Vías propuestas para las relaciones interdisciplinarias entre asignaturas clínicas y Farmacología en la carrera Estomatología

En la carrera Estomatología, las relaciones interdisciplinarias entre las asignaturas clínicas y la Farmacología resultan necesarias para lograr en los estudiantes un mayor desarrollo de habilidades teóricas y prácticas dirigidas la prescripción racional de medicamentos de uso estomatológico. La presente investigación tuvo como objetivo describir dos vías para lograr lo antes expuesto. Las vías propuestas resultaron ser: la identificación de los nodos potenciales de articulación interdisciplinaria entre estas unidades curriculares y la interrelación de métodos de enseñanzas. Se concluye que ambas propuestas constituyen vías concretas para el establecimiento y desarrollo de las relaciones interdisciplinarias entre las asignaturas clínicas y la Farmacología en la carrera Estomatología.

In the Stomatology degree, interdisciplinary relationships between clinical subjects and Pharmacology are necessary to achieve in students a greater development of theoretical and practical skills aimed at the rational prescription of medications for stomatological use. The objective of this research was to describe two ways to achieve the above. The proposed paths turned out to be: the identification of potential nodes of interdisciplinary articulation between these curricular units and the interrelation of teaching methods. It is concluded that both proposals constitute concrete ways for the establishment and development of interdisciplinary relationships between clinical subjects and Pharmacology in the Stomatology career.

The haplolethal gene wupA of Drosophila exhibits potential as a target for an X-poisoning gene drive.

A synthetic gene drive that targets haplolethal genes on the X chromosome can skew the sex ratio toward males. Like an "X-shredder," it does not involve "homing," and that has advantages including the reduction of gene drive resistance allele formation. We examine this "X-poisoning" strategy by targeting 4 of the 11 known X-linked haplolethal/haplosterile genes of Drosophila melanogaster with CRISPR/Cas9. We find that targeting the wupA gene during spermatogenesis skews the sex ratio so fewer than 14% of progeny are daughters. That is unless we cross the mutagenic males to X^XY female flies that bear attached-X chromosomes, which reverses the inheritance of the poisoned X chromosome so that sons inherit it from their father, in which case only 2% of the progeny are sons. These sex ratio biases suggest that most of the CRISPR/Cas9 mutants we induced in the wupA gene are haplolethal but some are recessive lethal. The males generating wupA mutants do not suffer from reduced fertility; rather, the haplolethal mutants arrest development in the late stages of embryogenesis well after fertilized eggs have been laid. This provides a distinct advantage over genetic manipulation strategies involving sterility which can be countered by the remating of females. We also find that wupA mutants that destroy the nuclear localization signal of shorter isoforms are not haplolethal as long as the open reading frame remains intact. Like D. melanogaster, wupA orthologs of Drosophila suzukii and Anopheles mosquitos are found on X chromosomes making wupA a viable X-poisoning target in multiple species.

Flexible metallic core-shell nanostructured electrodes for neural interfacing.

Electrodes with nanostructured surface have emerged as promising low-impedance neural interfaces that can avoid the charge-injection restrictions typically associated to microelectrodes. In this work, we propose a novel approximation, based on a two-step template assisted electrodeposition technique, to obtain flexible nanostructured electrodes coated with core-shell Ni-Au vertical nanowires. These nanowires benefit from biocompatibility of the Au shell exposed to the environment and the mechanical properties of Ni that allow for nanowires longer and more homogeneous in length than their only-Au counterparts. The nanostructured electrodes show impedance values, measured by electrochemical impedance spectroscopy (EIS), at least 9 times lower than those of flat reference electrodes. This ratio is in good accordance with the increased effective surface area determined both from SEM images and cyclic voltammetry measurements, evidencing that only Au is exposed to the medium. The observed EIS profile evolution of Ni-Au electrodes over 7 days were very close to those of Au electrodes and differently from Ni ones. Finally, the morphology, viability and neuronal differentiation of rat embryonic cortical cells cultured on Ni-Au NW electrodes were found to be similar to those on control (glass) substrates and Au NW electrodes, accompanied by a lower glial cell differentiation. This positive in-vitro neural cell behavior encourages further investigation to explore the tissue responses that the implantation of these nanostructured electrodes might elicit in healthy (damaged) neural tissues in vivo, with special emphasis on eventual tissue encapsulation.

Early triadic interactions in the first year of life: a systematic review on object-mediated shared encounters.

Infants' early interactions with adults and everyday objects are key to socio-communicative development, but their emergence and development are still under debate. Aiming at describing the diversity of theoretical and methodological approaches on triadicity during the first year of life, we conducted a systematic and qualitative review of recent literature. Following PRISMA 2020 guidelines, we explored the scientific production of recent decades on triadic interactions up to 12 months of age. We initially screened 1943 items from which we obtained a final sample of 51 publications. Studies are usually conducted in laboratory settings, while ecological research is becoming increasingly common, especially in home settings. According to a thematic analysis of the data, we discussed the different perspectives on the origin and conceptualization of triadic interactions, and how they contribute to structuring and facilitating other developmental phenomena, such as the children's communicative gestures and uses of objects. Prior to the origin of intentional communication, adults facilitate early forms of triadicity based on fostering opportunities for infants' communication and engagement with both adults and materiality. However, there is a need for further research that explore the potential of early triadic interactions for parenting and early childhood education practises.

Bio-potential noise of dry printed electrodes: physiology versus the skin-electrode impedance.

Objective. To explore noise characteristics and the effect physiological activity has on the link between impedance and noise.Approach. Dry-printed electrodes are emerging as a new and exciting technology for skin electro-physiology. Such electrode arrays offer many advantages including user convenience, quick placement, and high resolution. Here we analyze extensive electro-physiological data recorded from the arm and the face to study and quantify the noise of dry electrodes, and to characterize the link between noise and impedance. In particular, we studied the effect of the physiological state of the subject (e.g. rapid eye movement sleep) on noise.Main results. We show that baseline noise values extracted from dry electrodes in the arm are in agreement with the Nyquist equation. In the face, on the other hand, the measured noise values were higher than the values predicted by the Nyquist equation. In addition, we studied how different electrode properties affect performances, including electrode size, shape, and material properties.Significance. Altogether, the results presented here provide a basis for understanding dry electrode performances and substantiate their great potential in electro-physiological investigations.

Pelvic + Anatomy: A new interactive pelvic anatomy model. Prospective randomized control trial with first-year midwife residents.

Detailed knowledge of female pelvic floor anatomy is essential for midwifery and other professionals in obstetrics. Physical models have shown great potential for teaching anatomy and enhancing surgical skills. In this article, we introduce an innovative physical anatomy model called "Pelvic+" to teach anatomical relationships in the female pelvis. The Pelvic+ model's value was compared to a traditional lecture in 61 first-year midwifery students randomly allocated to either the Pelvic+ (n = 30) or a control group (n = 32). The primary outcome measure was a quiz comprised of 15 multiple choice questions on pelvic anatomy. Participants were assessed at baseline (Pre-Test), upon completion of the intervention (Post-Test1) and 4 months afterward (Post-Test2). Satisfaction with the approach was assessed at Post-Test1. Increase in knowledge was greater and the approach more accepted among resident midwives when Pelvic+ was used instead of standard lectures. Four months after the intervention, the improvement in knowledge was preserved in the Pelvic+ group. This randomized study demonstrates that the Pelvic+ simulator is more effective than classical learning for pelvic anatomy education, and offers a higher level of satisfaction among students during the educational process. Medical students training in obstetrics and gynecology, or any professional who specializes in the female pelvic floor might also benefit from incorporation of the Pelvic+ model into their training program.

Fundamentals of osteoarthritis: Inflammatory mediators in osteoarthritis.

OBJECTIVES: As more has become known of the pathophysiology of osteoarthritis (OA), evidence that inflammation plays a critical role in its development and progression has accumulated. Here, we aim to review current knowledge of the complex inflammatory network in the OA joint. DESIGN: This narrative review is presented in three main sections: local inflammation, systemic inflammation, and therapeutic implications. We focused on inflammatory mediators and their link to OA structural changes in the joint. RESULTS: OA is characterized by chronic and low-grade inflammation mediated mostly by the innate immune system, which results in cartilage degradation, bone remodeling and synovial changes. Synovitis is regarded as an OA characteristic and associated with increased severity of symptoms and joint dysfunction. However, the articular cartilage and the subchondral bone also produce several pro-inflammatory mediators thus establishing a complex interplay between the different tissues of the joint. In addition, systemic low-grade inflammation induced by aging, obesity and metabolic syndrome can contribute to OA development and progression. The main inflammatory mediators associated with OA include cytokines, chemokines, growth factors, adipokines, and neuropeptides. CONCLUSIONS: Future research is needed to deeper understand the molecular pathways mediating the inflammation in OA to provide new therapeutics that target these pathways, or to repurpose existing drugs.

Ancianos con enfermedades bucales y medicación antihipertensiva / Elderly with oral diseases and antihypertensive medication i: en

Introducción: El consumo de medicamentos antihipertensivos se relaciona con la aparición de múltiples enfermedades bucales en los ancianos. Objetivo: Caracterizar a adultos mayores con enfermedades bucales y medicación antihipertensiva. Métodos: Se realizó una investigación observacional, descriptiva y transversal de 79 adultos mayores con enfermedades bucales y medicación antihipertensiva, asistidos en el Servicio de Estomatología del Policlínico 14 de Junio, de la provincia de Las Tunas, desde enero de 2021 hasta igual mes de 2022. Entre las variables analizadas figuraron: edad, sexo, medicamento consumido (según grupo antihipertensivo) y presencia de enfermedad bucal. Se emplearon métodos teóricos (analítico-sintético e inductivo-deductivo), empíricos (observación y encuesta) y estadísticos (estadística descriptiva). Se utilizó el porcentaje como medida de resumen. Resultados: En la serie predominaron el sexo femenino (63,3 %) y el grupo etario de 60-69 años (48,1 %). Se observó que los grupos de antihipertensivos más utilizados fueron los diuréticos tiazídicos, los inhibidores de la enzima convertidora de angiotensina y los bloqueadores de los canales de calcio, de los cuales los medicamentos más consumidos resultaron ser la hidroclorotiazida (90,0 %), el captopril (47,0 %) y el nifedipino (20,0 %), respectivamente. Asimismo, al analizar la presencia de enfermedades bucales se obtuvo una primacía de la caries dental (90,0 %), las periodontopatías (87,3 %) y la xerostomía (57,0 %). Conclusiones: Los adultos mayores con enfermedades bucales y medicación antihipertensiva, en particular las féminas y el grupo etario de 60-69 años, se caracterizaron por consumir fármacos antihipertensivos de primera generación y por presentar enfermedades bucales frecuentes.

Introduction: The consumption of antihypertensive medications is related to the emergence of multiple oral diseases in the elderly. Objective: To characterize the elderly with oral diseases and antihypertensive medication. Methods: An observational, descriptive and cross-sectional investigation was carried out of 79 elderly with oral diseases and antihypertensive medication, assisted in the Stomatology Service of 14 de Junio Polyclinic, in Las Tunas province, from January, 2021 to the same month in 2022. Among the analyzed variables we can mention: age, sex, consumed medication (according to antihypertensive group) and presence of oral disease. Theoretical methods (analytic-synthetic and inductive-deductive), empiric (observation and surveys) and statistical (descriptive statistic) were used. The percentage was used as summary measure. Results: In the series there was prevalence of the female sex (63.3 %) and the 60-69 age group (48.1 %). It was observed that the most used antihypertensive groups were the thiazidic diuretics, angiotensin-converting enzyme inhibitor and blocker of the calcium channels; among these, the most consumed medications were hydrochlorothiazide (90.0 %), captopril (47.0 %) and nifedipine (20.0 %), respectively. Also, when analyzing the presence of oral diseases a primacy of dental decay (90.0 %), periodontopaties (87.3 %) and xerostomia was obtained (57.0 %). Conclusions: Elderly with oral diseases and antihypertensive medication, in particular females and the 60-69 age group were characterized by the consumption of first generation antihypertensive drugs and the presence of frequent oral diseases.

Satisfacción de prescriptores y usuarios de fitofármacos en un servicio de estomatología de Santiago de Cuba / Satisfaction of prescriptors and phytopharmaco users in a stomatology service of Santiago de Cuba i: en

Introducción: La satisfacción de prescriptores y usuarios es un aspecto importante a tener en cuenta durante la prescripción de fitofármacos. Objetivo: Evaluar la satisfacción de prescriptores y usuarios de fitofármacos en un servicio de estomatología. Métodos: Se realizó una investigación observacional, descriptiva y transversal de 35 prescriptores y 22 usuarios de fitofármacos, seleccionados a través de un muestreo probabilístico aleatorio simple, atendidos en el Servicio de Estomatología del Policlínico Docente 30 de Noviembre de Santiago de Cuba, desde marzo del 2020 hasta igual mes del 2021. Las variables analizadas fueron categoría ocupacional del prescriptor, satisfacción de prescriptores y satisfacción de usuarios; para las 2 últimas se establecieron criterios, indicadores y estándares. Asimismo, se emplearon la encuesta como método para la recogida de la información y el porcentaje como medida de resumen. Resultados: En cuanto a la categoría ocupacional, 20 prescriptores (57,1 %) resultaron ser estomatólogos especialistas de primer grado en estomatología general integral. Al evaluar la satisfacción de estos prescriptores, se observó que en un solo criterio el indicador superó ligeramente (91,4 %) el estándar prefijado (90,0 %) y en el resto los valores fueron inferiores a 50,0 %. La evaluación de la satisfacción de los usuarios arrojó que en ningún indicador se alcanzó el estándar prefijado de 90,0 %. Conclusiones: En la institución señalada la satisfacción de prescriptores y usuarios de fitofármacos resultó inadecuada.

Introduction: Prescriptors' and users' satisfaction is an important aspect to take into account during the phytopharmaco prescription. Objective: To evaluate the satisfaction of prescriptors and phytopharmaco users in a stomatology service. Methods: An observational, descriptive and cross-sectional investigation of 35 prescriptors and 22 phytopharmaco users was carried out. They were selected through a simple random probabilistic sampling and assisted in the Stomatology Service of 30 de Noviembre Teaching Polyclinic in Santiago de Cuba, from March, 2020 to the same month in 2021. The analyzed variables were occupational category of the prescriptor, prescriptors satisfaction and users satisfaction; for the last 2 variables, approaches, indicators and standards were established. Likewise, the survey as information collection method and the percentage as summary measure were used. Results: As for the occupational category, 20 prescriptors (57.1%) were first degree specialist stomatologist in general comprehensive stomatology. When evaluating the satisfaction of these prescriptors it was observed that in a single approach the indicator overcame discreetly (91.4%) the preset standard (90.0%) and in the rest the values were inferior to 50.0%. The evaluation of the users' satisfaction showed that in any indicator the preset standard of 90.0% was accomplished. Conclusions: In the appointed institution the prescriptors' and phytopharmaco users' satisfaction was inadequate.

Validación de una estrategia didáctica para las relaciones interdisciplinarias entre Farmacología y asignaturas clínicas estomatológicas

Introducción: La validación de estrategias didácticas para favorecer las relaciones interdisciplinarias en el proceso enseñanza aprendizaje, resulta necesaria para su posterior aplicación en la práctica pedagógica y posible generalización. Objetivo: Validar una estrategia didáctica para las relaciones interdisciplinarias en el proceso enseñanza aprendizaje de las asignaturas clínicas, con la Farmacología en la carrera Estomatología. Métodos: Se realizó una investigación educativa entre enero y junio de 2022. Se asumieron métodos teóricos (analítico-sintético, inductivo-deductivo y sistematización), empíricos (consulta a expertos) y matemáticos-estadísticos (estadística descriptiva). Se seleccionó a los expertos según el nivel de competencia. Se elaboró y aplicó un cuestionario para valorar 16 aspectos de la estrategia en términos de: muy adecuado, bastante adecuado, adecuado, poco adecuado y no adecuado. Los criterios valorativos emitidos por los expertos se procesaron mediante el modelo matemático de Torgerson y se determinó el nivel de consenso de los expertos mediante el cálculo del coeficiente de concordancia de Kendall. Resultados: El coeficiente de competencia promedio de los expertos fue alto. De los 16 aspectos valorados, uno resultó "bastante adecuado" y el resto, "muy adecuado". Se estimó concordancia significativa entre los expertos consultados. Conclusiones: Los resultados de la consulta a expertos apuntan al reconocimiento del valor científico, teórico y práctico, de la estrategia didáctica diseñada para favorecer las relaciones interdisciplinarias en el proceso enseñanza aprendizaje de las asignaturas clínicas, con la Farmacología en la carrera Estomatología y le otorgan validez.

Introduction: The validation of didactic strategies to favor interdisciplinary relationships in the teaching-learning process is necessary for their subsequent application in pedagogical practice and possible generalization. Objective: To validate a didactic strategy for interdisciplinary relationships in the teaching-learning process of clinical subjects, with Pharmacology in the Stomatology career. Methods: Educational research was carried out, between January and June, 2022. Theoretical methods (analytical-synthetic, inductive-deductive and systematization), empirical (consultation to experts) and mathematical-statisticians (descriptive statistics). The experts were selected according to the level of competence. A questionnaire was developed and applied to assess 16 aspects of the strategy, in terms of: very suitable, quite suitable, suitable, not very suitable and not suitable. The evaluative criteria issued by the experts were processed using the Torgerson mathematical model and the level of consensus of the experts was determined by calculating the Kendall concordance coefficient. Results: The average competence coefficient of the experts turned out to be high. Of the 16 aspects assessed, one was "fairly adequate" and the rest, "very adequate". Significant agreement was estimated between the experts consulted Conclusions: The results of the expert consultation point to the recognition of the scientific, theoretical and practical value of the didactic strategy designed to favor interdisciplinary relationships in the teaching-learning process of clinical subjects with Pharmacology in the Stomatology career, and give validity to the same.

Dynamic phase separation of the androgen receptor and its coactivators key to regulate gene expression.

Numerous cancers, including prostate cancer (PCa), are addicted to transcription programs driven by specific genomic regions known as super-enhancers (SEs). The robust transcription of genes at such SEs is enabled by the formation of phase-separated condensates by transcription factors and coactivators with intrinsically disordered regions. The androgen receptor (AR), the main oncogenic driver in PCa, contains large disordered regions and is co-recruited with the transcriptional coactivator mediator complex subunit 1 (MED1) to SEs in androgen-dependent PCa cells, thereby promoting oncogenic transcriptional programs. In this work, we reveal that full-length AR forms foci with liquid-like properties in different PCa models. We demonstrate that foci formation correlates with AR transcriptional activity, as this activity can be modulated by changing cellular foci content chemically or by silencing MED1. AR ability to phase separate was also validated in vitro by using recombinant full-length AR protein. We also demonstrate that AR antagonists, which suppress transcriptional activity by targeting key regions for homotypic or heterotypic interactions of this receptor, hinder foci formation in PCa cells and phase separation in vitro. Our results suggest that enhanced compartmentalization of AR and coactivators may play an important role in the activation of oncogenic transcription programs in androgen-dependent PCa.

Calidad de la prueba parcial de un curso propio sobre diátesis hemorrágicas en la carrera Estomatología

Introducción: Dentro de los grandes desafíos que la formación universitaria en el sector salud enfrenta hoy, está el implementar y validar instrumentos de evaluación efectivos. Objetivo: Evaluar la calidad de la prueba parcial del curso propio Bases morfofuncionales de las principales diátesis hemorrágicas en Estomatología, de la Facultad de Estomatología, Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022. Método: Estudio observacional analítico y transversal, en 30 exámenes correspondientes a la prueba parcial del curso propio Bases morfofuncionales de las principales diátesis hemorrágicas en Estomatología, plan de estudio E, carrera de Estomatología, Facultad de Estomatología, Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022. Se analizó la correspondencia del fondo de tiempo y la cantidad de ítems explorados en el examen, se calcularon índices de dificultad y de discriminación de incisos y preguntas, coeficiente de discriminación biserial puntual y de consistencia interna. Resultados: Existió correspondencia adecuada entre el fondo de tiempo asignado a los contenidos de las temáticas y la cantidad de ítems explorados en el examen. Predominaron los reactivos con índice de dificultad media y buen poder de discriminación. La consistencia interna de las preguntas de modo individual fue excelente, pero la del examen en general fue baja. Conclusiones: La calidad del examen parcial del curso propio Bases morfofuncionales de las principales diátesis hemorrágicas en Estomatología, aplicado en la Facultad de Estomatología, Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022, fue poco adecuada.

Introduction: One of the challenges facing universities of health sciences today is the implementation and validation of effective tools for evaluation. Objective: To evaluate the quality of the partial exams of an in-house course in Morphofunctional bases of the most common hemorrhagic diathesis in Stomatology, Facultad de Estomatología, Universidad de Ciencias Médicas de Santiago de Cuba, course 2022. Method: An analytical and transversal observational study was carried out. For the study, it was selected 30 of the partial exams implemented in the in-house Morphofunctional bases of the most common hemorrhagic diathesis in Stomatology course, type (E) course syllabus, Stomatology career, Facultad de Estomatología, Universidad de Ciencias Médicas de Santiago de Cuba, course 2022. Correspondence between scheduled time and the number of items used in the test was assessed, and also, difficulty index and discrimination index for items and questions, point-biserial item discrimination coefficient and internal consistency coefficient were calculated. Results: There was an adequate correspondence between the time scheduled for the topics and the number of items used in the exam. Items with a moderate difficulty index and high degree of discrimination index predominated. The internal consistency of the individual questions was excellent, but the exam in general was low. Conclusions: The quality of the partial exam of the in-house course Morphofunctional bases of the main hemorrhagic diathesis treated in Stomatology, giving in the Faculty of Stomatology, University of Medical Sciences of Santiago de Cuba, course 2022, was inadequate.

Introdução: Entre os grandes desafios que a educação universitária na área da saúde enfrenta hoje, está a implementação e validação de instrumentos de avaliação eficazes. Objetivo: Avaliar a qualidade do teste parcial do curso Bases morfofuncionais da diátese hemorrágica principal em Estomatologia, da Facultad de Estomatología de la Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022. Método: Estudo observacional analítico e transversal, em 30 exames correspondentes à prova parcial do próprio curso Bases morfofuncionais da diátese hemorrágica principal em Estomatologia, plano de estudos E, carreira de Estomatologia de la Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022. A correspondência do analisou-se o fundo de tempo e o número de itens explorados no exame, calcularam-se índices de dificuldade e discriminação de subseções e questões, coeficiente de discriminação bisserial pontual e consistência interna. Resultados: Houve correspondência adequada entre o tempo destinado aos conteúdos dos temas e o número de itens explorados no exame. Predominaram os itens com índice de dificuldade médio e bom poder de discriminação. A consistência interna das questões individuais foi excelente, mas a do exame como um todo foi baixa. Conclusões: A qualidade do exame parcial das Bases Morfofuncionais da diátese hemorrágica principal do curso de Estomatologia, aplicado na Facultad de Estomatología de la Universidad de Ciencias Médicas de Santiago de Cuba, curso 2022, não foi adequada.

SANT esplénico: tumoración infrecuente / Splenic SANT: Uncommon tumor

La Transformación Nodular Angiomatoide Esclerosante del bazo (SANT) es una patología poco común, que afecta a vasos sanguíneos de forma benigna con esclerosis extensa de la pulpa roja. Paciente masculino, 24 años, consulta en centro privado (Paraguay) por un cuadro de 7 meses de evolución de disnea paroxística y sudoración fría. Al examen físico y laboratorial sin datos de valor. La ecografía abdominal demuestra bazo con parénquima inhomogéneo con imagen pseudonodular 48x41 mm de diámetro, la RMN con contraste confirma hallazgo por nódulo irregular, con realce que predomina en la periferia de la fase arterial, con aspecto radiado y relleno centrípeto en fase venosa y tardía, la histopatología confirma diagnóstico clínico-imagenológico de SANT. Esta tumoración es frecuente entre los 45 a 48 años, manifestada con esplenomegalia, poca sintomatología, llama la atención la presentación del caso que se contrapone con la bibliografía. Considerando la falta de métodos auxiliares para descartar la malignidad, se aplica esplenectomía como conducta terapéutica.

Nodular Angiomatoid Sclerosing Transformation of the Spleen (SANT) is a rare pathology, which affects blood vessels benignly with extensive sclerosis of the red pulp. A 24-year-old man consulted in a private center (Paraguay) for a 7-month course of paroxysmal dyspnea and cold sweating. Physical examination and laboratory evaluation show no abnormalities. Abdominal ultrasound shows a spleen with heterogeneous parenchyma and a pseudonodular image that is 48mm x 41mm in diameter. Contrasted MRI confirms the finding of an irregular nodule, with enhancement that predominates in the periphery of the arterial phase, with radiated appearance and centripetal filling in venous and late phase. Histopathology confirms diagnosis of SANT. SANT is frequent between 45 and 48 years of age, manifested with splenomegaly and scarce symptomatology. The presentation of this case differs with literature. Considering the lack of auxiliary methods to rule out malignancy, a splenectomy is performed.

Zika vector competence data reveals risks of outbreaks: the contribution of the European ZIKAlliance project.

First identified in 1947, Zika virus took roughly 70 years to cause a pandemic unusually associated with virus-induced brain damage in newborns. Zika virus is transmitted by mosquitoes, mainly Aedes aegypti, and secondarily, Aedes albopictus, both colonizing a large strip encompassing tropical and temperate regions. As part of the international project ZIKAlliance initiated in 2016, 50 mosquito populations from six species collected in 12 countries were experimentally infected with different Zika viruses. Here, we show that Ae. aegypti is mainly responsible for Zika virus transmission having the highest susceptibility to viral infections. Other species play a secondary role in transmission while Culex mosquitoes are largely non-susceptible. Zika strain is expected to significantly modulate transmission efficiency with African strains being more likely to cause an outbreak. As the distribution of Ae. aegypti will doubtless expand with climate change and without new marketed vaccines, all the ingredients are in place to relive a new pandemic of Zika.

Fundamentos teóricos de una estrategia didáctica interdisciplinaria entre la Farmacología y las asignaturas clínicas estomatológicas en la Universidad de Ciencias Médicas de Santiago de Cuba / Theoretical foundations of an interdisciplinary didactic strategy between Pharmacology and stomatological clinical subjects in a Cuban medical university

El desarrollo de la interdisciplinariedad, a través del proceso de enseñanza aprendizaje enmarcado en el trabajo conjunto de la unidad curricular de Farmacología y las asignaturas clínicas de la Disciplina Principal Integradora de la carrera de Estomatología, resulta esencial para la sistematización de los contenidos de Farmacología y el desarrollo de habilidades teórico-prácticas en la prescripción racional de medicamentos de uso estomatológico por parte de estudiantes. En el presente ensayo se exponen los fundamentos teóricos que sustentan la estrategia didáctica diseñada para lograr lo antes expuesto. El análisis de los referentes teóricos existentes permitió precisar fundamentos filosóficos, sociológicos, psicológicos, pedagógicos, didácticos y de la educación médica cubana. Finalmente, se consideró que dichos fundamentos permitieron otorgar a la estrategia didáctica diseñada la estructura y coherencia necesarias y el carácter científico, con lo cual se contribuye a la formación integral de los estudiantes y, por consiguiente, al futuro egresado de la carrera de Estomatología.

The development of interdisciplinarity through the teaching-learning process between the Pharmacology curricular unit and the clinical subjects of the Main Integrative Discipline in the Stomatology career, is essential for the systematization of the essential contents of Pharmacology and to develop theoretical skills in the students' practices for the rational prescription of drugs for stomatological use. In this essay, the theoretical foundations that support a designed didactic strategy to achieve the above are exposed. The analysis of the existing theoretical references allowed to specify the philosophical, sociological, psychological, pedagogical, didactic and of Cuban Medical Education foundations. Finally, it was considered that these foundations allowed to give the designed didactic strategy the necessary structure and coherence and scientific character, thereby contributing to the comprehensive training of students and, consequently, of future graduates of the Stomatology career.

Electrodeposited Magnetic Nanowires with Radial Modulation of Composition.

In the last few years, magnetic nanowires have gained attention due to their potential implementation as building blocks in spintronics applications and, in particular, in domain-wall- based devices. In these devices, the control of the magnetic properties is a must. Cylindrical magnetic nanowires can be synthesized rather easily by electrodeposition and the control of their magnetic properties can be achieved by modulating the composition of the nanowire along the axial direction. In this work, we report the possibility of introducing changes in the composition along the radial direction, increasing the degrees of freedom to harness the magnetization. In particular, we report the synthesis, using template-assisted deposition, of FeNi (or Co) magnetic nanowires, coated with a Au/Co (Au/FeNi) bilayer. The diameter of the nanowire as well as the thickness of both layers can be tuned at will. In addition to a detailed structural characterization, we report a preliminary study on the magnetic properties, establishing the role of each layer in the global collective behavior of the system.

Asociación plaquetas-factor de crecimiento epidérmico en pacientes con cáncer pulmonar de células no pequeñas tratados con quimioterapia / Platelet-epidermal growth factor association in patients with non-small cell lung cancer treated with chemotherapy

RESUMEN Introducción: la concentración plasmática del factor de crecimiento epidérmico pudiera encontrarse alterada en pacientes con cáncer de pulmón de células no pequeñas y trombocitopenia/trombocitosis por quimioterapia. Objetivo: determinar la asociación existente entre la concentración plasmática plaquetaria y la concentración plasmática de factor de crecimiento epidérmico en pacientes con cáncer de pulmón de células no pequeñas tratados con quimioterapia, entre marzo de 2019 y febrero de 2020 en el Hospital Provincial Saturnino Lora. Métodos: se realizó un estudio observacional descriptivo transversal en el Hospital Provincial Saturnino Lora, provincia Santiago de Cuba, Cuba, entre marzo de 2019 y febrero de 2020. El universo estuvo constituido por 54 pacientes con diagnóstico de cáncer pulmonar de células no pequeñas tratados con quimioterapia. Por muestreo probabilístico aleatorio simple se seleccionó una muestra de 12 pacientes. Se midieron las variables: concentración plasmática plaquetaria (pre y post-quimioterapia), concentración plasmática de factor de crecimiento epidérmico (pre y post-quimioterapia), y modificación de la concentración plasmática de factor de crecimiento epidérmico (castración, no castración). Para el procesamiento de los datos se empleó el test estadístico T student y la correlación lineal de Pearson, así como la media y desviación estándar como medidas de resumen y dispersión, respectivamente. Resultados: entre las concentraciones plasmáticas plaquetaria y del factor de crecimiento epidérmico se halló una relación lineal de -0,37 previo a la quimioterapia y de -0,51, posterior a esta; no se encontraron diferencias estadísticamente significativas. Conclusiones: se concluye que la modificación de la concentración plasmática del factor de crecimiento epidérmico no guarda relación aparente con la modificación plasmática plaquetaria, con posible relación espuria, dada por la quimioterapia.

ABSTRACT Introduction: the plasma concentration of epidermal growth factor may be altered in patients with non-small cell lung cancer and thrombocytopenia/thrombocytosis due to chemotherapy. Objective: to determine the association between platelet plasma concentration and epidermal growth factor plasma concentration in patients with non-small cell lung cancer treated with chemotherapy between March 2019 and February 2020 at Saturnino Lora Provincial Hospital. Methods: a cross-sectional, descriptive and observational study was conducted at Saturnino Lora Provincial Hospital, Santiago de Cuba province, Cuba, between March 2019 and February 2020. The target group comprised 54 patients diagnosed with non-small cell lung cancer treated with chemotherapy. A sample of 12 patients was chosen by simple probability-random sampling: platelet plasma concentration (pre- and post-chemotherapy), epidermal growth factor plasma concentration (pre- and post-chemotherapy), and modification of epidermal growth factor plasma concentration (castration, non-castration) were measured. For data processing, the statistical T-student test and Pearson's linear correlation were applied, as well as the mean and standard deviation as summary and dispersion measures, respectively. Results: a linear relationship of -0.37 before chemotherapy and -0.51 after the chemotherapy was found between platelet and epidermal growth factor plasma concentrations; no statistically significant differences were found. Conclusions: it is concluded that the modification of the plasma concentration of epidermal growth factor has no apparent relationship with the platelet plasma modification, with possible spurious relationship, given by chemotherapy.