Enhanced Electrocatalysis on Copper Nanostructures: Role of the Oxidation State in Sulfite Oxidation.

The influence of surface morphology and the oxidation state on the electrocatalytic activity of nanostructured electrodes is well recognized, yet disentangling their individual roles in specific reactions remains challenging. Here, we investigated the electrooxidation of sulfite ions in an alkaline environment using cyclic voltammetry on copper oxide nanostructured electrodes with different oxidation states and morphologies but with similar active areas. To this aim, we synthesized nanostructured Cu films made of nanoparticles or nanorods on top of glassy carbon electrodes. Our findings showed an enhanced sensitivity and a lower detection threshold when utilizing Cu(I) over Cu(II). Density functional theory-based thermochemical analysis revealed the underlying oxidation mechanism, indicating that while the energy gain associated with the process is comparable for both oxide surfaces, the desorption energy barrier for the resulting sulfate molecules is three times higher on Cu(II). This becomes the limiting step of the reaction kinetics and diminishes the overall electrooxidation efficiency. Our proposed mechanism relies on the tautomerization of hydroxyl groups confined on the surface of Cu-based electrodes. This mechanism might be applicable to electrochemical reactions involving other sulfur compounds that hold technological significance.

Identification and expression profiling of microRNAs in leaf tissues of Foeniculum vulgare Mill. under salinity stress.

Foeniculum vulgare Mill. commonly known as fennel, is a globally recognized aromatic medicinal plant and culinary herb with widespread popularity due to its antimicrobial, antioxidant, carminative, and diuretic properties, among others. Although the phenotypic effects of salinity stress have been previously explored in fennel, the molecular mechanisms underlying responses to elevated salinity in this plant remain elusive. MicroRNAs (miRNAs) are tiny, endogenous, and extensively conserved non-coding RNAs (ncRNAs) typically ranging from 20 to 24 nucleotides (nt) in length that play a major role in a myriad of biological functions. In fact, a number of miRNAs have been extensively associated with responses to abiotic stress in plants. Consequently, employing computational methodologies and rigorous filtering criteria, 40 putative miRNAs belonging to 25 different families were characterized from fennel in this study. Subsequently, employing the psRNATarget tool, a total of 67 different candidate target transcripts for the characterized fennel miRNAs were predicted. Additionally, the expression patterns of six selected fennel miRNAs (i.e. fvu-miR156a, fvu-miR162a-3p, fvu-miR166a-3p, fvu-miR167a-5p, fvu-miR171a-3p, and fvu-miR408-3p) were analyzed under salinity stress conditions via qPCR. This article holds notable significance as it identifies not only 40 putative miRNAs in fennel, a non-model plant, but also pioneers the analysis of their expression under salinity stress conditions.

A Retrospective Comparison of Phaco-tube vs. Phaco-trabeculectomy in Glaucoma Patients.

PURPOSE: To compare surgical outcomes of phacoemulsification combined with Baerveldt implantation (phaco-tube) or trabeculectomy with mitomycin-C (MMC) (phaco-trab) in patients without prior incisional ocular surgery. DESIGN: Single-center, retrospective, comparative case series. PARTICIPANTS: A total of 90 patients underwent surgical treatment, including 45 patients in the phaco-tube group and 45 patients in the phaco-trab group. METHODS: Eligible patients were identified using current procedural terminology (CPT) codes, and their medical records were retrospectively reviewed. MAIN OUTCOME MEASURES: The primary outcome measure was the rate of surgical failure (IOP ≤5 mmHg or >21 mmHg or reduced <20% from baseline on 2 consecutive study visits after 3 months, reoperations for glaucoma, or experienced loss of light perception vision). Patients who had successful surgical outcomes without use of glaucoma medications were classified as complete successes, while those who used glaucoma medications were classified as qualified successes. Secondary outcome measures were visual acuity (VA), visual field mean deviation (VFMD), intraocular pressure (IOP), glaucoma medication use, and complications. RESULTS: The cumulative probability of failure was 6.7% in the phaco-tube group and 32.8% in the phaco-trab group after 3 years (P = 0.005; Restricted Mean Survival Time = 5.9 months, 95% CI = 1.4-10.4 months). The IOP was 13.1 ± 3.4 mmHg in the phaco-tube group and 13.3 ± 6.2 mmHg in the phaco-trab group at 3 years (P = 0.90), and the number of glaucoma medications was 2.6 ± 1.5 in the phaco-tube group and 1.7 ± 1.3 in the phaco-trab group (P = 0.015). The logarithm of the minimum angle of resolution VA was 0.39 ± 0.58 in the phaco-tube group and 0.43 ± 0.73 in the phaco-trab group at 3 years (P = 0.82), and VFMD was -18.3 ± 9.0 dB in the phaco-tube group and -14.1 ± 7.0 dB in the phaco-trab group (P = 0.16). Postoperative complications developed in 21 patients (47%) in the phaco-tube group and 15 patients (33%) in the phaco-trab group (P = 0.28). CONCLUSIONS: Phaco-tubes had a significantly lower rate of surgical failure compared to phaco-trabs after 3 years of follow-up. However, phaco-trabs used significantly fewer glaucoma medications at multiple postoperative timepoints and had a higher proportion of complete success. FINANCIAL DISCLOSURE(S): The author(s) have no proprietary or commercial interest in any materials discussed in this article.

Use of Tirzepatide in Adults with Type 2 Diabetes Mellitus: Scientific Evidence and Practical Aspects.

Tirzepatide is a novel antidiabetic medication a single-molecule, agonist to the glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptors. It is approved in the USA and EU for the treatment of type 2 diabetes mellitus (T2DM) and obesity. Due to the potential novelty represented by incorporating tirzepatide to clinical practice, we aim to review practical aspects of tirzepatide use in T2DM and the supporting scientific evidence. A group of ten endocrinologists involved as investigators in the phase 3 SURPASS clinical trial program followed a nominal group technique, a qualitative research methodology designed as a semi-structured group discussion to reach a consensus on the selection of a set of practical aspects. The scientific evidence for tirzepatide has been reviewed with respect to a number of patients' clinical profiles and care goals. Information of interest related to adverse events, special warnings and precautions, and other considerations for tirzepatide use has been included. Finally, information provided to the patients has been summarized. The practical aspects reported herein may be helpful in guiding physicians in the use of tirzepatide and contribute to optimizing the management of T2DM.

Sink-source connectivity for restocking of Pinna nobilis in the western Mediterranean Sea.

The critically endangered endemic bivalve Pinna nobilis from the Mediterranean Sea suffered a sudden population decline after a mass mortality event in early autumn 2016. Conservation efforts aimed at preventing extinction included safeguarding resistant individuals and implementing a breeding plan to contribute to the repopulation of the species. This study utilized a model combining Lagrangian dispersion and connectivity analyses to pinpoint optimal restocking sites in the Western Mediterranean. Our approach allowed to identify locations capable of sustaining and generating larvae for broader repopulation in key areas of the Western Mediterranean Sea prior to the mass mortality event. Six important repopulation locations from Murcia, Valencia and Balearic Islands were selected for reintroduction efforts. The results obtained in this study show how the network could be self-sufficient and able to self-replenish itself of recruits. Overall, our work can be used to direct the reintroduction of resistant animals in the Western Mediterranean Sea.

Chaotic vortex-induced rotation of an elliptical cylinder.

Non-linear oscillations of an elliptical cylinder, which can rotate about an axis that passes through its symmetry axle due to a torsional spring and hydrodynamic torque produced by the flow of a Newtonian fluid, were analyzed in terms of a single parameter that compares vortex shedding frequency with the torsional spring's natural frequency. The governing equations for the flow coupled with a rigid body with one degree of freedom were solved numerically using the lattice-Boltzmann method. The Reynolds number used was Re=200, which, in the absence of torsional spring, produces chaotic oscillations of the elliptical cylinder. When the torsional spring is included, we identified three branches separated by transition regions when stiffness of the restorative torque changes, as in the case of vortex-induced vibrations. However, in this case, several regions presenting chaotic dynamics were identified. Two regions with stable limit cycles were found when both torques synchronized and when stiffness of the torsional spring is big enough so that the ellipse's oscillation is small.

A serverless computing architecture for Martian aurora detection with the Emirates Mars Mission.

Remote sensing technologies are experiencing a surge in adoption for monitoring Earth's environment, demanding more efficient and scalable methods for image analysis. This paper presents a new approach for the Emirates Mars Mission (Hope probe); A serverless computing architecture designed to analyze images of Martian auroras, a key aspect in understanding the Martian atmosphere. Harnessing the power of OpenCV and machine learning algorithms, our architecture offers image classification, object detection, and segmentation in a swift and cost-effective manner. Leveraging the scalability and elasticity of cloud computing, this innovative system is capable of managing high volumes of image data, adapting to fluctuating workloads. This technology, applied to the study of Martian auroras within the HOPE Mission, not only solves a complex problem but also paves the way for future applications in the broad field of remote sensing.

Exploring the Therapeutic Significance of microRNAs and lncRNAs in Kidney Diseases.

MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are two crucial classes of transcripts that belong to the major group of non-coding RNAs (ncRNAs). These RNA molecules have significant influence over diverse molecular processes due to their crucial role as regulators of gene expression. However, the dysregulated expression of these ncRNAs constitutes a fundamental factor in the etiology and progression of a wide variety of multifaceted human diseases, including kidney diseases. In this context, over the past years, compelling evidence has shown that miRNAs and lncRNAs could be prospective targets for the development of next-generation drugs against kidney diseases as they participate in a number of disease-associated processes, such as podocyte and nephron death, renal fibrosis, inflammation, transition from acute kidney injury to chronic kidney disease, renal vascular changes, sepsis, pyroptosis, and apoptosis. Hence, in this current review, we critically analyze the recent findings concerning the therapeutic inferences of miRNAs and lncRNAs in the pathophysiological context of kidney diseases. Additionally, with the aim of driving advances in the formulation of ncRNA-based drugs tailored for the management of kidney diseases, we discuss some of the key challenges and future prospects that should be addressed in forthcoming investigations.

Sex hormones and the total testosterone:estradiol ratio as predictors of severe acute respiratory syndrome coronavirus 2 infection in hospitalized men.

BACKGROUND: The predictive ability of the early determination of sex steroids and the total testosterone:estradiol ratio for the risk of severe coronavirus disease 2019 or the potential existence of a biological gradient in this relationship has not been evaluated. OBJECTIVES: To assess the relationship of sex steroid levels and the total testosterone:estradiol ratio with the risk of severe acute respiratory syndrome coronavirus 2 infection in men, defined as the need for intensive care unit admission or death, and the predictive ability of each biomarker. MATERIALS AND METHODS: This was a prospective observational study. We included all consecutive adult men with severe acute respiratory syndrome coronavirus 2 infections in a single center admitted to a general hospital ward or to the intensive care unit. Sex steroids were evaluated at the centralized laboratory of our hospital. RESULTS: We recruited 98 patients, 54 (55.1%) of whom developed severe coronavirus disease in 2019. Compared to patients with nonsevere coronavirus disease 2019, patients with severe coronavirus disease 2019 had significantly lower serum levels of total testosterone (111 ± 89 vs. 191 ± 143 ng/dL; p < 0.001), dehydroepiandrosterone (1.69 ± 1.26 vs. 2.96 ± 2.64 ng/mL; p < 0.001), and dehydroepiandrosterone sulfate (91.72 ± 76.20 vs. 134.28 ± 98.261 µg/dL; p = 0.009), significantly higher levels of estradiol (64.61 ± 59.35 vs. 33.78 ± 13.78 pg/mL; p = 0.001), and significantly lower total testosterone:estradiol ratio (0.28 ± 0.31 vs. 0.70 ± 0.75; p < 0.001). The lower the serum level of androgen and the lower the total testosterone:estradiol ratio values, the higher the likelihood of developing severe coronavirus disease 2019, with the linear trend in the adjusted analyses being statistically significant for all parameters except for androstenedione (p = 0.064). In the receiver operating characteristic analysis, better predictive performance was shown by the total testosterone:estradiol ratio, with an area under the curve of 0.77 (95% confidence interval 0.68-0.87; p < 0.001). DISCUSSION AND CONCLUSION: Our results suggest that men with severe acute respiratory syndrome coronavirus 2 infection, decreased androgen levels and increased estradiol levels have a higher likelihood of developing an unfavorable outcome. The total testosterone:estradiol ratio showed the best predictive ability.

Genomic and phenotypic analysis of invasive Streptococcus suis isolated in Spain reveals genetic diversification and associated virulence traits.

Streptococcus suis is a zoonotic pathogen that causes a major health problem in the pig production industry worldwide. Spain is one of the largest pig producers in the world. This work aimed to investigate the genetic and phenotypic features of invasive S. suis isolates recovered in Spain. A panel of 156 clinical isolates recovered from 13 Autonomous Communities, representing the major pig producers, were analysed. MLST and serotyping analysis revealed that most isolates (61.6%) were assigned to ST1 (26.3%), ST123 (18.6%), ST29 (9.6%), and ST3 (7.1%). Interestingly, 34 new STs were identified, indicating the emergence of novel genetic lineages. Serotypes 9 (27.6%) and 1 (21.8%) prevailed, followed by serotypes 7 (12.8%) and 2 (12.2%). Analysis of 13 virulence-associated genes showed significant associations between ST, serotype, virulence patterns, and clinical features, evidencing particular virulence traits associated with genetic clusters. The pangenome was generated, and the core genome was distributed in 7 Bayesian groups where each group included a variable set of over- and under-represented genes of different categories. The study provides comprehensive data and knowledge to improve the design of new vaccines, antimicrobial treatments, and bacterial typing approaches.

Pesticides luminescent sensing by a Tb3+-doped Zn metal-organic framework with selectivity towards parathion.

Organophosphorus pesticides (OPPs) such as parathion have extensive uses in agriculture and household applications. Chronic exposure to these pesticides can cause severe health and environmental issues. Therefore, a current ecological concern is associated with accumulating these noxious OPPs in food and water sources. In this work, a new Tb3+-doped Zn-LMOF (Zn-LMOF= (3D) {[Zn3(1,4 benzenedicarboxylate)3(EtOH)2]·(EtOH)0.6}∞) was synthesized by a solvent-free reaction between the Zn-LMOF and the salt TbCl3·6H2O using a high-speed ball milling. The Tb@Zn-LMOF was thoroughly characterized by multiple spectroscopic tools, including Scanning Electron Microscopy with Energy-Dispersive X-ray Spectroscopy, and studied in-depth as a luminescent sensor for a series of pesticides (parathion, malathion, methalaxil, carbofuran, iprodione, captan and glyphosate) in aqueous methanol. The Tb@Zn-LMOF is a long-lived green-emitting compound with luminescence originated by an efficient antenna effect from the excited energy levels of Zn-LMOF toward the 5D state of Tb3+ ions, as it is displayed by its strong emission bands at 488, 545, 585, and 620 nm and a lifetime of 1.01 ms upon excitation at 290 nm. Additions of pesticides to a neutral methanolic dispersion of Tb@Zn-LMOF modified its green emission intensity with a pronounced selectivity toward parathion within the micromolar concentration range. The detection limit for parathion was calculated to be 3.04 ± 0.2 µM for Tb@Zn-LMOF. Based on 31P NMR and mass spectrometry studies, it is attributed to the release of lanthanide ions from Tb@Zn-LMOF with the simultaneous formation of a Tb3+-parathion complex.

Design and Evaluation of a Sticky Attractant Trap for Intra-Domiciliary Surveillance of Aedes aegypti Populations in Mexico.

Surveillance consists of systematic data collection, analysis, and interpretation and is essential for planning and implementing control activities. The lack of success in the control and surveillance of the Ae. aegypti mosquito elsewhere demands the development of new accessible and effective strategies. This work aimed to develop and evaluate an adhesive lure trap for household indoor surveillance of Ae. aegypti. Based on a bibliographic review, four compounds that have significant attraction percentages for Ae. aegypti were considered. Our more effective blend was determined through preliminary bioassays using the high-throughput screening system (HITSS) and 90 × 90 cm mosquito cages. We designed a low-cost, pyramid-shaped, sticky cardboard trap to incorporate the selected blend. Semi-field 2 × 2 m cages and field tests were utilized to evaluate its effectiveness through mosquito capture percentages. In laboratory tests, blend number 2 presented an attraction percentage of 47.5 ± 4.8%; meanwhile, in semi-field cages, a 4-inch, 110 v powered fan was used to disperse the attractants, and then a similar capture percentage of 43.2 ± 4.0% was recorded. Results were recorded during the field evaluation of the at-house indoor environment and were compared with those recorded with the golden-standard BG-Sentinel trap, i.e., our prototype trapped an average of 6.0 ± 1.5 mosquitoes versus 10.0 ± 2.6. In most Latin American countries, there is a lack of formal and accessible strategies for monitoring adult populations of Ae. Aegypti; therefore, we must develop tools that reinforce entomological surveillance methods.

Safety of the modified posteromedial approach in complex ankle fractures: Comparative analysis versus posterolateral access.

INTRODUCTION: The aim of the study was to evaluate the safety of the modified posteromedial approach (MfPM) in the surgical management of complex ankle fractures in terms of local complications. METHODS: Retrospective multicenter review of a series of malleolar fractures surgically treated by posterior ankle approaches between 2016 and 2022. Two approaches were used. In the MfPM group patients were placed in a prone position and the incision was made 1 cm medially to the Achilles tendon. In the posterolateral access (PL) group patients were placed in a prone or lateral decubitus position and the incision was made between the lateral malleolus and the Achilles tendon. Complications evaluated were divided into wound complications, infections, neuritis, vascular alterations and others. RESULTS: 81 ankle fractures with a posterior malleolar fragment treated by open reduction and internal fixation were identified. 20 cases were approached through the MfPM approach and 61 through the PL access. The mean follow up was 18.60 months (range 4-78 months). In the MfPM group the local complication rate was 10% (2/10 patients), both corresponding to minor wound problems which required no surgical intervention. No infection or other neural or vascular complications were found. In the PL group a complication rate of 8,19% (5/61 patients) was found, all of them corresponding to minor wound problems which required no surgical intervention. No infection or other neural or vascular complications were found. There were no significant differences between the two approaches regarding postoperative local complications (z score 0.249 - P: 0.803). CONCLUSION: The MfPM approach is safe and may become as readily used as the PL due to the low incidence of postoperative local complications, especially in fractures with a large fragment and posteromedial extension in which greater access to the posterior pilon can facilitate instrumentation for anatomic reduction and fixation.

The applications of CRISPR/Cas-mediated microRNA and lncRNA editing in plant biology: shaping the future of plant non-coding RNA research.

MAIN CONCLUSION: CRISPR/Cas technology has greatly facilitated plant non-coding RNA (ncRNA) biology research, establishing itself as a promising tool for ncRNA functional characterization and ncRNA-mediated plant improvement. Throughout the last decade, the promising genome editing tool clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated proteins (Cas; CRISPR/Cas) has allowed unprecedented advances in the field of plant functional genomics and crop improvement. Even though CRISPR/Cas-mediated genome editing system has been widely used to elucidate the biological significance of a number of plant protein-coding genes, this technology has been barely applied in the functional analysis of those non-coding RNAs (ncRNAs) that modulate gene expression, such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs). Nevertheless, compelling findings indicate that CRISPR/Cas-based ncRNA editing has remarkable potential for deciphering the biological roles of ncRNAs in plants, as well as for plant breeding. For instance, it has been demonstrated that CRISPR/Cas tool could overcome the challenges associated with other approaches employed in functional genomic studies (e.g., incomplete knockdown and off-target activity). Thus, in this review article, we discuss the current status and progress of CRISPR/Cas-mediated ncRNA editing in plant science in order to provide novel prospects for further assessment and validation of the biological activities of plant ncRNAs and to enhance the development of ncRNA-centered protocols for crop improvement.

¿Qué es realmente eso a lo que llamamos contexto? Hacia un modelo de análisis sistemático del contexto / What Is it Really that we Call Context? Towards a Model for a Systematic Analysis of Context

En los modelos actuales de discapacidad se considera esencial el rol del contexto. Hasta la fecha no se han desarrollado modelos teóricos que permitan analizar de forma sistemática la influencia del contexto en la vida de las personas con discapacidad. En el artículo se explica el tratamiento recibido por el contexto en diferentes modelos de referencia. Se ofrece un modelo conceptual de análisis del contexto basado en categorías que permita entender mejor su influencia en la vida de las personas y facilite la transformación de las barreras que se afronten. (AU)

In current models of disability, the role of context is considered essential. To date, no theoretical models have been developed to systematically analyze the influence of context on the lives of people with disabilities. The article explains the treatment received by the context in different reference models. A conceptual model of context analysis based on categories is offered to better understand its influence on people’s lives and to facilitate the transformation of the barriers faced. (AU)

La enseñanza deportiva y el entrenamiento deportivo / Educação desportiva e formação desportiva / Sports education and sports training

RESUMEN El artículo surge de la necesidad de contextualizar la enseñanza deportiva y de establecer las características que la diferencian del entrenamiento deportivo a partir de la definición de sus componentes y del sistema de categorías pedagógicas, principios y regularidades que le son inherentes. Todo ello, para dar respuesta a la contradicción latente hoy en la formación inicial y continua del profesor deportivo, así como al modo de actuación y desempeño de sus funciones profesionales en correspondencia con las exigencias reales del contexto de la esfera de actuación (eslabón de base) donde está indicado su práctica profesional. El objetivo de la investigación es reflexionar acerca de los componentes, categorías y sistema de principios que caracterizan la enseñanza deportiva, diferenciándolos de los del entrenamiento deportivo. Se realizó una extensa revisión bibliográfica en repositorios nacionales y en las bases de datos de EBSCO HOST, Dialnet, SPORTDiscus y Google Scholar, que recogen artículos y revistas del ámbito nacional e internacional. Los análisis realizados ofrecen una respuesta concreta y aplicable para el perfeccionamiento del plan de estudios de la carrera, así como de los documentos normativos del desempeño de los profesores deportivos en el eslabón de base.

RESUMO O artigo surge da necessidade de contextualizar o ensino desportivo e de estabelecer as características que o diferenciam da formação desportiva, definindo os seus componentes e o sistema de categorias pedagógicas, princípios e regularidades que lhe são inerentes. Tudo isto, a fim de responder à contradição latente hoje em dia na formação inicial e contínua dos professores desportivos, bem como à forma de agir e desempenhar as suas funções profissionais em correspondência com as exigências reais do contexto da esfera de ação (elo básico) onde a sua prática profissional é indicada. O objectivo da investigação é refletir sobre os componentes, categorias e sistema de princípios que caracterizam o ensino desportivo, diferenciando-os dos do treino desportivo. Foi realizada uma extensa revisão bibliográfica em repositórios nacionais e nas bases de dados EBSCO HOST, Dialnet, SPORTDiscus e Google Scholar, que incluem artigos e periódicos nacionais e internacionais. As análises efetuadas oferecem uma resposta concreta e aplicável para a melhoria do currículo do grau, bem como os documentos normativos do desempenho dos professores desportivos na ligação de base.

ABSTRACT The article arises from the need to contextualize sports teaching and to establish the characteristics that differentiate it from sports training from the definition of its components and the system of pedagogical categories, principles and regularities that are inherent to it. All this, in order to give an answer to the latent contradiction today in the initial and continuous training of the sports teacher, as well as to the way of acting and performing their professional functions in correspondence with the real demands of the context of the sphere of action (basic link) where their professional practice is indicated. The objective of the research is to reflect on the components, categories and system of principles that characterize sports teaching, differentiating them from those of sports training. An extensive bibliographic review was carried out in national repositories and in the EBSCO HOST, Dialnet, SPORTDiscus and Google Scholar databases, which collect articles and journals of national and international scope. The analyses carried out offer a concrete and applicable answer for the improvement of the career curriculum, as well as of the normative documents for the performance of sports teachers in the basic link.

Uso de membrana de celulosa oxidada post-gingivectomía en hiperplasia gingival inducida por fenitoína / Use of oxidized cellulose regenerated post-gingivectomy on ginigival hyperplasia induced by phenytoin

Introducción: La hiperplasia gingival es una condición benigna caracterizada por el aumento de volumen de la encía. Algunos fármacos, factores genéticos, aparatología y placa dentobacteriana son factores que pueden inducir esta condición. Objetivo: Devolver la anatomía a la encía brindando una mejor estética y permitiendo una óptima higiene oral. Material y métodos: Paciente masculino de 20 años de edad con antecedentes de fenitoína presenta aumento de volumen en la encía. Resultados: Se obtuvieron resultados estéticos y funcionales satisfactorios con el tratamiento quirúrgico y el uso de membrana de celulosa oxidada. Conclusión: En el manejo de la hiperplasia gingival es importante el enfoque no quirúrgico como control de placa dentobacteriana y medidas de higiene del mismo paciente (AU)

Introduction: Gingival hyperplasia is a benign condition characterized for the grown on the gingival volume. Some drugs, genetic, orthodontic and dental plaque are some factors that can induce this condition. Objective: To return the gingival anatomy, providing a better aesthetic allowing also good oral hygiene. Material and methods: A male 20 years of age with medical history of phenytoin display grown on the gingival volume. Results: Aesthetic and functional results were achieved with the surgical treatment and the oxidized cellulose membrane. Conclusion: In the gingival hyperplasia management is important de non-surgical approach, as dental plaque control and oral hygiene of the patient (AU)

Propuesta de test para evaluar la capacidad aeróbica en triatletas juveniles / Proposta de um teste para avaliar a capacidade aeróbica em triatletas juvenis / Test proposal to evaluate the aerobic capacity in youth triathletes

RESUMEN El deporte actual motiva la búsqueda de nuevas soluciones que permitan al atleta responder a altas exigencias físicas dentro de un deporte sostenible. Una solución es la búsqueda de pruebas para el control del rendimiento. El objetivo consistió en proponer un test de campo para la evaluación de la capacidad aeróbica y realizar un triatlón con valores inferiores en cuanto a distancia y duración respecto al triatlón sprint. Este estudio presenta una propuesta de test de campo para la evaluación de la capacidad aeróbica, realizando triatlones con distancias inferiores. La distancia se determinó mediante un estudio práctico de la actividad competitiva. La validación de los test fue aplicado a 12 atletas de la categoría juvenil, con una edad promedio de 16, 3 años (± 1,3). La validez de contenido se comprobó mediante el criterio de 12 especialistas que afirmaron que este representa de manera adecuada la capacidad aeróbica. La confiabilidad y la concordancia se comprobaron mediante la prueba de rangos de Wilcoxon, con una significación asintótica de 0,574. Por el criterio de equivalencia, se monitorizó la prueba mediante la comparación de valores de frecuencia cardíaca del test con los de un triatlón sprint simulado. Para la validez contrastada, se compararon los resultados de los triatletas con los de cinco nadadores, tres ciclistas y dos corredores de fondo. Los tiempos del test fueron inferiores en los triatletas, lo que confirmó que es específico para triatletas.

RESUMO O esporte de hoje motiva a busca de novas soluções que permitam ao atleta atender a altas exigências físicas dentro de um esporte sustentável. Uma solução é a busca de testes de monitoramento de rendimento. O objetivo era propor um teste de campo para a avaliação da capacidade aeróbica e realizar um triatlo com valores mais baixos em termos de distância e duração do que um triatlo de sprint. Este estudo apresenta uma proposta de teste de campo para a avaliação da capacidade aeróbica, realizando triatlos com distâncias mais curtas. A distância foi determinada por um estudo prático da atividade competitiva. A validação dos testes foi aplicada a 12 atletas da categoria jovem, com idade média de 16,3 anos (± 1,3). A validez do conteúdo foi verificada pelos critérios de 12 especialistas que afirmaram que ele representa adequadamente a capacidade aeróbica. A confiabilidade e a concordância foram testadas por Wilcoxon rank test, com um significado assimptótico de 0,574. Para o critério de equivalência, o teste foi monitorado pela comparação dos valores de frequência cardíaca do teste com os de um triatlo de sprint simulado. Para a validade do teste, os resultados dos triatletas foram comparados com os de cinco nadadores, três ciclistas e dois corredores de longa distância. Os tempos de teste foram menores nos triatletas, confirmando que é específico para os triatletas.

ABSTRACTS Today's sport motivates the search for new solutions that allow the athlete to respond to high physical demands within a sustainable sport. One solution is to search for tests for performance monitoring. The aim of this study is to propose a field test for the evaluation of aerobic capacity, carrying out a triathlon with lower values in terms of distance and duration with respect to the sprint triathlon. The study presents a field test proposal for the evaluation of aerobic capacity performing triathlons with shorter distances. The distance was determined through a practical study of competitive activity. In the validation, the test was applied to 12 athletes of the youth category with an average age of 16.3 years (± 1,3). The content validity was verified using the criteria of 12 specialists who stated that it adequately represents the aerobic capacity. Reliability and concordance were checked using the Wilcoxon rank test where asymptotic significance was 0.574. By the equivalence criterion, the test was monitored by comparing heart rate values with those of a simulated sprint triathlon. For the contrasted validity, the results of the triathletes were compared with those of five swimmers, three cyclists and two long-distance runners. The test times were lower in the triathletes, confirming that the test is specific for triathletes.

El desentrenamiento deportivo, una alternativa vital en atletas juveniles de polo acuático de alto rendimiento / Destreinamento esportivo, uma alternativa vital para os jovens atletas de Pólo Aquático de alto rendimento / Sports detraining, a vital alternative for high-performance youth water polo athletes

RESUMEN En la actualidad, en Cuba, muchos atletas que llegan a su edad de retiro no realizan procesos de desentrenamiento deportivo, lo que repercute en su estado de salud a mediano plazo; estos comienzan a sufrir de enfermedades crónicas no transmisibles, además de depresión y estados psicológicos no adecuados. La presente investigación tuvo como objetivo determinar las insuficiencias que se derivan en la conducción del proceso de desentrenamiento deportivo en atletas retirados. Para lograr las metas propuestas, los autores se apoyaron en métodos teóricos y empíricos; se utiliza la herramienta de la estadística descriptiva (cálculo porcentual) para procesar la información, tomando como muestra a atletas juveniles retirados de polo acuático, médicos deportivos, psicólogos y fisioterapeutas de medicina deportiva, a los que se les aplicaron entrevistas y analizaron sus opiniones durante la conducción de este proceso. El resultado final fue que es insuficiente el conocimiento de cómo realizar este proceso de desentrenamiento deportivo en la muestra estudiada, no dominan cabalmente los métodos, procedimientos, contenidos y metodologías, a partir de las investigaciones y preparaciones metodológicas sobre el tema que es vital en el deporte de alto rendimiento. Entre las conclusiones más relevantes de este trabajo, se encuentra que los referentes teóricos del desentrenamiento deportivo en la actualidad no cumplen las expectativas de los atletas que se retiran en las diversas agrupaciones deportivas y los atletas cuando se retiran no poseen información de cómo realizar este proceso.

RESUMO Atualmente, em Cuba, muitos atletas que atingem sua idade de aposentadoria não realizam processos de destreinamento esportivo, o que afeta sua saúde a médio prazo; eles começam a sofrer de doenças crônicas não transmissíveis, assim como depressão e estados psicológicos não adequados. A presente investigação tinha como objetivo determinar as insuficiências que derivam na condução do processo de destreinamento esportivo em atletas aposentados. Para atingir os objetivos propostos, os autores se basearam em métodos teóricos e empíricos; a ferramenta estatística descritiva (cálculo percentual) foi utilizada para processar as informações, tomando como amostra atletas juvenis de pólo aquático, aposentados; médicos esportivos, psicólogos e fisioterapeutas de medicina esportiva, aos quais foram aplicadas entrevistas e analisadas suas opiniões durante a condução deste processo. O resultado final foi que não há conhecimento suficiente de como realizar este processo de destreinamento do esporte na amostra estudada, eles não dominam totalmente os métodos, procedimentos, conteúdos e metodologias, baseados em pesquisas e preparativos metodológicos sobre o tema que é vital no esporte de alto rendimento. Dentre as conclusões mais relevantes deste trabalho, constata-se que as referências teóricas de desvalorização do esporte atualmente não atendem às expectativas dos atletas que se aposentam em vários grupos esportivos e os atletas quando se aposentam não têm informações sobre como realizar este processo.

ABSTRACT At present, in Cuba, many athletes who reach their retirement age do not carry out sports detraining processes, which affects their health in the medium term; they begin to suffer from chronic non-communicable diseases, as well as depression and inadequate psychological states. The objective of this research was to determine the inadequacies derived from the conduction of the sports detraining process in retired athletes. To achieve the proposed goals, the authors relied on theoretical and empirical methods; the descriptive statistics tool (percentage calculation) was used to process the information, taking as a sample retired youth water polo athletes, sports doctors, psychologists and sports medicine physiotherapists, to whom interviews were applied and their opinions during the conduction of this process were analyzed. The final result was that there is insufficient knowledge of how to carry out this sports detraining process in the sample studied, they do not fully master the methods, procedures, contents and methodologies, based on the research and methodological preparations on the subject that is vital in high performance sports. Among the most relevant conclusions of this work, it is found that the theoretical references of sports detraining currently do not meet the expectations of the athletes who retire in the various sports groups and the athletes when they retire do not have information on how to carry out this process.

Producción científica sobre COVID-19 en revistas estudiantiles cubanas / Scientific production about COVID-19 in Cuban student journal

La publicación en revistas científicas estudiantiles constituye un elemento de gran valor en la formación investigativa de los estudiantes de pregrado. Este estudio tuvo como objetivo caracterizar la producción científica sobre la COVID-19 publicada en las revistas estudiantiles cubanas. Se realizó un estudio observacional, descriptivo y bibliométrico en artículos publicados en revistas científicas estudiantiles. Se empleó el gestor de referencias Zotero para obtener los metadatos y VOSviewer para analizar las redes de coautoría. Se publicaron 22 artículos, de los cuales el 45,45 por ciento fueron publicados en Universidad Médica Pinareña. La tipología predominante fue la carta al editor (50 por ciento) y se reportó un total de 53 autores. El 54,55 por ciento de los artículos fue firmado por dos autores; el 32,08 por ciento provenía de la Universidad de Ciencias Médicas de La Habana y el 36,36 por ciento fue firmado por autores extranjeros. Se emplearon 212 referencias; de ellas, el 4,25 por ciento correspondió a revistas científicas estudiantiles, en las que se citaron cinco artículos de Universidad Médica Pinareña. El índice de Price general fue de 0,86. Se identificaron tres redes de coautoría principales, que produjeron entre 2 y 6 artículos y estuvieron conformadas por un total de 3 a 6 autores. Existe una baja cifra de publicaciones de artículos sobre COVID-19 en las revistas científicas estudiantiles cubanas, los cuales están concentrados en las revistas Universidad Médica Pinareña y 16 de Abril, mientras se muestra un alto índice de publicaciones de autores foráneos. Se aprecian redes de colaboración bien definidas(AU)

Publication in student scientific journals constitutes elements of great value in the research training of undergraduate students. The objective of this study was to characterize the scientific production referring to COVID-19 published in the Cuban student journals. An observational, descriptive and bibliometric study was carried out in articles published in the Cuban Student Scientific Journals. The Zotero reference manager was used to manage the metadata and VOSviewer to analyze the co-author networks. 22 articles were published, where 45,45 percent were published in Universidad Médica Pinareña. The predominant typology was the letter to the editor (50 percent). A total of 53 authors were reported. 54,55 percent of the articles were signed by two authors, 32,08 percent came from the University of Medical Sciences of Havana, 36,36 percent were signed by foreign authors. 212 references were used, of which 4,25 percent were from Scientific Student Journals, citing five articles from Universidad Médica Pinareña. The general Price index was 0,86. Three main co-authorship networks were identified, which produced between 2 and 6 articles and consisted by 3 and 6 authors. There is a low number of publications of articles on COVID-19 in Cuban student scientific journals, which are concentrated in Universidad Médica Pinareña and 16 de Abril magazines, while showing a high index of publications by foreign authors. Well-defined collaborative networks are appreciated(AU)