在老化过程中,饮食中酸盐摄入对骨和矿物代谢的持续和可逆影响
Jamie L Arnst1,2, Uma D Alappan2, Manjula Viggeswarapu1
1The Atlanta Department of Veterans Affairs Medical Center, Decatur, GA, 30033, USA.
GeroScience
|June 2, 2025
概括
低酸盐饮食显著增加了所有年龄的雄性小鼠的骨量. 相反,高酸盐摄入导致骨质流失和脏化,突出显示饮食.
科学领域:
- 骨代谢和营养的骨代谢和营养
- 老年学是一门学科.
- 饮食科学 饮食科学
背景情况:
- 老龄化过程中的骨质损失是一个重大的健康问题,导致骨折和生活质量下降.
- 目前的骨质疏松症治疗侧重于诊断后的干预,对营养预防和可修改的风险因素的研究有限.
- 食无机酸盐 (Pi) 在西方饮食中消耗过多,可能会影响骨代谢,但其在不同生命阶段和性别的长期影响还未得到充分研究.
研究的目的:
- 调查饮食中的无机酸盐 (Pi) 水平对年轻和老年雄性小鼠骨健康的影响.
- 为了确定饮食Pi诱导的骨质变化是否可逆.
- 确定潜在的营养策略,以防止骨质流失和改善骨质.
主要方法:
- 年轻的和老的雄性小鼠被食低,正常或高无机酸盐 (Pi) 含量饮食10周,与恒定的水平.
- 测量了骨指数和Pi-响应性血清因子.
- 通过将小鼠从低Pi或高Pi饮食转换为正常Pi饮食,在随后的10周内评估骨变化的可逆性.
主要成果:
- 低Pi饮食显著增加了年轻和老的雄性小鼠的脊椎骨和皮层骨体积.
- 高Pi的饮食导致年轻小鼠的椎骨损失,这是不可逆转的.
- 高Pi饮食加速皮层骨质损失,并导致老老小鼠的结.
结论:
- 饮食选择,特别是关于无机酸盐 (Pi) 摄入量,在生命早期做出的选择可能会对骨健康产生长期影响.
- 低Pi添加剂饮食是一种新的非药物营养策略,可以增加骨质量并防止骨质流失,特别是在老年人中.
- 减少饮食中酸盐摄入量可能是预防与年龄相关的骨质恶化和相关健康风险的关键预防措施.
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