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首页> 外文期刊>International Journal of Clinical and Experimental Pathology >Establishing a rapid animal model of osteoporosis with ovariectomy plus low calcium diet in rats
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Establishing a rapid animal model of osteoporosis with ovariectomy plus low calcium diet in rats

机译:卵巢切除加低钙饮食在大鼠骨质疏松症快速动物模型的建立

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The objective of this study was to rapidly develop osteoporotic model animals by combining ovariectomy with a low calcium diet in rats. Thirty, eight-week-old, female, Sprague-Dawley rats were either sham-operated (Sham) or ovariectomized (Ovx) and divided into three groups: Sham, Ovx, and Ovx + low calcium diet. Rats in the Sham and Ovx groups were fed a standard diet containing 1.1% w/w calcium while rats in the Ovx + low calcium diet group were fed a diet containing 0.1% w/w calcium. Serum osteocalcin and bone mineral density (BMD) of the lumbar vertebrae were measured 4 and 8 weeks after surgery. The rats were euthanized 12 weeks after surgery, and the BMD of the right femur and histomorphometry of the femoral neck were assessed at that time. The Ovx + low-calcium diet group had a significantly lower mean BMD of the lumbar vertebra and higher mean serum osteocalcin concentration than the Sham and Ovx groups. Twelve weeks after surgery, rats in the Ovx + low calcium diet group had a significantly lower BMD, smaller Tb.Th and Tb.N, and larger Tb.Sp of the right femoral neck than did rats in the Sham and Ovx groups. These data indicate that a low calcium diet can significantly accelerate bone loss in ovariectomized rats. Combining ovariectomy and a low calcium diet can save considerable time in the creation of osteoporotic model animals.
机译:这项研究的目的是通过将大鼠卵巢切除术与低钙饮食相结合来快速发展骨质疏松模型动物。将30只八周大的雌性Sprague-Dawley大鼠进行假手术(Sham)或去卵巢(Ovx),分为三组:Sham,Ovx和Ovx +低钙饮食。 Sham和Ovx组的大鼠接受含1.1%w / w钙的标准饮食,而Ovx +低钙饮食组的大鼠接受含0.1%w / w钙的饮食。术后4周和8周测量血清腰椎骨钙素和骨矿物质密度(BMD)。手术后12周对大鼠进行安乐死,并在那时评估右股骨的BMD和股骨颈的组织形态。与Sham和Ovx组相比,Ovx +低钙饮食组的腰椎平均BMD显着降低,而血清骨钙素平均浓度更高。手术十二周后,Ovx +低钙饮食组的大鼠的股骨密度明显降低,右股骨颈的Tb.Th和Tb.N较小,Tb.Sp较假手术和Ovx组的大鼠明显降低。这些数据表明,低钙饮食可以显着加速卵巢切除大鼠的骨质流失。卵巢切除术和低钙饮食相结合可以节省大量时间来制造骨质疏松模型动物。

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