Timing of treatment with ICRF-187 and its effect on chronic doxorubicin cardiotoxicity

Studies were conducted to evaluate whether the timing of administration of ICRF-187 [(+)-1,2-bis(3,5 dioxopiperazinyl-1-yl)propane] would influence the degree of cardioprotection provided by this agent against the development of doxorubicin-induced chronic cardiomyopathy. Beagle dogs (8.5-14 kg) rec...

Full description

Saved in:
Bibliographic Details
Published in:Cancer chemotherapy and pharmacology 1993, Vol.32 (6), p.445-449
Main Authors: HERMAN, E. H, FERRANS, V. J
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Body Weight - drug effects
Cardiomyopathies - chemically induced
Cardiomyopathies - prevention & control
Dogs
Doxorubicin - antagonists & inhibitors
Doxorubicin - toxicity
Drug toxicity and drugs side effects treatment
Female
Male
Medical sciences
Pharmacology. Drug treatments
Razoxane - pharmacology
Time Factors
Toxicity: cardiovascular system
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Studies were conducted to evaluate whether the timing of administration of ICRF-187 [(+)-1,2-bis(3,5 dioxopiperazinyl-1-yl)propane] would influence the degree of cardioprotection provided by this agent against the development of doxorubicin-induced chronic cardiomyopathy. Beagle dogs (8.5-14 kg) received either doxorubicin alone (1.75 mg/kg, i.v., n = 8), doxorubicin (1.75 mg/kg) simultaneously with ICRF-187 (35 mg/kg, i.v., n = 8), or doxorubicin (1.75 mg/kg) followed 2 h later by ICRF-187 (35 mg/kg, n = 8). Control animals received ICRF-187 (35 mg/kg, n = 4) or saline (n = 4). All animals received a course of seven treatments, each given 3 weeks apart, and were killed 3 weeks after the last treatment. Semiquantitative grading of histologic sections of myocardium showed that as compared with animals treated with doxorubicin alone, the incidence and the severity of the doxorubicin-induced myocardial lesions were reduced in the two groups of animals given doxorubicin plus ICRF-187. However, protection was significantly better in dogs receiving ICRF-187 and doxorubicin simultaneously than in those given ICRF-187 2 h after doxorubicin. These observations were interpreted as indicating that the timing of administration of ICRF-187 with respect to that of doxorubicin is an important factor in determining the degree of cardioprotection and that there is a "time window" in which ICRF-187 exerts optimal effects.
ISSN:0344-5704
1432-0843
DOI:10.1007/BF00685888