Arabidopsis leucine-rich repeat malectin receptor-like kinases regulate pollen-stigma interactions.

Flowering plants contain tightly controlled pollen-pistil interactions required for promoting intraspecific fertilization and preventing interspecific hybridizations. In Arabidopsis (Arabidopsis thaliana), several receptor kinases (RKs) are known to regulate the later stages of intraspecific pollen tube growth and ovular reception in the pistil, but less is known about RK regulation of the earlier stages. The Arabidopsis RECEPTOR-LIKE KINASE IN FLOWERS1 (RKF1)/RKF1-LIKE (RKFL)1-3 cluster of four Leucine-Rich Repeat Malectin (LRR-MAL) RKs was previously found to function in the stigma to promote intraspecific pollen hydration. Here, we tested additional combinations of up to seven Arabidopsis LRR-MAL RK knockout mutants including RKF1, RKFL1-3, LysM RLK1-INTERACTING KINASE1, REMORIN-INTERACTING RECEPTOR1 and NEMATODE-INDUCED LRR-RLK2. These LRR-MAL RKs were discovered to function in the female stigma to support intraspecific Arabidopsis pollen tube growth and to establish a pre-zygotic interspecific barrier against Capsella rubella pollen. Thus, this study uncovered additional biological functions for this poorly understood group of RKs in regulating the early stages of Arabidopsis sexual reproduction.

Traumatismos en neonatos que acuden al departamento de emergencias pediátricas: frecuencia, mecanismos y formas de presentación

Introduccion: La Organización Mundial de la Salud (OMS) estima que aproximadamente 100 niños mueren cada hora a causa de lesiones traumáticas. Objetivo: Describir la frecuencia, mecanismos y tipos de traumatismos en los neonatos en el departamento de emergencias pediátricas de un hospital. Materiales y métodos: Estudio observacional, descriptivo, transversal, ambispectivo. Se incluyeron neonatos con diagnóstico de traumatismo que acudieron al departamento de emergencias pediátricas de un hospital desde enero del 2015 a diciembre del 2019. Variables: edad, sexo, procedencia, peso de nacimiento, edad gestacional, tipo de parto, mecanismo y tipo de traumatismo y evolución, Los datos se analizaron en SPSS. El protocolo fue aprobado por el comité de ética. Resultados: Fueron incluidos 90 neonatos, la frecuencia de traumatismo fue del 1,4%, la media de la edad fue de 14,6 ±7,7 días. El 92% nacieron por parto vaginal ,27% macrosómicos. El mecanismo del trauma fue obstétrico en 75,6%, accidentes en la casa 23,3 %y 1 caso de accidente de tránsito. Los tipos de lesiones fueron fracturas de huesos largos, en 47,8%, lesión del plexo braquial 15,5% y traumatismo cráneo encefálico 13,33%. Fueron hospitalizados el 10%. Conclusiones: La frecuencia de traumatismo neonatal en la urgencia pediátrica fue del 1,4%. La edad media fue 14,6 ±7,7dias. El 75,6% fue de origen obstétrico y 23,3% accidentes en la casa y 1 caso de accidente de tránsito. Los tipos de lesiones fueron fracturas de huesos largos, 47,8%, lesión del plexo braquial 15,5% y 13,3% traumatismo cráneo encefálico 13,3%.

Introduction: The World Health Organization (WHO) estimates that approximately 100 children die every hour from traumatic injuries. Objective: To describe the frequency, mechanisms and types of trauma in neonates in the pediatric emergency department of a hospital. Materials and methods: This was an observational, descriptive, transversal, and ambispective study. Neonates with a diagnosis of trauma who presented to the pediatric emergency department of a hospital from January 2015 to December 2019 were included. Variables: age, sex, town of origin, birth weight, gestational age, type of delivery, mechanism and type of trauma and evolution, Data were analyzed in SPSS. The protocol was approved by the ethics committee. Results: 90 neonates were included, the frequency of trauma was 1.4%, the mean age was 14.6 ±7.7 days. 92% were born by vaginal delivery, 27% were macrosomic at birth. The mechanism of trauma was obstetric in 75.6%, accidents at home in 23.3% and there was 1 case of a traffic accident. The types of injuries were long bone fractures, seen in 47.8%, brachial plexus injury in 15.5%, and head trauma in 13.33%. 10% were hospitalized. Conclusions: The frequency of neonatal trauma in the pediatric emergency was 1.4%. The mean age was 14.6 ±7.7 days. 75.6% were obstetric in origin and 23.3% were accidents at home and 1 case of a traffic accident. The types of injuries were long bone fractures in 47.8%, brachial plexus injury in 15.5%, and head trauma in 13.3%.

Gender identity and sexual orientation of people with autism spectrum disorder: a systematic review / Identidad de género y orientación sexual de las personas con Trastorno del Espectro del Autismo: una revisión sistemática

There has been growing interest about gender identity and sexual orientation in people with autism spectrum disorder. This systematic review analyses 18 studies conducted since 2016 that met the inclusion criteria. The aim was to gather evidence of gender identity, gender dysphoria, and sexual orientation in the ASD population. The results indicate an increased prevalence of non-conforming gender identity and gender dysphoria in people with ASD. There was also evidence of greater prevalence of non-heterosexual orientation in people with ASD than people without ASD. These results were particularly found in women with ASD. However, more studies are needed, especially about women, children and adolescents, to ensure that there are suitable support and resources to meet the needs of this population. (AU)

En los últimos años ha surgido un creciente interés en relación con la identidad de género y la orientación sexual de las personas con trastorno del espectro del autismo (TEA). La presente revisión sistemática analiza un total de 18 estudios, publicados a partir de 2016, con la finalidad de obtener evidencias acerca de la identidad y disforia de género, y la orientación sexual en la población con TEA. Los resultados indicaron que existe una mayor prevalencia de identidad de género no conforme y de disforia de género en la población con TEA. Se encontró una mayor prevalencia de orientación no heterosexual en las personas con TEA en comparación con la población sin TEA. Estos resultados se encuentran preferentemente en las mujeres con TEA. No obstante, es necesario disponer de más y mejores evidencias sobre esta temática, especialmente en mujeres, y en las etapas de la niñez y la adolescencia, con el fin de implementar apoyos y recursos adecuados para dar respuesta a las necesidades de estas personas. (AU)

Finding new Arabidopsis receptor kinases that regulate compatible pollen-pistil interactions.

Successful fertilization of a flowering plant requires tightly controlled cell-to-cell communication between the male pollen grain and the female pistil. Throughout Arabidopsis pollen-pistil interactions, ligand-receptor kinase signaling is utilized to mediate various checkpoints to promote compatible interactions. In Arabidopsis, the later stages of pollen tube growth, ovular guidance and reception in the pistil have been intensively studied, and thus the receptor kinases and the respective ligands in these stages are quite well understood. However, the components of the earlier stages, responsible for recognizing compatible pollen grains and pollen tubes in the upper reproductive tract are less clear. Recently, predicted receptor kinases have been implicated in the initial stages of regulating pollen hydration and supporting pollen tube growth through the upper regions of the reproductive tract in the pistil. The discovery of these additional signaling proteins at the earlier stages of pollen-pistil interactions has further elucidated the mechanisms that Arabidopsis employs to support compatible pollen. Despite these advances, many questions remain regarding their specific functions. Here, we review the roles of the different receptor kinases, integrate their proposed functions into a model covering all stages of pollen-pistil interactions, and discuss what remains elusive with regard to their functions, respective binding partners and signaling pathways.

The structural conformation of the tachykinin domain drives the anti-tumoural activity of an octopus peptide in melanoma BRAFV600E.

BACKGROUND AND PURPOSE: Over past decades, targeted therapies and immunotherapy have improved survival and reduced the morbidity of patients with BRAF-mutated melanoma. However, drug resistance and relapse hinder overall success. Therefore, there is an urgent need for novel compounds with therapeutic efficacy against BRAF-melanoma. This prompted us to investigate the antiproliferative profile of a tachykinin-peptide from the Octopus kaurna, Octpep-1 in melanoma. EXPERIMENTAL APPROACH: We evaluated the cytotoxicity of Octpep-1 by MTT assay. Mechanistic insights on viability and cellular damage caused by Octpep-1 were gained via flow cytometry and bioenergetics. Structural and pharmacological characterization was conducted by molecular modelling, molecular biology, CRISPR/Cas9 technology, high-throughput mRNA and calcium flux analysis. In vivo efficacy was validated in two independent xerograph animal models (mice and zebrafish). KEY RESULTS: Octpep-1 selectively reduced the proliferative capacity of human melanoma BRAFV600E -mutated cells with minimal effects on fibroblasts. In melanoma-treated cells, Octpep-1 increased ROS with unaltered mitochondrial membrane potential and promoted non-mitochondrial and mitochondrial respiration with inefficient ATP coupling. Molecular modelling revealed that the cytotoxicity of Octpep-1 depends upon the α-helix and polyproline conformation in the C-terminal region of the peptide. A truncated form of the C-terminal end of Octpep-1 displayed enhanced potency and efficacy against melanoma. Octpep-1 reduced the progression of tumours in xenograft melanoma mice and zebrafish. CONCLUSION AND IMPLICATIONS: We unravel the intrinsic anti-tumoural properties of a tachykinin peptide. This peptide mediates the selective cytotoxicity in BRAF-mutated melanoma in vitro and prevents tumour progression in vivo, providing a foundation for a therapy against melanoma.

Conservation of Zebrafish MicroRNA-145 and Its Role during Neural Crest Cell Development.

The neural crest is a multipotent cell population that develops from the dorsal neural fold of vertebrate embryos in order to migrate extensively and differentiate into a variety of tissues. A number of gene regulatory networks coordinating neural crest cell specification and differentiation have been extensively studied to date. Although several publications suggest a common role for microRNA-145 (miR-145) in molecular reprogramming for cell cycle regulation and/or cellular differentiation, little is known about its role during in vivo cranial neural crest development. By modifying miR-145 levels in zebrafish embryos, abnormal craniofacial development and aberrant pigmentation phenotypes were detected. By whole-mount in situ hybridization, changes in expression patterns of col2a1a and Sry-related HMG box (Sox) transcription factors sox9a and sox9b were observed in overexpressed miR-145 embryos. In agreement, zebrafish sox9b expression was downregulated by miR-145 overexpression. In silico and in vivo analysis of the sox9b 3'UTR revealed a conserved potential miR-145 binding site likely involved in its post-transcriptional regulation. Based on these findings, we speculate that miR-145 participates in the gene regulatory network governing zebrafish chondrocyte differentiation by controlling sox9b expression.

Séptima evaluación de test editados en España / Seventh review of test published in Spain

La Comisión de test del Consejo General de la Psicología del Colegio Oficial de Psicólogos lleva a cabo anualmente desde 2010 una evaluación de la calidad de los test que se publican en España. Como en las ediciones anteriores, el objetivo de este trabajo es describir el método y presentar los resultados de la séptima edición de evaluación de test, en la que ocho pruebas recientemente publicadas por cuatro casas editoriales (CEPE, EOS, PEARSON y TEA) fueron revisadas por un total de 16 expertos (i.e., dos revisores independientes por prueba) mediante la aplicación del Cuestionario de Evaluación de Test-Revisado (CET-R). De los resultados puede concluirse que, en términos generales, la calidad de los test evaluados es adecuada, destacando entre los puntos fuertes la calidad de las adaptaciones, las evidencias que proporcionan acerca de la consistencia interna, y la calidad de los baremos y la interpretación de sus puntuaciones. No obstante, se apuntan también algunas limitaciones y sugerencias de mejora

Every year since 2010, the Test Commission of the Spanish Psychological Association carries out a quality assessment of the tests published in Spain. As in previous editions, the aim of this paper is to describe the method and present the main results of the seventh test review, in which eight recently-published tests by four editorials (CEPE, EOS, Pearson, and TEA) were assessed by 16 experts (i.e. two independent reviewers for each test) through the application of the Test Review Questionnaire-Revised (CET-R). Results allow us to conclude that, in general terms, the quality of the assessed tests is adequate, highlighting as strong points the quality of the adaptations, the evidence on internal consistency, and the quality of standards and interpretation of scores. However, some limitations and suggestions for improvement are also noted

Do young people with asperger syndrome or intellectual disability use social media and are they cyberbullied or cyberbullies in the same way as their peers? / ¿Las personas jóvenes con síndrome de Asperger o discapacidad intelectual utilizan las redes sociales y son ciberacosados o ciberacosadores como sus padres?

Background: The aim of the present study is to explore how youth with intellectual disability or Asperger syndrome use new technologies and social media in comparison with their peers without disability. Method: Participants were 181 adolescents with a mean age of 16 years old (SD=3.7) who completed the "Cyber-aggression Questionnaire for Adolescents", the "Cyber-victimization Questionnaire for Adolescents" and a questionnaire on social media and new technologies. Results: Percentages of use of new technologies (61% tablets, 93% computers, 97% mobiles) are similar among groups but adolescents with Asperger syndrome or intellectual disability have been using them since more recent times and their uses are more limited. They also use social media less; the group with Asperger syndrome uses them the least. There are no significant differences in the frequency of cyberbullying. Conclusion: Despite using social media less, the frequency of cyberbullying is similar to their peers. Besides, the observed prevalence of cyberbullying is higher than that mentioned in previous studies in which informants were not the youths themselves

Antecedentes: este estudio se centra en explorar el uso que hace la juventud con discapacidad intelectual o síndrome de Asperger de las nuevas tecnologías y las redes sociales en comparación con sus pares sin discapacidad. Método: los participantes fueron 181 jóvenes con una edad media de 16 años (DT= 3.7 años), quienes cumplimentaron el "Cyber-aggression Questionnaire for Adolescents", el "Cyber-victimization Questionnaire for Adolescents" y un cuestionario sobre el uso de redes sociales y nuevas tecnologías. Resultados: los porcentajes de uso de las nuevas tecnologías (61% tablet, 93% ordenador y 97% móvil) son similares entre los grupos, pero los jóvenes con síndrome de Asperger y discapacidad intelectual las usan desde hace menos tiempo y hacen un uso más limitado de ellas. También usan menos las redes sociales, siendo el grupo con síndrome de Asperger el que menos las usa. No existen diferencias significativas en la frecuencia de ciberbullying. Conclusión: a pesar de que utilizan menos las redes sociales, la prevalencia de ciberbullying es similar a la de sus iguales. Además, la prevalencia observada en todos los grupos es más elevada que la apuntada en otros estudios en la que los informantes no suelen ser los propios jóvenes

Do young people with Asperger syndrome or intellectual disability use social media and are they cyberbullied or cyberbullies in the same way as their peers?

BACKGROUND: The aim of the present study is to explore how youth with intellectual disability or Asperger syndrome use new technologies and social media in comparison with their peers without disability. METHOD: Participants were 181 adolescents with a mean age of 16 years old (SD=3.7) who completed the "Cyber-aggression Questionnaire for Adolescents", the "Cyber-victimization Questionnaire for Adolescents" and a questionnaire on social media and new technologies. RESULTS: Percentages of use of new technologies (61% tablets, 93% computers, 97% mobiles) are similar among groups but adolescents with Asperger syndrome or intellectual disability have been using them since more recent times and their uses are more limited. They also use social media less; the group with Asperger syndrome uses them the least. There are no significant differences in the frequency of cyberbullying. CONCLUSION: Despite using social media less, the frequency of cyberbullying is similar to their peers. Besides, the observed prevalence of cyberbullying is higher than that mentioned in previous studies in which informants were not the youths themselves.

Evaluating the characteristics of the grieving process in people with intellectual disability.

BACKGROUND: The aim of this study was to examine the characteristics associated with the grieving process among a population with intellectual disability and the influence of particular variables. MATERIALS AND METHODS: The sample was composed of 380 participants with intellectual disability, on whose behalf 149 professionals completed a 20-item questionnaire with four Likert-type answer options, developed to evaluate the grieving process: Inventory of Grief and Coping Strategies in Intellectual Disability (IGCS-ID). RESULTS: The IGCS-ID shows adequate levels of reliability. It covers three dimensions: understanding of the concept of death, coping with the loss and post-bereavement reactions. The level of intellectual disability, the time elapsed since the loss and the residential setting gave rise to significant differences in the three dimensions based on the participants. CONCLUSION: An assessment of the grieving process would help to put in place effective resources to help people with intellectual disability overcome the loss and cope with the changes that it brings.

A prospective study of childhood neurocognitive functioning in schizophrenic patients and their siblings.

OBJECTIVE: This study evaluated childhood cognitive functioning in individuals who later developed schizophrenia and in their unaffected siblings. METHOD: Through the National Collaborative Perinatal Project, seven subtests of the Wechsler Intelligence Scale for Children were administered at age 7 to 32 individuals who developed schizophrenia in adulthood, 25 of their nonschizophrenic siblings, and 201 demographically similar nonpsychiatric comparison subjects. Mixed model analysis was used to examine between-group differences in standardized scores on the subtests. RESULTS: The probands and unaffected siblings had lower scores for picture arrangement, vocabulary, and coding than the comparison subjects but differed from each other only on the coding subtest. CONCLUSIONS: Children who later developed schizophrenia and their siblings showed similar patterns of deficits involving spatial reasoning, verbal knowledge, perceptual-motor speed, and speeded processes of working memory. However, the probands exhibited more severe deficits in perceptual-motor speed and speeded processes of working memory than their unaffected siblings.