Affiliations: Laboratory of Physiology and Pharmacodynamics, Institute of Research and Development, Universidade do Vale do Paraíba, São José dos Campos, SP, Brazil | School of Physical Education and Sports, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil | Laboratory of Biomedical Vibrational Spectroscopy, Institute of Research and Development, Universidade do Vale do Paraíba, São José dos Campos, SP, Brazil | Departamento de Engenharia de Biossistemas, Universidade Federal de São João Del Rei, São João Del Rei, Minas Gerais, Brazil
Note: [] Corresponding author: Humberto Miranda, Institute of Research and Development (IP&D), Universidade do Vale do Paraíba (UNIVAP), Av. Shishima Hifumi, Urbanova, 2911, São José dos Campos, SP 12244-000, Brazil. Tel.: +55 12 3947 1124; E-mail: humbertomiranda01@gmail.com.
Abstract: In this study, Raman spectroscopy was employed in order to provide information about the effects of different doses of creatine on bone tissue composition of phosphate apatite (960 cm−1), carbonate apatite (1170 cm−1) representing the mineral content and collagen matrix (amide I, 1665 cm−1). The animals (27 Balb-C male) were divided into three groups (n=9 per group): control (CON), supplemented with 0.5 g/kg (Cre-0.5) and with 2.0 g/kg (Cre-2.0) creatine. The experiment was carried out for thirty days. After this time, the right femur of each animal was harvested. The specimens were assessment by FT-Raman spectroscopy and in a total of 81 spectra were acquired in the medial diaphysis of the femur. The Raman data strongly suggest that only the creatine supplementation of 0.5 g/kg effective to the bone constitution. Furthermore, the present results demonstrate that creatine ingestion provokes decrease in the relative presence of carbonate in the chemical constitution of bones. The decrease in the carbonate content can be associated to a significantly bone resistance altered to several mammalians. The analysis evidenced that the mineral concentrations in the Raman spectroscopy could be a feasible method for non-invasive or minimally invasive assessment of bone tissue composition. Probably this high sensitivity can be employed to determine spectral profiles, such as wavelength of maximum absorption and maximum intensity of absorption of each wavelength, of several bone diseases.
Keywords: FT-Raman spectroscopy, femur, bone quality, creatine, nutrition supplement
DOI: 10.3233/SPE-2011-0508
Journal: Spectroscopy, vol. 25, no. 5, pp. 225-233, 2011
