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American Journal of Pathology, Vol 123, 310-317, Copyright © 1986 by American Society for Investigative Pathology

REGULAR ARTICLES

Micromethods for determining activities of energy-producing and non- energy-producing pathways in myocardial tissue

JW King, FS Kennedy, HG Hanley, JJ Lierl, MR Fowler and MC White

The increasingly frequent use of endomyocardial biopsies for diagnosis has provided the opportunity to study myocardial metabolism in patients with cardiac diseases. The authors have tested microassays of the hexose monophosphate shunt, glycolytic pathway, and Krebs cycle and demonstrated that they are easily and reproducibly performed on small pieces of cardiac tissue. They have also used these assays to study myocardial metabolism in 2 patients with endocarditis uncomplicated by congestive heart failure and in 2 patients with congestive heart failure due to idiopathic dilated cardiomyopathy. The ability to quantitate myocardial metabolism in biopsies from patients with a variety of cardiac diseases may enhance our understanding of cardiac pathophysiology.