following blockade of the autonomic nervous system ( by i.v . injection of chlorisondamine plus infusion of phenylephrine to prevent hypotension ) vp release in response to stimulation of the lateral and dorsal portions of the pbn was greatly enhanced ( 8.8 +/- 1.4 pg/ml following ganglionic blockade but before pbn stimulation and 82 +/- 27 pg/ml following stimulation , p less than 0.01 ) and this increase in vp release was sufficient to increase arterial pressure ( + 18 +/- 3 mm hg , p less than 0.01 ) .
C0031469
phenylephrine
C0020649
hypotension