[The mechanisms regulating the value of the arterial pressure in alert rats]

N-g-nitro-L-arginine increased the mean arterial pressure in intact alert rats against the background of phenoxybenzamine and captopryl, as well as benzohexonium. The findings suggest that systems of short-term blood-pressure control are limited by the sympatho-adrenal vasopressin and renin-angiotensin systems.