在沙特的移植患者中,CYP3A4和CYP3A5多态的作用
在PubMed上查看摘要
概括
此摘要是机器生成的。在沙特的移植患者中,CYP3A4和CYP3A5的遗传变异显著影响着塔克罗利 (Tac) 的剂量和水平. 了解这些药物遗传学对于优化Tac治疗和改善患者的结果至关重要.
科学领域
- 药物基因组学
- 移植医学
- 临床药房
背景情况
- 沙特阿拉伯对CYP3A4和CYP3A5遗传变异性的数据有限.
- 在沙特的移植患者 (SKTP) 中,需要进一步的基因洞察.
研究的目的
- 在SKTP中研究CYP3A4和CYP3A5多态性.
- 评估这些基因变异对Tac剂量要求和最低水平的影响.
主要方法
- 在251名沙特参与者 (129名SKTP,122名健康患者) 中分析了CYP3A4 (*1B, *6, *18, *22) 和CYP3A5 (*2, *3, *4) 多态性.
- 使用实时PCR和异位基因特异测序进行基因定型.
- 在SKTP中与Tac剂量和最低度 (C0) 相关的CYP3A变体.
主要成果
- 缺乏CYP3A4*1B;罕见的CYP3A4*22.
- 观察到CYP3A5*3/*3基因型 (98. 4%) 和野生型CYP3A4基因的高流行率.
- 与CYP3A5*3/*3相比,患有CYP3A5野生型等位基因 (*1/*1) 的患者需要更高的Tac剂量,并且C0水平较低.
结论
- 沙特人口表现出CYP3A5*3/*3和野生型CYP3A4基因的高频率.
- CYP3A的遗传变异影响了Tac水平和治疗点所需的剂量.
- 药物遗传学指导的Tac剂量对于优化SKTP治疗至关重要.
相关概念视频
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...
A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
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...
Renal clearance plays a pivotal role in drug elimination from the body and can be influenced by drug distribution and interactions. Understanding these factors is crucial in pharmacology as they impact the effectiveness and duration of drug therapy.
One important factor is the relationship between renal clearance and the apparent volume of distribution. Renal clearance tends to be inversely proportional to the apparent volume of distribution. Drugs with an extensive distribution volume or those...
The elimination half-life and drug clearance of drugs following nonlinear kinetics can vary with dosage. The Michaelis-Menten parameters and drug concentration influence these factors. As the dose increases, the elimination half-life tends to lengthen, resulting in a reduction in clearance and a disproportionately larger area under the curve. The total clearance can be derived from the Michaelis-Menten equation for drugs following a one-compartment model.
A study on guinea pigs examined the...
Protein-drug binding, a pivotal aspect of pharmacokinetics, is subject to considerable variability influenced by an array of patient-related factors. The intricate interplay of age, individual differences, and pathological conditions significantly impact the binding dynamics and subsequent pharmacological effects.
Age stands as a key determinant in protein-drug binding. Neonates, characterized by low albumin content, experience heightened concentrations of unbound drugs such as phenytoin and...

