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Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

Pharmacogenetics of Drug Transporters: P-Glycoprotein and Solute Carrier Transporters

Pharmacogenetics of Drug Transporters: P-Glycoprotein and Solute Carrier Transporters

The pharmacogenetics of drug transporters is increasingly recognized as a critical factor influencing interindividual variability in drug absorption, distribution, and elimination. These membrane-bound proteins regulate drugs' movement across cellular barriers by actively pumping them out (efflux) or facilitating their uptake (influx). Among the major transporter families, ATP-binding cassette (ABC) and solute carrier (SLC) transporters play particularly prominent roles. Genetic polymorphisms...

Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...

Pharmacogenomics: Identification of New Drug Targets

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...

Blood Studies for Cardiovascular System III: Serum Lipid Profile

Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...

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Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein

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[Association between levels of plasma lipid profile with apolipoprotein B gene polymorphism in 93 children].

N Feng¹, J Ma, L Shao

¹Institute of Child and Adolescent Health, Beijing Medical University.

Zhonghua Yu Fang Yi Xue Za Zhi [Chinese Journal of Preventive Medicine]

|May 14, 1999

Summary

Genetic variations in the apolipoprotein B (Apo B) gene are linked to altered plasma lipid profiles in children. This suggests Apo B gene polymorphism may serve as a childhood marker for abnormal lipid levels.

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Area of Science:

Genetics
Biochemistry
Pediatrics

Context:

Childhood obesity and dyslipidemia are growing public health concerns.
Genetic factors play a significant role in lipid metabolism.
The apolipoprotein B (Apo B) gene is crucial for lipoprotein assembly and clearance.

Purpose:

To investigate the association between Apo B gene polymorphism at the Xba I locus and plasma lipid profiles in children.
To determine if specific genotypes correlate with variations in total cholesterol and LDL cholesterol levels.

Summary:

A study of 93 children (8-11 years) examined the relationship between Apo B gene Xba I locus polymorphism and plasma lipid profiles.
Children with the X-X+ genotype exhibited significantly higher plasma total cholesterol and LDL cholesterol compared to those with the X-X- genotype.
The presence of the uncommon X+ allele was associated with elevated cholesterol levels, with 4 out of 6 cases exceeding the 90th percentile.

Impact:

The findings suggest a potential genetic marker for abnormal plasma lipid profiles in children.
Understanding these genetic associations can inform early identification and intervention strategies for dyslipidemia.
This research contributes to the growing body of evidence linking specific gene variations to metabolic health outcomes in pediatric populations.