Estudio de las propiedades antitumorales, antioxidantes y antiinflamatorias de los principales triterpenos del Aceite de Oliva Virgen utilizando modelos experimentales celulares de mama

[ES] El ácido oleanólico, ácido maslínico, uvaol y eritrodiol conforman el grupo de los triterpenos, un grupo de compuestos minoritarios presentes en la hoja del olivo, aceitunas y aceite de oliva virgen (AOV). Estos compuestos presentan propiedades antitumorales en diversos tipos de cáncer, pero hasta la fecha no hay ningún estudio de su capacidad de prevención o los efectos antitumorales en cáncer de mama. Entre los factores de riesgo descritos hasta ahora para padecer un cáncer de mama se encuentran la dieta y el estilo de vida. Y estos compuestos forman parte de la grasa principal utilizada en la dieta de los países mediterráneos, que son precisamente los que menor incidencia y mortalidad de cáncer de mama tienen. En esta tesis se evalúan los efectos antitumorales, antioxidantes y antiinflamatorios que estos triterpenos del AOV presentan en una línea tumoral invasiva de mama (MDA-MB-231) y en una línea epitelial de mama (MCF10A).[EN]Oleanolic acid, maslinic acid, uvaol and erytrodiol conform a triterpenic group of compounds, which could be found in leaf, olives and virgin olive oil (VOO). These compounds have antitumoral properties in different cancers but until now, there is not any study about the antitumor or preventive capacities of these compounds in breast cancer. Among the risk factors described for developing breast cancer are included diet and life style. These compounds are part of the main source of fat of Mediterranean diet, and interestingly, Mediterranean countries have lower incidence and mortality of breast cancer than others. In this thesis, antitumoral, antioxidant and anti-inflammatory effects of these VOO triterpenes are studied in an invasive breast cancer cell line (MDA-MB-231) and in a breast epithelial cell line (MCF10A).Tesis Univ. Jaén. Departamento de Ciencias de la salud, leída el 14 de noviembre de 201

Maslinic Acid Enhances Signals for the Recruitment of Macrophages and Their Differentiation to M1 State

The inflammatory process is involved in the genesis and evolution of different diseases like obesity, cardiovascular disease, and cancer. Macrophages play a central role in inflammation. In addition, they can regulate some stages of cancer development. Macrophages can polarize into M1 or M2 functional phenotype depending on the cytokines present in the tissue microenvironment. On the other hand, triterpenes found in virgin olive oil are described to present different properties, such as antitumoral and anti-inflammatory activity. The present study was designed to elucidate if the four major triterpenes found in virgin olive oil (oleanolic acid, maslinic acid, uvaol, and erythrodiol) are able to enhance M1 macrophage response which represents an important defense mechanism against cancer. Our results indicated that maslinic acid modulated the inflammatory response by enhancing the production of IL-8, IL-1α, and IL-1β; it promoted M1 response through the synthesis of IFN-γ; and finally it did not modify significantly the levels of NFκβ or NO. Overall, our results showed that maslinic acid could prevent chronic inflammation, which represents a crucial step in the development of some cancers

Smartphone App (2kmFIT-App) for Measuring Cardiorespiratory Fitness: Validity and Reliability Study

FBO research activity was supported by the Spanish Ministry of Economy and Competitiveness—MINECO/FEDER DEP2016-79512-R; the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 667302; the University of Granada, Plan Propio de Investigación 2016, Unit of Excellence on Exercise and Health (UCEES); the Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades, and European Regional Development Fund (ERDF), ref. SOMM17/6107/ UGR; the EXERNET Research Network on Exercise and Health in Special Populations (DEP2005-00046/ACTI); and the SAMID III network, RETICS, funded by the PN I+D+I 2017-2021 (Spain), ISCIII Sub-Directorate-General for Research Assessment and Promotion, the European Regional Development Fund (ERDF) (Ref. RD16/002). AN was supported by the Ministry of Economy and Competitiveness and the Instituto de Salud Carlos III through the CIBERFES (CB16/10/00239), the Seneca Foundation through the unit of excellence (Grant 19899/GERM/15), and the Ministry of Science Innovation and Universities RTI2018-093528-B-I00 (all of which are cofinanced by FEDER). CCS is supported by the Spanish Ministry of Science, Innovation and Universities (FJC2018-037925-I). The views expressed are those of the authors and do not reflect the official policy or position of the institutions they belong to.Background: There is strong evidence suggesting that higher levels of cardiorespiratory fitness (CRF) are associated with a healthier metabolic profile, and that CRF can serve as a powerful predictor of morbidity and mortality. In this context, a smartphone app based on the 2-km walk test (UKK test) would provide the possibility to assess CRF remotely in individuals geographically distributed around a country or continent, and even between continents, with minimal equipment and low costs. Objective: The overall aim of this study was to evaluate the validity and reliability of 2kmFIT-App developed for Android and iOS mobile operating systems to estimate maximum oxygen consumption (VO2max) as an indicator of CRF. The specific aims of the study were to determine the validity of 2kmFIT-App to track distance and calculate heart rate (HR). Methods: Twenty participants were included for field-testing validation and reliability analysis. The participants completed the UKK test twice using 2kmFIT-App. Distance and HR were measured with the app as well as with accurate methods, and VO2max was estimated using the UKK test equation. Results: The validity results showed the following mean differences (app minus criterion): distance (& ndash;70.40, SD 51.47 meters), time (& ndash;0.59, SD 0.45 minutes), HR (& ndash;16.75, SD 9.96 beats/minute), and VO2max (3.59, SD 2.01 ml/kg/min). There was moderate validity found for HR (intraclass correlation coefficient [ICC] 0.731, 95% CI & ndash;0.211 to 0.942) and good validity found for VO2max (ICC 0.878, 95% CI & ndash;0.125 to 0.972). The reliability results showed the following mean differences (retest minus test): app distance (25.99, SD 43.21 meters), app time (& ndash;0.15, SD 0.94 seconds), pace (& ndash;0.18, SD 0.33 min/km), app HR (& ndash;4.5, 13.44 beats/minute), and app VO2max (0.92, SD 3.04 ml/kg/min). There was good reliability for app HR (ICC 0.897, 95% CI 0.742-0.959) and excellent validity for app VO2max (ICC 0.932, 95% CI 0.830-0.973). All of these findings were observed when using the app with an Android operating system, whereas validity was poor when the app was used with iOS. Conclusions: This study shows that 2kmFIT-App is a new, scientifically valid and reliable tool able to objectively and remotely estimate CRF, HR, and distance with an Android but not iOS mobile operating system. However, certain limitations such as the time required by 2kmFIT-App to calculate HR or the temperature environment should be considered when using the app.Spanish Ministry of Economy and Competitiveness-MINECO/FEDER DEP2016-79512-REuropean Commission 667302University of Granada, Plan Propio de Investigacion 2016, Unit of Excellence on Exercise and Health (UCEES)Junta de AndaluciaEuropean Commission SOMM17/6107/UGR RD16/002EXERNET Research Network on Exercise and Health in Special Populations DEP2005-00046/ACTISAMID III network, RETICS - PN I+D+I 2017-2021 (Spain)ISCIII Sub-Directorate-General for Research Assessment and PromotionMinistry of Economy and Competitiveness CB16/10/00239Instituto de Salud Carlos III through the CIBERFES CB16/10/00239Fundacion Seneca 19899/GERM/15Ministry of Science Innovation and Universities - FEDER RTI2018-093528-B-I00Spanish Ministry of Science, Innovation and Universities FJC2018-037925-

Squalene stimulates a key innate immune cell to foster wound healing and tissue repair

Anti-inflammatory effects of virgin olive oil (VOO) have been described recently, along with its wound healing effect. One of the main minor compounds found in VOO is squalene (SQ), which also possesses preventive effects against skin damage and anti-inflammatory properties. The inflammatory response is involved in wound healing and manages the whole process by macrophages, among others, as the main innate cells with a critical role in the promotion and resolution of inflammation for tissue repair. Because of that, this work is claimed to describe the role that squalene exerts in the immunomodulation of M1 proinflammatory macrophages, which are the first cells implicate in recent injuries. Pro- and anti-inflammatory cytokines were analysed using TPH1 cell experimental model. SQ induced an increase in the synthesis of anti-inflammatory cytokines, such as IL-10, IL-13, and IL-4, and a decrease in proinflammatory signals, such as TNF-α and NF-κB in M1 proinflammatory macrophages. Furthermore, SQ enhanced remodelling and repairing signals (TIMP-2) and recruitment signals of eosinophils and neutrophils, responsible for phagocytosis processes. These results suggest that SQ is able to promote wound healing by driving macrophage response in inflammation. Therefore, squalene could be useful at the resolution stage of wound healing

Transcriptional organization and regulation of the Pseudomonas putida K1 type VI secretion system gene cluster

The type VI secretion system (T6SS) is an antimicrobial molecular weapon that is widespread in Proteobacteria and offers competitive advantages to T6SS-positive micro-organisms. Three T6SSs have recently been described in Pseudomonas putida KT2440 and it has been shown that one, K1-T6SS, is used to outcompete a wide range of phytopathogens, protecting plants from pathogen infections. Given the relevance of this system as a powerful and innovative mechanism of biological control, it is critical to understand the processes that govern its expression. Here, we experimentally defined two transcriptional units in the K1-T6SS cluster. One encodes the structural components of the system and is transcribed from two adjacent promoters. The other encodes two hypothetical proteins, the tip of the system and the associated adapters, and effectors and cognate immunity proteins, and it is also transcribed from two adjacent promoters. The four identified promoters contain the typical features of σ70-dependent promoters. We have studied the expression of the system under different conditions and in a number of mutants lacking global regulators. P. putida K1-T6SS expression is induced in the stationary phase, but its transcription does not depend on the stationary σ factor RpoS. In fact, the expression of the system is indirectly repressed by RpoS. Furthermore, it is also repressed by RpoN and the transcriptional regulator FleQ, an enhancer-binding protein typically acting in conjunction with RpoN. Importantly, expression of the K1-T6SS gene cluster is positively regulated by the GacS–GacA two-component regulatory system (TCS) and repressed by the RetS sensor kinase, which inhibits this TCS. Our findings identified a complex regulatory network that governs T6SS expression in general and P. putida K1-T6SS in particular, with implications for controlling and manipulating a bacterial agent that is highly relevant in biological control

An overall approach to food safety

Los cambios técnicos, económicos y culturales demandan una regulación, tanto a nivel comunitario como a nivel nacional, del nuevo concepto de seguridad alimentaria. El libro blanco sobre seguridad alimentaria plantea una coordinación al respecto, con el propósito de unificación de criterios para una mejor operabilidad. La alimentación y su regulación suponen un aspecto fundamental de la salud pública. En el ámbito organizativo de la Unión Europea, así como a nivel de la OMS (Organización Mundial de la Salud) y a nivel nacional, se están abordando unilateralmente la creación tanto de organismos como de organizaciones dedicadas a la seguridad alimentaria, para ofrecer garantías a los consumidores. Nuestro objetivo es revisar y comentar el enfoque integral que se plantea a nivel de seguridad alimentaria (desde la producción primaria, hasta el consumidor), el cual dará solución a la dispersión normativa. El enfoque integral vendría a paliar los inconvenientes planteados actualmente con el enfoque unilateral.Technical, economic and cultural changes require regulation of the new concept of food safety at both EU and national levels. The white book on food safety proposes coordination with the aim of unifying criteria for improved operability. Food and its regulation represent a fundamental aspect of public health. In order to provide consumers with guarantees, the unilateral creation of organisms and organizations dedicated to food safety is being undertaken in both the European Union, the WHO (World Health Organization) and in individual nations. Our aim is to review and comment on an overall approach to food safety, from primary production down to the consumer, which would resolve the regulatory dispersal and overcome the present difficulties resulting from the unilateral approach

Naturally lignan-rich foods: a dietary tool for health promotion?

Dietary guidelines universally advise adherence to plant-based diets. Plant-based foods confer considerable health benefits, partly attributable to their abundant micronutrient (e.g., polyphenol) content. Interest in polyphenols is largely focused on the contribution of their antioxidant activity to the prevention of various disorders, including cardiovascular disease and cancer. Polyphenols are classified into groups, such as stilbenes, flavonoids, phenolic acids, lignans and others. Lignans, which possess a steroid-like chemical structure and are defined as phytoestrogens, are of particular interest to researchers. Traditionally, health benefits attributed to lignans have included a lowered risk of heart disease, menopausal symptoms, osteoporosis and breast cancer. However, the intake of naturally lignan-rich foods varies with the type of diet. Consequently, based on the latest humans’ findings and gathered information on lignan-rich foods collected from Phenol Explorer database this review focuses on the potential health benefits attributable to the consumption of different diets containing naturally lignan-rich foods. Current evidence highlight the bioactive properties of lignans as human health-promoting molecules. Thus, dietary intake of lignan-rich foods could be a useful way to bolster the prevention of chronic illness, such as certain types of cancers and cardiovascular disease

La relación sujeto-objeto durante el proceso de educación energética en estudiantes de técnico medio en electricidad en Cuba

This paper is based on the determination, with a diagnostic study, of the insufficiencies presented by the students of intermediate Technician in Electricity, in the development of the energetic culture, which affects their integral training because in the curriculum design of the technical subjects of the specialty of Electricity it does not appear as content the aspects related to energy culture. As a solution to the problem, a study program is proposed for the treatment of energy culture in the students of intermediate Technician in Electricity, through the professional-pedagogical process developed in the Polytechnic School of Cuba. The social problem of science that arises in this work has great social connotation since its solution allows forming qualities of the personality of the intermediate technician in electricity linked to an adequate subject-object relationship, which allows it to adapt to the formative scenario where it develops and transforms to satisfy the social needs from its relationship with the environment, which is concrete in the subject-object relationship with the students’ energetic education. This result is sustained by the principles and regularities that characterize the Pedagogy of Technical and Professional Education.El trabajo parte de la determinación con un estudio diagnóstico, de las insuficiencias que presentan los estudiantes de Técnico Medio en Electricidad, en el desarrollo de la cultura energética, que afecta su formación integral debido a que en el diseño curricular de las asignaturas técnicas de la especialidad de Electricidad no aparece como contenidos los aspectos referidos a la cultura energética. Como vía de solución al problema se propone un programa de estudio para el tratamiento a la cultura energética en los estudiantes de Técnico Medio en Electricidad, a través del proceso pedagógico profesional que se desarrolla en la Escuela Politécnica de Cuba. El problema social de la ciencia que se plantea en este trabajo tiene gran connotación social, pues su solución permite formar cualidades de la personalidad del técnico medio en electricidad vinculadas a una adecuada relación sujeto – objeto, que le permite adaptarse al escenario formativo donde se desarrolla y transforma para satisfacer las necesidades sociales a partir de su relación con el medio, lo que se concreta en la relación sujeto – objeto con la educación energética de los estudiantes. Este resultado se sustenta en los principios y regularidades que caracterizan a la Pedagogía de la Educación Técnica y Profesional

Effectiveness of the mantente REAL program for preventing alcohol use in spanish adolescents

Mantente REAL is a school-based universal program to prevent drug use and other problematic behaviors specifically designed to be implemented in schools at the beginning of adolescence. This program, which is a culturally adapted version of the Keepin’ it REAL intervention, focuses on skills training for resisting social pressure to use drugs and improving psychosocial development. This study aims to evaluate the effectiveness of Mantente REAL on alcohol use in the Spanish context. The sample was composed of 755 adolescents from 12 state secondary schools in Spain, aged 11 to 15 (M = 12.24, SD = 0.56), 47.1% females. The 12 schools were randomly assigned to control and experimental groups, six to each condition. Pre-test and post-test questionnaires data were collected to evaluate the effectiveness of the program. The results indicated that a culturally adapted version of Mantente REAL was effective in preventing alcohol use among youth from northern and southern Spain. Students participating in the program demonstrated changes in the desired direction on alcohol frequency and intoxication episodes. Implications of these results regarding intervention programs aimed at preventing substance use in adolescence are discussed“Mantente REAL” es un programa universal que utiliza la escuela para prevenir el consumo de drogas y otras conductas problemáticas diseñado específicamente para ser implementado en las escuelas al comienzo de la adolescencia. Este programa, que es una versión culturalmente adaptada de la intervención Keepin’ it REAL, se centra en el entrenamiento de habilidades para resistir la presión social para consumir drogas y mejorar el desarrollo psicosocial. Este estudio tiene como objetivo evaluar la eficacia de “Mantente REAL” en el consumo de alcohol en el contexto español. La muestra estuvo compuesta por 755 adolescentes de 12 escuelas secundarias públicas en España, de 11 a 15 años (M = 12.24, DT = 0.56), el 47.1% mujeres. Las 12 escuelas fueron asignadas aleatoriamente a grupo control y experimental, seis en cada condición. Los datos se recopilaron a través de cuestionarios antes y después de la intervención para evaluar la eficacia del programa. Los resultados indicaron que la versión culturalmente adaptada de “Mantente REAL” fue eficaz para prevenir el consumo de alcohol entre los jóvenes del norte y sur de España. Los estudiantes que participaron en el programa demostraron cambios en la dirección deseada en la frecuencia del alcohol y los episodios de intoxicación. Se discuten las implicaciones de estos resultados con respecto a los programas de intervención destinados a prevenir el consumo de sustancias en la adolescenciaThis study was funded by the Global Center for Applied Health Research (Arizona State University) and supported by the Programa de Axudas á etapa posdoutoral da Xunta de Galicia (Consellería de Cultura, Educación e Ordenación Universitaria) and by FEDER/Ministerio de Ciencia, Innovación y Universidades – Agencia Estatal de Investigación (Grant PSI2015-65766-R) – under the Axuda para a consolidación e estruturación de unidades de investigación competitivas e outras accións de fomento nas universidades do SUG (GRC, 2018)S

A numerical model analysis of the tidal flows in the Bay of Algeciras, Strait of Gibraltar

A numerical model has been applied to study the tidal flows of the Bay of Algeciras in the eastern part of the Strait of Gibraltar, focusing on the M-2 semidiurnal constituent. The numerical model was satisfactorily validated against a comprehensive set of observations collected in the bay in the year 2011 and the model outputs were used for a detailed analysis of the local tidal circulation. The M-2 net (vertically integrated) transport across the mouth of the bay has an amplitude of 2.7 x 10(-3) Sv, while that of the sea surface signal is of similar to 30 cm and is in quadrature with this flow. However, the vertically integrated flow is the result of a pronounced baroclinic structure consisting of an upper (S 37.5) layers, whose associated transports are one order of magnitude higher. This reveals a noticeable internal tide that is characterized by an inward (to the head of the bay) propagation and a likely quarter-wave resonance. During the rising tide, Atlantic water from the strait comes in and produces the thickening of the upper (Atlantic) layer in the bay, while Mediterranean water of the lower layer is pushed out to join the Mediterranean water stream that is flowing to the west along the Strait of Gibraltar. During the falling tide, Atlantic water flows out of the bay and incorporates to the eastward flow in the strait. In this tidal phase, Mediterranean water flows into the bay. Therefore, Atlantic and Mediterranean waters accumulate in the bay during the rising and falling tide, respectively. This pattern is opposite to that observed in the strait, where the Mediterranean layer thickens during the rising tide and becomes thinner during the falling tide. This suggests that the internal tide in the bay is basically determined by the baroclinic forcing at its mouth imposed by the baroclinic tide of the Strait of Gibralta