26 research outputs found

    Are Gluten-Free Foods Just for Patients with a Gluten-Related Disease?

    Get PDF
    Gluten, the set of wheat proteins that gives properties for food processing, is the cause of celiac disease (CD), and patients require a gluten-free diet lifelong. There are other bad-called gluten-related diseases as non-celiac gluten sensitivity and irritable bowel syndrome, for which triggering compounds are unknown, while wheat allergies and carbohydrate intolerances are associated with other wheat proteins and fructans, respectively. The boundaries of each disease are not clear, inducing confusion for diagnosis and dilemma about the right diet. Nowadays, the people who are currently in a gluten-free diet exceed several times the expected number of those requiring dietary gluten exclusion. It is because people consider themselves as affected and dangerously decide to self-diagnose as gluten intolerant and adopt a gluten-free diet. The alternative compounds used in gluten-free foods to obtain the technological properties given by gluten could induce problems in some disease conditions or lead to undernutrition especially in children and adolescents. It is because some gluten-free foodstuffs are limited in vitamins and minerals and contain more fat and sodium than their conventional wheat analogues. Therefore, gluten-free is not a good option for persons without diagnosis; it should be understood as a therapy, prescribed and followed by specialists

    Screening the extraction process of phenolic compounds from pressed grape seed residue: Towards an integrated and sustainable management of viticultural waste

    Get PDF
    The integrated valorisation of waste from the food chain to obtain value-added compounds with biological functionality will facilitate the transition to the era of a sustainable bioeconomy. To this end, an efficient matrix solid-phase dispersion (MSPD) extraction method was developed and optimized, using experimental factorial design and response surface methodology, for polyphenols recovery from pressed grape seeds obtained after the extraction of essential oils by cold pressing. Gallic, dihydroxybenzoic, p-coumaric and trans-ferulic acid, naringin, resveratrol, quercetin and kaempferol were quantified at 2.1–295 μg g−1 by capillary liquid chromatography coupled to a diode array detector and a mass analyser (cLC-DAD-MS). Furthermore, total antioxidant activity, free radical scavenging and lipid peroxidation suppression, together with the inhibition of beta-amyloid (Αβ42) protein aggregation, considered one of the main pathological effects of Alzheimer's disease, were evaluated. Potent lipid peroxidation inhibition (IC50 0.238 ± 0.003 ng g−1) was observed, along with the reduction of Αβ42 fibril width (9.4–54.8%) and aggregation. The results presented proved that the MSPD extraction method could be considered as an efficient and sustainable methodology to produce phenolic-rich extracts that may serve as an alternative antioxidant and neuroprotective ingredient for the food or pharmaceutical formulations, leading to the cascade valorisation of winery by-products

    Selenium serum levels in patients with SARS-CoV-2 infection: a systematic review and meta-analysis

    Get PDF
    The nutritional status is a determinant of the immune response that promotes a cellular homeostasis. In particular, adequate selenium levels lead to a better antioxidant and immune response. The aim of this work is to assess whether blood selenium levels, at time of SARS-CoV-2 infection, have an impact on the development and severity of COVID-19. A systematic review and meta-analysis of comparative and descriptive studies using MeSH terms, selenium and COVID-19 was performed. We searched bibliographic databases up to 17 July 2022 in PubMed and ScienceDirect. Studies that reported data on blood selenium levels were considered. A total of 629 articles were examined by abstract and title, of which 595 abstracts were read, of which 38 were included in the systematic review and 11 in the meta-analysis. Meta-analysis was conducted to mean difference (MD) with a 95 % confidence interval (CI), and heterogeneity was tested by I2 with random factors with a MD between selenium levels, mortality, morbidity and healthy subjects with a P-value of 0⋅05. Selenium levels were higher in healthy people compared to those in patients with COVID-19 disease (six studies, random effects MD: test for overall effect Z = 3⋅28 (P = 0⋅001), 97 % CI 28⋅36 (11⋅41–45⋅31), P < 0⋅00001), but without difference when compared with the degree of severity in mild, moderate or severe cases. In conclusion, the patients with active SARS-CoV-2 infection had lower selenium levels than the healthy population. More studies are needed to evaluate its impact on clinical severity through randomised clinical trials

    Valorisation of black mulberry and grape seeds: Chemical characterization and bioactive potential

    Get PDF
    Grape (Vitis vinifera L. var. Albariño) and mulberry (Morus nigra L.) seeds pomace were characterized in terms of tocopherols, organic acids, phenolic compounds and bioactive properties. Higher contents of tocopherols (28 ± 1 mg/100 g fw) were obtained in mulberry, whilst grape seeds were richer in organic acids (79 ± 4 mg/100 g fw). The phenolic analysis of hydroethanolic extracts characterised grape seeds by catechin oligomers (36.0 ± 0.3 mg/g) and mulberry seeds by ellagic acid derivatives (3.14 ± 0.02 mg/g). Both exhibited high antimicrobial activity against multiresistant Staphylococcus aureus MIC = 5 mg/mL) and no cytotoxicity against carcinogenic and non-tumour primary liver (PLP) cells. Mulberry seeds revealed the strongest inhibition (p lt 0.05) against thiobarbituric reactive substances (IC50 = 23 ± 2 µg/mL) and oxidative haemolysis (IC50 at 60 min = 46.0 ± 0.8 µg/mL). Both seed by-products could be exploited for the developing of antioxidant-rich ingredients with health benefits for industrial application.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support by national funds FCT/MCTES to CIMO (UIDB/00690/2020); C. L. Roriz PhD’s grant (SFRH/BD/117995/2016), L. Barros to FCT, P.I., through the institutional scientific employment program-contract for their contract and the individual scientific employment program-contract for S.A. Heleno’s contract. To Eramus + grant (P BRAGAC01) and the Complutense University of Madrid, Spain for the preodoctoral grant [CT17/17-CT18/17] of E. Gómez-Mejía. In addition, to the Complutense University of Madrid, Spain for the preodoctoral grant [CT17/17-CT18/17] of E. Gómez-Mejía. In addition, to the companies Ponto Agricola Lda. (Portugal) and Terras Gaudas (Spain) for providing the sample by-products. The authors are grateful to FEDER-Interreg España-Portugal programme for financial support through the project 0377_Iberphenol_6_E.info:eu-repo/semantics/publishedVersio

    Innovación del Diseño para el Desarrollo Social

    Get PDF
    Una labor de síntesis alrededor de la gran temática de este libro que surge a partir de una serie de reflexiones y propuestas encaminadas desde la innovación del diseño para el desarrollo social, refleja una invitación al lector para enunciar a partir de su lectura nuevas discusiones sobre el quehacer del diseño con una perspectiva de innovación para este tipo de desarrollo, es pues este texto una invitación a enunciar nuevos retos y diálogos partiendo de reconocer al desarrollo social como uno de los pilares fundamentales desde la Organización de las Naciones Unidas (ONU) como parte fundamental para garantizar el mejoramiento de la vida de las personas. Desde la disciplina del diseño y retomado como eje para su discusión se pretendería establecer una serie de reflexiones y acciones que permitan atender situaciones para grupos minoritarios y vulnerables, así como apoyar esfuerzos encaminados a mejorar la calidad de vida de los integrantes de grupos y sociedades establecidas y recuperar el patrimonio cultural como parte fundamental de las identidades culturales y por tanto de la historia de la humanidad.A lo largo de la historia, el diseño, en cualquiera de sus manifestaciones, ha estado presente en todos los ámbitos. Se ha convertido en una disciplina que evoluciona al ritmo de las sociedades, que se pone al servicio de las necesidades de mercado pero también de las que requieren un abordaje distinto, observadas desde una mirada que concierne a lo social, entendido éste como lo que se reproduce o se instaura en el colectivo, en el grupo, en las comunidades, en las sociedades como parte significativa de sus cotidianeidades. El Diseño desde esta perspectiva acompaña al ser humano produciendo una significación de los objetos como parte fundamental de sus vidas, que transforma una realidad deseada en una realidad concreta, de aquí la importancia de crear una conciencia social para la praxis laboral de esta disciplina. En este sentido el campo profesional, académico y de investigación del diseño debe ocuparse de crear, difundir y divulgar el quehacer de la misma, manifestando un equilibrio entre conciencia, racionalidad y la realidad. Desde el contexto planteado, la Universidad Autónoma del Estado de México, a través de su Facultad de Arquitectura y Diseño presenta en esta obra una serie de reflexiones en torno al papel que desempeña el diseño humanístico, científico y tecnológico desde un enfoque de vanguardia e innovación para el desarrollo social, como resultado de la experiencia vertida en el Coloquio Internacional de Diseño que organiza éste año este espacio académico, en donde cada una de las aportaciones refleja la experiencia de cada uno de sus participantes; con base en ello, el presente libro integrado por una compilación de trabajos ofrece descripciones, análisis y propuestas que contribuyen a la solución de problemas procurando un desarrollo social

    Diseño para el consumo cultural, la innovación y la inclusión social

    Get PDF
    Esta obra presenta diversos trabajos de investigación que tienen en común propuestas de diseño desde la cultura, la inclusión y la innovación social, desarrolladas por investigadores nacionales e internacionales adscritos a diversas universidades, así como a programas de posgrado

    Diseño estratégico de vanguardia

    Get PDF
    La integración del diseño con la vanguardia se observa natural, esto es, el diseño es una disciplina abductiva y la vanguardia persigue fines prospectivos, es decir, en ambos casos se trata de objetivos de posibilidad futura. De tal suerte, este libro, emanado de una parte de las ponencias rigurosamente arbitradas del Coloquio Internacional de Diseño 2016, está dividido en tres secciones o capítulos, a saber, el capítulo uno relacionado con la teoría y metodología para proyectos de diseño de vanguardia, el segundo sobre la tecnología, la innovación y la sostenibilidad de vanguardia de dichos proyectos, y finalmente el último capítulo, vinculado con la gestión estratégica de proyectos de vanguardia.La historia se forja de hechos e interpretaciones, de pasados construidos y de presentes en procesos constantes, estudiados en forma estricta por las ciencias. Por su parte, el futuro ostenta la posibilidad de ser indefinidamente planeado con base en las variopintas aproximaciones teóricas y empíricas que dan fundamento a este tipo de ciencia; éstas son denominadas prospectivas y sus bases vanguardias. Resulta importante señalar, que estas posibilidades sólo permiten tener una idea hipotética de lo que será la realidad y el mundo de vida de los seres vivos y su contexto, no obstante, se trata de la única manera racional que tiene el ser humano de prever ese futuro posible. Las distintas ciencias y disciplinas nos permiten construir históricamente estas posibilidades partiendo de datos, hechos, significados y un sinfín de informaciones que le dan cuerpo y sentido a tales posibilidades. En este sentido, la vanguardia, como base del conocimiento prospectivo, observa la necesidad de ser escrita, leída y discutida en los términos más estrictos con el fin de volver las predicciones más precisas. El diseño por su parte, es definido de manera sucinta como la disciplina proyectual estratégica y sistémica de la posibilidad, dirigida a procesos de significación utilitaria y simbólica para la comprensión –o interpretación– y modificación –o proyectación– de niveles de realidad (referentes y sujetos) desde diversos aparatos teóricos y empíricos –perspectivas disciplinarias–

    Evaluation of factors leading to poor outcomes for pediatric acute lymphoblastic leukemia in Mexico: a multi-institutional report of 2,116 patients

    Get PDF
    Background and aimsPediatric acute lymphoblastic leukemia (ALL) survival rates in low- and middle-income countries are lower due to deficiencies in multilevel factors, including access to timely diagnosis, risk-stratified therapy, and comprehensive supportive care. This retrospective study aimed to analyze outcomes for pediatric ALL at 16 centers in Mexico.MethodsPatients &lt;18 years of age with newly diagnosed B- and T-cell ALL treated between January 2011 and December 2019 were included. Clinical and biological characteristics and their association with outcomes were examined.ResultsOverall, 2,116 patients with a median age of 6.3 years were included. B-cell immunophenotype was identified in 1,889 (89.3%) patients. The median white blood cells at diagnosis were 11.2.5 × 103/mm3. CNS-1 status was reported in 1,810 (85.5%), CNS-2 in 67 (3.2%), and CNS-3 in 61 (2.9%). A total of 1,488 patients (70.4%) were classified as high-risk at diagnosis. However, in 52.5% (991/1,889) of patients with B-cell ALL, the reported risk group did not match the calculated risk group allocation based on National Cancer Institute (NCI) criteria. Fluorescence in situ hybridization (FISH) and PCR tests were performed for 407 (19.2%) and 736 (34.8%) patients, respectively. Minimal residual disease (MRD) during induction was performed in 1,158 patients (54.7%). The median follow-up was 3.7 years. During induction, 191 patients died (9.1%), and 45 patients (2.1%) experienced induction failure. A total of 365 deaths (17.3%) occurred, including 174 deaths after remission. Six percent (176) of patients abandoned treatment. The 5-year event-free survival (EFS) was 58.9% ± 1.7% for B-cell ALL and 47.4% ± 5.9% for T-cell ALL, while the 5-year overall survival (OS) was 67.5% ± 1.6% for B-cell ALL and 54.3% ± 0.6% for T-cell ALL. The 5-year cumulative incidence of central nervous system (CNS) relapse was 5.5% ± 0.6%. For the whole cohort, significantly higher outcomes were seen for patients aged 1–10 years, with DNA index &gt;0.9, with hyperdiploid ALL, and without substantial treatment modifications. In multivariable analyses, age and Day 15 MRD continued to have a significant effect on EFS.ConclusionOutcomes in this multi-institutional cohort describe poor outcomes, influenced by incomplete and inconsistent risk stratification, early toxic death, high on-treatment mortality, and high CNS relapse rate. Adopting comprehensive risk-stratification strategies, evidence-informed de-intensification for favorable-risk patients and optimized supportive care could improve outcomes

    Gestión del conocimiento: perspectiva multidisciplinaria. Volumen 12

    Get PDF
    El libro “Gestión del Conocimiento. Perspectiva Multidisciplinaria”, Volumen 12, de la Colección Unión Global, es resultado de investigaciones. Los capítulos del libro, son resultados de investigaciones desarrolladas por sus autores. El libro cuenta con el apoyo de los grupos de investigación: Universidad Sur del Lago “Jesús María Semprúm” (UNESUR), Zulia – Venezuela; Universidad Politécnica Territorial de Falcón Alonso Gamero (UPTAG), Falcón – Venezuela; Universidad Politécnica Territorial de Mérida Kleber Ramírez (UPTM), Mérida – Venezuela; Universidad Guanajuato (UG) - Campus Celaya - Salvatierra - Cuerpo Académico de Biodesarrollo y Bioeconomía en las Organizaciones y Políticas Públicas (C.A.B.B.O.P.P), Guanajuato – México; Centro de Altos Estudios de Venezuela (CEALEVE), Zulia – Venezuela, Centro Integral de Formación Educativa Especializada del Sur (CIFE - SUR) - Zulia - Venezuela, Centro de Investigaciones Internacionales SAS (CIN), Antioquia - Colombia.y diferentes grupos de investigación del ámbito nacional e internacional que hoy se unen para estrechar vínculos investigativos, para que sus aportes científicos formen parte de los libros que se publiquen en formatos digital e impreso

    Perinatal factors and type 1 diabetes-associated dysbiosis in Mexican infants

    Get PDF
    Background: Type 1 diabetes (T1D) is currently an autoimmune disease occurring more frequently and early in life. T1D development requires genetic predisposition and environmental factors, which influence the gut microbiota in early infancy and could increase the risk for T1D-associated autoimmunity. In Mexico there are no published microbiota studies in children <6 years old with T1D. Case reports: We report two contrasting Mexican T1D cases of children <6 years of age and a third case of a healthy child prior to autoimmunity and T1D onset. Perinatal factors, feeding regimes in the first year of life and gut microbiota composition are discussed and related to the T1D onset. The three cases show a particular microbiota profile with decreased bacterial diversity as compared with healthy children, which could be related to environmental factors prior to the development of T1D and disease control. Conclusions: T1D infant cases presented a decreased bacterial diversity, which appeared before autoimmunity and T1D onset. Glycemic control could tend to correct the gut dysbiosis in T1D children. Prospective studies are needed to follow-up healthy children at high genetic risk to assess factors related to the microbiota structure
    corecore