Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 3 de 3
Add filters

Year range
Article in English | WPRIM | ID: wpr-880559


OBJECTIVE@#To reveal the effect and mechanism of Jiaotai Pill (, JTP) on insomniac rats.@*METHODS@#The insomniac model was established by intraperitoneal injection of p-chlorophenylalanine (PCPA). In behavioral experiments, rats were divided into control, insomniac model, JTP [3.3 g/(kg•d)], and diazepam [4 mg/(kg•d)] groups. The treatment effect of JTP was evaluated by weight measurement (increasement of body weight), open field test (number of crossings) and forced swimming test (immobility time). A high performance liquid chromatography-electrochemical detection (HPLC-ECD) method was built to determine the concentration of monoamine transmitters in hypothalamus and peripheral organs from normal, model, JTP, citalopram [30 mg/(kg•d)], maprotiline [40 mg/(kg•d)] and bupropion [40 mg/(kg•d)] groups. Expressions of serotonin transporter (SERT), dopamine transporter (DAT), and norepinephrine transporter (NET) were analyzed by quantitative polymerase chain reaction (qPCR) and Western blot in normal, model and JTP groups. A high performance liquid chromatography-electrospray ionization mass spectrometry (HPLC-ESI-MS/MS) method was established to determine the pharmacokinetics, urine cumulative excretion of metformin in vivo, and tissue slice uptake in vitro, which were applied to assess the activity of organic cation transporters (OCTs) in hypothalamus and peripheral organs.@*RESULTS@#Compared with the insomniac model group, the body weight and spontaneous locomotor were increased, and the immobility time was decreased after treatment with JTP (P<0.01). Both serotonin and dopamine contents in hypothalamus and peripheral organs were increased (P<0.01). The norepinephrine content was increased in peripheral organs and decreased in hypothalamus (P<0.05 or P<0.01). At the same time, SERT, DAT, OCT1, OCT2, and OCT3 were down-regulated in hypothalamus and peripheral organs (P<0.05). NET was down-regulated in peripheral organs and up-regulated in hypothalamus (P<0.05 or P<0.01). Moreover, the activity of OCTs in hypothalamus and peripheral organs was inhibited (P<0.05).@*CONCLUSION@#JTP alleviates insomnia through regulation of monoaminergic system and OCTs in hypothalamus and peripheral organs.

Article in Chinese | WPRIM | ID: wpr-873325


Objective::To investigate in vivo and in vitro metabolites of coptisine and their metabolic pathways. Method::SD rats were given coptisine by single gavage (dose of 25 mg·kg-1). Urine and feces from 0 h to 48 h, bile from 0 h to 24 h, and plasma and brain tissue samples at 0.25, 1, 2 h after administration were collected.In vitro metabolism was incubated with rat liver microsomes and intestinal flora.The metabolites were analyzed and identified by the high-resolution HPLC-MS/MS technique.The liquid chromatography separation was carried out on ZORBAX SB-C18 column (4.6 mm×150 mm, 5 μm) with acetonitrile-0.1% formic acid solution as the mobile phase for gradient elution, the flow rate was 1.0 mL·min-1, and column temperature was 25 ℃.The mass spectra were obtained in positive and negative ion mode with electrospray ionization (ESI), the scanning range was m/z 50-1 200.The relative molecular weight was determined according to the quasi-molecular ion peaks.The structures of metabolites were elucidated by comparing the data with literature data, including main ion peaks, UV spectrum and HPLC retention time information. Result::A total of 17 metabolites were identified in each sample, including 11 phase Ⅰ metabolites and 6 phase Ⅱ metabolites.The pathways to these metabolites were hydroxylation, demethylation, dehydrogenation, sulfation and glucuronide conjugation. Conclusion::Coptisine can produce metabolic reaction of phase Ⅰ and phase Ⅱ in rat, and metabolites are predominantly present in urine, and the main metabolic site is liver.Coptisine is poorly absorbed and rarely metabolized in gastrointestinal tract, so it is mostly excreted through feces by prototype.This experiment can provide material basis for the pharmacodynamics and pharmacology of coptisine.

Article in Chinese | WPRIM | ID: wpr-827965


To explore the pathogenesis of heart and kidney imbalance insomnia and the regulatory effect of Jiaotai Pills, in order to study the changes of central and peripheral neurotransmitters in rat. Insomnia rats with heart and kidney imbalance were induced through intraperitoneal injection with p-chlorophenylalanine(PCPA, 400 mg·kg~(-1)·d~(-1)), and the model rats were intragastrically administrated with Jiaotai Pills(3.3 g·kg~(-1)·d~(-1)) for 7 days. Nine neurotransmitters were determined by UPLC-MS/MS and principal component analysis(PCA) method in serum, urine, brain, heart, liver, kidney and adrenal gland of rats. The results showed that the ratio of 5-HT and 5-HIAA in platelet of insomnia rats was significantly lower than that in the normal group, and Jiaotai Pills had a significant up-regulatory or down-regulatory effect. Compared with the normal group, the changed neurotransmitters in blood of insomnia rats were 5-HIAA, E, NE, DA, Glu and ACH, and except ACH, the changes of 7 kinds of neurotransmitters in urine were more significant, Jiaotai Pills had a significant up-regulatory or down-regulatory effect. Compared with the normal group, all of the 8 neurotransmitters in insomnia rats except HVA were changed. Jiaotai Pills could regulate the neurotransmitters in each tissue of insomnia rats, especially in brain, liver and adrenal gland. In conclusion, insomnia is caused by not only a change of neurotransmitters in brain, but also a series of changes in peripheral tissues. It indicates that insomnia is a systematic imbalance of neurotransmitters. Jiaotai Pills not only regulates the central nervous system, but also has a certain protective effect on other organs, reflecting the multi-target and systematic effect of Jiaotai Pills in the treatment of insomnia.

Animals , Chromatography, Liquid , Drugs, Chinese Herbal , Neurotransmitter Agents , Rats , Sleep Initiation and Maintenance Disorders , Tandem Mass Spectrometry