Dietary patterns of Sonoran breastfeeding women are associated to exclusive or partial breastfeeding regimes.

BACKGROUND: During breastfeeding, the maternal diet ensures mothers and infants health. Therefore, it is necessary to update information about the diet of exclusively or partially breastfeeding women in each population. We evaluated the diet of Sonoran breastfeeding women, identified their dietary patterns, and examined their association with the breastfeeding regime. METHODS: In this cross-sectional study, 62 women breastfeeding exclusively (n = 43) or partially (n = 19) participated. The diet was assessed using a food frequency questionnaire, and patterns were identified through principal component analysis. RESULTS: Overall, fats and sodium intake were higher, while potassium intake was lower than recommended. Two dietary patterns were identified: "regional" (n = 36) and "prudent" (n = 26). Women following the "prudent" pattern consumed more protein, calcium, and potassium than those following the "regional" pattern (p < 0.05). The probability of exclusively breastfeeding women having a "prudent" dietary pattern was higher than that of partially breastfeeding women (adjusted odds ratios = 7.29, p = 0.019). CONCLUSIONS: Exclusive breastfeeding possibly motivated mothers to follow a more prudent diet than those who partially breastfed. Therefore, it is crucial to promote a healthy diet among breastfeeding mothers.

INTRODUCCIÓN: Durante el amamantamiento, la dieta garantiza la salud materno-infantil. Por esto, es necesario contar con información actualizada sobre la dieta de quienes amamantan exclusiva o parcialmente en cada población. El objetivo de este trabajo fue evaluar la dieta de mujeres sonorenses amamantando, identificar sus patrones dietarios y buscar su asociación con el régimen de lactancia. MÉTODOS: En este estudio transversal participaron 62 mujeres amamantando de forma exclusiva (n = 43) o parcialmente (n = 19). Se evaluó la dieta con un cuestionario de frecuencia de consumo de alimentos y los patrones se identificaron a través del análisis de componentes principales. RESULTADOS: En general, la ingestión de grasas y sodio fue superior y la de potasio inferior a las cantidades recomendadas. Se identificaron dos patrones dietarios: "regional" (n = 36) y "prudente" (n = 26). Las mujeres con patrón "prudente" ingirieron más proteína, calcio y potasio que las del patrón "regional" (p < 0.05). La probabilidad de que las mujeres que amamantaban en exclusiva siguieran un patrón dietario "prudente" fue mayor que la de aquellas que amamantaban parcialmente (razón de momios ajustada (AOR) = 7.29, p = 0.019). CONCLUSIONES: La lactancia exclusiva posiblemente motivó a las madres a seguir una dieta más prudente que la de aquellas que amamantaban parcialmente. Es necesario promover una dieta saludable entre las madres amamantando.

Dietary patterns of Sonoran breastfeeding women are associated to exclusive or partial breastfeeding regimes / Los patrones dietarios de mujeres sonorenses amamantando se asocian con los regímenes de lactancia exclusiva o parcial

Abstract Background: During breastfeeding, the maternal diet ensures mothers and infants health. Therefore, it is necessary to update information about the diet of exclusively or partially breastfeeding women in each population. We evaluated the diet of Sonoran breastfeeding women, identified their dietary patterns, and examined their association with the breastfeeding regime. Methods: In this cross-sectional study, 62 women breastfeeding exclusively (n = 43) or partially (n = 19) participated. The diet was assessed using a food frequency questionnaire, and patterns were identified through principal component analysis. Results: Overall, fats and sodium intake were higher, while potassium intake was lower than recommended. Two dietary patterns were identified: "regional" (n = 36) and "prudent" (n = 26). Women following the "prudent" pattern consumed more protein, calcium, and potassium than those following the "regional" pattern (p < 0.05). The probability of exclusively breastfeeding women having a "prudent" dietary pattern was higher than that of partially breastfeeding women (adjusted odds ratios = 7.29, p = 0.019). Conclusions: Exclusive breastfeeding possibly motivated mothers to follow a more prudent diet than those who partially breastfed. Therefore, it is crucial to promote a healthy diet among breastfeeding mothers.

Resumen Introducción: Durante el amamantamiento, la dieta garantiza la salud materno-infantil. Por esto, es necesario contar con información actualizada sobre la dieta de quienes amamantan exclusiva o parcialmente en cada población. El objetivo de este trabajo fue evaluar la dieta de mujeres sonorenses amamantando, identificar sus patrones dietarios y buscar su asociación con el régimen de lactancia. Métodos: En este estudio transversal participaron 62 mujeres amamantando de forma exclusiva (n = 43) o parcialmente (n = 19). Se evaluó la dieta con un cuestionario de frecuencia de consumo de alimentos y los patrones se identificaron a través del análisis de componentes principales. Resultados: En general, la ingestión de grasas y sodio fue superior y la de potasio inferior a las cantidades recomendadas. Se identificaron dos patrones dietarios: "regional" (n = 36) y "prudente" (n = 26). Las mujeres con patrón "prudente" ingirieron más proteína, calcio y potasio que las del patrón "regional" (p < 0.05). La probabilidad de que las mujeres que amamantaban en exclusiva siguieran un patrón dietario "prudente" fue mayor que la de aquellas que amamantaban parcialmente (razón de momios ajustada (AOR) = 7.29, p = 0.019). Conclusiones: La lactancia exclusiva posiblemente motivó a las madres a seguir una dieta más prudente que la de aquellas que amamantaban parcialmente. Es necesario promover una dieta saludable entre las madres amamantando.

DHEA Induces Sex-Associated Differential Patterns in Cytokine and Antibody Levels in Mice Infected with Plasmodium berghei ANKA.

Malaria is the most lethal parasitic disease worldwide; the severity of symptoms and mortality are higher in men than in women, exhibiting an evident sexual dimorphism in the immune response; therefore, the contribution of 17ß-estradiol and testosterone to this phenomenon has been studied. Both hormones differentially affect several aspects of innate and adaptive immunity. Dehydroepiandrosterone (DHEA) is the precursor of both hormones and is the sexual steroid in higher concentrations in humans, with immunomodulatory properties in different parasitic diseases; however, the involvement of DHEA in this sexual dimorphism has not been studied. In the case of malaria, the only information is that higher levels of DHEA are associated with reduced Plasmodium falciparum parasitemia. Therefore, this work aims to analyze the DHEA contribution to the sexual dimorphism of the immune response in malaria. We assessed the effect of modifying the concentration of DHEA on parasitemia, the number of immune cells in the spleen, cytokines, and antibody levels in plasma of CBA/Ca mice infected with Plasmodium berghei ANKA (P. berghei ANKA). DHEA differentially affected the immune response in males and females: it decreased IFN-γ, IL-2 and IL-4 concentrations only in females, whereas in gonadectomized males, it increased IgG2a and IgG3 antibodies. The results presented here show that DHEA modulates the immune response against Plasmodium differently in each sex, which helps to explain the sexual dimorphism present in malaria.

HLA-Haplotypes Influence Microbiota Structure in Northwestern Mexican Schoolchildren Predisposed for Celiac Disease or Type 1 Diabetes.

To contribute to and elucidate the participation of microbiota in celiac disease (CD) and type 1 diabetes (T1D) development, we evaluated the influence of HLA haplotypes, familial risk, and diet on the microbiota of schoolchildren. We conducted a cross-sectional study on 821 apparently healthy schoolchildren, genotyping HLA DQ2/DQ8, and registering familial risk. We analyzed the fecal microbiota using 16S rRNA gene sequencing, and autoantibodies for CD or T1D by ELISA. After analyses, we created three groups: at-high-risk children (Group 1), at-high-risk children plus autoantibodies (Group 2), and nonrisk children (Group 3). HLA influenced the microbiota of Groups 1 and 2, decreasing phylogenetic diversity in comparison to Group 3. The relative abundance of Oscillospiraceae UCG_002, Parabacteroides, Akkermansia, and Alistipes was higher in Group 3 compared to Groups 1 and 2. Moreover, Oscillospiraceae UCG_002 and Parabacteroides were protectors of the autoantibodies' positivity (RRR = 0.441 and RRR = 0.034, respectively). Conversely, Agathobacter was higher in Group 2, and Lachnospiraceae was in both Groups 1 and 2. Lachnospiraceae correlated positively with the sucrose degradation pathway, while the principal genera in Group 3 were associated with amino acid biosynthesis pathways. In summary, HLA and familial risk influence microbiota composition and functionality in children predisposed to CD or T1D, increasing their autoimmunity risk.

Testosterone induces sexual dimorphism during infection with Plasmodium berghei ANKA.

Malaria is the most lethal parasitic disease worldwide; men exhibit higher mortality and more severe symptomatology than women; however, in most studies of immune response in malaria, sex is not considered a variable. Sex hormones 17ß-oestradiol and testosterone are responsible for the main physiological differences between sexes. When interacting with their receptors on different immune cells, they modify the expression of genes that modulate cell proliferation, differentiation, and synthesis of cytokines. The immunosuppressive activity of testosterone is well accepted; however, its participation in the sexual dimorphism of the immune response to malaria has not been studied. In this work, we analysed whether altering the concentration of testosterone, through increasing the concentration of this hormone for exogenous administration for three weeks, or gonadectomy before infection with Plasmodium berghei ANKA affects different cells of the immune response necessary for parasite clearance. We also assessed the concentration of pro-and anti-inflammatory cytokines in male and female CBA/Ca mice infected or not with the parasite. Our results show that testosterone changes affect females more than males, resulting in sex-associated patterns. Testosterone administration increased parasitaemia in intact males while reducing it in intact females leading to a dimorphic pattern. In addition, gonadectomy increased parasitaemia in both sexes. Moreover, testosterone administration prevented both weight loss caused by the infection in females and hypothermia in gonadectomized mice of both sexes. Boosting testosterone concentration increased CD3+ and CD8+ populations but decreased the B220+ cells exclusively in females. Additionally, testosterone reduced IFN-γ concentration and increased IL-6 levels only in females, while in males, testosterone increased the number of NK cells. Finally, gonadectomy decreased TNF-α concentration in both sexes. Our results demonstrate that testosterone induces different patterns depending on sex and testosterone concentration. The results of this work contribute to understanding the impact of modifying testosterone concentration on the immune response specific against Plasmodium and the participation of this hormone in sexual dimorphism in malaria.

Tamoxifen Suppresses the Immune Response to Plasmodium berghei ANKA and Exacerbates Symptomatology.

Malaria is the most lethal parasitic disease in the world. Mortality and severity in symptoms are higher in men than women, suggesting that oestrogens, which are in higher concentration in females than in males, may regulate the immune response against malaria. Tamoxifen, a selective oestrogen receptor modulator used in breast cancer treatment due to its antagonistic effect on oestrogen receptors α and ß, is also studied because of its potential therapeutic use for several parasitic diseases. However, most studies, including one in malaria, have not addressed the immunomodulatory role of tamoxifen. In this work, we evaluated the effect of tamoxifen on the immune response of CBA/Ca mice against Plasmodium berghei ANKA. This study showed for the first time that tamoxifen increased parasite load, aggravated symptoms by decreasing body temperature and body weight, and worsened anaemia. Additionally, tamoxifen significantly increased the splenic index and the percentages of CD4+ and NK+ cells on day eight post-infection. By contrast, tamoxifen decreased both CD8+ and B220+ populations in the spleen and decreased the serum levels of IL-2, IL-6, and IL-17. Our findings support the notion that tamoxifen is a potent immunomodulator in malaria-infected mice and suggest caution when administering it to malaria-infected women with breast cancer.

Planificación del flujo de caja de proyectos de construcción basada en BIM y dinámica de sistemas / Cash flow planning of construction projects based on BIM and system dynamics / Planeamento do fluxo de caixa de projectos de construção baseados em BIM e System Dynamics

RESUMEN La planificación del flujo de caja de un proyecto de construcción es una actividad decisiva para garantizar los recursos financieros que son necesarios para el desarrollo de las actividades de obra. Debido a la importancia, en la industria de la construcción se observa la necesidad de metodologías de análisis de flujo caja de adaptación fácil a las modificaciones, y con altos niveles de detalle, las cuales propicien mejoras en la precisión de las estimaciones y en la anticipación de situaciones problemáticas. Considerando esta necesidad, en este artículo se propone un nuevo esquema metodológico para la planificación del flujo de caja de proyectos de construcción, el cual está basado en la integración de modelos del proceso constructivo BIM 5D (Building Information Modeling 5D), y dinámica de sistemas. El esquema que es propuesto consta de seis etapas principales: 1) modelo BIM 3D, cantidades y rendimientos, 2) estructura desglosada del trabajo, 3) estimación de costos, 4) modelado y simulación digital BIM 5D, 5) análisis del flujo de caja, y 6) implementación de la alternativa. La aplicación del esquema indica que la rapidez, visualización y automatización, con la que se desarrolla la planificación del flujo de caja, propicia el análisis de varias alternativas; lo cual fortalece los procesos de toma de decisiones, y mejora los resultados de la planificación.

ABSTRACT Cash flow planning of a construction project is a crucial activity to guarantee the financial resources necessary for construction activities development. Due to the importance, there is a need for cash flow analysis methodologies that are easy to adapt to modifications and involve high levels of detail, which allow improving precision in estimations and anticipating possible problematic events. Considering this need, this paper proposes a new methodological scheme for cash flow planning of construction projects, which is based on construction process models BIM 5D (Building Information Modeling 5D), and system dynamics. The proposed scheme consists of six main stages: 1) BIM 3D model and quantities, 2) work breakdown structure, 3) cost estimation, 4) BIM 5D digital modeling and simulation, 5) cash flow analysis, and 6) implementation. The application of the proposed scheme indicates that the speed, visualization, and automation, with which the cash flow planning is developed, favors the analysis of several alternatives, which strengthens decision-making processes, and improves planning results.

RESUMO O planeamento do fluxo de caixa de um projecto de construção é uma actividade decisiva para garantir os recursos financeiros necessários para o desenvolvimento das actividades de trabalho. Devido à sua importância, na indústria da construção há necessidade de metodologias de análise de fluxo de caixa que sejam facilmente adaptáveis às mudanças e com elevados níveis de detalhe, que permitam melhorar a precisão das estimativas e a antecipação de situações problemáticas. Considerando esta necessidade, este documento propõe um novo esquema metodológico para o planeamento do fluxo de caixa dos projectos de construção, que se baseia na integração do BIM 5D (Building Information Modeling 5D) e modelos de dinâmica do sistema do processo de construção. O esquema proposto consiste em seis fases principais: 1) modelo BIM 3D, quantidades e desempenhos, 2) estrutura de repartição do trabalho, 3) estimativa de custos, 4) modelação e simulação digital BIM 5D, 5) análise do fluxo de caixa, e 6) implementação da alternativa. A aplicação do esquema indica que a rapidez, visualização e automatização, com a qual o planeamento do fluxo de caixa é desenvolvido, é conducente à análise de várias alternativas; o que reforça os processos de tomada de decisão, e melhora os resultados do planeamento.

Reassessment of Varronia bellonis - a threatened, endemic plant from Puerto Rico.

BACKGROUND: Varronia bellonis (Urb.) Britton is a lianescent or recumbent shrub that is endemic to Puerto Rico where it is restricted to specific geology types with a limited extent on the western half of the Island. The species occurs on serpentinite geology covered by serpentine-derived soils in the west-central mountains and on limestone geology in the the northern karst region. The species area of occupancy is estimated to range between 108 km2 and 268 km2 and its extent of occurrence to be between 644 km2 and 852 km2. The number of locations are estimated to be four. There are 418 known mature individuals in the wild (Hamilton 2020a). The species was previously assessed as Critically Endangered (Linsky and Sustache 2014), based on available information. However, an international team have been collaborating to conserve the species and, based on new information derived from this work, the species is reassessed as Endangered (EN), based on Criteria B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v), according to the IUCN Red List Categories and Criteria (version 3.1) and guidelines (IUCN Standards and Petitions Committee 2019). NEW INFORMATION: Areas of suitable habitat across the native range of the threatened plant, V. bellonis, were surveyed by a team of experts between 2016 and 2019 to determine the species habitat preferences, identify threats to the species survival and provide an up-to-date meta-population status. The new information enabled members of the international team to reassess the species status and will enable sound and scientifically-based recovery actions to be recommended that can secure Varronia bellonis populations for the future. Parallel efforts are ongoing to explore the species population genetics and reproductive biology.

Variation across river channels in demographic dynamics of a riparian herb with threatened status: management and conservation implications.

PREMISE: Gesneria pauciflora is a rare, threatened plant in riparian forests. Periodic disturbances, expected in this habitat, could influence demographic dynamics on plant populations, yet their impact may not be the same across the watershed. We hypothesized that differences in disturbances between the main channel and tributaries may lead to spatial dissimilarities in population growth rate (λ), structure, and fecundity. METHODS: In the Maricao River Watershed in Puerto Rico, 1277 plants were tagged and monitored for 1.5 years. Every 6 months, we measured plant size and recorded survival, fecundity, and appearance of seedlings. These variables were used in integral projection models to assess the population status of G. pauciflora. RESULTS: Plants in the main channel were smaller but more likely to flower and fruit than those in the tributaries. Overall mortality was greater in the main channel and greater during the rainy season. At both sites, λ ranged from 0.9114 to 0.9865, and survival/growth of larger plants had a greater effect on λ (>0.90) regardless of site. CONCLUSIONS: Values for population growth rates suggest that G. pauciflora is declining across the watershed. Higher mortality rates in the main channel (more-perturbed sites) might drive G. pauciflora to reproduce at smaller sizes, while tributaries (less-perturbed sites) might be better for growth and lead to larger plant sizes. Extreme climatic events are expected to increase in the Caribbean and might decrease the population if the population is left unmanaged. Management strategies that reduce the time plants require to reach larger sizes might be necessary to increase λ, and reintroduction using cuttings might be a possible solution.

A Cross-Sectional Survey of the Zika Virus and its Prevention: The Knowledge, Thoughts, and Beliefs of a Community of Residents in Caguas, Puerto Rico.

OBJECTIVE: The objective of this study was to explore the knowledge, thoughts, and beliefs regarding the Zika virus and its prevention in a community of residents in the municipality of Caguas, Puerto Rico, and elicit their concerns and perceptions of risk. METHODS: A quantitative, non experimental, descriptive, cross-sectional correlational study was conducted in a community in Caguas, Puerto Rico. A structured questionnaire was administered to a sample of 158 residents, aged 21 and older, who participated voluntarily. The data were analyzed using SPSS version 17 via univariate and bivariate analysis. RESULTS: Of 158 surveyed, 64.6% were women; with a population average of 53.85 years. Of the respondents who believed that they would be affected in some way if they were infected by the Zika virus, over half (52.3%) felt that the virus represented a significant threat to their emotional stability. Of those who perceived emotional threat, 39.5% (n=32) continued to study after completing high school (X2=9.217, p=0.027), 57.9% (n=55) had private health insurance (X2=6.325; p=0.042), and 67.9% (n=55) reported it was little or unlikely to become infected (X2= 6.783; p=0.034). Out of those concerned, 57.4% (n=54) considered Zika very or extremely severe (X2=22.827, p<0.001) and 98.9% (n=93) clean the house surroundings as a preventive measure (X2 = 4.951, p=0.026). Lack of interest was the most common reason identified for not complying with preventive actions by the residents (89.2%). CONCLUSION: The underestimation both of the risk concerning the Zika virus and of its consequences was evident. This study reaffirms the need to develop a network that effectively and constantly communicates risk estimates, doing so while addressing the specific needs within the communities served by that network. Community interventions aimed at improving the benefits of and reducing the risks associated with and the perceived barriers to preventive behaviors are needed.

Planificación de recursos humanos a partir de la simulación del proceso constructivo en modelos BIM 5D / Planning of human resources from the simulation of the construction process in BIM 5D models / Planejamento de recursos humanos a partir da simulação do processo construtivo em modelos BIM 5D

RESUMEN La planificación de recursos humanos de un proyecto de construcción es una actividad de gran importancia para el desarrollo exitoso de este tipo de actividades. Resulta una labor zcompleja que requiere de herramientas y metodologías automatizadas que permiten la optimización de variables relacionadas con tiempo y costos. Building Information Modeling (BIM) es una base de datos digital que proporciona una réplica virtual del proceso constructivo a partir de cinco variables: i) el tiempo; ii) el costo; y tres dimensiones: x, y z; el modelo se conoce como BIM 5D. En este artículo se propone una metodología para la planificación de recursos humanos que tome como referencia la simulación del proceso constructivo BIM 5D. Se expone un conjunto de técnicas para la planificación del recurso humano en proyectos de construcción y se realiza la planificación de un caso de estudio a partir del enfoque BIM 5D. Con base en los resultados se formaliza un método para el diseño de la planificación del recurso humano. Comparado con otras metodologías, la propuesta presenta ventajas como la automatización del proceso y la posibilidad para la evaluación de distintas alternativas en tiempos reducidos.

ABSTRACT The human resources planning of a construction project is an activity of great importance for the successful development of construction activities. It is a complex task that requires automated tools and methodologies that allow the optimization of variables related to time and costs. Building Information Modeling (BIM) is a digital database that allows to obtain a virtual replication constructive process from five variables: i) time; ii) costs; and three dimensions x, y, z; model that is known as BIM 5D. In this paper it proposes a methodology for the planning of human resources based on the simulation of the BIM 5D construction processes. A set of techniques for the planning of the human resource in construction projects is presented and planning of a case study is carried out from the BIM 5D approach. Taking in account the results, it formalized a method for human resource planning. Compared to other methodologies, it presents advantages such as automation and the possibility of evaluating different alternatives in reduced times.

RESUMO O planejamento de recursos humanos de um projeto de construção é uma atividade de grande importância para o desenvolvimento bem-su-cedido deste tipo de atividades. É uma tarefa complexa que requer ferramentas e metodologias automatizadas que permitem a otimização de variáveis relacionadas com tempo e custos. Building Information Modeling (BIM), em português, Modelagem da Informação da Construção, é um banco de dados digital que fornece uma réplica virtual do processo de construção com base em cinco variáveis: i) tempo; ii) o custo; e três dimensões: x, y, z; o modelo é conhecido como BIM 5D. Este artigo propõe uma metodologia para o planejamento de recursos humanos que toma como referência a simulação do processo de construção do BIM 5D. Expõe-se um conjunto de técnicas para o planejamento de recursos humanos em projetos de construção e realiza-se o planejamento de um estudo de caso com base na abordagem BIM 5D. baseado nos resultados, formaliza-se um método para o planejamento de recursos humanos. Em comparação com outras metodologias, a proposta apresenta vantagens como automatização do processo e a possibilidade de avaliação de diferentes alternativas em tempos reduzidos.