Characteristics and mechanism of enzyme secretion and increase in [Ca2+]i in Saikosaponin (I) stimulated rat pancreatic acinar cells

Table 1 Effect of different concentrations of Bt2-cGMP on amylase secretion stimulated by SA (I) and CCK-8

Bta-2-cGMP concentration (mol/L)	Amylase release (% of total)
	1 × 10-9 mol/L CCk-8	5 × 10-6 mol/L SA (I)
Control	19.5 ± 1.6	31.0 ± 2.1
1 × 10-7	17.8 ± 1.9a	27.4 ± 2.5a
1 × 10-6	15.6 ± 2.0b	25.6 ± 1.4b
1 × 10-5	14.0 ± 1.2b	23.1 ± 1.8b
1 × 10-4	12.8 ± 1.7b	21.2 ± 0.9b

Rat pancreatic acini were incubated with either 1 × 10^-9 mol/L CCk-8 or 5 × 10^-6 mol/L SA (I) in adding different concentrations of Bt₂-cGMP medium. After 30 min, the incubation was stopped and the content of amylase in the supernatant was assayed. The values represented the ^-x±s from 4 separate experiments.

^aP < 0.05,

^bP < 0.01 vs control.

Table 2 Effect of different concentrations of atropine on amylase secretion stimulated by SA (I) and CCh

Atropine concentration (mol/L)	Amylase release (% of total)
	1 × 10-5 mol/L CCh	5 × 10-6 mol/L SA (I)
Control	15.2 ± 1.3	30.8 ± 3.3
1 × 10-8	11.6 ± 1.6b	27.9 ± 11.4
1 × 10-7	10.5 ± 1.2b	25.1 ± 7.4
1 × 10-6	8.8 ± 1.3b	27.5 ± 6.9
1 × 10-5	8.3 ± 1.6b	25.5 ± 6.2

Rat pancreatic acini were incubated with either 1 × 10^-5 mol/L CCh or 5 × 10^-6 mol/L SA (I) in adding different concentration of atropine medium. After 30 min, the incubation stopped and the content of amylase in the supernatant was assayed. The values represent the ^-x±s from 4 separate experiments. ^aP < 0.05,

^bP < 0.01 vs control.