Group

Ach (╬╝mol/mg)

Expression of M2 receptors

Expression of M3 receptors

cAMP (mmol/mg)

PKA (pg/ml)

Control group

3.42 ± 0.40

0.117 ± 0.004

0.181 ± 0.004

13.52 ± 0.60

0.463 ± 0.045

Model group

3.37 ± 0.51

0.215 ± 0.004**

0.130 ± 0.002**

10.63 ± 0.80*

0.320 ± 0.051*