Impact of infrasound exposure and glucose intolerance on bone composition in Wistar rats

Introduction: The concentrations of some chemical elements may differ between healthy and diseased tissues. The knowledge of these differences is pivotal to understand the metabolic processes involved in both physiological and diseased states. The aim of this study was to evaluate the elemental composition of calcium (Ca) and phosphorus (P) in the bone of rats subjected to glucose intolerance and/or infrasound. Materials: and Methods: X-ray fluorescence spectroscopy was applied in the concentration determination of Ca and P in samples of Wistar rat tibiae. Tibiae from glucose intolerant, non-intolerant, exposed and non-exposed to infrasound rats were analysed. Results: : There was a significant decrease in bone P concentration in glucose intolerant rats compared to non-intolerant animals. Similarly, the Ca/P ratio was higher in glucose intolerant animals. There were no significant differences for bone Ca concentration in both studied groups, nor between animals exposed and non-exposed to infrasound in either studied element. Discussion: and Conclusions: Glucose intolerant rats had lower bone P concentration and unaltered bone Ca concentration compared to non-glucose intolerant rats. Infrasound exposure was not associated to changes of bone Ca or P. The reduction of bone P concentration may be associated with the augmented risk of bone fractures in diabetes.