Adrenaline, noradrenaline, and adenosine 3',5'-monophosphate levels in plasma of healthy persons during ergometric work with and without beta-receptor blocking agents
Mäurer, W.; Kuhn, H.; Breithardt, G.; Kübler, W.
Recent Advances in Studies on Cardiac Structure and Metabolism 7: 369-374
1975
ISSN/ISBN: 0363-5872 PMID: 179120 Document Number: 87127
After endogeneous increase of noradrenaline and adrenaline during a submaximal exercise test, plasma levels of adenosine 3',5'-monophosphate (cyclic AMP) show no significant change. After effective beta-receptor blockade due to propranolol plasma levels of cyclie AMP do not change significantly, either during rest or during exericse. After effective beta-receptor blockade due to propranolol the plasma levels of noradrenaline and adrenaline, reached during exercise, are significantly reduced compared with the plasma catecholamine levels obtained under the same exercise conditions wtihout beta-blockade. In contrast to the findings of other investigators, increased plasma catecholamine levels after administration of propranolol could not be observed.