Linked Life Data

11800590

Source:http://linkedlifedata.com/resource/pubmed/id/11800590

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-1-21
pubmed:abstractText
Catalase is an important antioxidant enzyme, which has been shown to provide cardiac protection from acute toxicity induced by doxorubicin, a most effective anticancer agent. Because cumulative dose-dependent chronic cardiomyopathy due to a long-term administration of doxorubicin is a significant clinical problem, the present study was undertaken to test the hypothesis that catalase also provides protection against doxorubicin chronic cardiotoxicity. Transgenic mice containing cardiac catalase activities of 15-, 60-, or 100-fold higher than normal and nontransgenic controls were treated with doxorubicin in a cumulative dose of 45 mg/kg in five equal iv injections (9 mg/kg every other week) over a period of 10 weeks. On the second day after the last injection, the mice were sacrificed for analysis of cardiotoxicity. As compared to nontransgenic controls, doxorubicin-reduced body weight gain was significantly inhibited in the transgenic mice. There were 15% mortality in nontransgenic mice, but no mortality was observed in transgenic mice during the course of treatment. Light microscopic examination revealed that doxorubicin-induced myocardial morphological changes were markedly suppressed in the transgenic mice in an activity-dependent fashion. Under electron microscopy, extensive sarcoplasmic vacuolization and severe disruption of mitochondrial fine structure were observed in nontransgenic cardiomyocytes, but all markedly suppressed in the transgenic mice. The results indicate that catalase elevation in the heart prevents doxorubicin chronic cardiomyopathy.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0893-228X
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-6
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Inhibition of doxorubicin chronic toxicity in catalase-overexpressing transgenic mouse hearts.
pubmed:affiliation
Department of Medicine, University of Louisville School of Medicine, and Jewish Hospital Heart and Lung Institute, Louisville, KY 40202, USA. yjkang01@athena.louisville.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't