在接受血液透析的患者中,血代谢物和身体功能
Ranjani N Moorthi1, Sharon M Moe1, Thomas O'Connell1
1Indiana University School of Medicine, Indianapolis, IN, USA.
Scientific reports
|April 10, 2024
概括
通过代谢学识别的代谢物变化可以预测透析患者的身体功能受损,包括步行速度和握力. 这些发现为有针对性的干预提供了新的途径,以改善患者的治疗结果.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 代谢学 代谢学 代谢学
- 老年学是一门学科.
背景情况:
- 身体功能受损是发生不良结果的重要预测因素,包括在透析患者中跌倒,骨折和死亡率.
- 在这个人群中,代谢变化可能是身体功能缺陷的基础.
研究的目的:
- 在开始透析的患者中,确定与步行速度和握力受损相关的特定代谢物变化.
- 开发和验证复合代谢物评分,以评估身体功能.
主要方法:
- 使用液态染色体质谱的向血代谢进行了对108名参与者进行透析.
- 通过4米步行测试和手握强度来评估身体功能.
- 综合评分是使用威尔科克森测试 (p < 0.05) 和效果大小 (> 0.40) 识别的代谢物获得的,并通过接受器运行特征分析进行验证.
主要成果:
- 综合评分是使用22个代谢物来测定握力和12个代谢物来测定步行速度来构建的.
- 代谢物复合评分曲线下的面积显示出高精度:握力为0.911,步行速度为0.88.
- 代谢物复合评分在区分身体功能水平方面超过了传统的临床参数.
结论:
- 代谢分析可以确定与透析患者身体功能受损相关的关键代谢物.
- 复合代谢物评分显示,作为评估身体功能和指导干预措施的敏感生物标志物,有希望.
- 为了证实这些发现,需要在独立队列中进一步验证.
相关概念视频
Factors Affecting Renal Clearance: Renal Impairment
91
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...
91
Dialysis
307
Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
307
Factors Affecting Renal Clearance: Drug's Physicochemical Properties and Plasma Levels
213
Renal clearance of a drug is influenced by various factors, including its physicochemical properties and plasma levels. These factors play a significant role in determining how efficiently the kidneys eliminate a drug.
One important factor is the drug's molecular size. The kidneys readily excrete smaller molecules below 300 Daltons (Da). On the other hand, molecules weighing between 300 and 500 Da are excreted through both urine and bile. Larger molecules above 500 Da tend to be excreted...
One important factor is the drug's molecular size. The kidneys readily excrete smaller molecules below 300 Daltons (Da). On the other hand, molecules weighing between 300 and 500 Da are excreted through both urine and bile. Larger molecules above 500 Da tend to be excreted...
213
Drug Distribution: Plasma Protein Binding
5.5K
Drugs predominantly attach to plasma proteins, with only a small percentage remaining unbound. The unbound portion can be calculated as one minus the bound fraction. Acidic drugs form large, inactive complexes by reversibly binding to plasma albumin, which prevents them from diffusing across biological barriers. These drug-protein complexes act as reservoirs for the drugs. As the concentration of unbound drugs decreases, these complexes quickly dissociate to release the free drug, maintaining...
5.5K
Renal Failure: Dose Adjustments
88
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
88
Renal Drug Excretion: Tubular Reabsorption
170
Tubular reabsorption, a process occurring post-glomerular filtration of drugs in the renal tubule, is a critical determinant of drug half-life. During the process of renal excretion, as the glomerular filtrate progresses to the distal convoluted tubule (DCT), drugs that are highly permeable, lipophilic, and nonionized undergo passive reabsorption from the tubular fluid into the surrounding peritubular capillaries. This reabsorption process restricts their elimination through the kidneys. This...
170


