ABSTRACT
As novas tecnologias da informação e comunicação, aliadas às novas mídias e redes de comunicação, transformaram privacidade em objeto de consumo. O cenário comunicacional medeia o acesso a produtos e serviços digitais com novos parâmetros de hábito alimentar e estilo de vida saudáveis. A visibilidade confere prestígio às postagens no ambiente on-line, legitimando-as. O objetivo deste estudo foi mapear a representatividade de postagens de celebridades e compreender seus significados no campo da Alimentação e Nutrição. O problema central é o efeito mágico de um comportamento saudável em orientações doutrinárias sobre o comer. Analisamos imagens e textos de seis perfis de nutricionistas que se tornaram celebridades no Brasil. As postagens guiam seguidores, reproduzindo modelos de respostas rápidas que prometem a felicidade na ilusão de uma disciplina e do controle de si. As páginas operam como 'oráculos' para uma vida saudável, seguindo uma lógica de comunicação fast thinking, pouco propensa à expressão do pensamento.
New information and communication technologies combined with new media and communication networks have made privacy an object of consumption. The communication scenario mediates access to digital products and services with new parameters of healthy eating habits and lifestyle behaviors. Visibility gives prestige to posts that move through the online environment, legitimizing them. The aim of this study was to map the representativeness of celebrity posts and understand their meanings in the field of Food and Nutrition. The central problem is the magical effect of healthy behavior in doctrinal guidelines on eating. We analyzed images and texts of six profiles of nutritionists who became celebrities in Brazil. Posts guide followers, reproducing rapid response models that promise happiness of the illusion of self-discipline and self-control. The webpages operate as 'oracles' for healthy living, following the logic of a fast thinking communication, not prone to the expression of thought.
Las nuevas tecnologías de la información y la comunicación, combinadas com los nuevos medios y redes de comunicación, han convertido privacidad en objeto de consumo. El escenario comunicacional media el acceso a productos y servicios digitales com nuevos parámetros de hábitos alimentarios y estilos de vida saludables. La visibilidad otorga prestigio a las publicaciones que se mueven por el entorno online, legitimándolas. El objetivo de este estúdio fue mapear la representatividad de las publicaciones de celebridades y comprender sus significados en el campo de la Alimentación y la Nutrición. El problema central es el efecto mágico del comportamiento saludable en las pautas doctrinales sobre la alimentación. Analizamos imágenes y textos de mayor receptividad de seis perfiles de nutricionistas que se convirtieron en celebridades en Brasil. Las publicaciones guían a los seguidores en la resolución de preguntas pragmáticas, reproduciendo modelos de respuestas rápidas que prometen felicidad en la ilusión de una disciplina y un autocontrol. Las páginas operan como 'oráculos' para una vida sana, siguiendo una lógica de comunicación fast thinking, no propensa a la expresión del pensamiento.
Subject(s)
Humans , Diet , Feeding Behavior , Nutritionists , Healthy Lifestyle , Quality of Life , Brazil , Social Networking , Diet, HealthyABSTRACT
Lycopene and beta-carotene are carotenoids widely distributed in fruits and vegetables, with potential anticancer activity. Epidemiological trials rarely provide evidence for the mechanisms of action of these compounds, and their biological effects at different times of treatment are still unclear. The aim of the present study was to determine the effect of carotenoids on the cell cycle and cell viability in human breast cancer cell lines. Human breast cell lines were treated with carotenoids (0.5-10 µM) for 48 and 96 h. Cell viability was monitored using the MTT method (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide; thiazolyl blue). The cell cycle was analyzed by flow cytometry, and apoptotic cells were identified by annexin/propidium iodide (PI) biomarkers. Our data showed a significant decrease in the number of viable breast cancer cells on treatment with carotenoids. Carotenoids also promoted cell-cycle arrest followed by decreased cell viability in the majority of cell lines after 96 h, compared to controls. Furthermore, an increase in apoptosis was observed in cell lines when cells were treated with carotenoids. Our findings show the capacity of lycopene and beta-carotene to inhibit cell proliferation, arrest the cell cycle in different phases, and increase apoptosis. These findings indicate that the effect was cell type-dependent and that carotenoids are potential agents for biological interference with cancer.
