ABSTRACT Flours from wheat, corn, lentils, and rice are essential for the formulation of various high-consumption foods in the Chilean population. The extrusion process is widely used by the food industry to generate properties that allow for the instant reconstitution of flours. However, this technological process affects the nutritional properties of the carbohydrates (CHO) in the food ingredient, including quantity, stability, and digestibility; characteristics that directly impact the glycemic response of individuals and the glycemic index of foods. This review analyzes the effect of extrusion on the nutritional properties of CHO in foods made from commonly consumed flours in Chile. Factors such as temperature, and to a lesser extent, humidity, and speed used in the extrusion process, along with the origin of the grain used, determine the healthy properties of CHO in extruded flours. The utility of adjusting the mentioned variables in the extrusion process would allow for the standardization of industrial scaling in the production of extruded foods that would positively impact the starch hydrolysis rate and glycemic index of wheat, corn, lentil, or rice flours, and foods formulated from them.

RESUMEN Las harinas de trigo, maíz, lentejas y arroz son elementales para la formulación de distintos alimentos de alto consumo en la población chilena. El proceso de extrusión es ampliamente utilizado por la industria alimentaria para generar propiedades que permitan la reconstitución instantánea de harinas. Sin embargo, dicho proceso tecnológico; afecta la cantidad, la estabilidad y la digestibilidad de los hidratos de carbono (CHO) del ingrediente alimentario. Estas propiedades nutricionales impactan directamente en la respuesta glicémica de los individuos y en el índice glicémico (IG) de los alimentos. La presente revisión analiza el efecto de la extrusión sobre las propiedades nutricionales de los CHO de alimentos elaborados a partir de harinas de consumo habitual en Chile. Factores como la temperatura, y en menor grado, la humedad y velocidad utilizadas en el proceso de extrusión, junto con el origen del grano utilizado, determinan las propiedades nutricionales de CHO presente en harinas extruidas. El estudio, control y estandarización de estas variables operacionales permitiría estandarizar la elaboración industrial de productos extruidos, impactando favorablemente; sobre la velocidad de hidrólisis de almidón y el IG de harinas de trigo, maíz, lentejas o arroz; y de alimentos formulados a partir de ellas.

Abstract Introduction As a measure for controlling COVID-19, lockdown has had a psychological impact on people. Since subjective well-being (SW) has been positively associated with mental health, the identification of its predictors in this context will enable it to be strengthened. Objective To generate and test explanatory models for SW in men and women under lockdown due to the pandemic. Method Four thousand seven hundred and seventy-one inhabitants of Mexico, with paid employment, under lockdown, answered a set of instruments via the Internet that evaluated positive and negative psychological factors in addition to SW. Based on correlation and multiple regression analysis, models were proposed for men and women, which were tested by path analysis. Results Both models successfully fit the data and explained a high proportion of the SW variance. Spiritual strength was the best predictor, mainly for women, while the capacity for enjoyment was central to the models, mediating the effect of empathy and depression. Discussion and conclusion SW is significantly predicted by the factors studied, especially spiritual strength and capacity for enjoyment, which seem to provide men and women with fortitude and meaning of life in adverse circumstances such as today’s.

Resumen Introducción El confinamiento, como medida de control para el COVID-19, ha tenido un impacto psicológico en las personas. El bienestar subjetivo (BS) se ha asociado positivamente con la salud mental, por lo que la identificación de sus predictores en el presente contexto permitirá su fortalecimiento. Objetivo Generar y probar modelos explicativos del BS en mujeres y hombres confinados por la pandemia. Método 4,771 habitantes de México, con empleo remunerado, en confinamiento, contestaron vía Internet una batería de instrumentos que evaluaban, además del BS, factores psicológicos positivos y negativos. A partir de un análisis de correlación y regresión múltiple, se propusieron modelos para mujeres y hombres, que se probaron mediante análisis de senderos. Resultados Ambos modelos se ajustaron satisfactoriamente a los datos y explicaron una alta proporción de la varianza del BS. La fortaleza espiritual resultó el mejor predictor, principalmente para las mujeres; la capacidad de disfrute ocupó un lugar central en los modelos, mediando el efecto de la empatía y la depresión. Discusión y conclusión El BS es predicho significativamente por los factores estudiados, en particular por la fortaleza espiritual y la capacidad de disfrute, que parecen aportar, a mujeres y hombres, entereza y sentido de vida en circunstancias adversas como la actual.

RESUMEN Objetivo: Describir los resultados de la nefrectomía laparoscópica en pacientes con riñones excluidos benignos, malignos y de donantes. Material y métodos: Estudio de serie de casos, retrospectivo, realizado en el Hospital Cayetano Heredia entre agosto del 2013 y mayo del 2019. Se incluyeron pacientes con riñones no funcionantes de cualquier etiología y riñón contralateral funcionante. Se excluyendo pacientes con pionefrosis severa. Se registraron sus características clínicas, demográficas, índice de masa corporal, etiología del riñón no funcionante, tasa de conversión, lateralidad, tiempo operatorio, histopatología de los riñones intervenidos, complicaciones, necesidad de transfusión, estancia hospitalaria y evolución de los pacientes intervenidos. Resultados: Se evaluaron 70 pacientes; en 39 (55,8%) se realizó nefrectomía laparoscópica simple por patología benigna, en 23 (32,8%) nefrectomía radical laparoscópica por cáncer y en 8 (11,4%) nefrectomía laparoscópica donante vivo. En 7 pacientes se tuvo que convertir a cirugía abierta. La media del tiempo operatorio fue 188,94 ± 33,41 min. Los resultados histopatológicos fueron pielonefritis crónica y carcinoma renal. No hubo variaciones clínicamente significativas en los niveles de hemoglobina, hematocrito, urea, creatinina. Las complicaciones según clasificación de Clavien: Grado I: 21(30%), II: 9(12,8%) y V: 1(1,4%). La media del tiempo de hospitalización fue 4,66 ± 2,97 días, con buena evolución postoperatoria en el 85,7% de los pacientes. Conclusión: La nefrectomía laparoscópica para riñones excluidos de patología benigna como maligna y de donantes de riñón, es una técnica mínimamente invasiva, reproducible, segura, efectiva y una alternativa a la cirugía abierta.

SUMMARY Objective: To report the findings of laparoscopic nephrectomies in patients with malignant, benignant and donor conditions. Material and Methods : A retrospective case series carried-out at Cayetano Heredia Hospital between August 2013 and May 2019. Patients with non-functioning kidneys of any etiology and contra lateral kidney functioning were included. Patients with severe pionephrosis were excluded. Demographic, clinical, body mass index, etiology of the nonfunctioning kidney, conversion rate, laterality, operating time, histopathology of the resected kidneys, complications, need for blood transfusion, hospital stay and clinical evolution. Results: 70 patients were evaluated; in 39 (55.8%) a simple laparoscopy for benign entities was performed; in 23 (32.8%) a radical nephrectomy for cancer was performed and in 8 (11.4%) a laparoscopy was performed for living donors. In 7 patients the laparoscopic procedure converted into open surgery. Mean operating time was 188.94 ± 33.41 min. Main histopathological findings were chronic pyelonephritis and renal carcinoma. Complications by Clavien classification were: Grade I: 21(30%), II: 9(12.8%) and V: 1(1.4%). Mean hospital stay was 4.66 ± 2.97 days; 85.7% had good clinical evolution. Conclusion : Laparoscopic nephrectomy for benign and malignant conditions as well as for kidney donors is a minimally invasive technique which is reproducible, safe, effective and therefore represents an alternative to open surgery.

ABSTRACT Objective: To study the association of SLC16A11 gene variants with obesity and metabolic markers in nondiabetic Chilean adults. Materials and methods: This cross-sectional study included 263 non-diabetic adults. The genotype of the rs75493593 polymorphism of SLC16A11 gene was performed by real-time PCR. It's association with adiposity markers (body weight, BMI, waist circumference and fat mass percentage), metabolic markers (glucose, insulin, HOMAIR, leptin, total cholesterol, LDLc, HDLc, triglycerides, ALT, GGT and hsCRP) and blood pressure was analyzed by linear regression. Results: The minor allele (T) of the SLC16A11 gene (rs75493593) has a frequency of 29.7% among Chileans. Risk genotypes (GT and TT) were associated with a significant 1.49 mU/l increase in plasmatic insulin for each copy of the minor allele (95% CI: 0.12, 2.87, p < 0.05). This association remained significant after adjusting for socio-demographic variables, physical activity and smoking (1.36 mU/l, 95% CI: 0.16, 2.58 p < 0.05), but was lost when BMI was included as a confounding factor. Higher BMI was also significantly associated with polymorphic genotypes in SLC16A11, independent of socio-demographic variables. Conclusion: The minor allele of the SLC16A11 gene (T) is highly prevalent among Chileans and is associated with increased insulin and BMI in nondiabetic individuals. These findings suggest that the genetic variant in SLC16A11 is not only associated with type 2 diabetes as previously shown in Mexicans, but is also related to early metabolic alterations in healthy subjects that may lead to type 2 diabetes.

Resumen La pérdida perinatal, genera problemas psicopatológicos en algunas mujeres. Para elaborar el duelo se activan recursos psicológicos, tales como los estilos de afrontamiento. El objetivo del estudio fue determinar la relación entre el tipo de afrontamiento y la intensidad del duelo, y conocer los estilos de afrontamiento que resultaron predictores confiables para la intensidad del duelo perinatal. Se realizó un estudio no experimental, transversal, correlacional con 100 mujeres mexicanas que tuvieron pérdida perinatal; se aplicó la Perinatal Grief Scale traducida al español y la Escala de Estilos de Afrontamiento de Lazarus y Folkman. Resultaron predictores confiables de la intensidad del duelo: la edad gestacional del bebé, el tiempo transcurrido desde la pérdida y los estilos de afrontamiento confrontativo, escape-evitación y resolución de problemas. Se concluye que los estilos de afrontamiento impactan en la intensidad del duelo, de ahí la importancia de centrar la intervención psicológica en ellos.

Abstract Perinatal loss causes psychopathological problems in some women; during grief, psychological resources, such as coping styles are activated to elaborate the loss. The objective of the study was to know the relationship between the type of coping and the intensity of bereavement, as well as to know the coping styles that were reliable predictors for the intensity of perinatal bereavement. A cross-sectional study was conducted, ex post facto with 100 Mexican women who suffered a perinatal loss; the perinatal grief scale translated into Spanish and the scale of coping styles of Lazarus and Folkman were applied. The results show the gestational age, the time elapsed since the loss, the styles of confrontational coping, escape-avoidance and problem solving as good predictors of the intensity of perinatal bereavement. It is concluded that the coping styles impact on the intensity of the grief and it is important focus psychological intervention on it.

Resumen Este artículo presenta un análisis teórico del paradigma de los sistemas complejos para el estudio del turismo, y aborda la complejidad que atraviesa los modelos de dicho estudio. A partir de una revisión, el objetivo propuesto fue realizar un diagnóstico diferenciado en dos localidades: Santa Fe de Antioquia (Colombia) y Malinalco (México). Para alcanzar dicho objetivo se utilizó la metodología del turismo armónico (META), ya que esta surge de la discusión teórica e incorporación de atributos de la sustentabilidad para explicar el turismo como parte de un sistema complejo. De allí que se obtuvo la caracterización del sistema en cada una de las localidades mencionadas, a partir de las variables que comprende la META. Como principales resultados se analizan similitudes entre las dos localidades y una fuerte evolución de la actividad turística, elemento que incide en el desarrollo local y que ha propiciado discusiones sobre la metodología y la aplicación de los conceptos en la practicidad. Ideas destacadas: artículo de investigación que analiza los atributos de la sustentabilidad como parte del sistema complejo, para generar una caracterización que considera las variables del modelo de turismo armónico (META) en dos localidades: Santa Fe de Antioquia, Colombia y Malinalco, México. Se obtienen resultados que muestran similitudes entre las dos localidades y una evolución de la actividad turística.

Abstract This article presents a theoretical analysis of the paradigm of complex systems for the study of tourism and addresses the complexity through the models of it. Based on a review, the proposed objective relied on performing a differentiated diagnosis in two locations: Santa Fe de Antioquia (Colombia) and Malinalco (Mexico). The harmonic tourism methodology (HTM) was used to achieve this objective since this arises from the theoretical discussion and incorporation of sustainability attributes to explain tourism as part of a complex system. Hence, from each of the aforementioned localities emerged the characterization of the system, based on the variables included in the HTM. The main results are the analysis of the similarities between the two localities and a strong evolution of the tourist activity; an element that affects local development and that has led to discussions on the methodology and application of the concepts in practicality. Main ideas: Research article that analyzes the attributes of sustainability as part of the complex system, to generate a characterization that considers the variables of the harmonic tourism model (HTM) in two localities: Santa Fe de Antioquia, Colombia and Malinalco, Mexico. The obtained results show similarities between the two localities and an evolution of the tourist activity.

Resumo Este artigo apresenta uma análise teórica do paradigma de sistemas complexos para o estudo do turismo, e aborda a complexidade que atravessa os modelos do referido estudo. Com base em uma revisão, o objetivo proposto foi realizar um diagnóstico diferenciado em dois locais: Santa Fe de Antioquia (Colômbia) e Malinalco (México). Para atingir esse objetivo, foi utilizada a metodologia do turismo harmônico (METH), pois decorre da discussão teórica e da incorporação de atributos de sustentabilidade para explicar o turismo como parte de um sistema complexo. Assim, a caracterização do sistema foi obtida em cada uma das localidades mencionadas, com base nas variáveis incluídas no METH. Como principais resultados, são analisadas semelhanças entre as duas localidades e uma forte evolução da atividade turística, um elemento que afeta o desenvolvimento local e que levou a discussões sobre a metodologia e aplicação dos conceitos na praticidade. Ideias destacadas: artigo de pesquisa que analisa os atributos da sustentabilidade como parte do complexo sistema para gerar uma caracterização que considere diferente do modelo de turismo harmônico (METH) nas localidades: Santa Fe de Antioquia, Colômbia e Malinalco, México. A obtenção apresenta semelhanças entre as duas cidades e uma evolução da atividade turística.

Resumen El objetivo de este trabajo fue describir los elementos que configuran la percepción de seguridad escolar en estudiantes de secundaria. Se presenta un estudio cualitativo con enfoque sistémico ecológico. Por medio de un muestreo teórico, se incluyeron a 22 estudiantes, 50 % hombres con 12 a 16 años, quienes participaron en un grupo focal, previo consentimiento informado de los padres. Los datos recabados fueron audio grabados; se transcribieron y analizaron con el método de análisis de contenido por medio del programa Maxqda 18. Se identificaron 4 categorías que configuran la percepción de seguridad escolar: 1) condiciones de la escuela (físicas y organizacionales); 2) elementos relacionados con los maestros; 3) elementos relacionados con los compañeros, y 4) elementos relacionados con los padres. Los hallazgos sugieren que las condiciones físicas y organizacionales mantienen un papel importante en la con figuración del sentido de seguridad escolar. Asimismo, la cercanía y apoyo recibido de actores del contexto (maestros, padres y alumnos) promueve una percepción más positiva de la seguridad.

Abstract The aim of this study was to describe the individual elements that configure the school safety perception in middle school students. We designed a qualitative study, with a systemic and ecological approach. Using a theoretical sampling, we included 22 students, 50% man with an age from 12 to 16 years old, who participated in a focus group, previous informed consent from the parents. The session was videotaped, the data was transcribed and analyzed using content analysis with the program MAXQDA 18. We identified four categories of factors that configure the student’s school safety perception: 1) school conditions (physical and organizational); 2) elements related to teachers; 3) elements related to peers; and 4) elements related to parents. The findings suggest that the school´s physical and organizational conditions have an important role in the configuration of the school safety perception. Likewise, the closeness and support received by actors from the school context (teachers, parents and peers) favor a more positive perception of school safety.

Background Walking speed is a strong predictor of non-communicable diseases and mortality. Aim To investigate the association of self-reported walking pace with adiposity, metabolic and cardiovascular markers in the Chilean population. Material and Methods Analysis of data from 5,077 participants of the 2009-2010 National Health Survey (ENS 2009-2010). Walking speed was self-reported as average or slow pace. Body mass index (BMI), waist circumference (WC), blood pressure, blood glucose, glycosylated hemoglobin and lipid profile were the outcome. Results In Chile, 11% (95% confidence intervals [CI]: 10.0; 12.7) of the population reported a slow walking pace. Compared with average walking people, those reporting a slow pace had a higher body weight (difference (∆) 5.65 kg [95% CI: 3.22; 8.09], p < 0.01), BMI (D 2.48 kg/m 2 [95% CI: 1.53; 3.44], p < 0.01), WC (D 6.23 cm [95% CI: 4.12; 8.34], p < 0.01), serum triglycerides (D 30,9 mg/dl [95% CI: 5,31; 57,5], p = 0.018), and lower HDL cholesterol (D -2.32 mg/dl [95% CI: -4,24; -0,34], p = 0.022). Those reporting a slow pace had also a higher odd of being obese (odds ratio (OR): 2.46 [95% CI: 1.82; 3.33], p < 0.01), being diabetic (OR: 1.54 [95% CI: 1.02; 2.40], p = 0.018) and having metabolic syndrome (OR: 2.03 [95% CI: 1.30; 3.18], p = 0.002). Conclusions In Chilean adults, slow walking pace is associated with and unfavorable adiposity and lipid profile, including a higher probability of being obese, diabetic and having metabolic syndrome.

Abstract Background: genetic variants of the FTO gene confer the highest risk of obesity identified so far. Associations between the FTO gene and alterations in metabolic markers have been reported in different populations but not in Chileans. The aim of this study was therefore to investigate the association of rs3751812 gene polymorphism with adiposity and metabolic markers in the Chilean adult population. Methods: genotype of the FTO gene was determined in 409 participants from the GENADIO study. Adiposity markers (body weight, BMI, % fat mass and waist circumference), metabolic markers (glycemia, insulin, HOMAIR, total cholesterol, LDL cholesterol, HDL cholesterol, triglycerides, leptin, ALT, GGT, PCRhs) and blood pressure were measured. The association between the FTO genotype and the different markers was determined using linear regression analyses. Results: there was an association between the polymorphism and all adiposity markers as well as insulin, HOMAIR, leptin and HDL cholesterol (p < 0.05) in the fully adjusted model. For total cholesterol, triglycerides, LDL cholesterol, ALT, GGT and PCRhs, the association disappeared after adjustment by body mass index. Conclusion: our findings verify the association between the FTO rs3751812 polymorphism with obesity, hyperinsulinemia, hyperleptinemia and lower levels of HDL cholesterol in the Chilean population. These alterations could increase the risk of diabetes mellitus type II and metabolic syndrome.

Resumen Antecedentes: el gen FTO presenta las variantes genéticas que confieren el mayor riesgo de obesidad hasta ahora identificado. Se han reportado asociaciones de polimorfismos del gen FTO y alteraciones de marcadores metabólicos en diversas poblaciones, pero no en chilenos. El objetivo de este estudio fue investigar la asociación del polimorfismo rs3751812 con marcadores de adiposidad y metabólicos en adultos chilenos. Métodos: se determinó el genotipo del FTO en 409 participantes del estudio GENADIO. Se evaluaron marcadores de adiposidad (peso corporal, índice de masa corporal [IMC], % de masa grasa y perímetro de cintura), marcadores metabólicos (glicemia, insulina, HOMAIR, colesterol total, colesterol LDL, colesterol HDL, triglicéridos, leptina, ALT, GGT, PCRus) y presión arterial. La asociación entre el genotipo FTO y los distintos marcadores se realizó mediante análisis de regresión lineal. Resultados: tras ajustar los marcadores por las variables de confusión, se evidenció una asociación significativa de los genotipos de riesgo con todos los marcadores de adiposidad estudiados y con los marcadores metabólicos: insulina, HOMAIR, leptina y colesterol HDL (p < 0,05). Para colesterol total, triglicéridos, colesterol LDL, ALT, GGT y PCRus, la asociación perdió significancia al ajustar por IMC. Conclusión: este estudio revela que existe una asociación entre el polimorfismo rs3751812 del gen FTO con obesidad, hiperinsulinemia, hiperleptinemia y bajos niveles de colesterol HDL en la población chilena, lo que podría aumentar el riesgo de desarrollar diabetes mellitus tipo II y síndrome metabólico.

Abstracts: Cardiovascular diseases and cancer are culturally transmitted chronic diseases and the two main causes of death globally. In addition to their high morbidity and mortality, these diseases are closely related, due to their common risk factors and biological mechanisms. The high incidence of cardiovascular diseases in cancer patients is widely known phenomenon, which has oriented the development of the interdisciplinary field of cardio-oncology Nonetheless, there is emerging evidence in the last decade suggesting a potential role for cardiovascular diseases in the onset of cancer. A recent publication by Meijers et al in the scientific cardiovascular journal Circulation showed that heart failure significantly contributes to tumor growth, confirming previous epidemiological findings suggesting this hypothesis. Moreover, this study indicates that tumor growth may be stimulated by the secretion of factors from the failing heart, opening a wide spectrum of research areas in what may be suggested as a new field in medicine that would seek to develop new strategies to treat and prevent cancer in patients with cardiovascular diseases. This article will review shared risk factor and common cellular and molecular pathways in cardiovascular diseases and cancer, the contribution of Meijers et al to a better understanding of the connection of these diseases and future perspectives in light of the new evidence.

Resumen: Las enfermedades cardiovasculares y el cáncer son enfermedades crónicas transmisibles culturalmente, y las dos causas principales de mortalidad en el mundo. Además del gran impacto sobre la mortalidad y morbilidad, estas enfermedades han mostrado un alto grado de relación entre ellas debido, entre otras razones, a que comparten factores de riesgo y mecanismos biológicos. La alta incidencia de enfermedad cardiovascular en pacientes con cáncer es un fenómeno conocido que ha orientado el desarrollo del campo interdisciplinario de la cardio-oncología. Sin embargo, en la última década han surgido evidencias que muestran el papel que desempeñan las enfermedades cardiovasculares en el desarrollo de cáncer. Un estudio reciente publicado por Meijers y cols, en agosto de 2018 en Circulation, mostró que la insuficiencia cardiaca post-infarto del miocardio contribuye significativamente al desarrollo del cáncer de colón, apoyando lo obtenido en estudios epidemiológicos anteriores. Este estudio también sugiere que el crecimiento tumoral podría producirse por factores secretados por el corazón insuficiente abriendo un amplio grupo de posibilidades de investigación en lo que sería un nuevo campo de la medicina cuyo propósito sería el desarrollo de nuevas estrategias para el seguimiento y tratamiento del cáncer en pacientes con enfermedades cardiovasculares. El presente artículo revisa los factores de riesgo, y mecanismos celulares y moleculares, que son comunes en las enfermedades cardiovasculares y el cáncer, la contribución del trabajo de Meijers y cols hacia un mayor entendimiento de la interrelación entre estas patologías y las perspectivas futuras con respecto a los nuevos hallazgos.

ABSTRACT Although physical activity (PA) is a protective factor against non-communicable diseases, there is an important proportion of the population who do not meet PA guidelines. Our aim was to investigate how adherence to PA guidelines varies across different age groups in the Chilean population. 5,133 participants from the 2009-2010 Chilean Health Survey were included in this study. PA was measured using the Global Physical Activity Questionnaire (GPAQ). Physical inactivity was defined as <600 MET/min/week of moderate to vigorous intensity PA. Logistic regression was used to investigate the association of PA with age. The main finding of this shows that women were more likely to be inactive than men (p<0.0001). Physical inactivity prevalence varied slightly between 20 and 59 years. However, among those individuals aged >60 years the prevalence increased markedly, reaching 63% and 56% for women and men aged >80 years, respectively. These findings confirm the necessity of promoting PA across the lifespan, but more importantly, these results suggest that more promotion and opportunities for engaging in PA should be created especially for older adults, who are more likely to be physically inactive.

RESUMEN A pesar de que la actividad física (AF) es un factor protector contra las enfermedades crónicas no transmisibles, un gran porcentaje de la población no cumple los niveles mínimos recomendados. El objetivo fue investigar como varían los niveles de práctica de AF entre los diferentes grupos etarios en la población chilena. Se incluyeron 5.133 participantes de la Encuesta Nacional de Salud 2009-2010. La AF fue determinada utilizando el cuestionario GPAQ. La inactividad física fue definida como <600 MET/min/semana de AF moderada a vigorosa. La asociación entre AF y edad fue investigada por sexo mediante regresión logística. Las mujeres presentaron una mayor probabilidad de ser físicamente inactivas en comparación a los hombres (p<0,0001). Al analizar la prevalencia de inactividad física por sexo y grupo etario, esta cambió ligeramente entre los 20 a 59 años, pero a partir de los 60 se observó un incremento importante en la prevalencia llegando a 63% y 56% para mujeres y hombres >80 años, respectivamente. Los resultados obtenidos confirman la necesidad de seguir fomentando la práctica regular de AF física a través de todo el ciclo vital, pero en especial sobre los 60 años, ya que este grupo presenta una mayor probabilidad de ser físicamente inactivo.

Abstract Background: cystic fibrosis (CF) is the most common inherited disease in Caucasian population. Nowadays, long survival has led to the emergence of new complications, such as CF bone disease (CFBD), which is characterized by increased fracture risk. Objectives: evaluate the association of bone mineral density (BMD) with lung function and BMD with 25-hydroxivitamin D (25OHD) plasmatic levels in children/adolescents with CF. Methods: we conducted a multicenter, cross-sectional study with clinically stable CF patients between five and 18 years. Weight, height, pubertal development, BMD and body composition (DXA), pulmonary function (FEV1 and FEF25-75) and 25OHD plasmatic levels were measured. Patients answered food intake and physical activity surveys. p values under 0.05 were considered as statistically significant. Results: thirty-seven patients were enrolled, 51% with normal respiratory function. Mean BMD Z-score in lumbar spine and in total body less head were -0.4 and -0.5 respectively. Twenty seven percent had a fat free mass index below the third percentile, 89% had 25OHD levels lower than 30 ng/ml and 78.4% had a low calcium intake. We did not find any correlations between BMD Z-scores, lung function or 25OHD levels. Patients with fat free mass (FFM) below the third percentile had BMD Z-score lower than -1 more frequently, in both locations (p < 0.006 and p < 0.001, respectively). Conclusions: although most assessed patients had normal BMD and normal lung function, a high proportion had low: FFM, calcium intake and 25OHD levels. The association between low FFM and low BMD highlights the importance of improving body composition in CF patients, in order to prevent future CFBD.

Resumen Introducción: la fibrosis quística (FQ) es la enfermedad hereditaria más frecuente en la población caucásica. La mayor sobrevida alcanzada ha favorecido la aparición de la enfermedad ósea (EO) asociada, con el consiguiente aumento del riesgo de fracturas. Objetivo: evaluar la asociación de la densidad mineral ósea (DMO) con la función pulmonar y con la concentración plasmática de 25-hidroxivitamina D (25OHD) en niños y adolescentes con FQ. Métodos: estudio transversal y multicéntrico, de pacientes con FQ de entre cinco y 18 años, clínicamente estables. Se evaluó peso, talla, desarrollo puberal, DMO y composición corporal (DXA), función pulmonar (FEF25-75 y VEF1), 25OHD plasmática e ingesta alimentaria y actividad física por encuestas. Se consideró una diferencia significativa si p < 0,05. Resultados: ingresaron 37 pacientes, 51% con función pulmonar normal. Los DMO-z promedio en columna lumbar y cuerpo total sin cabeza fueron -0,4 y -0,5, respectivamente. El 27% tuvo un índice de masa libre de grasa (IMLG) < p3, el 89% tuvo niveles insuficientes o deficientes de 25OHD y el 78,4% tuvo déficit de ingesta de calcio. No encontramos correlación entre el DMO-z con la función pulmonar ni con la concentración de 25OHD. Los pacientes con MLG < p3 tuvieron con mayor frecuencia DMO-z baja o en riesgo, en ambas localizaciones (p = 0,006 y p = 0,001 respectivamente). Conclusiones: aunque la mayoría de los pacientes tuvo una DMO y una función pulmonar normal, una alta proporción de sujetos presentaron déficit de MLG, baja ingesta de calcio y déficit de 25OHD. La asociación entre déficit de MLG y menor DMO revela la importancia de mejorar este factor para prevenir la enfermedad ósea futura.

Background: Numerous studies have identified the role of Fat-mass-associated-gene (FTO) in the development of obesity. Aim: To investigate the association of FTO gene with adiposity markers in Chilean adults. Material and Methods: 409 participants were included in this cross-sectional study. The association between FTO (rs9939609) genotype and adiposity markers was determined using linear regression analyses. Adiposity markers included were: body weight, body mass index, fat mass, waist circumference, hip circumference and waist/hip ratio. Results: A fully adjusted model showed a significant association between FTO genotype and body weight (2.16 kg per each extra copy of the risk allele [95% confidence intervals (CI): 0.45 to 3.87], p = 0.014), body mass index (0.61 kg.m-2 [95% CI: 0.12 to 1.20], p = 0.050) and fat mass (1.14% [95% CI: 0.39 to 1.89], p = 0.010). The greater magnitude of association was found between the FTO gene and fat mass when the outcomes were standardized to z-score. Conclusions: This study confirms an association between the FTO gene and adiposity markers in Chilean adults, which is independent of major confounding factors.

INTRODUÇÃO: Profissionais e estudantes da área da saúde atendem indivíduos deprimidos em situação de crise e que tentam suicídio, e as atitudes em relação a esses pacientes podem ser determinantes na evolução dos casos. OBJETIVO: Verificar as atitudes de estudantes frente ao paciente suicida. MÉTODO: Trata-se de estudo com delineamento transversal realizado com graduandos da Faculdade de Medicina de Barbacena(MG) em 2013. Os estudantes foram divididos em dois grupos: pré-clínico e pós-clínico. O instrumento utilizado neste estudo foi o Questionário de Atitudes em Relação ao Comportamento Suicida. RESULTADOS: A comparação dos escores médios obtidos em cada grupo evidenciou diferença significativa, com maior escore apresentado pelo grupo pós-clínico (p=0,028). Esse achado indica que estudantes de períodos mais avançados exibem atitudes mais positivas em relação ao suicídio que alunos iniciantes no curso de Medicina. CONCLUSÃO: Observou-se que um contato maior com o paciente suicida e maior conhecimento teórico sobre o suicídio e seus fatores determinantes podem ser capazes de modificar de forma favorável as atitudes dos estudantes.

INTRODUCTION: Both health professionals and students care forpatientsin depression, crisis, orare suicidal, and their attitudes toward such individuals can be a key factor in the outcome of cases. OBJECTIVE: To verify students’ attitudes towards suicidal patients. Method: A cross-sectional study was developed in 2013 with students from the Barbacena University Medical School, in the state of Minas Gerais. The medical students were evaluated and divided into two groups: pre-clinical and post-clinical. The instrument used in this study was the Questionnaire on Attitudes towards Suicidal Behavior. RESULTS: Acomparison of the mean scores obtained in each group revealed a significant difference, with the higher score found among the post-clinical group (p=0.028). This finding indicates that students in the later periods of their course exhibit more positive attitudes towards suicide when compared to beginner medical students. CONCLUSION: It was noted that more contact with suicidal patients and greater theoretical knowledge about suicide and its determinants helped improve the students’ attitudes towards this issue.