脑脊液中葡萄糖和蛋白质的日间时间和年龄相关模式
Joshua P Koleske1, Shelei Pan1, Thanda Meehan1
1Department of Neurosurgery, Washington University School of Medicine, Washington University in St. Louis, St. Louis, MO, 63110, USA.
Fluids and barriers of the CNS
|October 17, 2025
概括
大脑脊髓液 (CSF) 的葡萄糖水平表现出白天波动,夜间和清晨达到峰值,与CSF蛋白质不同,CSF蛋白质主要与年龄有关. 这些发现影响了CSF测试的临床解释.
科学领域:
- 神经学 神经学
- 生物化学 生物化学
- 时间生物学 时间生物学
背景情况:
- 脑脊液 (CSF) 组成的循环变化已知用于电解质,激素和神经递质.
- 通常测量到的CSF成分如蛋白质和葡萄糖的日间变化仍未得到充分研究.
- 这项研究调查了大量患者队列中CSF蛋白质和葡萄糖水平的日间模式.
研究的目的:
- 识别和比较CSF蛋白质和葡萄糖水平的日间差异.
- 分析不同年龄组中CSF/血糖比的日间波动.
- 评估CSF蛋白度,年龄和一天中的时间之间的关系.
主要方法:
- 分析了2018年6月至2023年5月期间,来自15272名患者的26397次脑脊髓炎采集.
- 脑脊髓炎的结果根据一天的时间和患者的年龄分为1小时和4小时的间隔.
- 使用后期Tukey的单向ANOVA用于分析平均差异,不包括患有CSF感染或出血的患者.
主要成果:
- 脑液/血糖比表现出显著的日间波动,较高的平均比率观察到00:00-08:00和16:00-00:00比08:00-16:00.
- 在大多数年龄组中,CSF葡萄糖的日间模式是一致的,儿童的相位转移显著.
- 对于CSF蛋白质,没有明确的日间时间模式;然而,CSF蛋白质的高水平与年龄的增加之间确立了强烈的联系 (R2=0.2182).
结论:
- 脑流中的葡萄糖水平表现出白天波动,可能是由昼夜节律驱动的,夜间和清晨的水平更高.
- 脑流中的蛋白质度与患者的年龄有显著的相关性,但与一天的时间无关.
- 这些发现对于准确的临床解释CSF分析至关重要,并强调需要进一步研究CSF在健康和疾病中的作用.
相关概念视频
Pharmacodynamics in Geriatric Patients: Effects of Age
185
Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
185
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution
228
Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
228


