Fig. 6. Effects of angiotensin II (ANG II; 10-8 mol l-1)
before and after injection with Triton X-100 (0.05%), or perfusion with
L-arginine (L-Arg; 10-6 mol l-1),
haemoglobin (Hb; 10-6 mol l-1),
L-N5(1-iminoethyl)ornithine (L-NIO;
10-5 mol l-1),
NG-monomethyl-L-arginine (L-NMMA;
10-5 mol l-1) and
1H-(1,2,4)oxadiazolo-(4,3-a)quinoxalin-1-one (ODQ; 10-5 mol
l-1) on stroke volume (VS) and stroke work
(WS) in isolated and perfused paced eel hearts. For
details of treatment and perfusions, see Materials and methods. Percentage
changes are shown as means ± S.E.M. of
4-5 experiments for each drug. *Significantly different from the
control value (P<0.05).