在估计功能时,放射性生物学年龄和时间学年龄之间的比较
Radin Alikhani1, Steven R Horbal2, Manjunath P Pai3
1Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, 428 Church St, Ann Arbor, MI, 48108, USA.
Scientific reports
|April 18, 2025
概括
新的放射性生物年龄指数,来源于身体组成,略有改善的功能估计与时间学年龄相比. 这种方法有助于个性化药物治疗,提供更精确的与衰老相关的功能评估.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 药理动力学 药理动力学
- 老年学是一门学科.
背景情况:
- 准确的功能估计对于患者护理至关重要.
- 传统的标志物,如时间表年龄和体型有其局限性.
- 生物年龄的新兴概念和新的体型描述符需要进行调查.
研究的目的:
- 利用放射性生物标志物开发和评估新的生物年龄指数.
- 评估这些放射性生物年龄指数是否能改善功能估计.
- 在药物动力学建模中,将生物年龄指数与时间年龄的性能进行比较.
主要方法:
- 对接受aminoglycosides的住院患者的回顾性分析.
- 利用计算机断层扫描 (CT) 图像进行放射性生物标志物提取.
- 构建了一个人群的药理动力学模型,使用氨基糖化物清除作为功能替代品.
主要成果:
- 一个包含生物指数,血清肌素和药物类型的1区间清除模型提供了最合适的结果.
- 最佳放射性生物年龄模型包括背部肌肉群面积,骨矿物质密度,内脏脂肪面积和皮下脂肪密度.
- 放射性生物年龄模型在估计氨基糖化物清除量方面比时间年龄模型略有改善.
结论:
- 放射性生物标志物可以用来创建生物年龄指数,反映与年龄相关的身体组成变化.
- 生物年龄指数为在老年人群中更精确地估计功能提供了潜在的可能性.
- 这项概念验证研究支持在个性化药物治疗中使用放射学.
相关概念视频
01:17Factors Affecting Renal Clearance: Renal Impairment
30
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...
30
01:45Kidney Structure
66.8K
The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
66.8K
01:07Determination of Renal Drug Clearance: Graphical and Midpoint Methods
56
Renal clearance, a crucial parameter in pharmacokinetics, can be determined using two different methods: the graphical method and the midpoint method. These methods provide insights into the rate of drug excretion by the kidneys and aid in assessing renal function.
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
56
01:23Renal Clearance
380
The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
380