Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Breast angiosarcoma is a rare cancer. The case of a 72-year-old woman who went to the Outpatient Surgery Clinic of ´´Dr. Ambrosio Grillo Portuondo´´ Teaching Clinical-Surgical Hospital in Santiago de Cuba was presented, for showing painless and irregular tumor in the external interquadrantal periareolar region of the right breast of approximately 3 cm in diameter. Physical examination of the breast and right armpit showed malignancy and was confirmed by fine needle aspirative cytology, however, imaging studies reported benignity. The excision of the nodule and the histopathological study demonstrated the diagnosis of primary angiosarcoma of high degree of malignancy and proceeded to multidisciplinary care. At the time of the report, the patient received chemotherapy and adjuvant radiotherapy with satisfactory evolution. The medical literature on the subject was reviewed and the importance of the clinical method in breast cancer care was demonstrated. 

Introducción: El trabajo aborda la formación postgraduada del Licenciado en Nutrición desde su superación profesional, como respuesta a las exigencias sociales de ofrecer un servicio de excelencia. Objetivo: Exponer una breve síntesis de la superación del Licenciado en Nutrición y los retos y desafíos que debe alcanzar. Método: Se realizó un estudio descriptivo de corte transversal, durante el segundo semestre del año 2020, donde se emplearon como métodos de orden teórico el análisis documental y la sistematización, los cuales permitieron organizar y extraer información relevante, a partir de la amplia revisión bibliográfica realizada sobre el tema, que favoreció la argumentación de la superación profesional del nutricionista. Resultados: Los elementos ofrecidos, conducen a comprender que la superación profesional,es un proceso, con carácter continuo y permanente, que propicia la actualización, ampliación y perfeccionamiento de conocimientos y habilidades, en función del contexto en que se desarrolla y transcurre durante el desempeño profesional para su mejoramiento. Conclusiones: La superación profesional de los Licenciados en Nutrición debe estar en correspondencia con los principales problemas de salud del territorio y las necesidades de aprendizaje identificadas. Lo cual garantiza una actividad asistencial de mayor calidad a la población, siendo una vía de educación permanente para ellos que permite a través de un conjunto de procesos de formación la adquisición, perfeccionamiento continuo de los conocimientos, habilidades básicas y especializadas, requeridas para un mejor desempeño de sus responsabilidades y funciones laborales, así como para su desarrollo integral.

Objective: To determine the relationship between resilient coping and future expectations.Methods: The approach was exclusively quantitative, observational, prospective, cross-sectional, and correlational in design. The participants were 2202 students from the (UNHEVAL, Perú), and the instruments resilient coping scale and the future expectations scale were used, which were digitized to be applied. A correlation analysis was performed using Spearman's Rho non-parametric statistical test.Results: The level of future expectations where the largest number of students is located was high, with 55.6%, and at the same time, 53.4% of the students manifested medium-level resilient coping. The main finding is that university students obtained a significant relationship between resilient coping and future expectations (rs=0.39; p=0.000), as in future expectations with the three dimensions of resilient coping, personal resilient coping (rs=0.36; p=0.000), social resilient coping (rs=0.38; p=0.000) and spiritual resilient coping (rs=0.18; p=0.000).Conclusions: There is a statistically significant and positive relationship between resilient coping and future expectations in students (UNHEVAL, Perú).

Understanding premature wear in joint replacements due to poor lubrication, which can result in high friction values, is a broad and intricate topic to address. In addition, if the lubricant is the synovial fluid, the lubrication mechanisms that occur are even more complex to unveil. This article reviews the current state of knowledge on synovial lubrication, as well as the rheological characteristics of the lubricating fluid. It is also made a mention of some experimental techniques and numerical methods with which the problem of lubrication has been studied. In some numerical simulations of lubrication in joint replacements the effect of the shear stress of the synovial fluid is not considered since it is assumed to have a Newtonian behavior; however, other research has shown that by assuming a non-Newtonian behavior the lubrication process is significantly affected. With all this, incorporating all the factors that can affect lubrication in joint replacements, in numerical simulations to date is a challenge. Through various investigations, new materials, designs and analysis techniques are sought to increase the useful life of implants in order to reduce revision surgeries.

Introduction: The coagulation model has undergone changes to reach a consensus regarding the bleeding disorders that are seen in medical practice. The cellular model of coagulation is the most accepted that is available within this area of knowledge; however, it is little known and integrated into the curricula in Cuba. Objective: Create a web page that integrates the current elements about the cellular model of coagulation.Materials and methods: A technological innovation study was carried out between January 2017 and January 2018 in Ciego de Ávila province. It was developed in three stages: preparation, validation by experts and verification of effectiveness by users. For the design was used Drupal software, and HTML language. For the verification, there were two groups of experts to assess from the point of view of educational and computer relevance. Effectiveness was tested by a post-test applied to 106 medical students and 16 residents. Results: Adequate and very adequate assessments were obtained by consensus of experts, with originality (7.13 ± 1.24) and relevance (7.20 ± 1.74) being the best valued aspects. More than 90 % of users also rated the website as very satisfactory according to the contents treated and originality. During the post-test, 84.91 % of students and 66.67 % of residents confirmed the excellent rating. Conclusions: A web page was made with the ability to integrate the current elements about the cellular model of coagulation.

Introduction: Collagen is the most abundant structural protein in the human body, for this reason it is widely used in tissue engineering. When good mechanical performance of the final product is required, an attempt is made to maintain the highest long fiber content. For its characterization, techniques such as electrophoresis and infrared spectroscopy by Fourier transform are used, which allow to determine the purity and protein content of the same.Objectives: To characterize the collagen obtained from chicken and pork for later use in cardiovascular tissue engineering.Methods: The dissolution of the collagen source was performed in 5% acetic acid. Collagen was characterized using electrophoresis tests using the SDS-PAGE method and Fourier transform infrared spectrometry using the reflection analysis mode with the SPECAC ATR accessory and range from 600 to 4000 1/cm, to determine purity.Results: As a result of the work, type I and III collagens are obtained in the mixture of legs plus chicken crest. Also type I collagen in the samples of legs, chicken crests and pig skin.Conclusions: It was concluded that the raw materials used may be sources of collagen usable for the regeneration of cardiovascular tissue.

Bile acids, signaling molecules, maintain immune tolerance, their lack of control amplifies the inflammatory response from the hepato-intestinal system to other organs such as the lung. Liver dysfunction affects anatomical and functional structures of various organs and increases the risk of mortality due to cytotoxicity of bile acids. To describe the possible biomolecular evidence that could support bile acids pro-inflammatory agents of respiratory complications in Covid-19, a systematic and critical review of what has been published between 1946-2021 is presented, on the toxic actions of bile acids under conditions supraphysiological on the alveolar tissue. This could constitute the theoretical foundation that associates hepato-intestinal dysfunction-bile acids-alveolar damage in COVID-19, and would allow the hypothesis of considering the bile acids constituent of an axis that transversalizes the COVID-19 process, when participating actively in its clinical stages, and therefore being metabolomic agents that amplify or perpetuate the inflammatory response created by SARS-CoV2. Clinical studies are recommended for confirmation in the progress of acute respiratory distress syndrome.

This paper seeks to analyze the doctor-patient relationship within the framework of phenomenological bioethics. The phenomenology of disease starts from the subjective experience and analyses its invariable features, that is, those essential features that appear in the presence of disease. From this approach to disease, phenomenology provides elements that allow us to think critically about the doctor-patient relationship by recognizing the situated dimension of disease and the institutional context that modifies, alters, and re-signifies this situationality. In this way, it will be proposed that phenomenological bioethics provides a basis for public health by revealing the need to guarantee the care of the patient's vulnerability, which exceeds the scope of the merely pathological.

En aquest article presentaré la importància de revisar críticament els termes usuals utilitzats per a denominar al vincle que s'estableix entre qui gesta per a altres persones i els qui sol·liciten la gestació per a adquirir un bebè, amb la intenció de proposar un significant, al meu entendre, més adequat: relació de lloguer/substitució de l'embaràs. Per a això, en primer lloc, al·ludiré succintament a com l'ús del llenguatge en reproducció assistida no és neutral. En segon lloc, examinaré les nomenclatures més utilitzades en llengua castellana com per exemple “lloguer de ventre” i “gestació per substitució”, entre altres, i les analitzaré a través de dos criteris: el rol de la persona gestant i el tipus de relació entre qui gesta i qui/és volen ser mare/s i/o pare/s. Finalment, utilitzaré tots dos criteris per a proposar el nou significant.

La cerca de medicaments i vacunes per a ajudar a combatre la COVID-19 es va fer realitat després que l'Organització Mundial de la Salut (OMS) declarés la pandèmia de coronavirus el 11/03/2020. Aquest fet impactant en les nostres vides ha emfatitzat la importància de la ciència per al manteniment de la vida i la salut de tots. Les recomanacions de l'OMS s'han convertit en una constant en els telenotícies, sobretot perquè estem davant una situació nova i aterridora. D'acord amb la seva característica transnacional, la pandèmia reforça que la inversió en recerca en el camp mèdic i de la salut és vital per al manteniment i concreció dels drets fonamentals de la pròpia condició humana: la vida i la salut. En aquest context, aquest article té com a objectiu, sense pretendre esgotar el vast tema, identificar la prescripció de medicaments sense prova científica de la seva efectivitat en el tractament del COVID-19 com un conflicte d'interessos que genera impactes nocius en la societat.