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Your search keyword '"Canellas, Catarine"' showing total 11 results
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11 results on '"Canellas, Catarine"'

1. Characterization of a sacred statuette replica of “Nossa Senhora da Conceição Aparecida” using X-ray spectrometry techniques

Author

Sanches, Francis A.C.R. de A., Nardes, Raysa C., Filho, Hamilton S.G., dos Santos, Ramon S., de Araújo, Olga M.O., Machado, Alessandra Silveira, Calgam, Teresa, Bueno, Regina, Canellas, Catarine, Gonçalves, Elicardo A.S., Assis, Joaquim T., de Freitas, Renato P., de Oliveira, Davi F., Lopes, Ricardo T., and dos Anjos, Marcelino J.

Published
2020
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7. Multielement analysis in serum of healthy population of the metropolitan region of Rio de Janeiro in Brazil by SRTXRF.

Author

Canellas, Catarine G. L., Carvalho, Silvia M. F., Leitão, Roberta G., Bellido, Alfredo V. B., Anjos, Marcelino J., and Lopes, Ricardo T.

Subjects
*BLOOD serum analysis, *HUMAN physiology, *METABOLISM, *PRINCIPAL components analysis, *BODY fluid analysis, *METROPOLITAN areas
Abstract

The determination of multielemental concentrations in physiological fluids is of considerable interest in clinical chemistry. Since it has been established these levels in human serum can be utilized as indicators for several pathological conditions. The multielement composition determination in human serum is important for the investigation of their role in human physiology and metabolism. From this research, more detailed studies on the health of individuals living in the metropolitan region of the state of Rio de Janeiro can be realized in order to improve the quality of life of these individuals. We studied 180 healthy volunteers (80 males and 100 females) aged 19 to 60 years. All the serum samples had been collected of people who live in the urban area of Rio de Janeiro City/Brazil. The measurements were performed at the X-Ray Fluorescence Beamline at the Brazilian National Synchrotron Light Laboratory (LNLS), in Campinas, São Paulo. We were able to determine the concentrations of the following 11 elements: Na, P, S, Cl, K, Ca, Fe, Cu, Zn, Br and Rb. In this study, we used statistical analysis for the principal components. We were able to verify the presence of two factors that divided the elements into two groups: group 1 formed by elements: Cl, K, S and Ca and group 2 by elements Cu and Zn. [ABSTRACT FROM AUTHOR]

Published
2016
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10. Elemental concentrations in skin of patients with fibroeptelial polip using synchrotron radiation total reflection x-ray fluorescence.

Author

Soares, Júlio C. A. C. R., Anjos, Marcelino J., Canellas, Catarine G. L., and Lopes, Ricardo T.

Subjects
SKIN, SYNCHROTRON radiation, OPTICAL reflection, X-ray spectroscopy, TRACE elements in the body
Abstract

In this work, the concentrations of trace elements were measured in acrochordon, a skin lesion also known as skin tag or fibroepithelial polyp, as well as in normal skin from the same patient. The samples were analyzed by Synchrotron Radiation Total Reflection X-ray Fluorescence (SRTXRF) in the Synchrotron Light National Laboratory (LNLS) in Campinas/São Paulo-Brazil. The collection of lesion and healthy skin samples, including papillary dermis and epidermis, has involved 17 patients. It was evaluated the presence of P, S, Cl, K, Ca, Fe, Cu and Zn in the paired samples, which were compared, and significant differences were found in some of them. [ABSTRACT FROM AUTHOR]

Published
2012
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11. Spatial distribution of elements in the spheroids by prostate tumor cells using synchrotron radiation x-ray fluorescence.

Author

Leitão, Roberta G., Santos, Carlos Antônio N., Junior, Antônio Palumbo, Souza, Pedro A. V. R., Canellas, Catarine G. L., Anjos, Marcelino J., Nasciutti, Luiz E., and Lopes, Ricardo T.

Subjects
SPHEROIDAL state, X-ray spectroscopy, SYNCHROTRON radiation, TRACE elements in the body, PROSTATE cancer
Abstract

The formation of three-dimensional cell microspheres such as spheroids has attracted attention as a useful culture technique. In this study, we investigated the trace elemental distribution (mapping) in spheroids derived from tissue prostate cancer (PCa). The measurements were performed in standard geometry of 45° incidence, exciting with a white beam and using an optical capillary with 20 μm diameter collimation in the XRF beam line at the Synchrotron Light National Laboratory (Campinas, Brazil). The results showed that most elements analyzed presented non-uniform distribution. P, S and Cl showed similar elemental distribution in all the samples analyzed. K, Ca, Fe, and Cu showed different elemental distribution for the spheroids analyzed. Zinc presented more intense distributions in the spheroid central region for all spheroids analyzed. [ABSTRACT FROM AUTHOR]

Published
2012
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