Blood pressure (BP), heart rate (HR), adrenaline (A) and noradrenaline (NA) effects of 2-desoxyglucose (500 mg/kg i.v.) were studied in conscious chronically instrumented wistar rats. A and NA contents in the blood were estimated by HPLC with electrochemical detection. In 15-40 minutes after 2-DG administration it was 13-16-fold increase in A content, 1.7-1.9-fold increase in NA content. At the same time BP fell by 5 mm Hg and HR fell by 100 beats/min. Atropine blocked bradycardia but had no effect on BP. It is concluded that high levels of endogenous A during stress are not responsible for cardiovascular responses usually observed.
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