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Am J Physiol 207: 733-735, 1964;
0002-9513/64 $5.00
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Effect of catecholamines on respiration of cerebral cortex and hypothalamus in female rats

Jaime Alberto Moguilevsky 1, Jose M. Trifaró 1, Virgilio G. Foglia 1, and Omar Schiaffini 1

1 Institute of Physiology, Buenos Aires Medical School, Buenos Aires, Argentina

Epinephrine and norepinephrine in vitro produced a significant elevation in the oxygen uptake of hypothalamus in diestrus rats. No changes were observed in the respiratory activity of cerebral cortex and hypothalamus during the estrus. An increase in the oxygen consumption of diestrus hypothalamus was obtained by the injection of pheniprazine; reserpine decreases the oxidative activity of cerebral cortex during diestrus and that of the hypothalamus during the estrus. It is suggested that the changes reported herein are related to modifications of the catecholamine levels in the hypothalamus during the sexual cycle.

Key Words: catecholamines and cerebral respiration

Submitted on February 24, 1964






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