Unexpected discovery: "A new 3,3'-bipyrazolo[3,4-b]pyridine scaffold and its comprehensive analysis".

In this study, a novel 3,3'-bipyrazolo [3,4-b]pyridine-type structure was synthesized from 5-acetylamino-3-methyl-1-phenylpyrazole using the Vilsmeier-Haack reaction as a key step. The spectroscopic properties and structural elucidation of the compound were determined with the use of FT-IR, HRMS, 1H NMR, and 13C NMR. Likewise, the theoretical analysis of the IR and NMR spectra allowed peaks to be assigned and a solid correlation was demonstrated between the experimental and theoretical results. Finally, ab initio calculations based on the density functional theory method at the B3LYP/6-311G (d,p) level of theory were used to determine the conformational energy barrier, facilitating the identification of the most probable conformers of the synthesized compound. Overall, our findings contribute to the understanding of bipyrazolo [3,4-b]pyridine derivatives.

Adding mechanobiological cell features to finite element analysis of an immediately loaded dental implant.

Finite element analysis (FEA) has been used to analyze the behavior of dental materials, mainly in implantology. However, FEA is a mechanical analysis and few studies have tried to simulate the biological characteristics of the healing process of loaded implants. This study used the rule of mixtures to simulate the biological healing process of immediate implants in an alveolus socket and bone-implant junction interface through FEA. Three-dimensional geometric models of the structures were obtained, and material properties were derived from the literature. The rule of mixtures was used to simulate the healing periods-immediate and early loading, in which the concentration of each cell type, based on in vivo studies, influenced the final elastic moduli. A 100 N occlusal load was simulated in axial and oblique directions. The models were evaluated for maximum and minimum principal strains, and the bone overload was assessed through Frost's mechanostat. There was a higher strain concentration in the healing regions and cortical bone tissue near the cervical portion. The bone overload was higher in the immediate load condition. The method used in this study may help to simulate the biological healing process and could be useful to relate FEA results to clinical practice.

Retention of an Endosymbiont for the Production of a Single Molecule.

Sap-feeding insects often maintain two or more nutritional endosymbionts that act in concert to produce compounds essential for insect survival. Many mealybugs have endosymbionts in a nested configuration: one or two bacterial species reside within the cytoplasm of another bacterium, and together, these bacteria have genomes that encode interdependent sets of genes needed to produce key nutritional molecules. Here, we show that the mealybug Pseudococcus viburni has three endosymbionts, one of which contributes only two unique genes that produce the host nutrition-related molecule chorismate. All three bacterial endosymbionts have tiny genomes, suggesting that they have been coevolving inside their insect host for millions of years.

Synthesis of pyrimido[4,5-b]quinolindiones and formylation: ultrasonically assisted reactions.

Ultrasound-assisted synthesis of pyrimido|quinolindione derivatives via a multicomponent reaction and subsequent formylation with Vilsmeier-Haack reagent were performed. Compounds were prepared by a one-pot method from aminopyrimidinones, dimedone and aromatic aldehydes through a Mannich-type reaction sequence, and then functionalized under ultrasound irradiation and Vilsmeier-Haack conditions to give ß-chlorovinylaldehyde products. Ultrasonically assisted reactions, experimental simplicity, good yields without using metallic catalysts and the control of hazardous material release are features of this simple procedure.

Multiplet-Assisted Peak Alignment for 1H NMR-Based Metabolomics.

NMR-based metabolomics aims at recovering biological information by comparing spectral data from samples of biological interest and appropriate controls. Any statistical analysis performed on the data matrix relies on the proper peak alignment to produce meaningful results. Through the last decades, several peak alignment algorithms have been proposed, as well as alternatives like spectral binning or strategies for annotation and quantification, the latter depending on reference databases. Most of the alignment algorithms, mainly based on segmentation of the spectra, present limitations for regions with peak overlap or cases of frequency order exchange. Here, we present our multiplet-assisted peak alignment algorithm, a new methodology that consists of aligning peaks by matching multiplet profiles of f1 traces from J-resolved spectra. A correspondence matrix with the linked f1 traces is built, and multivariate data analysis can be performed on it to obtain useful information from the data, overcoming the issues of peak overlap and frequency crossovers. Statistical total correlation spectroscopy can be applied on the matrix as well, toward a better identification of molecules of interest. The results can be queried on one-dimensional (1D) 1H databases or can be directly coupled to our previously published Chemical Shift Multiplet Database.

Incorporation of 5 methylcytidine alleviates innate immune response to self-amplifying RNA vaccine.

In order to improve vaccine effectiveness and safety profile of existing synthetic RNA-based vaccines, we have developed a self-amplifying RNA (saRNA)-based vaccine expressing membrane-anchored receptor binding domain (RBD) of SARS-CoV-2 S protein (S-RBD) and have demonstrated that a minimal dose of this saRNA vaccine elicits robust immune responses. Results from a recent clinical trial with 5-methylcytidine (5mC) incorporating saRNA vaccine demonstrated reduced vaccine-induced adverse effects while maintaining robust humoral responses. In this study, we investigate the mechanisms accounting for induction of efficient innate and adaptive immune responses and attenuated adverse effects induced by the 5mC-incorporated saRNA. We show that the 5mC-incorporating saRNA platform leads to prolonged and robust expression of antigen, while induction of type-I interferon (IFN-I), a key driver of reactogenicity, is attenuated in peripheral blood mononuclear cells (PBMCs), but not in macrophages and dendritic cells. Interestingly, we find that the major cellular source of IFN-I production in PBMCs is plasmacytoid dendritic cells (pDCs), which is attenuated upon 5mC incorporation in saRNA. In addition, we demonstrate that monocytes also play an important role in amplifying proinflammatory responses. Furthermore, we show that the detection of saRNA is mediated by a host cytosolic RNA sensor, RIG-I. Importantly, 5mC-incorporating saRNA vaccine candidate produced robust IgG responses against S-RBD upon injection in mice, thus providing strong support for the potential clinical use of 5mC-incorporating saRNA vaccines.

Effect of environmental variables on mercury accumulation in sediments of an anthropogenically impacted tropical estuary (Buenaventura Bay, Colombian Pacific).

Estuaries are the main entry areas of mercury to the marine environment and are important to understand the effect of this contaminant on marine organisms, since it accumulates in the sediments becoming available to enter the food trophic chain. This study aims to determine the environmental variables that mainly influence the spatiotemporal dynamics of total mercury accumulation in sediments of tropical estuaries. Sediment samples were collected from interior and exterior areas of the estuary during the dry and rainy seasons, representing the spatiotemporal gradients of the estuary. The grain size, organic matter content (OM), and total mercury concentration (THg) of the sediment samples were determined. In addition, salinity, temperature, dissolved oxygen, and pH of the water column associated with each sediment sample were assessed. The variations in environmental conditions, OM and THg in sediment were in accordance with a gradient which goes from conditions influenced by fresh water in the inner estuary to conditions influenced by sea water in the outer part of the estuary. The OM and THg in sediments presented similar variation patterns; they were higher in the rainy season than in the dry season and in the interior area of the estuary than in the exterior area. Despite the complex dynamic observed in the distribution and accumulation processes of mercury in sediments, these processes could be modeled from OM and salinity parameters. Due to the correlations found, in the process of accumulation of mercury in sediments the OM could represents the pathway of transport and accumulation of THg, and salinity could represent the influence of the hydroclimatic variations and environmental gradients of the estuary.

Evaluating the Energy Requirements of Assistive Technologies for Older Adults.

The successful adoption of assistive technologies for older adults requires considering and evaluating many different factors and dimensions such as effectiveness, usability, cost and equity of access, to name some of the most relevant. In line with this, the energy requirements to power such assistive technologies remains a hidden factor that might to some extent influence the success in their adoption and the user experience in a wider sense. Very often energy availability is taken for granted and its associated costs and operational requirements are mostly neglected. In this paper, the energy-related requirements of assistive technologies are analysed from a general perspective. This analysis is subsequently particularised for a use case within the SHAPES project, in the context of active and healthy ageing. This use case includes a wide variety of assistive technologies, namely: wearable devices, home sensors and a smart mirror, which provides connectivity and a set of software services. The energy requirements of all these technologies are evaluated and analysed to investigate their impact and relevance on the overall cost and user experience, following the proposed protocol.

Diferencias de sexo asociadas al suicidio y años potenciales de vida perdidos: un estudio retrospectivo

Objetivo: Identificar las diferencias de sexo asociadas a los años potenciales de vida perdidos por suicidio en el departamento de Nariño, periodo 2005-2019. Metodología: Estudio de tipo descriptivo observacional y retrospectivo, en el que se analizaron 1686 certificados de defunción por suicidio de hombres y mujeres en el departamento de Nariño, identificados en el Departamento Nacional Administrativo de Estadística. Resultados: En el periodo 2005-2019, se observaron 1212 suicidios en hombres y 474 en mujeres. Estas se suicidaron a edades más bajas que aquellos. El 50,5 % de los hombres habían cursado básica primaria, y el 46,0 % de las mujeres, básica secundaria. El mayor número de casos de suicidios en hombres y mujeres se presentaron en el área urbana (51,2 % y 45,1 % respectivamente). El envenenamiento fue el mecanismo de suicidio más utilizado por las mujeres (66,7 %), y para los hombres, el mayor porcentaje (41,7) correspondió al ahorcamiento. La tendencia anual de muertes por suicidio fue mayor en hombres que en mujeres. En aquellos, la tasa de suicidio se situó por encima de 4,5 suicidios por 100 000 habitantes, mientras que, en ellas, se mantuvo por debajo de 3,0. Conclusiones: Hubo un aumento en la tendencia de muertes en el periodo de tiempo analizado y el riesgo de morir por suicidio en el hombre fue 3,9 veces el riesgo de morir en una mujer. El estudio contempla importantes aspectos para ser abordados en la prevención del suicidio.

Objective: To identify the sex differences associated with the potential years of life lost due to suicide in the department of Nariño, from 2005 to 2019. Methodology: Descriptive, observational and retrospective study, in which 1686 death certificates by suicide of men and women in the department of Nariño, identified in the National Administrative Department of Statistics, were analyzed. Results: From 2005 to 2019, 1,212 suicide cases of men were observed and 474 of women. Women committed suicide at younger ages than men. 50.5% of the men had completed primary school, and 46.0% of the women, secondary school. The highest number of suicide cases of men and women occurred in the urban area (51.2% and 45.1% respectively). Poisoning was the suicide mechanism most used by women (66.7%), and for men, the highest percentage (41.7) corresponded to hanging. The annual trend of deaths by suicide was higher in men than in women. For men, the suicide rate was above 4.5 suicides per 100,000 inhabitants, while for women, it remained below 3.0. Conclusions: There was an increase in the trend of deaths in the period analyzed and the risk of dying by suicide in men was 3.9 times the risk of dying by suicide in women. The study contemplates important aspects to be addressed in suicide prevention.

Objetivo: Identificar as diferenças de sexo associadas aos anos potenciais de vida perdidos por suicídio no departamento de Nariño, no período 2005-2019. Metodologia: Estudo de tipo descritivo observacional e retrospectivo, em que foram analisados 1686 certificados de óbito por suicídio de homens e mulheres no departamento de Nariño, identificados no Departamento Nacional Administrativo de Estatística. Resultados: No período de 2005-2019, observaram-se 1212 suicídios em homens e 474 em mulheres. Elas suicidaram-se em idades menores do que eles. O 50,5% dos homens cursaram o ensino fundamental, e o 46% das mulheres o ensino médio. O maior número de casos de suicídios em homens e mulheres apresentou-se na área urbana (51,2% y 45,1%, respectivamente). O envenenamento foi o mecanismo de suicídio mais utilizado pelas mulheres (66,7%), e para os homens, a maior percentagem (41,7%) correspondeu ao enforcamento. A tendência anual de mortes por suicídio foi maior em homens do que em mulheres. Neles, a taxa de suicídio esteve por cima de 4,5 suicídios por 100.000 habitantes, enquanto nelas se manteve abaixo de 3,0. Conclusões: Houve um aumento na tendência de mortes no período de tempo analisado e o risco de morrer por suicídio no caso dos homens foi 3,9 vezes o risco de morrer de uma mulher. O estudo contempla aspectos importantes a serem abordados na prevenção do suicídio.

Determinantes sociales asociados a la seguridad alimentaria y nutricional en hogares de mujeres con exceso de peso de Girardot, Cundinamarca (Colombia) / Approach from social determinants to food and nutritional security in households of overweight women in Girardot

Fundamentos: los resultados de la Encuesta Nacional de Situación Nutricional (ENSIN) de los últimos 15 años muestran un marcado aumento en el exceso de peso en adultos. En 2015, el 59,6% de las mujeres entre 18 y 64 años presentó exceso de peso. El objetivo fue analizar la situación de seguridad alimentaria y nutricional (SAN) en un grupo de hogares del municipio de Girardot - Cundinamarca, a partir del referencial de los determinantes sociales de la SAN y la equidad social. Métodos: estudio cuantitativo transversal analítico realizado entre 2019 y 2020. Se realizó recolección de variables sociodemográficas, inseguridad alimentaria en el hogar (INSAH), estrategias de afrontamiento de ésta y frecuencia de consumo de alimentos mediante 4 instrumentos tipo encuesta en 20 mujeres adultas con exceso de peso residentes en Girardot (Colombia) de hogares urbanos de los estratos 1 y 2. Resultados: se encontró asociación estadísticamente significativa entre la decisión de uso de los ingresos económicos y la estrategia de afrontamiento número 2, clasificadas como determinantes intermedios y la INSAH. Conclusiones: se identificaron la composición del hogar, el nivel educativo del jefe de hogar, la decisión de uso del dinero del hogar, entre otros, como determinantes sociales que agudizan las inequidades en la situación alimentaria y nutricional de los hogares estudiados. (AU)

Background: According to the National Survey of the Nutritional Situation (ENSIN) results, during the last 15 years the obesity in adults has been sharply increasing. In fact, 59,6% of women between 18 and 64 years old were overweight in 2015. The objective was to analyze the Food and Nutrition Security Situation (SAN) within urban households in Girardot - Cundinamarca, based on the social determinants of SAN and social equality Methods: Analytical cross-sectional quantitative study. This paper used a data collection system of background variables, such as food insecurity (INSAH), the coping strategies used by the INSAH and the eating frequency, all this information was collected by interviewing the people using 4 different types of polls. Results: Analytical cross-sectional quantitative study. This paper used a data collection system of background variables, such as food insecurity, the coping strategies used by the INSAH and the eating frequency, all this information was collected by interviewing the people using 4 different types of polls. Conclusions: It was identified the nuclear family composition, the head of the household educational level, the use of money decisions at home among others. As social determinants that contribute to intensifying the inequality in the food and nutritional status in the households of study. (AU)

Heat tolerance of marine ectotherms in a warming Antarctica.

Global warming is affecting the Antarctic continent in complex ways. Because Antarctic organisms are specialized to living in the cold, they are vulnerable to increasing temperatures, although quantitative analyses of this issue are currently lacking. Here we compiled a total of 184 estimates of heat tolerance belonging to 39 marine species and quantified how survival is affected concomitantly by the intensity and duration of thermal stress. Species exhibit thermal limits displaced toward colder temperatures, with contrasting strategies between arthropods and fish that exhibit low tolerance to acute heat challenges, and brachiopods, echinoderms, and molluscs that tend to be more sensitive to chronic exposure. These differences might be associated with mobility. A dynamic mortality model suggests that Antarctic organisms already encounter temperatures that might be physiologically stressful and indicate that these ecological communities are indeed vulnerable to ongoing rising temperatures.

El calentamiento global está afectando al continente antártico de formas complejas. Dado que los organismos antárticos están especializados a vivir en el frío, son vulnerables al aumento de las temperaturas, aunque en la actualidad hay carencia de análisis cuantitativos al respecto. Aquí recopilamos un total de 184 estimaciones de tolerancia al calor pertenecientes a 39 especies marinas, y cuantificamos cómo la supervivencia de estos organismos se ve afectada concomitantemente por la intensidad y la duración de un estrés térmico. Efectivamente las especies antárticas muestran límites térmicos desplazados hacia temperaturas más frías, con estrategias contrastadas entre los artrópodos y los peces que muestran una baja tolerancia a los desafíos térmicos agudos, y los braquiópodos, equinodermos y moluscos que tienden a ser más sensibles a la exposición crónica. Estas diferencias podrían estar asociadas con la movilidad. Un modelo dinámico de mortalidad sugiere que los organismos antárticos ya se enfrentan a temperaturas que podrían ser fisiológicamente estresantes e indican que estas comunidades ecológicas son realmente vulnerables al aumento continuo de las temperaturas.

Sad and degenerate indigenous: the psychiatric view of Hermilio Valdizán on racial difference in Peru, 1910-1925. / Indígenas tristes y degenerados: la mirada psiquiátrica de Hermilio Valdizán sobre la diferencia racial en Perú, 1910-1925.

Hermilio Valdizán published several papers on what was called psychiatric folklore, understood as the ways of understanding and treating mental illnesses by indigenous people, both from the colonial and pre-Hispanic past and from the author's present. In this article, we analyze Valdizán's texts on the psychiatric and psychological characteristics of indigenous Peruvians. From the perspective of this psychiatrist, contemporary indigenous people were archaeological remains of the ancient Inca empire, ruins in the process of degeneration. In a context marked by indigenism, in which it was sought to integrate the Indians, psychiatry played a conservative and racist role that reproduced evolutionary models of the nineteenth century.

Hermilio Valdizán publicó numerosos trabajos sobre lo que se denominó folklor psiquiátrico, entendido como las formas de comprender y tratar las enfermedades mentales por parte de los indígenas, tanto del pasado colonial y prehispánico como del presente del autor. En este artículo analizamos los textos de Valdizán sobre las características psiquiátricas y psicológicas de los indígenas peruanos. Desde la perspectiva de este psiquiatra, los indígenas contemporáneos eran restos arqueológicos del antiguo imperio inca, ruinas en proceso de degeneración. En un contexto marcado por el indigenismo donde se buscaba integrar al indio, la psiquiatría desempeñó un papel conservador y racista que reprodujo modelos evolucionistas del siglo XIX.

Influence of environmental variables on the spatiotemporal dynamics of water quality in Buenaventura Bay, Colombian Pacific.

Tropical estuaries are productive dynamic ecosystems where water quality is mediated by physicochemical and biological processes and by fluvial and anthropogenic discharges. The objective of the study was to determine the influence of environmental variables on the spatiotemporal dynamics of water quality in Buenaventura Bay, which is a highly impacted estuary. Sampling was carried out during the dry and rainy season, at three depths, in four stations that represent the environmental gradient of the bay. Temperature, total dissolved solids, salinity, dissolved oxygen, and pH were determined for each sample. In addition, alkalinity, phosphates, nitrites, and nitrates as indicators of water quality were also measured. The estuary was classified as meso- and polyhaline, with appropriate oxygen and pH conditions and spatiotemporal gradients of temperature and solids mediated by river discharges. Significant variations were found in the physicochemical variables by season, with maximum salinity, pH, and solids in the dry season and oxygen and temperature in the rainy season. Likewise, most of these environmental variables were higher in the outer zone of the estuary and lower in the inner stations. Alkalinity and nitrite values were within the permitted ranges, while phosphates and nitrates indicated low water quality. There was a significant direct influence of temperature and oxygen on alkalinity and nitrites. However, for phosphates, no significant influence of environmental variables was found, suggesting a greater influence by fluvial and anthropogenic discharges, which produce a decrease in the environmental quality of the estuary.

Indígenas tristes y degenerados: la mirada psiquiátrica de Hermilio Valdizán sobre la diferencia racial en Perú, 1910-1925 / Sad and degenerate indigenous: the psychiatric view of Hermilio Valdizán on racial difference in Peru, 1910-1925

Resumen Hermilio Valdizán publicó numerosos trabajos sobre lo que se denominó folklor psiquiátrico, entendido como las formas de comprender y tratar las enfermedades mentales por parte de los indígenas, tanto del pasado colonial y prehispánico como del presente del autor. En este artículo analizamos los textos de Valdizán sobre las características psiquiátricas y psicológicas de los indígenas peruanos. Desde la perspectiva de este psiquiatra, los indígenas contemporáneos eran restos arqueológicos del antiguo imperio inca, ruinas en proceso de degeneración. En un contexto marcado por el indigenismo donde se buscaba integrar al indio, la psiquiatría desempeñó un papel conservador y racista que reprodujo modelos evolucionistas del siglo XIX.

Abstract Hermilio Valdizán published several papers on what was called psychiatric folklore, understood as the ways of understanding and treating mental illnesses by indigenous people, both from the colonial and pre-Hispanic past and from the author's present. In this article, we analyze Valdizán's texts on the psychiatric and psychological characteristics of indigenous Peruvians. From the perspective of this psychiatrist, contemporary indigenous people were archaeological remains of the ancient Inca empire, ruins in the process of degeneration. In a context marked by indigenism, in which it was sought to integrate the Indians, psychiatry played a conservative and racist role that reproduced evolutionary models of the nineteenth century.

Presence of periodontal pathogenic bacteria in blood of patients with coronary artery disease.

It has been hypothesised that oral bacteria can migrate, through the blood, from the mouth to the arterial plaques, thus exacerbating atherosclerosis. This study compared bacteria present in the peripheral blood of individuals with and without coronary artery disease (CAD). RNA sequences obtained from blood were downloaded from GEO (GSE58150). Eight patients with coronary artery calcification (CAC) scoring > 500 and eight healthy individuals were analysed. After conducting quality control, the sequences were aligned to the hg38 reference genome using Hisat2. Bacterial taxa were analysed by inputting the unmapped sequences into Kraken. Ecological indices were calculated using Vegan. The package DESeq2 was used to compare the counts of bacteria per standard rank between groups. A total of 51 species were found only in patients with CAD and 41 were exclusively present in healthy individuals. The counts of one phylum, one class, three orders, two families and one genus were significantly different between the analysed groups (p < 0.00032, FDR < 10%), including the orders Cardiobacteriales, Corynebacteriales and Fusobacteriales. Twenty-three bacterial species belonging to the subgingival plaque bacterial complexes were also identified in the blood of individuals from both the groups; Fusobacterium nucleatum was significantly less frequent in patients with CAD (p = 0.0012, FDR = 4.8%). Furthermore, the frequency of another 11 bacteria differed significantly among patients with CAD than that among healthy individuals (p < 0.0030, FDR < 10%). These bacteria have not been previously reported in patients with atherosclerosis and periodontitis. The presence of members of the subgingival plaque bacterial complexes in the blood of patients with CAC supports the hypothesis that the periodontopathogens can be disseminated through the blood flow to other body parts where they may enhance inflammatory processes that can lead to the development or exacerbation of atherosclerosis.

Influence of water quality on the macroinvertebrate community in a tropical estuary (Buenaventura Bay).

The anthropogenic discharges of inorganic nutrients impact water quality, affecting the macroinvertebrate assemblage and food safety. The main objective of this study was to examine the seawater quality and macroinvertebrate dynamics in muddy habitats of Buenaventura Bay, Colombian Pacific. Macroinvertebrates were captured using artisanal trawl nets during different seasons and along four sampling sites. Multivariate analyses (canonical correspondence analysis and generalized additive model) were used to assess the effects of variations in nitrite, nitrates, phosphate concentrations, and physicochemical variables (salinity, pH, dissolved oxygen [DO], temperature, and total dissolved solids [TDS]) of water on the macroinvertebrate assemblage. Richness was the highest at sites with high salinity and temperature and low concentrations of nitrites and TDS. The densities of the commercial shrimp species Xiphopenaeus riveti and Rimapenaeus byrdi were the highest at sites with higher DO and alkalinity, and lower nitrate concentrations. The swimming crab Callinectes arcuatus was dominant at sites with low water quality. In summary, in the transitional season and at the inner sites of Buenaventura Bay, it was observed the lowest water quality due to high nitrate concentration. High nitrate concentration was highlighted as the main anthropogenic factor that could decrease the capture of target macroinvertebrate species for food and livelihoods of artisanal fishermen and their families. Thus, macroinvertebrate communities may be vulnerable to increased inorganic nutrient inputs, which could affect estuarine water quality and ecosystems services. Integr Environ Assess Manag 2022;18:796-812. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

Hábitos alimentarios de tres especies de peces lenguados (Pleuronectiformes: Achiridae) en la Bahía de Buenaventura, Pacífico Colombiano / Feeding habits of three species of sole fish (Pleuronectiformes: Achiridae) in Buenaventura Bay, Colombian Pacific

Resumen Introducción: La dinámica de las condiciones ambientales influencia la variación del alimento disponible para los organismos estuarinos, afectando el consumo de alimento de los organismos bentónicos como los lenguados, esenciales para establecer y monitorear la calidad ambiental en estos ecosistemas. Objetivo: Determinar los hábitos tróficos de tres especies de la familia Achiridae en la Bahía de Buenaventura, Pacífico colombiano. Métodos: Los peces se recolectaron por medio de pesca de arrastre artesanal. Así mismo, en laboratorio se determinó la dieta de cada una de las especies y se calcularon diferentes índices tróficos, registrando diferencias en los hábitos alimentarios entre estas especies. Resultados: Se recolectó un total de 159 peces del género Achirus, siendo la especie más abundante Achirus klunzingeri (98), luego Achirus mazatlanus (44) y finalmente Achirus scutum (17). La dieta de A. scutum se basó en detritos, la de A. mazatlanus en detritos y peces y la de A. klunzingeri en crustáceos y peces. Los individuos de A. klunzingeri presentaron diferencias en su dieta entre la zona interna y externa del estuario, en la zona interna los peces fueron la presa principal y en la zona externa fueron los crustáceos. Las especies A. klunzingeri y A. mazatlanus presentaron ingesta de microplásticos, principalmente fibras alargadas e incoloras presentes en individuos de todas las tallas. La dinámica de los hábitos tróficos de A. klunzingeri, se relacionaron con algunas variables ambientales, como temperatura, trasparencia y oxígeno disuelto. Por ejemplo, estas tres variables presentaron correlaciones negativas con el ítem peces, y positivas para la categoría crustáceos. Conclusión: Se evidenció que estas especies son generalistas y que las condiciones ambientales no solo influenciaron la dinámica del consumo alimentario, sino que también, determinaron la presencia de los microplásticos.

Abstract Introduction: The dynamic of the environmental conditions influences the availability of the food resources for the estuarine organisms, affecting the food consumption of the benthic organism such as the soles, which are essential for establishing and monitoring the environmental quality of these ecosystems. Objective: To determine the trophic habits of three species of the Achiridae family in Buenaventura Bay, Colombian Pacific. Methods: Fish were captured using artisanal trawling. Then, the diet of each species was determined and different trophic indexes were calculated registering differences in alimentary habits among species. Results: It was collected a total of 159 fishes of the genus Achirus, being the most abundant Achirus klunzingeri (98), then Achirus mazatlanus (44) and finally Achirus scutum (17). The diet of A. scutum was based on detritus, the diet of A. mazatlanus was mainly detritus and fish whereas the diet of A. klunzingeri presented a dynamic pattern based mainly on crustaceans and fish. The individuals of Achirus klunzingeri presented differences in the diet between the internal and external area of the estuary, in the internal zone the fish were the main prey while in the external zone were the crustaceans. The species A. klunzingeri and A. mazatlanus presented ingestion of microplastics, mainly elongated and colorless fibers which were present in individuals of all sizes. The dynamic of the trophic habits of A. klunzingeri was related to the environmental variables such as temperature, transparency and dissolved oxygen. For example, these three variables presented negative correlations with the item fishes, and positive for the crustacean category. Conclusions: Despite the generalist nature of the studied species, the environmental conditions, not only influenced the food consumption dynamic, but also determined the presence of microplastics.

Food insecurity and the double burden of malnutrition in Colombian rural households.

OBJECTIVE: This study aimed to examine in Colombian rural households the association between different severity levels of household food insecurity and the presence of the double burden of malnutrition (SCOWT), defined as the coexistence of a stunted child under 5 years of age and an overweight or obese (OWOB) mother. DESIGN: A secondary data analysis was conducted using cross-sectional data from the Colombian National Nutritional Survey (ENSIN) 2015. Household food insecurity status was assessed by using the Latin-American and Caribbean Food Security Scale (ELCSA). The household SCOWT status (child stunting and OWOB mother) was determined using anthropometric data from a mother and her child. SETTING: Rural Colombia. PARTICIPANTS: Totally, 2·350 mother-child pairs living in the same household. RESULTS: Sixty-two per cent of the households were food-insecure and SCOWT was present in 7·8 % of the households. Moderate (OR: 2·39, 95 % CI (1·36, 4·21)) and severe (OR: 1·86, 95 % CI (1·10, 3·15)) food insecurity was associated with SCOWT in an unadjusted logistic regression. Only moderate food insecurity remained significantly associated with SCOWT in a multivariate logistic regression (adjusted OR: 2·41, 95 % CI (1·24, 4·68)). CONCLUSIONS: Colombian rural areas are not exempt from the worldwide concern of increasing OWOB rates while stunting is still persistent. These results highlight the need of implementing double-duty rural actions targeting the most vulnerable households to SCOWT, particularly in terms of overcoming food insecurity beyond hunger satisfaction to prevent all forms of malnutrition.

Analysis of Mental Health Disease Trends Using BeGraph Software in Spanish Health Care Centers: Case Study.

BACKGROUND: In the era of big data, networks are becoming a popular factor in the field of data analysis. Networks are part of the main structure of BeGraph software, which is a 3D visualization application dedicated to the analysis of complex networks. OBJECTIVE: The main objective of this research was to visually analyze tendencies of mental health diseases in a region of Spain, using the BeGraph software, in order to make the most appropriate health-related decisions in each case. METHODS: For the study, a database was used with 13,531 records of patients with mental health disorders in three acute medical units from different health care complexes in a region of Spain. For the analysis, BeGraph software was applied. It is a web-based 3D visualization tool that allows the exploration and analysis of data through complex networks. RESULTS: The results obtained with the BeGraph software allowed us to determine the main disease in each of the health care complexes evaluated. We noted 6.50% (463/7118) of admissions involving unspecified paranoid schizophrenia at the University Clinic of Valladolid, 9.62% (397/4128) of admissions involving chronic paranoid schizophrenia with acute exacerbation at the Zamora Hospital, and 8.84% (202/2285) of admissions involving dysthymic disorder at the Rio Hortega Hospital in Valladolid. CONCLUSIONS: The data analysis allowed us to focus on the main diseases detected in the health care complexes evaluated in order to analyze the behavior of disorders and help in diagnosis and treatment.

Thermal effects vary predictably across levels of organization: empirical results and theoretical basis.

Thermal performance curves have provided a common framework to study the impact of temperature in biological systems. However, few generalities have emerged to date. Here, we combine an experimental approach with theoretical analyses to demonstrate that performance curves are expected to vary predictably with the levels of biological organization. We measured rates of enzymatic reactions, organismal performance and population viability in Drosophila acclimated to different thermal conditions and show that performance curves become narrower with thermal optima shifting towards lower temperatures at higher levels or organization. We then explain these results on theoretical grounds, showing that this pattern reflects the cumulative impact of asymmetric thermal effects that piles up with complexity. These results and the proposed framework are important to understand how organisms, populations and ecological communities might respond to changing thermal conditions.