its importance for the intron excision <it>in vivo.</it></p> <p>Conclusions</p> <p>The excision <it>in vivo </it>of the RmInt1 intron is a favored process, with very few constraints for sequence recognition in both the 5' and 3'-exons. Our results contribute to understand how group II introns spread in nature, and might facilitate the use of RmInt1 in gene targeting.</p

    Focal adhesion genes refine the intermediate-risk cytogenetic classification of acute myeloid leukemia

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    © 2018 by the authors.In recent years, several attempts have been made to identify novel prognostic markers in patients with intermediate-risk acute myeloid leukemia (IR-AML), to implement risk-adapted strategies. The non-receptor tyrosine kinases are proteins involved in regulation of cell growth, adhesion, migration and apoptosis. They associate with metastatic dissemination in solid tumors and poor prognosis. However, their role in haematological malignancies has been scarcely studied. We hypothesized that PTK2/FAK, PTK2B/PYK2, LYN or SRC could be new prognostic markers in IR-AML. We assessed PTK2, PTK2B, LYN and SRC gene expression in a cohort of 324 patients, adults up to the age of 70, classified in the IR-AML cytogenetic group. Univariate and multivariate analyses showed that PTK2B, LYN and PTK2 gene expression are independent prognostic factors in IR-AML patients. PTK2B and LYN identify a patient subgroup with good prognosis within the cohort with non-favorable FLT3/NPM1 combined mutations. In contrast, PTK2 identifies a patient subgroup with poor prognosis within the worst prognosis cohort who display non-favorable FLT3/NPM1 combined mutations and underexpression of PTK2B or LYN. The combined use of these markers can refine the highly heterogeneous intermediate-risk subgroup of AML patients, and allow the development of risk-adapted post-remission chemotherapy protocols to improve their response to treatment.Pallarès, VictorThis work was supported by Instituto de Salud Carlos III (Co-funding from FEDER) [CD13/00074 to V.P., PI15/00378 and PIE15/00028 to R.M., FIS PI17/01246, RD12/0036/0071 and FIS PI14/00450 to J.S., RD12/0036/0069 to M.G.., ISCIII-PS13/1640 and PI16/0665 to E.B., and RD12/0036/0014 and PIE13/00046 to M.A.S.] CIBERONC [CB16/12/00284 to M.A.S.]; CIBER-BBN [CBV6/01/1031 and Nanomets3 to R.M.]; AGAUR [2017 FI_B 00680 to A.F.; 2017-SGR-865 and 2014PROD0005 to R.M. and 2014-SGR-1281 to J.S.]; Fundació La Marató TV3 [416/C/2013-2030 to R.M., 100830/31/32 to J.S., M.G.. and M.A.S.]; Josep Carreras Leukemia Research Institute [P/AG 2017 to R.M.]; Spanish Health Research Program [PI12/02321 to M.G..]; Spanish Association Against Cancer (AECC) [to M.C.C.]; a grant from the Cellex Foundation, Barcelona [to J.S.]; a grant from La Generalitat de Catalunya (PERIS) [SLT002/16/00433 to J.S.]; and a grant from Fundación Española de Hematología y Hemoterapia (FEHH) [to V.P.]

    Allele and haplotype frequencies of HLA-A, -B, -C, -DRB1, -DQB1 and -DQA1 in Castile and Leon region from North West of Spain

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    HLA studies have been used to determine the admixture of different populations within the Iberian Peninsula including neighbouring regions with shared origins, such as Portugal and Castile and Leon. These studies certainly can be used to study human migration that could establish populations currently settled according to genetic distant analysis based on the HLA diversity and language variety.This work was supported by the “Gerencia Regional de Salud de Castilla y Leon” (GRS 2080/A/19, 2019) and (GRS COVID 70/A/20, 2020)

    ADAR RNA editing on antisense RNAs results in apparent U-to-C base changes on overlapping sense transcripts

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    Despite hundreds of RNA modifications described to date, only RNA editing results in a change in the nucleotide sequence of RNA molecules compared to the genome. In mammals, two kinds of RNA editing have been described so far, adenosine to inosine (A-to-I) and cytidine to uridine (C-to-U) editing. Recent improvements in RNA sequencing technologies have led to the discovery of a continuously growing number of editing sites. These methods are powerful but not error-free, making routine validation of newly-described editing sites necessary. During one of these validations on DDX58 mRNA, along with A-to-I RNA editing sites, we encountered putative U-to-C editing. These U-to-C edits were present in several cell lines and appeared regulated in response to specific environmental stimuli. The same findings were also observed for the human long intergenic non-coding RNA p21 (hLincRNA-p21). A more in-depth analysis revealed that putative U-to-C edits result from A-to-I editing on overlapping antisense RNAs that are transcribed from the same loci. Such editing events, occurring on overlapping genes transcribed in opposite directions, have recently been demonstrated to be immunogenic and have been linked with autoimmune and immune-related diseases. Our findings, also confirmed by deep transcriptome data, demonstrate that such loci can be recognized simply through the presence of A-to-I and U-to-C mismatches within the same locus, reflective A-to-I editing both in the sense-oriented transcript and in the cis-natural antisense transcript (cis-NAT), implying that such clusters could be a mark of functionally relevant ADAR1 editing events

    Interlaboratory analytical validation of a Next-generation sequencing strategy for clonotypic assessment and minimal residual disease monitoring in multiple myeloma

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    [Context]: Minimal residual disease (MRD) is a major prognostic factor in multiple myeloma, although validated technologies are limited. [Objective]: To standardize the performance of the LymphoTrack next-generation sequencing (NGS) assays (Invivoscribe), targeting clonal immunoglobulin rearrangements, in order to reproduce the detection of tumor clonotypes and MRD quantitation in myeloma. [Design]: The quantification ability of the assay was evaluated through serial dilution experiments. Paired samples from 101 patients were tested by LymphoTrack, using Sanger sequencing and EuroFlow's next-generation flow (NGF) assay as validated references for diagnostic and follow-up evaluation, respectively. MRD studies using LymphoTrack were performed in parallel at 2 laboratories to evaluate reproducibility. [Results]: Sensitivity was set as 1.3 tumor cells per total number of input cells. Clonality was confirmed in 99% and 100% of cases with Sanger and NGS, respectively, showing great concordance (97.9%), although several samples had minor discordances in the nucleotide sequence of rearrangements. Parallel NGS was performed in 82 follow-up cases, achieving a median sensitivity of 0.001%, while for NGF, median sensitivity was 0.0002%. Reproducibility of LymphoTrack-based MRD studies (85.4%) and correlation with NGF (R2 > 0.800) were high. Bland-Altman tests showed highly significant levels of agreement between flow and sequencing. [Conclusions]: Taken together, we have shown that LymphoTrack is a suitable strategy for clonality detection and MRD evaluation, with results comparable to gold standard procedures. Multiple myeloma (MM) is a plasma-cell dyscrasia characterized by the accumulation of plasma cells in the bone marrow that produces an excess of clonal immunoglobulins (M-protein or monoclonal component).1 New treatment approaches have increased the number of patients achieving complete response (CR),2–5 progressively improving progression-free and overall survival rates in the last 10 years.6–11 Nonetheless, the presence of low levels of drug-resistant cells (known as minimal residual disease, MRD)12–14 that remain undetected by conventional serologic and morphologic methods explains frequent relapses with this disease, which is still considered an incurable illness.Minimal residual disease is currently considered one of the most informative prognostic parameters, since those patients with undetectable disease have shown prolonged survival rates as compared with MRD-positive patients,15–17 and this difference is still significant even when patients achieving only stringent complete response (sCR) are taken into account.18 The International Myeloma Working Group (IMWG) defined MRD positivity as the persistence of clonal malignant plasma cells assessed with a sensitivity of at least 10−5 (1 malignant cell per hundred thousand normal cells)19 ; therefore, MRD should be monitored with only highly sensitive methods. To date, 3 different approaches have been tested for MRD monitoring in hematologic malignancies: immunophenotypic (multiparametric flow cytometry [MFC]),20 molecular (quantitative polymerase chain reaction [PCR], next-generation sequencing [NGS], digital PCR),21–23 and imaging tools (positron emission tomography–computed tomography; magnetic resonance imaging).24,25 However, in MM standardization has been achieved only for MFC26 and NGS.27,28 As a result, the IMWG recommended the use of highly sensitive, standardized flow and sequencing approaches,19 including EuroFlow's next-generation flow (NGF)29 and Adaptive Biotechnologies' ClonoSEQ solutions (Adaptive Biotechnologies, Seattle, Washington). NGF is a 2-tube, 8-color flow assay that allows the simultaneous analysis of 10 million cells, providing a sensitivity of around 2·10−6.This work was partially supported by the Instituto de Salud Carlos III (ISCIII), Spanish Ministry of Economy and Competitiveness PI15/01956, CIBERONC-CB16/12/00233, and “Una manera de hacer Europa” (Innocampus; CEI-2010-1-0010). García-Álvarez, Prieto-Conde, and Jiménez were supported by the Fundación Española de Hematología y Hemoterapia (FEHH, cofunded by Fundación Cris in the latter case), Medina by the European Social Fund through the University of Salamanca and the ISCIII (FI19/00320), and Sarasquete by the ISCIII (CPII18/00028). All Spanish funding is cosponsored by the European Union FEDER program
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