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31 P and 1 H magnetic resonance spectroscopy of acute alcohol cardiac depression in rats
Author(s) -
Auffermann Wolfgang,
Camacho S. Albert,
Wu Shao,
Litt Lawrence,
Parmley William W.,
Higgins Charles B.,
WikmanCoffelt Joan
Publication year - 1988
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910080107
Subject(s) - depression (economics) , alcohol , nuclear magnetic resonance , magnetic resonance imaging , nuclear magnetic resonance spectroscopy , spectroscopy , cardiac magnetic resonance , medicine , resonance (particle physics) , cardiology , chemistry , physics , radiology , atomic physics , economics , biochemistry , quantum mechanics , macroeconomics
Cardiac depression in the isolated rat heart perfused with 4% ethanol was correlated with intracellular phosphate energetics and tissue water distributions. Energy metabolites were assessed using 31 P magnetic resonance spectroscopy (MRS) and correlated to the mitochondrial redox state using epicardial surface fluorometry. Changes in myocardial water compartmentation were measured by using 1 H NMR spectroscopy with an extracellular chemical‐shift reagent (DyTTHA) and correlated to results of 2D echocardiography (2DE). During alcohol perfusion there was a significant decrease in developed pressure and in coronary flow. No change was seen in ATP, PCr, pH i , P i , or NADH. After withdrawal of alcohol from the perfusate cardiac function reverted to control values without a depletion of energy levels. During alcohol perfusion 'H MRS showed a marked redistribution of water from the intra‐ to the extracellular space, corresponding to a 35% left ventricular wall thinning confirmed by 2DE. The results indicate that acute alcohol cardiac depression is related to a dehydration of myocardial cells, but is not associated with intracellular acidosis or energy depletion. 0 1988 Academic Press, Inc. © 1988 Academic Press, Inc.