Calcium,phosphorus, calcium-phosphorus ratio in rib bone of healthy humans |
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Authors: | Tzaphlidou Margaret Zaichick Vladimir |
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Institution: | (1) Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece;(2) Radiological Research Centre, Obninsk, 249020 Kaluga Region, Russia |
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Abstract: | Calcium and phosphorus concentrations as well as the Ca/P ratio were estimated in intact rib bone samples from healthy humans,
37 women and 45 men, aged 15–55 yr. For Ca and P concentration measurements, instrumental neutron activation analysis was
used. The mean values (mean±SD) for the investigated parameters were 19.3±4.5% of dry bone weight, 8.42±2.14% of dry bone
weight, and a ratio of 2.33±0.34, respectively. Statistically significant differences for the above parameters were not observed
to be related either to age or sex. The mean values for Ca, P, and the Ca/P ratio were within a very wide range of published
data and close to their medians. The individual variation for the Ca/P ratio in rib bone from healthy humans was lower than
those for Ca and P taken separately. An indication is that the specificity of the Ca/P ratio improves upon that for Ca and
P concentrations and may be more reliable in the diagnosis of bone disorders. |
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Keywords: | Calcium phosphorus Ca/P ratio human rib bone neutron activation analysis |
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