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[Aminoglutethimide-induced dyslipidemia. Experimental study].

M Nguyen, J Bonneterre, J Vanlerenberghe

Bulletin Du Cancer

|January 1, 1985

Summary

Aminoglutethimide (AG) disrupts lipid metabolism, increasing liver lipids and altering bile composition in rats. This suggests potential impacts on steroid synthesis and cytochrome P450 pathways.

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Area of Science:

Biochemistry
Pharmacology
Toxicology

Background:

Aminoglutethimide (AG) is a steroid synthesis inhibitor used in advanced breast cancer treatment.
Observed abnormalities in lipid metabolism in patients prompted this investigation.
Understanding AG's effects on lipid metabolism is crucial for patient management.

Purpose of the Study:

To investigate the pathogenetic hypothesis behind lipid metabolism abnormalities induced by Aminoglutethimide (AG).
To determine the effects of AG, Hydrocortisone (HC), and their combination on lipid profiles and bile composition in rats.

Main Methods:

Experimental study involving four groups of rats: control, AG-treated, HC-treated, and combined AG + HC treated.
Analysis of liver triglyceride, cholesterol, and phospholipid content.
Measurement of plasma cholesterol levels.
Assessment of bile flow rate and biliary salt concentrations.

Main Results:

Rats treated with AG (alone or with HC) exhibited significantly higher liver triglyceride, cholesterol, and phospholipid levels compared to controls.
Combined AG + HC treatment resulted in elevated plasma cholesterol levels.
Increased bile flow was observed in rats receiving AG and AG + HC.
Biliary salt concentrations were lower in rats treated with AG and AG + HC.

Conclusions:

Aminoglutethimide (AG) significantly alters lipid metabolism, leading to increased hepatic lipid accumulation.
The observed changes in bile flow and composition may be linked to enzymatic induction or inhibition of cytochrome P450 pathways.
These findings provide insights into the potential mechanisms underlying AG-induced metabolic disturbances.

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