Volume 64, Issue 3 pp. 344-352

Effect of low-protein diet on anthracycline pharmacokinetics and cardiotoxicity

Ebtehal El-Demerdash

Corresponding Author

Ebtehal El-Demerdash

Pharmacology & Toxicology Department, Faculty of Pharmacy, Ain Shams University

Ebtehal El-Demerdash, Department of Pharmacology & Toxicology, Faculty of Pharmacy, Ain Shams University, Abasia, Cairo, Egypt. E-mail: [email protected]Search for more papers by this author
Azza A. Ali

Azza A. Ali

Pharmacology & Toxicology Department, Faculty of Pharmacy, Al-Azhar University

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Dalia E.M. El-Taher

Dalia E.M. El-Taher

Hospitals of Ain Shams University, Cairo, Egypt

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Farid M.A. Hamada

Farid M.A. Hamada

Pharmacology & Toxicology Department, Faculty of Pharmacy, Al-Azhar University

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First published: 07 December 2011
Citations: 13

Abstract

Objectives Anthracyclines are broad spectrum anticancer drugs with dose-dependent cardiotoxicity. Protein malnutrition commonly occurs in cancer patients and is considered a risk factor for development of cardiotoxicity. This study was designed to assess the modulatory effect of protein malnutrition on the pharmacokinetics and drug disposition properties of a single dose of doxorubicin and epirubicin and how these possible changes will affect the degree of cardiotoxicity of these drugs.

Methods A single interperitoneal dose of 15 mg/kg of either doxorubicin or epirubicin was injected into rats fed with either normal protein diet or low-protein diet. The plasma concentration–time profiles of doxorubicin and epirubicin and their concentrations in different tissues were determined. Serum creatine kinase level was determined at different time intervals and histopathological examination of heart tissue was carried out.

Key findings Protein malnutrition significantly altered the pharmacokinetics of doxorubicin and epirubicin, with a significant decrease in their elimination, and prolonged the exposure of the heart to these drugs. Histopathological examination and serum creatine kinase measurements supported the role of protein malnutrition in enhancement of anthracycline cardiotoxicity.

Conclusions If similar alteration in anthracyclines' pharmacokinetics occurs in malnourished cancer patients, protein malnutrition will be a risk factor for development of anthracycline cardiotoxicity and dose adjustment will be required in nutritionally deprived patients.

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