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利塞膦酸钠治疗髋部骨折患者股骨头骨细胞中破骨细胞和成骨素的表达:一项回顾性对比研究。

Osteoclast and Sclerostin Expression in Osteocytes in the Femoral Head with Risedronate Therapy in Patients with Hip Fractures: A Retrospective Comparative Study.

机构信息

Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon 34943, Korea.

出版信息

Medicina (Kaunas). 2022 Oct 31;58(11):1566. doi: 10.3390/medicina58111566.

Abstract

Background and Objectives: The majority of research on the effects of osteoporosis drugs has measured the bone mineral density (BMD) of the spine and femur through dual-energy X-ray absorptiometry (DEXA) and compared and analyzed the effects of the drugs through changes in the BMD values. This study aims to compare osteoclast and sclerostin expression in osteocytes after risedronate therapy by obtaining femoral heads from patients with hip fractures. Materials and Methods: We obtained the femoral heads of 10 female patients (age: ≥65 years) who received risedronate therapy for at least 1 year through hip arthroplasty during 2019−2021 (risedronate group). Meanwhile, 10 patients who had never received osteoporosis treatment were selected as controls using propensity scores with age, body mass index, and bone density as covariates (control group). While the osteoclast count was evaluated using tartrate-resistant acid phosphatase (TRAP) staining, the sclerostin expression in osteocytes was assessed using immunohistochemistry. Moreover, Western blotting and polymerase chain reaction (PCR) were performed for receptor activation of nuclear factor kappa-Β ligand (RANKL), RANK, osteoprotegerin (OPG), sclerostin, and bone morphogenetic protein-2 (BMP2). Results: TRAP staining revealed significantly more TRAP-positive cells in the control group (131.75 ± 27.16/mm2) than in the risedronate group (28.00 ± 8.12/mm2). Moreover, sclerostin-positive osteocytes were expressed more in the control group (364.12 ± 28.12/mm2) than in the risedronate group (106.93 ± 12.85/mm2). Western blotting revealed that the expressions of RANKL, RANK, sclerostin, and BMP2 were higher in the control group than in the risedronate group (p < 0.05). Furthermore, RANK, sclerostin, and OPG protein levels were higher in the control group than in the risedronate group. Conclusions: In this study, the risedronate group demonstrated lower osteoclast activity and sclerostin expression in osteocytes in the femoral head than the control group.

摘要

背景与目的

大多数关于骨质疏松症药物疗效的研究都是通过双能 X 射线吸收法(DEXA)测量脊柱和股骨的骨密度(BMD),并通过 BMD 值的变化比较和分析药物的疗效。本研究旨在通过获取髋部骨折患者的股骨头,比较利塞膦酸钠治疗后破骨细胞和成骨细胞中骨硬化蛋白的表达。材料与方法:我们收集了 2019-2021 年通过髋关节置换术接受利塞膦酸钠治疗至少 1 年的 10 名女性患者(年龄:≥65 岁)的股骨头(利塞膦酸钠组),同时选择了 10 名从未接受过骨质疏松症治疗的患者作为对照(对照组),采用年龄、体重指数和骨密度为协变量的倾向评分匹配。使用抗酒石酸酸性磷酸酶(TRAP)染色评估破骨细胞计数,免疫组化评估成骨细胞中骨硬化蛋白的表达。此外,还进行了核因子κB 配体(RANKL)、RANK、骨保护素(OPG)、骨硬化蛋白和骨形态发生蛋白-2(BMP2)的受体激活的 Western blot 和聚合酶链反应(PCR)。结果:TRAP 染色显示对照组(131.75±27.16/mm2)的 TRAP 阳性细胞明显多于利塞膦酸钠组(28.00±8.12/mm2)。此外,对照组的骨硬化蛋白阳性成骨细胞表达也多于利塞膦酸钠组(364.12±28.12/mm2)。Western blot 显示,对照组中 RANKL、RANK、骨硬化蛋白和 BMP2 的表达均高于利塞膦酸钠组(p<0.05)。此外,对照组的 RANK、骨硬化蛋白和 OPG 蛋白水平也高于利塞膦酸钠组。结论:在本研究中,利塞膦酸钠组的股骨头破骨细胞活性和成骨细胞骨硬化蛋白表达低于对照组。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/07cf/9695260/abc87b751446/medicina-58-01566-g001.jpg

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