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Histomorphometric Analysis of the Spine and Femur in Ovariectomized Rats Using Micro-Computed Tomographic Scan
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shin, Yong-Hwan Cho, Dae Chul Yu, Song-Hee Kim, Kyoung Tae Cho, H. Y. Sung, Joo-Kyung |
| Copyright Year | 2012 |
| Abstract | OBJECTIVE The purpose of this study was to evaluate the different patterns of bone loss between the lumbar spine and the femur after ovariectomy in rats. METHODS Twenty-four female Sprague-Dawley rats underwent a sham operation (the sham group) or bilateral ovariectomy (the ovariectomized group). Four and eight weeks after operation, six rats from each of the two groups were euthanized. Serum biochemical markers of bone turnover including osteocalcin and alkaline phosphatase (ALP), which are sensitive biochemical markers of bone formation, and the telopeptide fragment of type I collagen C-terminus (CTX), which is a sensitive biochemical marker of bone resorption, were analyzed. Bone histomorphometric parameters of the 4th lumbar vertebrae and femur were determined by micro-computed tomography. RESULTS Ovariectomized rats were found to have higher osteocalcin, ALP and CTX levels than sham controls. Additionally, 8 weeks after ovariectomy in the OVX group, serum levels of osteocalcin, ALP and CTX were significantly higher than those of 4 weeks after ovariectomy. Bone loss after ovariectomy was more extensive in the 4th lumbar spine compared to the femur. Bone loss in the 4th lumbar spine was mainly caused by trabecular thinning, but in the femur, it was mainly caused by trabecular elimination. CONCLUSION The present study demonstrates different patterns of bone loss between the 4th lumbar spine and the femur in ovariectomized rats. Therefore, when considering animal models of osteoporosis, it is important that bone sites should be taken into account. |
| Starting Page | 1 |
| Ending Page | 6 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 22993670 |
| Volume Number | 52 |
| Journal | Journal of Korean Neurosurgical Society |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Alkaline Phosphatase Animal Model BGLAP gene Bilateral oophorectomy Bone Cysts Bone Resorption Bone Tissue Bone remodeling Bone structure of lumbar vertebra Bone structure of spine Cyclophosphamide Excretory function Femur Lumbar spine structure Osteocalcin Osteogenesis Osteopenia Osteoporosis Ovariectomy Protein Tyrosine Phosphatase, Non-Receptor Type 6 Rats, Sprague-Dawley X-Ray Computed Tomography |
| Content Type | Text |
| Resource Type | Article |
