在模拟肥胖和久坐不动的生活方式条件下,全身振动对骨纳米复合材料组织和预防骨密度损失的影响:实验研究

N. Kostyshyn, M. Gzhegotskyi, O. Yarova, L. P. Kostyshyn, Y. Kulyk
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摘要

本研究旨在探讨高频全身振动(WBV)对久坐生活方式和肥胖大鼠骨组织代谢和结构反应的影响。肥胖加上久坐不动的生活方式会对健康产生潜在的负面影响。然而,全身振动可以作为一种非药物校正骨矿物质密度的手段。为了表征骨纳米复合材料的组织和防止矿物质密度损失,使用了x射线衍射方法。大鼠血液中骨重塑标志物:瘦素、骨钙素、抗酒石酸酸性磷酸酶5b、碱性磷酸酶。采用高热量饮食和低运动模型,我们证明骨矿物质量从第8周开始下降。值得注意的是,晶体相(羟基磷灰石)的相对数量在整个实验过程中持续减少,直至24周(p<0.05)。这些结构变化伴随着骨重塑标志物定量指标的变化。与正常饮食的动物相比,大鼠的骨密度较低,而且还受到体重的影响。我们观察到,增加全身振动组的结晶相体积分数从84%增加到93% (p<0.05),而限制活动和高热量饮食组的矿物成分减少。因此,WBV可以改善肥胖大鼠的骨骼结构状况,防止脂肪堆积和肥胖相关的生化指标。这是一种有效的方法,可以改善骨骼的结构和功能状态,同时防止骨矿物质密度的损失。
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Effect of whole body vibration on bone nanocomposites organisation and prevention of loss of bone mineral density under conditions of modeling obesity and sedentary lifestyle: experimental study
This study aimed to investigate the influence of high-frequency whole body vibration (WBV) on metabolic and structural responses of rats' bone tissue under the sedentary lifestyle and obesity. Obesity combined with a sedentary lifestyle can present the potential negative health effects. However, whole body vibration can be used as a means of non-pharmacological correction of bone mineral density. For characterization of bone nanocomposites organisation and prevention of mineral density loss, X-ray diffraction method was used. Markers of bone remodeling in the rats' blood: leptin, osteocalcin, tartarate resistant acid phosphatase 5b, alkaline phosphatase. Using a high-calorie diet and low-mobility model, we proved that bone mineral mass had been decreasing since 8th week. It should be noted that the decrease in the relative amount of crystalline phase (hydroxyapatite) continued throughout the experiment, up to 24 weeks (p<0.05). These structural changes were accompanied by changes in quantitative indicators of the bone remodeling markers. Rats had lower bone mineral density compared to the animals that were on the normal diet and were additionaly affected by WBV. We observed the increase of the crystalline phase volume fraction from 84% to 93% (p<0.05) in group with additional whole body vibration and the decrease of the mineral component in rats with limited mobility and high-calorie diet. Therefore, WBV could improve structural conditions of bone and prevent fat accumulation and obesity-associated biochemical markers in obese rats. This can be an effective method to improve the structural and functional state of the bones while preventing the loss of bone mineral density.
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