Document Detail


Chronic alcohol consumption enhances sepsis-induced cardiac dysfunction.
MedLine Citation:
PMID:  2058723     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Chronic alcoholism causes a cardiac contractile dysfunction which, in rats, may occur after 6 mo to 1 yr of alcohol consumption. Sepsis, on a more acute basis, can also induce intrinsic cardiac dysfunction. We tested the hypothesis that 2 mo of chronic alcohol feeding, while not directly causing overt depression of the myocardium, might sensitize the heart to a known cardiac stress, i.e., sepsis. We proposed that sepsis, induced in an alcoholic animal, would cause a more severe myocardial depression than in a nonalcoholic rat. Thus rats were fed a liquid diet with 36% of the total calories as alcohol for 8-10 wk and were then anesthetized and received an injection of live Escherichia coli (approximately 10(10) E. coli) through a dorsal subcutaneous catheter followed by a second dose approximately 5 h later. The following day, hearts were removed and, using the isolated working heart preparation, intrinsic contractile performance was assessed by generating ventricular function curves. Four groups of animals were studied. Hearts from the nonalcoholic-nonseptic group and the alcoholic-nonseptic group showed identical cardiac work (cardiac output x peak systolic pressure at the highest preload was 6,113 +/- 324 and 5,955 +/- 406 ml.min-1.mmHg-1, respectively). Work in the nonalcoholic-septic and the alcoholic-septic groups was decreased by 30 and 50%, respectively (4,806 +/- 478 vs. 2,917 +/- 435 ml.min-1.mmHg-1 at the highest preload). Thus 2 mo chronic alcohol consumption caused no overt cardiac dysfunction by itself but did exacerbate the myocardial injury induced by sepsis.
Authors:
K H McDonough; J J Henry
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of physiology     Volume:  260     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-08-01     Completed Date:  1991-08-01     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  H1857-63     Citation Subset:  IM    
Affiliation:
Department of Physiology, Louisiana State University Medical Center, New Orleans 70112.
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MeSH Terms
Descriptor/Qualifier:
Alcoholism / physiopathology*
Animals
Blood Pressure
Cardiac Output
Coronary Circulation
Escherichia coli / isolation & purification
Heart Diseases / microbiology,  pathology,  physiopathology*
Heart Rate
Hemodynamics*
Male
Myocardium / metabolism,  pathology
Rats
Rats, Inbred Strains
Sepsis / microbiology,  physiopathology*
Time Factors
Grant Support
ID/Acronym/Agency:
AA07747/AA/NIAAA NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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