Clinical Chemistry
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Clinical Chemistry 35: 667-670, 1989;
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Clinical Chemistry, Vol 35, 667-670, Copyright © 1989 by American Association for Clinical Chemistry

Proton nuclear magnetic resonance studies of plasma to determine metabolic status of patients with adult respiratory distress syndrome

CD Kuo, WG Wu, JH Wang, SM Chen and BN Chiang
Respiratory Therapy Department, Veterans General Hospital, Taipei, Taiwan, R.O.C.

Adult respiratory distress syndrome (ARDS) is a non-cardiogenic pulmonary edema of various etiologies. Here we report the first application of proton nuclear magnetic resonance (NMR) for the detection of abnormal metabolites in plasma from patients with ARDS. By comparing plasma obtained from the systemic artery with that obtained from the pulmonary artery, we could study the metabolic status of the lung in patients with ARDS. Although their concentrations may vary, the peaks for acetate, acetoacetate, beta-hydroxybutyrate, phenylalanine, and other unidentified compounds in water-suppressed NMR of these patients' plasma were higher than in the normal controls. The proton NMR resonance at a chemical shift of about 7.4 ppm (relative to sodium tetradeutero-3-trimethyl-silylpropionate), presumably caused by phenylalanine and its related metabolites produced by a disordered amino acid metabolism, is detected in greater than 65% of the samples from ARDS patients. We discuss the detection of abnormal metabolites in terms of possible deranged metabolism of carbohydrates, lipids, or amino acids in this syndrome.




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Copyright © 1989 by the American Association for Clinical Chemistry.