Institute of Orthopaedic Research and Biomechanics, University of Ulm, 89081 Ulm, Germany.
Int J Mol Sci. 2023 Mar 24;24(7):6143. doi: 10.3390/ijms24076143.
Postmenopausal women are at an increased risk for intervertebral disc degeneration, possibly due to the decrease in oestrogen levels. Low-magnitude, high-frequency vibration (LMHFV) is applied as a therapeutic approach for postmenopausal osteoporosis; however, less is known regarding possible effects on the intervertebral disc (IVD) and whether these may be oestrogen-dependent. The present study investigated the effect of 17β-oestradiol (E2) and LMHFV in an IVD organ culture model. Bovine IVDs ( = 6 IVDs/group) were treated with either (i) E2, (ii) LMHFV or (iii) the combination of E2 + LMHFV for 2 or 14 days. Minor changes in gene expression, cellularity and matrix metabolism were observed after E2 treatment, except for a significant increase in matrix metalloproteinase (MMP)-3 and interleukin (IL)-6 production. Interestingly, LMHFV alone induced cell loss and increased IL-6 production compared to the control. The combination of E2 + LMHFV induced a protective effect against cell loss and decreased IL-6 production compared to the LMHFV group. This indicates possible benefits of oestrogen therapy for the IVDs of postmenopausal women undergoing LMHFV exercises.
绝经后妇女椎间盘退变的风险增加,这可能是由于雌激素水平下降所致。低幅度、高频率振动(LMHFV)被用作治疗绝经后骨质疏松症的方法;然而,对于其对椎间盘(IVD)的可能影响以及这些影响是否可能依赖于雌激素知之甚少。本研究在椎间盘器官培养模型中研究了 17β-雌二醇(E2)和 LMHFV 的作用。牛椎间盘(= 6 个椎间盘/组)用以下方法处理:(i)E2,(ii)LMHFV 或(iii)E2 + LMHFV 联合处理 2 或 14 天。E2 处理后观察到基因表达、细胞活力和基质代谢的微小变化,但基质金属蛋白酶(MMP)-3 和白细胞介素(IL)-6 的产生显著增加。有趣的是,与对照组相比,单独的 LMHFV 会引起细胞丢失和 IL-6 产生增加。与 LMHFV 组相比,E2 + LMHFV 的联合使用可防止细胞丢失并减少 IL-6 的产生。这表明雌激素治疗对接受 LMHFV 运动的绝经后妇女的椎间盘可能有益。