LIU Ya-li, SONG Yong-gui, GUAN Zhi-yu, et al. Intestinal Flora Degradation Dynamics of Saponins from Pulsatillae Radix in Rats[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(8): 1-4.
LIU Ya-li, SONG Yong-gui, GUAN Zhi-yu, et al. Intestinal Flora Degradation Dynamics of Saponins from Pulsatillae Radix in Rats[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(8): 1-4. DOI: 10.13422/j.cnki.syfjx.2015080001.
Objective: To elucidate pharmacodynamic mechanism of Pulsatillae Radix by investigating degradation dynamics of its saponins in intestinal flora. Method: HPLC-ELSD was adopted to determinate contents of pulchinenoside B3
BD
B7
B10
B11with mobile phase of methanol (A)-water (B) for gradient elution (0-30 min
75%-90%A)
drift tube temperature at 75 ℃
gas flow rate of 2.0 L·min-1.Degradation parameters were determinated through incubating total saponins from Pulsatillae Radix with rats' intestinal bacteria in vitro. Result: Saponins from Pulsatillae Radix were in accordance with first-order reaction
pulchinenoside B3
BD
B7
B10
B11 degradated rapidly in rats' intestinal flora within 48 hours with degradation rate constants were 0.079 4
0.052 3
0.053 9
0.042 6
0.046 8 h-1
half-life periods were 8.73
13.25
12.86
16.27
14.81 h
respectively. Conclusion: Intestinal flora is the most important factor on metabolism of prototype compounds of saponins from Pulsatillae Radix.