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Abstract
- 1.1. Following experimental coronary occlusion in thirty-nine dogs, mean values of norepinephrine increased maximally from 1.6 to 10.5 μg-/L. of plasma in thirty-three surviving animals. Serum transaminase increments paralleled norepinephrine elevations in most instances. No changes occurred in circulating levels of epinephrine. Recordings of fluorescence emission spectrums aided in the identification and quantitation of the catecholamines.
- 2.2. Essentially the same results occurred in four chronically adrenalectomized dogs.
- 3.3. Following coronary occlusion and the administration of a sympatholytic agent (tri-methyl-2-2,6 xylyloxy-propyl ammonium chloride monohydrate), elevated circulating levels of norepinephrine declined progressively to pre-occlusion figures.
- 4.4. Of eighteen dogs treated with reserpine, eleven survived the occlusive procedure and showed increments in norepinephrine and transaminase similar to those of the untreated animals,
- 5.5. The catecholamine content of the infarct and the adjacent area was not elevated above the values found in normal tissue.
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Article Info
Publication History
with the technical assistance of Douglas C. Owens and Marcy S. Walsh
Footnotes
☆This work was supported by grants from the American Heart Association and National Heart Institute, U. S. Public Health Service (H-1846 C-4 and HTS-5200).
Identification
Copyright
© 1960 Published by Elsevier Inc.