停止使用登苏马布:逐渐减少剂量可以保持腰椎骨矿物质密度增加的一半
Michel Laroche1, Guillaume Couture1, Yannick Degboé1
1Centre de Rhumatologie CHU Purpan - Université Toulouse III Toulouse cedex France.
JBMR plus
|July 17, 2023
概括
在骨质疏松症中逐渐减少德诺苏马布的剂量,可以部分地保持脊柱的骨矿物质密度,但不能防止部的骨损失. 这种方法可能无法完全减轻与停止德诺苏马布治疗相关的风险.
科学领域:
- 骨代谢和内分泌学 骨代谢和内分泌学
- 药理学和治疗学 药理学和治疗学
背景情况:
- 停止治疗骨质疏松症的德诺苏马布 (Dmab) 会导致骨矿物密度 (BMD) 快速下降,并增加脊椎骨折的风险.
- 随后的双酸盐 (Bp) 治疗不能完全抵消这种骨损失.
- 在停止使用德诺苏马布后,研究用于管理骨损伤的替代策略至关重要.
研究的目的:
- 评估逐渐降低德诺苏马布剂量的有效性,以预防骨质损失.
- 为了评估 BMD 和骨周转指标在降低剂量 denosumab 协议后发生的变化.
主要方法:
- 一项前性试点研究,涉及13名患有绝经后骨质疏松症的妇女,这些妇女先前接受了denosumab治疗.
- 剂量减少方案:在最后一次60毫克剂量后,在6个月后减少30毫克的登苏马布,并在12个月后减少15毫克的登苏马布.
- 在基线,治疗结束以及减少后6个月和12个月,测量了BMD和血清C终端端的I型原蛋白 (CTX) 端.
主要成果:
- 在最后一个15毫克的德诺苏马布剂量后的一年内,在腰椎的骨质量增加的39%仍然存在.
- 在部的骨损失相当于在剂量减少协议结束时的初始收益.
- 在最后15毫克剂量后的6个月和12个月,平均CTX水平显著增加,这表明骨再吸收增加.
结论:
- 逐渐减少德诺苏马布的剂量 (30毫克,然后15毫克) 并不能防止部骨损失.
- 这种策略只能部分地维持在腰椎实现的初始BMD增长.
- 需要进行进一步的研究,以确定在停止使用德诺苏马布后治疗骨质疏松症的最佳策略.
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