Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2013
[The effect of surfentanyl and fentanyl at rhythmic spontaneous contraction on isolated rabbits uterine smooth muscles].
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Luo Lin-Li, Lü Sheng, Luo Dong, Gao Xing-Rong, Huang Wei, Ni Juan
Аннотация
OBJECTIVE: To investigate the effects of surfentanyl and fentanyl on spontaneous contractions of isolated uterine smooth muscles of rabbits.
METHODS: Thirty isolated uterine smooth muscles strips of rabbits with rhythmic spontaneous contraction were randomly divided into three groups: control group (n = 10) fentanyl group (n = 10) and surfentanyl group (n = 10). The effects of fentanyl and surfentanyl on spontaneous contractions intensity, frequency and duration of isolated uterine smooth muscles of rabbits in different concentrationswere monitored.
RESULTS: There were no effect on the spontaneous contraction of isolated uterine muscles of rabbits at the concentration of 1 x 10(-8) mol/L in fentanyl group. The spontaneous contraction intensity was decreased significantly when the concentration of fentanyl more than 3 x 10(-8) mol/L (P < 0.05). The spontaneous contraction intensity, frequency and duration was inhibited more than 50% when the concentration of fentanyl more than 3 x 10(-7) mol/L (P < 0.05). And the spontaneous contraction duration was inhibited more than 50% when the concentration of surfentanyl more than 1 x 10(-7) mol/L (P < 0.05). Compared with surfentanyl group, there were significant difference on spontaneous contraction intensity when the concentration of fentanyl more than 3 x 10(-8) mol/L (P < 0.05). Difference on frequency, more than 3 x 10(-8) mol/L (P < 0.05) and difference on duration, at the concentration of 1 x 10(-7) and 1 x 10(-7) mol/L (P < 0.05).
CONCLUSION: Fentanyl restrained the spontaneous contractions of isolated uterine smooth muscles of rabbits in concentration-dependent manner. Surfentanyl could reduce the spontaneous contractions duration on isolated uterine smooth muscles of rabbits. But there were no effect on frequency and duration.
METHODS: Thirty isolated uterine smooth muscles strips of rabbits with rhythmic spontaneous contraction were randomly divided into three groups: control group (n = 10) fentanyl group (n = 10) and surfentanyl group (n = 10). The effects of fentanyl and surfentanyl on spontaneous contractions intensity, frequency and duration of isolated uterine smooth muscles of rabbits in different concentrationswere monitored.
RESULTS: There were no effect on the spontaneous contraction of isolated uterine muscles of rabbits at the concentration of 1 x 10(-8) mol/L in fentanyl group. The spontaneous contraction intensity was decreased significantly when the concentration of fentanyl more than 3 x 10(-8) mol/L (P < 0.05). The spontaneous contraction intensity, frequency and duration was inhibited more than 50% when the concentration of fentanyl more than 3 x 10(-7) mol/L (P < 0.05). And the spontaneous contraction duration was inhibited more than 50% when the concentration of surfentanyl more than 1 x 10(-7) mol/L (P < 0.05). Compared with surfentanyl group, there were significant difference on spontaneous contraction intensity when the concentration of fentanyl more than 3 x 10(-8) mol/L (P < 0.05). Difference on frequency, more than 3 x 10(-8) mol/L (P < 0.05) and difference on duration, at the concentration of 1 x 10(-7) and 1 x 10(-7) mol/L (P < 0.05).
CONCLUSION: Fentanyl restrained the spontaneous contractions of isolated uterine smooth muscles of rabbits in concentration-dependent manner. Surfentanyl could reduce the spontaneous contractions duration on isolated uterine smooth muscles of rabbits. But there were no effect on frequency and duration.