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Silveira L.,Parque Tecnologico Sao Jose dos Campos | Silveira F.L.,Parque Tecnologico Sao Jose dos Campos | Bodanese B.,Chapeco Region Community University | Zangaro R.A.,Parque Tecnologico Sao Jose dos Campos | Pacheco M.T.T.,Parque Tecnologico Sao Jose dos Campos
Journal of Biomedical Optics | Year: 2012

Raman spectroscopy has been employed to identify differences in the biochemical constitution of malignant [basal cell carcinoma (BCC) and melanoma (MEL)] cells compared to normal skin tissues, with the goal of skin cancer diagnosis. We collected Raman spectra from compounds such as proteins, lipids, and nucleic acids, which are expected to be represented in human skin spectra, and developed a linear least-squares fitting model to estimate the contributions of these compounds to the tissue spectra. We used a set of 145 spectra from biopsy fragments of normal (30 spectra), BCC (96 spectra), and MEL (19 spectra) skin tissues, collected using a near-infrared Raman spectrometer (830 nm, 50 to 200 mW, and 20 s exposure time) coupled to a Raman probe. We applied the best-fitting model to the spectra of biochemicals and tissues, hypothesizing that the relative spectral contribution of each compound to the tissue Raman spectrum changes according to the disease. We verified that actin, collagen, elastin, and triolein were the most important biochemicals representing the spectral features of skin tissues. A classification model applied to the relative contribution of collagen III, elastin, and melanin using Euclidean distance as a discriminator could differentiate normal from BCC and MEL. © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). Source

Several factors contribute to the construction of common sense on food with impact on public health. In this study, our hypothesis was that media discourse plays an important structuring role in the process of body aesthetics and food patterns construction and consolidation, producing collective senses that interfere in the choices made by people. The study aimed to recognize the discursive strategies adopted by a media vehicle targeted at women about healthy eating, and their contribution to the formation of common sense on the subject. We analyzed the twelve cover reports of a women's magazine published in 2007, according to the theoretical framework of discourse analysis. A discourse full of ambiguity between beauty and health was observed, with a strong appeal to sensuality and to the cult of the perfect body, predominantly divergent from scientific knowledge in the nutrition area, legitimized by two other cross discourses, the socioaesthetic and the specialized ones. We conclude that the discursive strategies adopted by the media vehicle that was examined contribute to the formation of a common knowledge about eating habits that is fragile and does not enable people to make independent and healthy choices. Source

Oliveira T.A.,Federal University of Santa Maria | Koakoski G.,Federal University of Santa Maria | da Motta A.C.,University Of Passo Fundo | Piato A.L.,Chapeco Region Community University | And 3 more authors.
Hormones and Behavior | Year: 2014

Living animals exploit information released from dead animals to conduct adaptive biological responses. For instance, a recently published study has shown that avoidance behavior is triggered by death-associated odors in zebrafish. Stress can clearly act as an adaptive response that allows an organism to deal with an imminent threat. However, it has not been demonstrated whether these chemical cues are stressful for fish. Here, we confirmed that dead zebrafish scents induce defensive behavior in live conspecifics. Additionally, we show for the first time in fish that these scents increase cortisol in conspecifics. To reach this conclusion, firstly, we exposed zebrafish to multi-sensorial cues (e.g., visual, tactile, chemical cues) from dead conspecifics that displayed defensive behaviors and increased cortisol. Also, when we limited zebrafish to chemical cues from dead conspecifics, similar responses arose. These responses coincide with the decaying destruction of epidermal cells, indicating that defensive and stress responses could take place as an effect of substances emanating from decaying flesh, as well as alarm substance released due to rupture of epidermal cells. Taken together, these results illustrate that living zebrafish utilize cues from dead conspecific to avoid or to cope with danger and ensure survival. © 2014 Elsevier Inc. Source

This essay aims to discuss the acquisition of food by the National School Feeding Program in light of its current legal framework with a view to promote healthy and culturally sound eating habits that help to improve the health of Brazilian school children and promote local development. The study presents an analysis of the current legislation of the National School Feeding Program, evidencing its intention to influence the Brazilian feeding system and the food pattern of its population using school meals, highlighting the gaps that challenge the achievement of major changes in the execution of the program. From this analysis and based on the high and growing consumption of ultra-processed foods in Brazil, and considering the disadvantages of these foods when compared with minimally-processed or fresh foods, a proposal is developed to guide the construction of a list of foods that is consistent with the current legal framework of the Program and its objectives. It is argued that the prevalence of minimally-processed or fresh foods in school meals can be a strategy to rescue the healthy-food heritage and strengthen local development if promoting family farming. Source

Lucas E.M.,Chapeco Region Community University | Garcia P.C.A.,Federal University of Minas Gerais
Check List | Year: 2011

In the present study we report new records of the anurans Hypsiboas curupi, Scinax iittoraiis, Dendropsophus eiegans, and Crossodactyius schmidti for the state of Santa Catarina. These records expand the geographic distribution currently known for these species and contribute for the knowledge of the southern Brazilian anuran fauna. © 2011 Check List and Authors. Source

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