The preventive and therapeutic consumption of meat enriched with carob fruit extract, rich in phenolic compounds, improves colonic antioxidant status in late-stage T2DM rats.

Oxidative stress is prevalent in Type 2 Diabetes Mellitus (T2DM) and has been associated with high meat consumption. Carob Fruit Extract (CFE) contains phenolic compounds, making it a suitable functional ingredient. Current study aims to evaluate the effect of CFE-enriched meat (CFE-meat) consumption on the antioxidant status of proximal and distal colon, and its relationship with fecal phenolic compounds in late-stage T2DM rats. Three groups of eight rats were studied: 1) D, fed control-meat; 2) ED, fed CFE-meat since the beginning of the study; 3) DE, fed CFE-meat after confirming T2DM. CFE-meat consumption reduces colonic oxidative stress mainly in the proximal section and helps to ameliorate glutathione metabolism and antioxidant score. Difference between ED and DE groups were associated with colon homeostasis and T2DM progression suggesting greater fermentation but lower absorption in the DE group. CFE appears as a promising tool to improve the antioxidant status observed in late-stage T2DM.

Analysis of immunohistomorphological changes in the colonic mucosa in a high-saturated fat and high-cholesterol fed streptozotocin/nicotinamide diabetic rat model.

The mucosal surface of gastrointestinal tract is lined with epithelial cells that establish an effective barrier between the lumen and internal environment through intercellular junctions, preventing the passage of potentially harmful substances. The "intestinal barrier function" consist of a defensive system that prevent the passage of antigens, toxins, and microbial products, while maintains the correct development of the epithelial barrier, the immune system and the acquisition of tolerance toward dietary antigens and intestinal microbiota. Intestinal morphology changes subsequent to nutritional variations, stress, aging or diseases, which can also affect the composition of the microbiota, altering the homeostasis of the intestine. A growing body of evidence suggests that alterations in intestinal barrier function favor the development of exaggerated immune responses, leading to metabolic endotoxemia, which seems to be the origin of many chronic metabolic diseases such as type 2 diabetes mellitus (T2DM). Although the mechanisms are still unknown, the interaction between dietary patterns, gut microbiota, intestinal mucosa, and metabolic inflammation seems to be a key factor for the development of T2DM, among other diseases. This chapter details the different techniques that allow evaluating the morphological and molecular alterations that lead of the intestinal barrier dysfunction in a T2DM experimental model. To induce both diabetic metabolic disturbances and gut barrier disruption, Wistar rats were fed a high-saturated fat and high-cholesterol diet and received a single dose of streptozotocin/nicotinamide. This animal model may contribute to clarify the understanding of the role of intestinal barrier dysfunction on the late-stage T2DM etiology.

Interacciones entre antineoplásicos orales y alimentos / Interactions between oral antineoplastic drugs and foods

Actualmente, la administración de antineoplásicos se realiza mayoritariamente por vía parenteral, sin embargo, la vía oral está cada vez más extendida en oncología por presentar beneficios importantes, como mayor comodidad o seguridad para el paciente. Sin embargo, la vía oral supone nuevos retos son las interacciones fármaco-alimentos (iAM), que puede dar lugar a importantes variaciones en la biodisponibilidad del fármaco. Esta mini-revisión se inicia comentando en una breve introducción algunos aspectos centrales sobre los inhibidores de tirosin-kinasa (TKI) y su mecanismo de acción y los planteamientos que han ido llevando a la aparición de TKI de segunda y tercera generación. Posteriormente y centrado en el tema interacción fármaco-alimentos se comentan algunos resultados y conclusiones de 47 artículos seleccionados de un total de 55 donde se describen distintos tipos de iAM que atañen a los TKI y otros antineoplásicos orales y que afectan a la biodisponibilidad de los mismos y los factores determinantes de dichas interacciones (p. ej. tipo de alimento, las reacciones físico-químicas entre fármaco y alimento, la fisiología postprandial). También resume algunos ejemplos bien definidos de dichas iAM, así como de las posibles consecuencias positivas de la coadministración de medicamentos y alimentos. La revisión termina con pautas futuras a considerar en este tipo de interacciones (estatus nutricional del paciente, farmacogenética relacionada con las isoformas del citocromo P450, cronoterapia y cronofarmacia relacionada con los genes CLOCK, efectos del consumo de compuestos bioactivos y perfiles dietéticos) y con unas conclusiones. Por todo ello, el conocimiento profesional de estos aspectos juega un papel fundamental a la hora de garantizar el éxito terapéutico. (AU)

Nowadays, the intravenous administration of antineoplastic drugs is more common than oral administration. However, oral chemotherapy on oncology is increasing due to some advantages, such as the comfort and safety of the patient. Nevertheless, oral administration implies new challenges as the food and drugs interactions that can change the drug’s bioavalability. Present mini-review stars with a short introduction in main aspects of the tyrosine kinase inhibitors (TKI), their action mechanism as well as the stages that have giving rise to the second and third generations of TKI are reviewed. Dealing with drugfood interaction the review discusses some results and conclusions derived from 47 articles selected from a total of 55 ones in which some food-drug interaction affecting bioavailability of TKI and other oral antineoplastics are described, as well as some determinant factors of such interactions (e.g. type of food, food and drug physicochemical reactions, postprandial physiology). Some well-defined and known examples of those interactions are commented as well the possible positive consequences of food and drug coadministration. The review ends with future remarks (e.g nutritional status, farmacogenetics related to the Cytochrome P450, chronotherapy and chronopharmacy related to CLOCK genes, the effects of bioactive compounds and dietary profiles) and with some conclusions. For all this, the professional knowledge and background seem fundamental in order to warrantee therapeutic success. (AU)

Cuando aprender se transforma en un juego y enseñar es poner las reglas del mismo para que ocurra. Una visión con una perspectiva de ilusión después de cuarenta y ocho años en la enseñanza / When learning becomes a game and teaching consists in setting the rules to allow it happen. A vision from a perspective with illusion after teaching for forty-eight years

Es este brevísimo artículo un flash, una visión personal de la enseñanza y de la importancia de la entrega y la innovación docente, utilizando lo que se tiene a mano, aunque sea en el ambiente inhóspito del confinamiento. Este apunte es antesala de otro artículo en donde se presentan la hipótesis, objetivos y medios para llevar a cabo el proyecto Docente “Los errores del profesor mejoran el aprendizaje del alumno” y en el que se expondrán de forma resumida algunos resultados preliminares obtenidos, a fin de que sirva de semilla para promover proyectos similares que mejores la calidad y resultados de la enseñanza.(AU)

This very brief article is a flash, a personal vision of teaching and the importance of delivery and teaching innovation, using what we have at hand and in the inhospitable environment of confinement. This note is a prelude to another article where the hypothesis, objectives and means are presented to carry out the Teaching project "Teacher mistakes improve student learning", in which some preliminary results obtained will be summarized, to serve as a seed to promote similar projects that improve teaching quality and results.(AU)

Whole Alga, Algal Extracts, and Compounds as Ingredients of Functional Foods: Composition and Action Mechanism Relationships in the Prevention and Treatment of Type-2 Diabetes Mellitus.

Type-2 diabetes mellitus (T2DM) is a major systemic disease which involves impaired pancreatic function and currently affects half a billion people worldwide. Diet is considered the cornerstone to reduce incidence and prevalence of this disease. Algae contains fiber, polyphenols, ω-3 PUFAs, and bioactive molecules with potential antidiabetic activity. This review delves into the applications of algae and their components in T2DM, as well as to ascertain the mechanism involved (e.g., glucose absorption, lipids metabolism, antioxidant properties, etc.). PubMed, and Google Scholar databases were used. Papers in which whole alga, algal extracts, or their isolated compounds were studied in in vitro conditions, T2DM experimental models, and humans were selected and discussed. This review also focuses on meat matrices or protein concentrate-based products in which different types of alga were included, aimed to modulate carbohydrate digestion and absorption, blood glucose, gastrointestinal neurohormones secretion, glycosylation products, and insulin resistance. As microbiota dysbiosis in T2DM and metabolic alterations in different organs are related, the review also delves on the effects of several bioactive algal compounds on the colon/microbiota-liver-pancreas-brain axis. As the responses to therapeutic diets vary dramatically among individuals due to genetic components, it seems a priority to identify major gene polymorphisms affecting potential positive effects of algal compounds on T2DM treatment.

Alimentos funcionales como alternativa para incrementar la ingesta de fibra dietética y proantocianidinas. Posibles efectos sobre la microbiota intestinal / Functional foods as an alternative to increase the consumption of dietary fiber and proanthocyanidins. Possible effects on the gut microbiota

INTRODUCCIÓN: La fibra dietética es un componente nutricional fundamental, destacando su acción moduladora sobre la microbiota intestinal. El consumo de alimentos de origen vegetal y por ende el de la fibra dietética, tanto en España como en otros muchos países, se ha reducido. Los alimentos funcionales parecer ser una buena alternativa alimentaria para paliar este déficit. OBJETIVOS: 1. Revisar el concepto de fibra dietética. 2. Conocer la situación real de consumo de fibra dietética en España y en otros países europeos en diferentes intervalos de edad. 3. Estudiar los efectos principales del consumo de la fibra dietética y en particular de proantocianidinas (PA) con respecto a la microbiota intestinal. 4. Revisar el concepto de alimento funcional y las posibilidades de incorporar fibra dietética y PA a diferentes alimentos de alto consumo. MATERIALES Y MÉTODOS: El principal motor de búsqueda ha sido la base de datos PubMed, aunque también se ha hecho uso de Google Scholar, ResearchGate y sciELO. Se han revisado artículos científicos, libros, e informes en fuentes fiables y contrastadas. También se han consultado documentos oficiales, como el Informe de Consumo de Alimentos en España de 2018, publicado por el Ministerio de Agricultura, Pesca y Alimentación; la página web de la AESAN y los Reglamentos vigentes de alimentación. RESULTADOS: Se confirma que las ingestas reales de fibra dietética en distintos países de la Unión Europea incluyendo a España, son inferiores de las ingestas dietéticas de referencia (IDR) para la mayoría de los intervalos de edad. Esta inadecuación se exacerba al aumentar la edad. En el artículo se proponen estrategias para alcanzar las IDR, en particular incorporando fibra dietética en alimentos de consumo muy frecuente (p.ej. matrices cárnicas). Se revisa el concepto de alimento funcional y aquellas publicaciones que estudian los efectos de las proantocianidinas (PA) en la recuperación de la microbiota intestinal a otra similar a la que poseen individuos sanos. Se comentan los mecanismos mediante los cuales la microbiota es capaz de hidrolizar las PA y liberar metabolitos con acción protectora intestinal y sistémica. CONCLUSIONES: Dado que modificar los hábitos de consumo por parte de la población parece tarea difícil, se plantea la alternativa de formular alimentos funcionales enriquecidos en fibra dietética y PA. La evidencia positiva creciente observada en cárnicos funcionales enriquecidos con fibra de algarrobo rica en PA sugiere la importancia de continuar investigando en este campo y de iniciar la formulación de nuevos alimentos funcionales (p.ej. cereales, cremas, gominolas, etc.) enriquecidos en este tipo de fibra dietética rica en PA, que propicien un adecuado consumo y los beneficios de sus propiedades funcionales

INTRODUCTION: Dietary fiber is an essential nutritional component, which, its modulating action on gut microbiota must be outlined. The consumption of foods of vegetable origin, and therefore, the dietary's fiber consumption, in Spain, as well as in some other countries, has been reduced. Functional foods have been found to be a great food alternative to solve this dietary deficiency. OBJECTIVES: 1. To review dietary's fiber concept. 2. To get to know the real consumption situation of dietary fiber in Spain, in other European countries; in different age groups. 3. To study the main effects related to dietary fiber consumption, particularly the effects of PA with respect to the gut microbiome. 4. To revise functional foods concept, and the possibilities of incorporating dietary fiber and PA into different highly consumed foods. MATERIALS AND METHODS: The main research engine has been the PubMed database, although it has also been used Google Scholar, ResearchGate and SciELO. At the same time scientific articles, books and reports from reliable and corroborated sources have been revised. In addition, official documents have been consulted, as the 2018 Spanish Foods Consumption Report, published by the Spanish Ministry of Agricultura, Pesca y Alimentación; the AESAN website, and the current food regulations. RESULTS: It is proved that the real dietary fiber intakes in different European countries, including in Spain, are far below the dietary reference intakes (DRI), in most of the studied age ranges. In this article, there are proposed strategies to achieve these DRI, particularly adding dietary fiber into highly consumed foods (i.e. meat matrices). The concept of functional foods is reviewed, and some of the most relevant publications reporting the effects of proanthocyanidins (PA) in relationship to the gut microbiome recovery, and its change to another related to the healthy people's microbiome. The mechanisms by which the gut microbiome is able to hydrolyse the PA, and consequently release metabolites with gut and systemic protective activity, is also discussed. CONCLUSIONS: Given that modifying the population consumption habits seems a difficult task, the alternative of formulating functional foods enriched with dietary fiber and PA it is suggested. The increasing positive evidence observed derived from the consumption of functional meat products to which carob fruit fiber has been added, suggests the relevance of continuing investigating on this field, and therefore start the formulation of new functional foods (i.e. cereals, creams, sweets, etc.) enriched with this PA-enriched fiber, which would lead to an adequate dietary fiber consumption and the benefits from its functional functions

Can Meat and Meat-Products Induce Oxidative Stress?

High meat and meat-products consumption has been related to degenerative diseases. In addition to their saturated fatty acids and cholesterol contents, oxidation products generated during their production, storage, digestion, and metabolization have been largely implicated. This review begins by summarizing the concept of meat and meat-products by the main international regulatory agencies while highlighting the nutritional importance of their consumption. The review also dials in the controversy of white/red meat classification and insists in the need of more accurate classification based on adequate scores. Since one of the negative arguments that meat receives comes from the association of its consumption with the increase in oxidative stress, main oxidation compounds (malondialdehyde, thermaloxidized compounds, 4-hydroxy-nonenal, oxysterols, or protein carbonyls) generated during its production, storage, and metabolization, are included as a central aspect of the work. The review includes future remarks addressed to study the effects meat consumption in the frame of diet-gene interactions, stressing the importance of knowing the genetic variables that make individuals more susceptible to a possible oxidative stress imbalance or antioxidant protection. The importance of consumed meat/meat-products in the frame of a personalized nutrition reach in plant-food is finally highlighted considering the importance of iron and plant biophenols on the microbiota abundance and plurality, which in turn affect several aspects of our physiology and metabolism.

Virus zoonóticos emergentes en un mundo globalizado: SARS-CoV-2/COVID-19 y sus implicaciones en salud pública y en la industria alimentaria / Emerging zoonotic viruses in a globalized world: SARS-CoV-2/COVID-19 and its implications for public health and the food industry

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Cuando el silicio transmuta en oro / When silicon transmutes in gold

Este trabajo describe las virtudes de una investigación centrada en el silicio, uno de los ingredientes más importantes pero menos conocidos de la cerveza, y su acción protectora a nivel neurodegenerativo. Entre los varios factores que contribuyen a la inducción y desarrollo de la enfermedad de Alzheimer, se encuentra el aluminio el cual tiende a concentrarse en el cerebro e inducir, entre otros mecanismos, alteraciones prooxidantes e inflamatorias. El silicio al bloquear esos efectos negativos, se convierte en un ingrediente estrella, que en términos alquimistas sugiere que puede transmutar en oro

This article describes the virtues of a research focused on silicon, one of the most important but least known ingredients in beer, and its protective action at the neurodegenerative level. Among the various factors contributing to the Alzheimer's disease induction and development, aluminum, by concentrating in brain induces, among other mechanisms, pro-oxidant and inflammatory disorders. Silicon, by blocking these negative effects, becomes a star ingredient, which in alchemist terms suggests that has the property to transmute into gold

Antioxidant and Hepatoprotective Effects of Croton hypoleucus Extract in an Induced-Necrosis Model in Rats.

The aim of this study was to evaluate the antioxidant and hepatoprotective activity of Croton hypoleucus (EC). The present work reports the first pharmacological, toxicological, and antioxidant studies of EC extract on liver injury. Liver necrosis was induced by thioacetamide (TAA). Five groups were established: Croton Extract (EC), thioacetamide (TAA), Croton extract with thioacetamide (EC + TAA), vitamin E with thioacetamide (VE + TAA) and the positive control and vehicle (CT). For EC and EC + TAA, Wistar rats (n = 8) were intragastrically pre-administered for 4 days with EC (300 mg/kg.day) and on the last day, EC + TAA received a single dose of TAA (400 mg/kg). At 24 h after damage induction, animals were sacrificed. In vitro activity and gene expression of superoxide dismutase (SOD), catalase (Cat), and Nrf2 nuclear factor were measured. The results show that EC has medium antioxidant properties, with an IC50 of 0.63 mg/mL and a ferric-reducing power of 279.8 µM/mg. Additionally, EC reduced hepatic damage markers at 24 h after TAA intoxication; also, it increased SOD and Cat gene expression against TAA by controlling antioxidant defense levels. Our findings demonstrated the hepatoprotective effect of EC by reducing hepatic damage markers and controlling antioxidant defense levels. Further studies are necessary to identify the mechanism of this protection.

The Nutritional Components of Beer and Its Relationship with Neurodegeneration and Alzheimer's Disease.

The prevalence of degenerative diseases has risen in western countries. Growing evidence suggests that demenia and other cognition affectations are associated with ambient factors including specific nutrients, food ingredients or specific dietary patterns. Mediterranean diet adherence has been associated with various health benefits and decreased risk of many diseases, including neurodegenerative disorders. Beer, as part of this protective diet, contains compounds such as silicon and hops that could play a major role in preventing brain disorders. In this review, different topics regarding Mediterranean diet, beer and the consumption of their main compounds and their relation to neurological health have been addressed. Taking into account published results from our group and other studies, the hypothesis linking aluminum intoxication with dementia and/or Alzheimer's disease and the potential role of regular beer has also been considered. Beer, in spite of its alcohol content, may have some health benefits; nonetheless, its consumption is not adequate for all subjects. Thus, this review analyzed some promising results of non-alcoholic beer on several mechanisms engaged in neurodegeneration such as inflammation, oxidation, and cholinesterase activity, and their contribution to the behavioral modifications induced by aluminum intoxication. The review ends by giving conclusions and suggesting future topics of research related to moderate beer consumption and/or the consumption of its major compounds as a potential instrument for protecting against neurodegenerative disease progression and the need to develop nutrigenetic and nutrigenomic studies in aged people and animal models.

Interacciones entre antineoplásicos orales y alimentos / Interactions between oral antineoplastic drugs and foods

Actualmente, la administración de antineoplásicos se realiza mayoritariamente por vía parenteral, sin embargo, la vía oral está cada vez más extendida en oncología por presentar beneficios importantes, como mayor comodidad o seguridad para el paciente. Sin embargo, la vía oral supone nuevos retos son las interacciones fármaco-alimentos (iAM), que puede dar lugar a importantes variaciones en la biodisponibilidad del fármaco. Esta mini-revisión se inicia comentando en una breve introducción algunos aspectos centrales sobre los inhibidores de tyrosin-kinase (TKI) y su mecanismo de acción y los planteamientos que han ido llevando a la aparición de TKI de segunda y tercera generación. Posteriormente y centrado en el tema interacción fármaco-alimentos comenta algunos resultados y conclusiones de 34 artículos seleccionados de un total de 39 donde se describen distintos tipos de iAM que atañen a los TKI y otros antineoplásicos orales y que afectan a la biodisponibilidad de los mismos y los factores determinantes de dichas interacciones (p. ej. tipo de alimento, las reacciones físico-químicas entre fármaco y alimento, la fisiología postprandial). También resume algunos ejemplos bien definidos de dichas iAM, así como de las posibles consecuencias positivas de la coadministración de medicamentos y alimentos. La revisión termina con pautas futuras a considerar en este tipo de interacciones (estatus nutricional del paciente, farmacogenética relacionada con las isoformas del citocromo P450, cronoterapia y cronofarmacia relacionada con los genes CLOCK, efectos del consumo de compuestos bioactivos y perfiles dietéticos) y con unas conclusiones. Por todo ello, el conocimiento profesional de estos aspectos juega un papel fundamental a la hora de garantizar el éxito terapéutico

Nowadays, the intravenous administration of antineoplastic drugs is more common than oral administration. However, oral chemotherapy on oncology is increasing due to some advantages, such as the comfort and safety of the patient. Nevertheless, oral administration implies new challenges as the food and drugs interactions that can change the drug's bioavalability. Present mini-review stars with a short introduction in main aspects of the tyrosine kinase inhibitors (TKI), their action mechanism as well as the stages that have giving rise to the second and third generations of TKI are reviewed. Dealing with drugfood interaction the review discusses some results and conclusions derived from 47 articles selected from a total of 55 ones in which some food-drug interaction affecting bioavailability of TKI and other oral antineoplastics are described, as well as some determinant factors of such interactions (e.g. type of food, food and drug physicochemical reactions, postprandial physiology). Some well-defined and known examples of those interactions are commented as well the possible positive consequences of food and drug coadministration. The review ends with future remarks (e.g nutritional status, farmacogenetics related to the Cytochrome P450, chronotherapy and chronopharmacy related to CLOCK genes, the effects of bioactive compounds and dietary profiles) and with some conclusions. For all this, the professional knowledge and background seem fundamental in order to warrantee therapeutic success

Can Carob-Fruit-Extract-Enriched Meat Improve the Lipoprotein Profile, VLDL-Oxidation, and LDL Receptor Levels Induced by an Atherogenic Diet in STZ-NAD-Diabetic Rats?

Carob fruit extract (CFE) has shown remarkable in vitro antioxidant properties and reduces postprandial hyperglycemia and hyperlipidemia in healthy animals. Development of functional meat products that contain bioactive components are presented as a great nutritional strategy. Until now, the effect of the consumption of restructured meat enriched with CFE in a murine model of diabetes has not been investigated. The objective of this study was to evaluate the effect on glycemia, lipemia, lipoprotein profile, Ldlr, arylesterase (AE), and very low-density lipoproteins (VLDL) and liver oxidation in streptozotocin-nicotinamide (STZ-NAD) growing Wistar diabetic rats fed restructured meat in the frame of a high cholesterol/high saturated-fat diet. In the present study, three groups (D, ED and DE) were fed cholesterol-enriched (1.4% cholesterol and 0.2% cholic acid) and high saturated-fat diets (50% of total energy from fats and 20.4% from saturated fatty acids). Rats were subjected to a STZ-NAD administration at the 3rd week. Group D did not receive CFE, while ED and DE rat groups received CFE before and after the diabetic induction, respectively. After eight weeks, D rats showed hyperglycemia and hypercholesterolemia, an increased amount cholesterol-enriched VLDL (ß-VLDL), IDL and LDL particles and triglyceride-enriched HDL. ED and DE partially blocked the hypercholesterolemic induction with respect to D group (p < 0.001) and improved glycemia, cholesterol levels, lipoprotein profile, Ldlr, plasma AE activity and liver oxidation (p < 0.001). Fecal fat, moisture and excretion were higher while dietary digestibility was lower in ED and DE vs. D counterparts (p < 0.001). In conclusion, CFE-enriched meat shows, for the first time, hypoglycemic and hypolipidemic effects in STZ-NAD animals fed high cholesterol/high saturated-fat diets. Likewise, it manages to reverse possible diabetes lipoprotein alterations if CFE-enriched meat is consumed before pathology development or improves said modifications if Type 2 Diabetes Mellitus is already established.

Effect of Extract and Ellagic Acid from Geranium schiedeanum on the Antioxidant Defense System in An Induced-Necrosis Model.

Geranium schiedeanum has been used in traditional therapies as an antiseptic, antipyretic, and as analgesic. The present study was designed to evaluate the pretreatment with G. schiedeanum total extract (GS) and its active metabolites on stimulating the endogenous antioxidant defense system (EADS): catalase (Cat), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione reduction index (RI GSH/GSSG) in rat liver treated with a sublethal dose (6.6 mmol/Kg) of thioacetamide (TAA) in order to probe the capacity of GS and the active compounds to reduce liver injury. This was assessed by measuring aspartate aminotransferase (AST), alanine aminotransferase (ALT), and total bilirubin (BILT) in rats pretreated or not with TAA, and pretreated or not with GS and its metabolites. The results showed that GS was able to induce the production of EADS enzymes, increasing redox index GSH/GSSG at 24 and 48 h after intoxication, and both the extract and the ellagic acid exhibited a significant reduction of hepatic damage markers. Our data confirmed the hepatoprotective effect of GS and its metabolites, like ellagic acid, support the possible use of this extract in the treatment of liver injury.

XVII Curso Internacional Inmunonutrición en la Salud y el Bienestar / No disponible

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Lipoprotein Profile in Aged Rats Fed Chia Oil- or Hydroxytyrosol-Enriched Pork in High Cholesterol/High Saturated Fat Diets.

Restructuring pork (RP) by adding new functional ingredients, like Chia oil (one of the richest natural source of α-linolenic acid) or hydroxytyrosol (HxT) (potent antioxidant), both with hypolipidemic activities, is one of the strategies that may help to reduce the potential negative effects of high meat products consumption. The aim of this study was to evaluate the Chia oil- or HxT-enriched-RP effect on the lipoprotein profile of aged rats fed high-fat, high-energy, and cholesterol-enriched diets. RP samples were prepared by mixing lean pork and lard with or without Chia oil (152.2 g/kg fresh matter) or HxT (3.6 g/kg fresh matter). Diets were prepared by mixing a semisynthetic diet with freeze-dried RP. Groups of 1-year male Wistar rats were fed the following experimental diets for 8 weeks: C, control-RP diet; HC, cholesterol-enriched-RP diet; and Chia oil-RP (CHIA) and HxT, Chia oil- or hydroxytyrosol-RP, cholesterol-enriched diet. Plasma lipid, lipoprotein profile, SREBP-1c protein, and low-density lipoproteins (LDL) receptor gene (Ldlr) expressions were evaluated. Compared to C diet, the HC diet increased plasma cholesterol, triglycerides, free fatty acids, total lipids, and SREBP-1c expression, but reduced Ldlr expression and significantly modified the lipoprotein profile, giving rise to the presence of high levels of atherogenic cholesterol-enriched very low-density lipoproteins (VLDL) particles. Compared to the HC diet, the HxT diet did not produce significant changes in feed intake but it reduced the body weight. Chia oil and HxT partially arrested the negative effects of the high-fat, high-energy, and cholesterol-enriched meat-based diets on lipemia and lipoproteinemia, mostly by reducing the amount of cholesterol content in VLDL (60% and 74% less in CHIA and HxT vs. HC, respectively) and the VLDL total mass (59% and 63% less in CHIA and HxT vs. HC, respectively). Free fatty acids (FFA) significantly correlated with adipose tissue weight and VLDL total mass (both p < 0.05), and plasma triglycerides, phospholipids, total lipids, and SREBP-1c (all p < 0.001), suggesting the important role of FFA in lipoprotein metabolism. Results support the recommendation to include these ingredients in pork products addressed to reduce the presence of increased atherogenic particles in aged people at CVD risk consuming large amounts of pork.

Mesa Redonda sobre Interacciones Fármaco-nutrientes. RANF 15 de marzo de 2018 / No disponible

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Interacciones adversas de alimentos y medicamentos: tipos, su identificación y actualización / Food and drug adverse interactions: types, identification and update

En esta publicación se revisan aspectos centrales a considerar sobre los diferentes tipos de interacciones entre alimentos y/o nutrientes y fármacos. En la investigación clínica de un nuevo medicamento se deben estudiar las posibles interacciones con alimentos tanto fisicoquímicas como farmacocinéticas (en la absorción, vías metabólicas, transporte y excreción) y farmacodinámicas, en particular aquellas más relevantes por la gravedad de sus efectos. Sus evidencias deben recogerse y describirse en la información del medicamento (fichas técnicas y prospecto).Es fundamental que todo paciente en tratamiento con alguno de los fármacos en los que se hayan observado interaccionescon alimentos reciba información precisa sobre aquellos alimentos que debe evitar/reducir consumir. El farmacéutico asistencial debe proporcionar esta información, reforzando la trasmitida por el médico prescriptor y la contenida en los prospectos de los medicamentos respectivos. Por ello, todo esfuerzo que se haga para evitar las interacciones adversas será inútil si no se consigue evitar un episodio fatal. En las tomas de medicamentos por vía oral debe recomendarse su ingestión con agua, en cantidad generosa (un vaso de 200mL). No se debe recomendar la ingestión con leche o con zumos de frutas, excepto indicación expresa del médico, según el tipo de medicamento.El conocimiento de las interacciones de alimentos con medicamentos se debe complementar con las actividades de farmacovigilancia. Así, la atenta actuación del profesional sanitario, en general, y del farmacéutico y enfermero, en particular, debe permitir identificar nuevas interacciones con alimentos y evitar las ya conocidas, ya que son los profesionales más cercanos al paciente

In this publication some central aspects to consider about interactions between food or nutrients and drugs are reviewed. In the clinical investigation of a new drug the possible interactions with food, both physicochemicals and pharmacokinetics (in absorption, metabolic pathways, transport and excretion) and pharmacodynamic (in particular those relevant due to the severity of their effects) should be studied. Its evidence must be collected and described in the drug information (summary of product characteristics and patient information leaflet). It is essential that any patient in treatment with any of the drugs in which food interactions have been observed receives accurate information on the type of food whose consumption should be avoided or reduced. The healthcare pharmacist must provide this information, reinforced by the Doctor Prescriber and contained in the leaflets of the respective medicinal products. Therefore, any effort to avoid adverse interactions will be futile if a fatal episode is not avoided. Oral intake of medicines mouth should be recommended for ingestion with water, in a generous amount (a glass of 200 mL). Ingestion with milk or fruit juices should not be recommended, except for the physician's express indication, depending on the type of medication. Knowledge of food interactions with drugs should be supplemented with pharmacovigilance activities. Thus, the attentive action of the health professional, in general, and the pharmacist and nurse, in particular, should allow identifying new interactions with food, and avoiding the already known ones, since they are the professionals closest to the patient

La nutrición artificial, una labor multidisciplinar. El papel de las revistas de nutrición en la difusión de su importancia / Artificial Nutrition, a multidisciplinary task. The role of the Nutrition journals in its diffusion

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