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[Sedative-hypnotic effect of caulis Polygoni multiflori decoction].

J Yang, J Xu, L Zhou

Hua Xi Yi Ke Da Xue Xue Bao = Journal of West China University of Medical Sciences = Huaxi Yike Daxue Xuebao

|June 1, 1990

Summary

Caulis Polygoni multiflori decoction (CPMD) demonstrated sedative-hypnotic effects in animal models, enhancing barbiturate-induced sleep and mimicking diazepam

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Area of Science:

Pharmacology
Neuroscience
Traditional Chinese Medicine

Background:

Caulis Polygoni multiflori is a component of traditional Chinese medicine.
Sedative-hypnotic agents are crucial for managing sleep disorders.

Purpose of the Study:

To investigate the sedative-hypnotic effects of Caulis Polygoni multiflori decoction (CPMD).
To evaluate CPMD's efficacy compared to standard hypnotic drugs.

Main Methods:

Rolling cylinder method in mice to assess synergistic effects with sodium pentobarbital.
Somnopolygraphic recording in rats to analyze sleep architecture changes.
Dose-response and time-course evaluations of CPMD administration.

Main Results:

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CPMD (9g/kg) showed a synergistic hypnotic effect with a subthreshold dose of sodium pentobarbital (20mg/kg) in mice.
CPMD (20g/kg) exhibited hypnotic effects comparable to diazepam (5mg/kg) in rats, primarily by increasing slow wave sleep (SWS) and decreasing paradoxical sleep (PS).
A three-day administration of CPMD (twice daily) led to more pronounced hypnotic effects and a significant reduction in SWS latency.

Conclusions:

CPMD possesses significant sedative-hypnotic properties.
CPMD modulates sleep architecture, suggesting potential therapeutic applications for sleep disturbances.
Further research into CPMD's mechanisms of action is warranted.