Effects of rhubarb on isolated gastric muscle strips of guinea pigs

Table 1 Effect of rhubarb and antagonists plus rhubarb on the resting tension of gastric body CM of guinea pigs (mean±SE, n = 12).

Group	0	1%	3%	10%	30%	100%
Rhubarb	1.00	1.04±0.02a	1.15±0.05a	1.42±0.08b	1.75±0.08b	1.88±0.08b
Atropine (10-6 mol/L)+rhubarb	1.00	1.00c	1.02±0.01c	1.08±0.02bd	1.19±0.03bd	1.43±0.06bd
Isoptin (5×10-8 mol/L)+rhubarb	1.00	1.01±0.01	1.03±0.02	1.09±0.04ad	1.23±0.05bd	1.42±0.06bd
Hexamethonium (10-5mol/L)+rhubarb	1.00	1.00c	1.05±0.02a	1.10±0.02bd	1.24±0.05bd	1.39±0.04bd

^aP<0.05,

^bP<0.01 vs control;

^cP<0.05,

^dP<0.01 vs rhubarb in the same concentration.