在中国老年患者中与衰老相关的CYP3A功能变化:基于模型的阿姆洛迪平评估的新发现
Jie En Valerie Sia1,2,3, Xuan Lai2, Wen Yao Mak1
1Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, China.
Clinical pharmacology and therapeutics
|August 21, 2024
概括
虚弱,不仅仅是年龄,在老年人中显著影响药物代谢. 虚弱的个体由于CYP3A酶活性降低而暴露于药物更高,这表明虚弱是药物剂量的更好指标.
科学领域:
- 药理学 药理学是指药理学的学科.
- 老年病的医生 老年病的医生
- 药物新陈代谢 药物新陈代谢
背景情况:
- 衰老会改变肝酶活性,影响老年人药物疗效和安全性.
- 细胞染色体P450 3A (CYP3A) 的活性对药物代谢至关重要,并且已知随着年龄的增长而变化.
- 了解CYP3A功能的与年龄相关的变化对于优化老年人药物治疗至关重要.
研究的目的:
- 调查和量化影响中国老年人群中CYP3A功能与衰老相关的变化的因素.
- 为了评估虚弱和年龄对CYP3A介导药物代谢的影响,使用阿姆洛迪平作为探针基质.
- 为了确定虚弱或时间性年龄是否是老年人药物暴露的更重要的决定因素.
主要方法:
- 利用外源的探针基质方法与阿姆洛迪平一起,由CYP3A广泛代谢.
- 采用基于生理学的药理动力学 (PPK) 建模方法,结合人口药理动力学 (PPK) 分析.
- 在正在进行的非干预性临床研究中,从69名患者收集了阿姆洛迪平度数据.
主要成果:
- 脆弱的表型,而不是时间上的年龄,被确定为影响CYP3A功能的重要因素.
- 虚弱患者与非虚弱患者相比,血amlodipine暴露率增加了37%.
- 脆弱个体中这种增加的暴露与CYP3A相对丰度降低63.2%有关.
结论:
- 虚弱是一个比时间表年龄更相关的临床指标,用于评估老年人药物代谢和指导剂量选择.
- 专注于生物年龄,如脆弱性所反映的,可能会导致更个性化和更安全的药物治疗老年人.
- 这些发现凸显了需要将研究和临床重点从年代学转移到老年人药物治疗中的生物年龄.
相关概念视频
01:15Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
49
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
49
01:17Factors Affecting Renal Clearance: Renal Impairment
63
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
63