Related Experiment Video
Updated: Aug 12, 2026

Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles
Published on: November 10, 2017
Effect of oral contraceptives on serum apoprotein levels
Abstract:
The effect of oral contraceptives on serum lipoprotein concentrations, as assessed by their cholesterol content, is determined by the doses of estrogen and progestogen and the type of progestogen they contain. Assay of the apoprotein content, instead of cholesterol content, measures a different aspect of lipoprotein metabolism. Changes in serum concentrations of apoproteins A and B in women using oral contraceptives are similar to those obtained by measuring low density lipoprotein (LDL) and high density lipoprotein (HDL) cholesterol.
Related Concept Videos
Drug Distribution: Plasma Protein Binding
Factors Affecting Protein-Drug Binding: Drug-Related Factors
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In contrast,...
Factors Affecting Protein-Drug Binding: Protein-Related Factors
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be bound by...
Factors Affecting Protein-Drug Binding: Drug Interactions
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Factors Affecting Protein-Drug Binding: Patient-Related Factors
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...
Pharmacokinetics: Drug–Drug Interactions

