Hepatocellular carcinoma risk-stratification based on ASGR1 in circulating epithelial cells for cancer interception

Purpose: Lack of diagnostic and prognostic biomarkers in hepatocellular carcinoma impedes stratifying patients based on their risk of developing cancer. The aim of this study was to evaluate phenotypic and genetic heterogeneity of circulating epithelial cells (CECs) based on asialoglycoprotein receptor 1 (ASGR1) and miR-122-5p expression as potential diagnostic and prognostic tools in patients with hepatocellular carcinoma (HCC) and liver cirrhosis (LC). Methods: Peripheral blood samples were extracted from LC and HCC patients at different disease stages. CECs were isolated using positive immunomagnetic selection. Genetic and phenotypic characterization was validated by double immunocytochemistry for cytokeratin (CK) and ASGR1 or by in situ hybridization with miR-122-5p and CECs were visualized by confocal microscopy. Results: The presence of CECs increased HCC risk by 2.58-fold, however, this was only significant for patients with previous LC (p = 0.028) and not for those without prior LC (p = 0.23). Furthermore, the number of CECs lacking ASGR1 expression correlated significantly with HCC incidence and absence of miR-122-5p expression (p = 0.014; r = 0.23). Finally, overall survival was significantly greater for patients at earlier cancer stages (p = 0.018), but this difference was only maintained in the group with the presence of CECs (p = 0.021) whereas progression-free survival was influenced by the absence of ASGR1 expression. Conclusion: Identification and characterization of CECs by ASGR1 and/or miR- 122-5p expression may be used as a risk-stratification tool in LC patients, as it was shown to be an independent prognostic and risk-stratification marker in LC and early disease stage HCC patients.Regional Ministry of Health of AndalusiaMinistry of Economy, Competitiveness, Enterprises and Universities PC-0522-2016 PC-0267-2017 PC-0033-2017Health Institute Carlos III (ISCIII) DOC_01682 CD18/0012

Deep Phenotypic Characterisation of CTCs by Combination of Microfluidic Isolation (IsoFlux) and Imaging Flow Cytometry (ImageStream)

Ines Aznar-Peralta holds a "Garantia Juvenil" fellowship (contract number 8040), and M. Carmen Garrido-Navas has a postdoctoral fellowship funded by the Ministry of Economy, Competitiveness, Enterprises and Universities (DOC_01682).The isolation of circulating tumour cells (CTCs) in colorectal cancer (CRC) mostly relies on the expression of epithelial markers such as EpCAM, and phenotypic characterisation is usually performed under fluorescence microscopy with only one or two additional markers. This limits the ability to detect different CTC subpopulations based on multiple markers. The aim of this work was to develop a novel protocol combining two platforms (IsoFluxTM and ImageStream®X) to improve CTC evaluation. Cancer cell lines and peripheral blood from healthy donors were used to evaluate the efficiency of each platform independently and in combination. Peripheral blood was extracted from 16 early CRC patients (before loco-regional surgery) to demonstrate the suitability of the protocol for CTC assessment. Additionally, peripheral blood was extracted from nine patients one month after surgery to validate the utility of our protocol for identifying CTC subpopulation changes over time. Results: Our protocol had a mean recovery efficiency of 69.5% and a limit of detection of at least four cells per millilitre. We developed an analysis method to reduce noise from magnetic beads used for CTC isolation. CTCs were isolated from CRC patients with a median of 37 CTCs (IQ 13.0–85.5) at baseline. CTCs from CRC patients were significantly (p < 0.0001) larger than cytokeratin (CK)-negative cells, and patients were stratified into two groups based on BRAFV600E and PD-L1 expression on CK-positive cells. The changes observed over time included not only the number of CTCs but also their distribution into four different subpopulations defined according to BRAFV600E and PD-L1 positivity. We developed a novel protocol for semi-automatic CTC isolation and phenotypic characterisation by combining two platforms. Assessment of CTCs from early CRC patients using our protocol allowed the identification of two clusters of patients with changing phenotypes over time."Garantia Juvenil" fellowship 8040Ministry of Economy, Competitiveness, Enterprises and Universities DOC_0168

Hepatocellular carcinoma risk-stratification based on ASGR1 in circulating epithelial cells for cancer interception

Purpose: Lack of diagnostic and prognostic biomarkers in hepatocellular carcinoma impedes stratifying patients based on their risk of developing cancer. The aim of this study was to evaluate phenotypic and genetic heterogeneity of circulating epithelial cells (CECs) based on asialoglycoprotein receptor 1 (ASGR1) and miR-122-5p expression as potential diagnostic and prognostic tools in patients with hepatocellular carcinoma (HCC) and liver cirrhosis (LC). Methods: Peripheral blood samples were extracted from LC and HCC patients at different disease stages. CECs were isolated using positive immunomagnetic selection. Genetic and phenotypic characterization was validated by double immunocytochemistry for cytokeratin (CK) and ASGR1 or by in situ hybridization with miR-122-5p and CECs were visualized by confocal microscopy. Results: The presence of CECs increased HCC risk by 2.58-fold, however, this was only significant for patients with previous LC (p = 0.028) and not for those without prior LC (p = 0.23). Furthermore, the number of CECs lacking ASGR1 expression correlated significantly with HCC incidence and absence of miR-122-5p expression (p = 0.014; r = 0.23). Finally, overall survival was significantly greater for patients at earlier cancer stages (p = 0.018), but this difference was only maintained in the group with the presence of CECs (p = 0.021) whereas progression-free survival was influenced by the absence of ASGR1 expression. Conclusion: Identification and characterization of CECs by ASGR1 and/or miR- 122-5p expression may be used as a risk-stratification tool in LC patients, as it was shown to be an independent prognostic and risk-stratification marker in LC and early disease stage HCC patients

The genetic ancestry of American Creole cattle inferred from uniparental and autosomal genetic markers

Cattle imported from the Iberian Peninsula spread throughout America in the early years of discovery and colonization to originate Creole breeds, which adapted to a wide diversity of environments and later received influences from other origins, including zebu cattle in more recent years. We analyzed uniparental genetic markers and autosomal microsatellites in DNA samples from 114 cattle breeds distributed worldwide, including 40 Creole breeds representing the whole American continent, and samples from the Iberian Peninsula, British islands, Continental Europe, Africa and American zebu. We show that Creole breeds differ considerably from each other, and most have their own identity or group with others from neighboring regions. Results with mtDNA indicate that T1c-lineages are rare in Iberia but common in Africa and are well represented in Creoles from Brazil and Colombia, lending support to a direct African influence on Creoles. This is reinforced by the sharing of a unique Y-haplotype between cattle from Mozambique and Creoles from Argentina. Autosomal microsatellites indicate that Creoles occupy an intermediate position between African and European breeds, and some Creoles show a clear Iberian signature. Our results confirm the mixed ancestry of American Creole cattle and the role that African cattle have played in their development

The genetic ancestry of american creole cattle inferred from uniparental and autosomal genetic markers.

Cattle imported from the Iberian Peninsula spread throughout America in the early years of discovery and colonization to originate Creole breeds, which adapted to a wide diversity of environments and later received influences from other origins, including zebu cattle in more recent years. We analyzed uniparental genetic markers and autosomal microsatellites in DNA samples from 114 cattle breeds distributed worldwide, including 40 Creole breeds representing the whole American continent, and samples from the Iberian Peninsula, British islands, Continental Europe, Africa and American zebu. We show that Creole breeds differ considerably from each other, and most have their own identity or group with others from neighboring regions. Results with mtDNA indicate that T1c-lineages are rare in Iberia but common in Africa and are well represented in Creoles from Brazil and Colombia, lending support to a direct African influence on Creoles. This is reinforced by the sharing of a unique Y-haplotype between cattle from Mozambique and Creoles from Argentina. Autosomal microsatellites indicate that Creoles occupy an intermediate position between African and European breeds, and some Creoles show a clear Iberian signature. Our results confirm the mixed ancestry of American Creole cattle and the role that African cattle have played in their development

IN VITRO COMPARATIVE STUDY OF GOMPOSITES’ COMPRESSIVE RESISTANCE FOR POSTERIOR SECTOR ACCORDING TO THEIR THICKNESS

Objetivo: Comparar el comportamiento In vitro de la resinas de tipo condensable Filtek P60 (3M ESPE), Surefil (Dentsply), Tetric N-Ceram (Ivoclar Vivadent) al ser sometidas a fuerzas compresivas.Materiales y métodos: Se realizó un estudio experimental In vitro con una muestra de cinco objetos de prueba desde 1 mm hasta 5 mm de espesor x 4 mm de diámetro. El total lo constituyeron 25 especímenes por cada resina condensable a evaluar. De esta manera, se evaluaron 75 objetos de prueba. Éstos fueron sometidos al test de compresión por medio de la máquina de ensayo universal Shimadzu Autograph AG-i 250.Resultados: Se obtuvieron en promedio 228,9 ± 78,7 MPa, 210,6 ± 74,9 MPa y 190,7 ± 71,7 MPa de resistencia a la compresión para las resinas Filtek P60 (3M ESPE), Tetric N Ceram (Ivoclar Vivadent) y SureFil (Dentsply), respectivamente, sin diferencias estadísticamente significativas entre ellas. Por otro lado, se observó que, según la altura de la resina, la máxima resistencia medida fue 294,5 ± 71,7 MPa para la de 1 mm y la más baja fue para la de 4mm de altura con un promedio de 153,8 ± 36,6 MPa.Conclusión: La resina de mayor resistencia a la compresión fue la Filtek P60 (3M ESPE) seguida de la Tetric N Ceram (Ivoclar Vivadent) y, por último, de la SureFil (Dentsply), aunque no se presentaron diferencias estadísticamente significativas. La probeta de mayor resistencia a la compresión con respecto al espesor fue la de 1 mm, seguida por las de 3, 2, 5 y 4 mm.[Bayona AP, Duarte L, Jiménez KY, Díaz JG. Estudio comparativo In vitro de la resistencia a la compresión de resinas para el sector posterior de acuerdo con su espesor. Ustasalud 2010; 9: 67 - 74]Objective: To compare the In vitro behavior of packable composites Filtek P60 (3M ESPE), Surefil (Dentsply), Tetric N-Ceram (Ivoclar Vivadent), when subjected to compressive strength.Methods: An experimental In vitro study was done in samples of 4 mm in diameter coupons ranging from 1 mm to 5 mm thick, for a total of 25 specimens for each evaluated packable resin. The sample size was 75 coupons. These were subjected to a compression test through a Shimadzu Autograph AG-i 250 universal testing machine.Results: Obtained average compression strength values were: 228,9 ± 78,7 MPa, 210,6 ± 74,9 MPa and 190,7± 71,7 MPa for composites Filtefi P60 (3M ESPE), Tetric N Ceram (Ivoclar Vivadent) and SureFil (Dentsply) respectively, without significant statistic differences between them. On the other hand, it was observed that, according to the resin thickness, the maximum resistance measured was 294,5 ± 71,7 MPa for the 1 mm high sample and the lowest was for 4 mm one with an average of 153,8 ± 36,6 MPa.Conclusions: In the experimental tests the composite with the highest compression strength was Filtek P60 (3M ESPE) followed by Tetric N Ceram (Ivoclar Vivadent) and at last SureFil (Dentsply), although no significant sadistic differences were evident. The sample with the highest compression strength, according to the height, was the 1 mm one, followed by the 3, 2, 5, and 4 mm ones

Evaluation of congenital and acquired heart diseases in a Spanish cohort of adults with Down syndrome

Abstract To describe congenital and acquired heart diseases in a Spanish cohort of adults with Down syndrome (DS), which could inform potential health recommendations for this population. Cross-sectional, observational study of adults with DS evaluated consecutively at a tertiary care, outpatient center between January 1 and December 31, 2019. The study population comprised 937 patients (51.8% men; median [IQR] age, 42 [18] years). An echocardiogram was available in the clinical chart of 420 patients (44.8%). The diagnosis of any form of heart disease was confirmed in 211 patients (22.5%): 101 (10.8%) had congenital heart defects, 80 (8.5%) simultaneous congenital and valvular heart diseases, and 30 (3.2%) isolated valvular heart disease. 111 patients (52.6% of those with congenital or valvular heart disease) had received corrective cardiac surgery. A total of 65 individuals were receiving medical management alone (30.8%), while 35 did not require any treatment because their cardiac disease was mild (16.6%). We found a high overall prevalence of heart disease in patients with DS, higher than previously reported for the pediatric population. Management of cardiovascular disease in adults with DS differs from that of the general population and should include universal echocardiography-based screening

The Polemic Diagnostic Role of TP53 Mutations in Liquid Biopsies from Breast, Colon and Lung Cancers

Simple Summary: Most solid tumors share mutations in TP53 that is thus considered one of the main cancer driver genes. Mutations in TP53 occur very early during tumor development, so their identification helps in diagnosing cancer. Furthermore, knowing in advance the TP53 mutation status might help guiding targeted treatments against this gene. However, this analysis is mainly performed in tissue samples, that is, solid biopsies, being an invasive technique. Contrarily, liquid biopsies, consisting of the analysis of blood samples, are non-invasive, can be performed repeatedly, helping in monitoring the patient evolution, and might be useful in early stages when the tumor is not yet detected by other technologies. Here, we review the main studies conducted on two types of liquid biopsies: circulating tumor cells and cell-free DNA.We discuss the main findings regarding TP53 mutation analysis, the clinical utility of this information and some controversies arising from the study of liquid biopsies compared to tissue samples, and we finish by suggesting future directions within this field. Abstract: Being minimally invasive and thus allowing repeated measures over time, liquid biopsies are taking over traditional solid biopsies in certain circumstances such as those for unreachable tumors, very early stages or treatment monitoring. However, regarding TP53 mutation status analysis, liquid biopsies have not yet substituted tissue samples, mainly due to the lack of concordance between the two types of biopsies. This needs to be examined in a study-dependent manner, taking into account the particular type of liquid biopsy analyzed, that is, circulating tumor cells (CTCs) or cell-free DNA (cfDNA), its involvement in the tumor biology and evolution and, finally, the technology used to analyze each biopsy type. Here, we review the main studies analyzing TP53 mutations in either CTCs or cfDNA in the three more prevalent solid tumors: breast, colon and lung cancers. We evaluate the correlation for mutation status between liquid biopsies and tumor tissue, suggesting possible sources of discrepancies, as well as evaluating the clinical utility of using liquid biopsies for the analysis of TP53 mutation status and the future actions that need to be undertaken to make liquid biopsy analysis a reality for the evaluation of TP53 mutations

Programa de Prevención de drogodependencias

La finalidad del proyecto es mejorar las conductas relacionadas con la salud y configurar en el alumnado un determinado estilo de vida. Los objetivos son: crear hábitos saludables desde la infancia, conseguir técnicas y estrategias para lograr conductas positivas, conocer y resolver problemas y valorar y conocer el cuerpo y sus limitaciones. Se describen los objetivos generales y específicos para las etapas y ciclos de Infantil, Primaria y Secundaria y los contenidos, actividades, metodología y evaluación para cada una de las áreas. La evaluación del proyecto tiene en cuenta tres aspectos: el profesorado, el contexto en que se desarrolla y los alumnos. Incluye, además, indicadores y criterios de evaluación.Madrid (Comunidad Autónoma). Consejería de Educación y Cultura. Ministerio de Educación y Cultura. Ayuntamiento de MadridMadridMadrid (Comunidad Autónoma). Subdirección General de Formación del Profesorado. CRIF Las Acacias; General Ricardos 179 - 28025 Madrid; Tel. + 34915250893ES

Coeducación en Educación Infantil y Primaria

Este proyecto intenta desarrollar actitudes coeducativas en todos los ámbitos de la vida escolar. Los objetivos son realizar una reflexión sobre la práctica docente cotidiana en relación con los posibles tratos sexistas discriminatorios y los mecanismos para detectarlos, así como las estrategias de actuación en Educación Infantil y Primaria. La metodología se basa en el diseño y desarrollo de unidades didácticas aprovechando materiales del MEC, del Instituto de la Mujer, y del propio centro así como la organización de unas Jornadas de coeducación donde se hace partícipe a las familias. La evaluación es continua y se utilizan encuestas, debates y sesiones de evaluación. La valoración es positiva en general, aunque falta contrastar la opinión de los alumnos-as más pequeños..Madrid (Comunidad Autónoma). Consejería de Educación y CulturaMadridMadrid (Comunidad Autónoma). Subdirección General de Formación del Profesorado. CRIF Las Acacias; General Ricardos 179 - 28025 Madrid; Tel. + 34915250893ES