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[Nuclear magnetic resonance-based metabonomics for sedative and hypnotic effect of Banxia Houpo decoction].

Insomnia was a common disease, which might be correlated with γ-aminobutyric acid A (GABAA) receptor mechanism, cytokine regulatory mechanism, excitatory amino acid mechanism and hydroxytryptamine (5-HT) receptor mechanism, but the correlations between these independent mechanisms and pathological characterization were still unclear. To further explore the effect of Banxia Houpo decoction on known or unknown biological pathways during treatment of insomnia, the metabonomics method based on ¹H-NMR was developed for detecting the significant changes in metabolomics after the administration with Banxia Houpo decoction in pentobarbital sodium-induced rat sleeping experiment. Serum and urine samples were analyzed by ¹H-NMR. Principal component analysis (PCA) was carried out for endogenous small molecule metabolites in urine and serum. H-NMR spectroscopies and relevant metabolites were found and identified by Simca-p 17.0 (Umet-rics, Umea, Sweden) and Chenomx NMR Suite 7.1 (Chenomx, Inc., Edmonton, Alberta, Canada) software. The result suggests that Banxia Houpo decoction group and indiplon group had significant differences. The load diagram showed the biggest variation metabolites and intergroup significant differences among 10 metabolic substances. According to the experiment, Banxia Houpo decoction group and indiplon group can prolonge the sleeping time of pentobarbital sodium-induced sprague-dawley rats, with a synergistic effect. The significant changes of these biomarkers indicated that the Banxia Houpo decoction could aid sleep by adjusting the content of glutamine, creatine phosphate, 2-oxoglutarate, and reducing the activity of brain nerves.