Pharmacokinetic properties and in vitro enzyme activities of TPGS-modified arginine deiminase cyclodextrin lipid nanoparticles / 中国药理学通报

Aim To investigate the pharmacokinetic properties and in vitro enzyme activities of D-a-to- copherol polyethylene glycol 1000 succinate-modified arginine deiminase cyclodextrin lipid nanoparticles (ACLN). Methods The diacetylmonooxime-thiosem- icarbazide colorimetric method was used to determine the ADI enzyme activity, and the double reciprocal plot method was used to determine the enzyme Michae- lis constants. After the rats were given intravenously free ADI and ACLN, rat plasma samples were taken at different time points to determine the activity of ADI, and the time-enzyme activity curve would be drawn and the pharmacokinetic data analyzed by DAS 2. 1. 1. Re¬sults The optimum temperature for ADI and ACLN was 37 °C and the optimum pH was 6. 5. The Km val¬ ues of free ADI and ACLN were 0. 87 and 0. 74 mmol • L"1, respectively. The Vmai values of free ADI and ACLN were 53.28, 62.50 fjimol • L"' • min"1, re-spectively. The V

Single nucleotide polymorphisms of NR3C1 gene in childhood asthma and its influence on the efficacy of glucocorticoids / 国际儿科学杂志

Objective:To investigate the correlation between single nucleotide polymorphism of corticosteroids receptor gene(NR3C1)and children with asthma and to analyze the efficacy of inhaled corticosteroid(ICS)treatment.Methods:The study included a control group(100 healthy children)who participated in the physical examination and an asthma group(101 children with bronchial asthma)who were hospitalized in the General Hospital of the Northern Theater Command from October 2018 to October 2020.Genomic DNA was extracted from peripheral blood samples of all enrolled subjects and then the polymorphism of the glucocorticoid receptor gene locus of NR3C1 was analyzed using SNaPshot SNP gene detection technology.The comparisons of allele frequency in rs41423247、rs7701443 between two groups were performed and the treatment effects of ICS in the asthma group were evaluated at the 12th week of treatment.Results:The frequencies of GG, GC, and CC genotypes of rs41423247 locus of NR3C1 were 75.2%, 21.8%, and 3.0% in the asthma group and 72.0%, 24.0%, and 4.0% in the control group, respectively, and there were no statistically significant differences between the two groups( χ2=0.333, P>0.05). The frequencies of GG, GA, and AA genotypes of rs7701443 locus of NR3C1 were 45.5%, 39.6%, and 14.9% in the asthma group and 56.0%, 31.0%, and 13.0% in the control group, respectively, and there were no statistically significant differences between the two groups( χ2=2.259, P>0.05). After ICS treatment, the C-ACT/ACT scores were not significantly improved in children with CC genotypes at rs41423247 locus( P>0.05), while children with GG and GC genotypes were obviously improved( P<0.05). The scores of C-ACT/ACT showed obvious differences among three genotypes of rs41423247 locus after treatment with ICS( P<0.05). The C-ACT/ACT scores of all were significantly improved in children with GG, GA, or AA genotypes at rs7701443 locus after treatment with ICS( P<0.05), while there was no significant difference among those three genotypes( P>0.05). Significantly improved pulmonary function following ICS treatment in children with asthma was observed in GG and GC genotypes of rs41423247 locus of NR3C1( P<0.05), while only MMEF was improved in CC genotype( P<0.05). Meanwhile, those pulmonary function indexes were improved in all genotypes of rs7701443 after treatment with ICS( P<0.05). Conclusion:Both rs41423247 and rs7701443 locus at NR3C1 gene have polymorphisms.But there were no significant differences in the polymorphism of rs41423247 and rs7701443 locus of NR3C1 between the asthma group and the control group.Different genotype frequencies of rs41423247 and rs7701443 at NR3C1 locus in children with asthma have different effects on ICS treatment.

Personalised management of Chronic Obstructive Pulmonary Disease (COPD): Malaysian consensus algorithm for appropriate use of inhaled corticosteroid (ICS) in COPD patients

@#Background: Regarding the long-term safety issues with the use of inhaled corticosteroids (ICS) and the clinical predominance of dual bronchodilators in enhancing treatment outcomes in chronic obstructive pulmonary disease (COPD), ICS is no longer a “preferred therapy” according to the Global Initiative for Chronic Obstructive Lung Disease except on top of a dual bronchodilator. This has necessitated a change in the current therapy for many COPD patients. Objective: To determine a standardised algorithm to reassess and personalise the treatment COPD patients based on the available evidence. Methods: A consensus statement was agreed upon by a panel of pulmonologists in from 11 institutes in Malaysia whose members formed this consensus group. Results: According to the consensus, which was unanimously adopted, all COPD patients who are currently receiving an ICS-based treatment should be reassessed based on the presence of co-existence of asthma or high eosinophil counts and frequency of moderate or severe exacerbations in the previous 12 months. When that the patients meet any of the aforementioned criteria, then the patient can continue taking ICS-based therapy. However, if the patients do not meet the criteria, then the treatment of patients need to be personalised based on whether the patient is currently receiving long-acting beta-agonists (LABA)/ICS or triple therapy. Conclusion: A flowchart of the consensus providing a guidance to Malaysian clinicians was elucidated based on evidences and international guidelines that identifies the right patients who should receive inhaled corticosteroids and enable to switch non ICS based therapies in patients less likely to benefit from such treatments.

Evaluation of a custom transcriptome sequencing library construction reagent with a small amount of cell input / 上海交通大学学报（医学版）

Objective : To verify the feasibility of replacing the expensive commercial reagent SMART-Seq v4 Ultra Low Input RNA Kit (hereinafter referred to as TaKaRa reagent) with a reagent (hereinafter referred to as DIY reagent) which was made by ourselves based on the SMART (switching mechanism at 5' end of RNA template) technology. Methods ¡¤ Four 8-week-old C57BL/6 female mice were randomly di-vided into two groups. One group did not receive any treatment as a control, and the other group was intraperitoneally injected with 1 mL of 4% thioglycollate broth to induce peritoneal macrophages. After 72 hours, RNA was extracted from the peritoneal macrophages. cDNA library con-struction was performed with DIY reagent and TaKaRa reagent respectively. Finally, bioinformatics analysis was performed to compare the RNA sequencing results after use of different library construction reagents from different aspects, such as data quality, gene differential expression analysis, and KEGG (Kyoto encyclopedia of genes and genomes) pathway analysis. Results ¡¤ The results of bioinformatics analysis showed that the sample processed by the DIY reagent and TaKaRa reagent were both of good data quality, and the two reagents had comparative capabil-ity in transcripts capture. Gene coverage of the sequences both showed consistent uniformity. On top of these, the results of differential gene ex-pression analysis and gene pathway analysis were consistent. Conclusion ¡¤ Considering relatively great reduction in experimental cost for li-brary construction, the DIY reagent can replace expensive commercial reagent for library construction experiments with a small amount of cell input.

Comparison of safety pattern of drugs used in chronic obstructive pulmonary disease patients in a tertiary care hospital

Background: As per GOLD (Global initiative for chronic obstructive lung disease) guidelines bronchodilators are required for symptomatic treatment of chronic obstructive pulmonary disease (COPD) patients. Currently there is no evidence to say about the safety of fixed dose combinations used in COPD patients. Since the drugs are to be taken for longer period, it is essential to know the safety aspects of these drugs. Moreover we don’t have adequate studies and documentation to say that a particular drug combination is better and safer for COPD patients.Methods: Prospective, open labelled, randomized, comparative, interventional clinical study conducted by the Departments of Pharmacology and Pulmonary Medicine of Basaveshwara Medical College and Hospital, Chitradurga in 40 COPD patients.Results: The fixed dose combinations of drugs used in both the treatment groups i.e. salmeterol/fluticasone and tiotropium/formoterol were equally safer and well tolerated. Some side effects noticed during the course of treatment were statistically significant when compared between the 2 groups, however they were milder and predictable adverse drug reactions.Conclusions: Systemic and severe adverse drug reactions were not observed during 8 week treatment period and the local side effects observed were mild in both the treatment groups. Hence the fixed dose combinations of salmeterol or fluticasone and tiotropium or formoterol are found to be safer for maintenance therapy in COPD patients.

A Randomised Controlled Study to Compare the Efficacy and Safety of Intracorpospongiosal Anesthesia alone Versus Transperineal Urethrosphincteric Block and Intracorpos Spongiosal Anesthesia Combined in Direct Vision Internal Urethrotomy in Urethral Strictures

Introduction:DVIU is a common urological procedure forshort segment urethral stricture ≤2cm and is generally doneunder spinal anesthesia. The study was performed to accessthe feasibility to perform DVIU under local anesthesia toreduce the cost, hospital stay and the morbidity of anaesthesia.Material and Methods: A prospective randomized study wasconducted in 168 patients who were divided in two groups.Group ‘a’ received only ICS block intra corporospongiosalblock) and group ‘b’ received both ICS with USblock(urethrosphincteric block).VAS pain score was obtainedat the end and one hour after the procedure.Results: The visual analogue score (VAS) at the time ofprocedure were significantly lower for Group ‘b’ (Groupa =3.46, Group b=2.55 p value=0.0053), and was alsolower at the end of one hour (Group a=3.1, Group b=2.01 pvalue=0.0001). The change in blood pressure and pulse rateas a measure of hemodynamic variability were recorded inboth groups and significant differences were noted at the timeof procedure Group ‘a’ 6.43±1.08, Group ‘b’ 3.95±1.46, p <0.0001 value.Conclusion: DVIU is a common urological procedure whichcan be safely performed under local anaesthetic blocks insteadof spinal anaesthesia. A combination of ICS with US blockincreases the safety and tolerability of the procedure.

Association of Interleukin-10 -1082A>G (rs1800896) Polymorphism with Predisposition to Breast Cancer: a Meta-Analysis based on 17 Case-Control Studies

SUMMARY INTRODUCTION The association between the between IL-10 -1082A>G (rs1800896) polymorphism and breast cancer has been evaluated by several number case-control studies. However, these studies might be underpowered to reveal the true association. OBJECTIVE We have performed a comprehensive meta-analysis to investigate the association IL-10 -1082A>G polymorphism and breast cancer. MATERIALS AND METHODS A systematic literature search was conducted using PubMed, Google Scholar, and Web of Science up to September 20, 2017. Data was analysed with CMA software to identify the strength of the association by pooled odds ratios (ORs) with corresponding 95% confidence intervals (CIs). RESULTS A total of 17 case-control studies involving 3275 cases and 3416 controls obtained from database searches were examined. Overall, there was no significant association between IL-10 -1082A>G polymorphism and breast cancer risk under all genetic models. No significant publication bias was found for the five genetic models (G vs. A OR = 1.184, 95% CI = 0.895-1.180, p= 0.230; GG vs. AA: OR = 1.430, 95% CI = 0.927-2.204, p= 0.106; GA vs. AA: OR = 0.966, 95% CI = 0.765-1.221, p= 0.774; GG+GA vs. AA: OR = 0.957, 95% CI = 0.697-1.314, p= 0.786; and GG vs. GA+AA: OR = 1.221, 95% CI = 0.981-1.518, p= 0.073). Moreover, there was no significant association between the IL-10 -1082A>G polymorphism and breast cancer risk by ethnicity. CONCLUSION Our findings indicated that IL-10 -1082A>G (rs1800896) polymorphism might not be a risk factor for the development of breast cancer.

RESUMO

The comparisons of the efficacy of two fixed dose combinations, i.e. Salmeterol and Fluticasone vs. Formoterol and Tiotropium bromide in moderate to severe COPD patients

Background: Bronchodilators are essential for symptomatic management of all stages of chronic obstructive pulmonary disease (COPD). For patients whose COPD is not sufficiently controlled by monotherapy, combining a ß2-agonist with either inhaled steroid or anticholinergic drug is a convenient way of delivering treatment. Currently, there is no documentation to say that one drug is superior to other or the contrary, but a combination of two drugs is more effective than giving single drug alone in patients suffering from COPD.Methods: The study was prospective, open labelled, randomized, comparative interventional clinical study conducted by the Departments of Pharmacology and Medicine, Basaveshwara Medical College and Hospital, Chitradurga in 60 moderates to severe COPD patients.Results: Both the treatments i.e. Salmeterol/Fluticasone and Tiotropium/Formoterol were equally effective as far as the improvement of the lung functions and Borg dyspnoea score are concerned. The difference in improvement with the combination of Salmeterol/Fluticasone was not statistically significant (p>0.05) compared to the combination of Tiotropium/Formoterol. However, Salmeterol/Fluticasone was found to be better than Tiotropium/Formoterol in improving the lung function of moderate to severe COPD patients.Conclusions: Salmeterol/Fluticasone is efficacious and better than Tiotropium /Formoterol combination for maintenance therapy in moderate to severe COPD patients.

The comparison of clinical efficacy of formoterol and fluticasone versus salmeterol and fluticasone in patients of bronchial asthma

Background: Fixed-dose combinations of Inhaled corticosteroids (ICS) and Long acting beta agonist (LABA) are established and widely used treatment for bronchial asthma when ICSs as monotherapy are ineffective. This study attempted to compare the efficacy of salmeterol and fluticasone with formoterol (newer LABA) and fluticasone in patients of bronchial asthma.Methods: An open label, randomized, prospective, parallel and comparative study of eight-week duration was conducted on 80 patients of bronchial asthma, with the collaboration of Department of pharmacology and Department of Tuberculosis and Chest Diseases Hospital, Government medical college, Amritsar. Patients in Group A were treated with 2 actuations of Formoterol and Fluticasone (6/125µg) twice daily and group B patients were treated with 2 actuations of Salmeterol and Fluticasone (50/125µg) twice daily for 8 weeks with metered dose inhaler (MDI). Patients in group A and B were assessed on day zero, 4 weeks and 8 weeks for clinical assessment and computerized spirometry for FVC, FEV1, FEV1/FVC and PEFR.Results: In group A mean±SD of FEV1 statistically significantly increased (<0.001) after eight week of therapy (1.50±0.12) from its baseline values (1.34±0.11). Similarly, in group B mean ± SD of FEV1 statistically significantly increased (<0.001) after eight weeks (1.48±0.13) from its baseline values (1.36±0.12). There was statistically significant (<0.001) improvement in other parameters of spirometry in patients of both the groups.Conclusions: It was observed that both the combination of Fluticasone + Formoterol and Fluticasone + Salmeterol are effective in the treatment of bronchial asthma.

Multiple omics matrix and schizophrenic biomarkers / 中华行为医学与脑科学杂志

The etiology and pathological mechanism of schizophrenia are very complicated,and the heterogeneity of clinical manifestation and the heterogeneity of treatment reaction are also distinct. The jour-nal of World Journal of psychiatry reported that in the past 20 years,about the schizophrenic biomarker stud-y,either the direction of our research is wrong,or the direction is right,but the method is wrong. It is urgent to adopt new technologies to carry out study about the biomarkers of schizophrenia from multiple perspectives. It can be seen that the precise exploration of the etiology and specific pathological mechanism and therapeutic targets of schizophrenia is still a common research task of the world researchers. Compared with the research results achieved by tumor and heart disease study and the rapid development of clinical transformation,psy-chiatric research needs to consider other disciplines'ideas,methods and techniques to promote the research of schizophrenia. In the past 2 years,many scholars have studied schizophrenia from different perspectives. This paper reviewed the previous studies about omics matrix biomarkers study during the past two years. We brief-ly summarized the previous findings from the brain connectomics,genomics,proteomics,and microbial genom-ics perspective,respectively. We generally described the progress of brain imaging networks,gene networks, protein networks and micro biological networks in schizophrenia to increase our understanding of knowledge in this field.

Epigenetic pathogenesis of post-traumatic stress disorder based on the HPA aixs / 中国药理学通报

Currently,the worldwide frequency of catastrophic e-vents has made post-traumatic stress disorder (PTSD)a major public health problem.As a stress-related psychiatric disorder, PTSD is considered as the result of interaction between gene and environments (especially early life adversity).The epigenetics plays an important role in PTSD pathogenesis.Due to the core role of hypothalamic-pituitary-adrenal (HPA)axis,the research on the relationship between HPA axis epigenetics and PTSD pathogenesis in recent years was reviewed in the paper so as to provide references and thinking of the prevention and therapy for PTSD in the future.

Evaluation of Brodifacoum-induced Toxicity by Metabonomics Approach Based on HPLC-TOF-MS / 法医学杂志

Objective T o analyse the m etabolic changes in urine of rats w ith brodifacoum intoxication, and to reveal the m olecular m echanism of brodifacoum-induced toxicity on rats. Methods B y establish-ing a brodifacoum poisoning rats m odel, the urine m etabolic profiling data of rats w ere acquired using high performance liquid chromatography-timeofflightmassspectrometry (HPLC-TOF-M S).The orthogo-nal partial least squares analysis-discrim ination analysis (O PLS-D A ) w as applied for the m ultivariate statistics and the discovery of differential m etabolites closely related to toxicity of brodifacoum . Results O PLS-D A score plot show ed that the urinary m etabolic at different tim e points before and after drug adm inistration had good sim ilarity w ithin tim e period and presented clustering phenom enon. C om paring the urine sam ples of rats before drug adm inistration w ith w hich after drug adm inistration, tw enty-tw o m etabolites related to brodifacoum-induced toxicity w ere selected. Conclusion T he toxic effect of brodi-facoum w orked by disturbing the m etabolic pathw ays in rats such as tricarboxylic cycle, glycolysis, sphin-golipid m etabolism and tryptophan m etabolism , and the toxicity of brodifacoum is characterized of accu-m ulation effect. The m etabonom ic m ethod based on urine H PLC-TO F-M S can provide a novel insight into the study on m olecular m echanism of brodifacoum-induced toxicity.

New Progress of MALDI-TOF-IMS in the Study of Proteomics / 法医学杂志

Matrix-assisted laser desorption/ionization tim e-of-flight im aging m ass spectrom etry (MALDI-TOF-IMS ) has been a classical technique for studying proteom ics in present and a tool for analyzing the distribution of proteins and sm all m olecules w ithin biological tissue sections. MALDI-TOF-IMS can analyze m ultiple unknow n com pounds in biological tissue sections sim ultaneously through a single m ea-surem ent w hich can obtain m olecule im aging of the tissue w hile m aintaining the integrity of cellular and m olecules in tissue. In recent years, im aging m ass spectrom etry technique develops relatively quickly in all biom edical dom ain. T his paper based on the relevant data and review s the present developing level of MALDI-TOF-IMS, the principle of im aging m ass spectrom etry, m ethology and the prospect in foren-sic pathology.

Clinical Observation of Recombinant Human Brain Natriuretic Peptide Combined with Levosimendan in the Treatment of Acute Decompensated Heart Failure / 中国药房

OBJECTIVE:To observe the clinical efficacy of recombinant human brain natriuretic peptide (rhBNP) combined with levosimendan in acute decompensated heart failure(ADHF). METHODS:In retrospective study,120 cases diagnosed as AD-HF were divided into observation group and control group according to treatment plan,with 60 cases in each group. The patients of control group received rhBNP on the basis of conventional treatment,intravenously pulsed with dose of 0.15 μg/kg firstly,then maintained dose of 0.007 5 μg/kg viacontinuous intravenous pumping for 24-72 h;On the basis of control group,treatment group received levosimendan with loading-dose of 12 μg/(kg·min)for 10 min,maintenance dose of 0.1 μg/(kg·min)via intravenous pump,for 24 h,adjusted according to clinical manifestations of patients. The vital signs,hemodynamic and UCG indexes,the rate of dyspnea recovery,plasma level of BNP,urine and the occurrence of ADR were recorded in 2 groups. RESULTS:The vital sign and hemodynamic indexes of control group had no significant change 1 h after treatment;the levels of HR,RR,SBP,MPAP and MPCWP in 2 groups after treatment were significantly lower than before,while the levels of SaO2 and CO were significantly higher than before,with statistical significance (P0.05). 48 h after treatment,LVEF of 2 groups were increased while plasma levels of BNP were decreased,compared to before treatment;the improvement of observation group was more significant than control group,with statistical significance(P0.05). CONCLU-SIONS:rhBNP combined with levosimendan could effectively improve vital sign,hemodynamic indexes,UCG indexes and dys-pnea,and decrease the plasma level of BNP with good safety.

Status of circulating immune complexes, IL8 titers and cryoglobulins in patients with dengue infection.

Dengue, a serious viral infection caused by the mosquito vector, Aedes aegyptii, affects about 390 million people annually from more than 125 countries across the globe. However, until now, there is no reliable clinical or laboratory indicator to accurately predict the development of dengue severity. Here, we explored critical pathophysiological determinants like IL8, circulating immune complex (CIC) and cryoglobulin in dengue-infected patients for identification of novel dengue severity biomarker(s). Totally, 100 clinically suspected dengue cases were tested by NS1 ELISA and MAC ELISA for dengue virus aetiology. For control, 49 healthy volunteers were included. Blood profiling (complete hemogram and liver function test) of patient population were done using automated cell counter and standard auto analyzer based biochemical analysis. Serum CIC was quantified by PEG precipitation. Serum cryoglobulins were estimated by Folin assay. Levels of serum IL-8 were assessed by standard sandwich ELISA kits. Patient CIC were further characterized by SDS Gel electrophoresis. Forty per cent of the cases tested positive, of which 11 patients had severe clinical manifestation. The mean ±SEM of cryoglobulin concentration for DHF, DF, and HC were 1.30±0.31, 0.59±0.08 and 0.143±0.009 μg/μl, respectively. Thus, DHF and DF patients have shown 9- and 2.2-fold increase in cryoglobulin levels; and 18- and 5-fold increased CIC, respectively compared to HC patients. The mean ±SEM of CIC-PEG index for DHF, DF and HC were 491±41.22, 146±14.19 and 27.98±2.56, respectively. Raised levels of IL8 titers were also found in all 11 DHF patients. Peak levels of CIC, cryoglobulin and IL8 titers were associated with thrombocytopenia. SDS PAGE analysis of CIC from DHF revealed the presence of at least six protein bands that were not observed in samples from DF and HC. Prediction efficacy of IL8, CIC and cryoglobulin for DHF was determined using the receiver operator characteristic curve (ROC). The area under the curve was 1.00 for IL8, 0.99 for CIC and 0.74 for cryoglobulins. Overall, the results suggest that CIC, IL-8 and cryoglobulins may serve as important laboratory parameters to monitor dengue infection progression.

On function of long noncoding RNA / 中国药理学通报

Long noncoding RNAs ( lncRNAs ) are transcribed RNA molecules greater than 200 nucleotides in length. In recent years, studies have shown that lncRNAs have many important bi-ological functions. With the development of modern biological technology, lncRNAs transcripts can be easily detected and pre-dicted. However, unlike protein-coding genes whose sequence motifs usually have indicative function, lncRNA sequence infor-mation is currently uninformative for function prediction. Thus, how to decode the function of lncRNAs has gradually become a hot issue in genome research. The paper summarizes the studies regarding the methods to probe the function of lncRNAs.

Optimization of detection method of pulmonary arterial pressure / 中国药理学通报

Aim To optimize the traditional method of right catheterization in rats and establish a rapid , stable and reliable method of the right heart catheter guided intubation to measure pulmonary artery pressure. Methods Nighty male wistar rats were used to optimize the method of detection of pulmonary arte-rial pressure. Three catheter namely PE50, PU I, and PU II were used for choosing the best intubation. The new technology of right catheterization was established and used for the research of pulmonary arterial hypertension. Results The PU I catheter was obviously better than PE50 and PU II catheter in the success rate and measurement time ( P <0. 05 ) . The method of right heart catheter guided intubation was significantly superior to the traditional right heart direct intubation (P<0. 05 or P<0. 01). After improving the right catheterization, the detection of hemo-dynamic indexes in PAH-model rat was successful with regular pressure curve and reliable experimental data. Conclusions The right heart catheter guided intubation method has a high suc-cess rate and it can detect the pulmonary artery pressure quick-ly, easily, and can help other researchers to complete experi-ment as efficiently as possible.

Development and Application of Metabonomics in Forensic Toxicology / 法医学杂志

Metabonom ics is an im portant branch of system biology follow ing the developm ent of ge-nom ics, transcriptom ics and proteom ics. It can perform high-throughput detection and data processing with multiple param eters, potentially enabling the identification and quantification of all sm all m etabolites in a biological system . It can be used to provide com prehensive inform ation on the toxicity effects, toxi-cological mechanisms and biom arkers, sensitively finding the unusual m etabolic changes caused by poi-son. This article mainly review s application of m etabonom ics in toxicological studies of abused drugs, pesticides, poisonous plants and poisonous anim als, and also illustrates the new direction of forensic toxi-cology research.

Basic research and clinical translation of precision medicine / 中国药理学通报

Since the late twentieth century,the progress of ge-nomics,proteomics and other areas has promoted modern medi-cine from the era of evidence-based medicine to the era of preci-sion medicine.With the studies of the relationships between ge-nomic information and clinical phenotypes,precise medicine,to improve clinical outcomes and minimize unnecessary side effects,develops and implements individualized medicine ac-cording to patients’personalized specificities through pharma-cogenomics.Basic research and clinical translation of precision medicine do help to improve the health system of our country.

Pharmacokinetic study on cimifugin in rats / 中国药理学通报

Aim To establish a HPLC method for de-termining cimifugin in rat plasma and investigate the pharmacokinetic characteristics of cimifugin in rats. Methods The plasma concentration of cimifugin was detected by HPLC in acetonitrile protein precipitation method after intragastric administration of cimifugin. The pharmacokinetic parameters were calculated by the procedure of DAS 2 . 1 . Results The regression equa-tion of cimifugin in rats plasma was Y =0. 187 X -0. 0236 (R2 =0. 998 2),which shows a good linear re-lation at 1 - 70 mg · L-1 . The concentration-time curves conformed to two-compartment model. The main pharmacokinetic parameters of Tmax, Cmax, T1/2α, T1/2z, Vd ,AUC(0-t) and AUC(0-∞) were 80 min, 10. 359 mg ·L-1 , 93. 131 min, 2. 179 L · kg-1 , 1946. 085 mg ·L-1 · min, 2138. 57 mg · L-1 · min, respectively. Conclusions We established a HPLC method to de-termine the concentration of cimifugin in plasma. The method is so highly specified and sensitive that it can be used in quantitative analysis in vivo on cimifugin. Cimifugin can be rapidly absorbed, reach the highest concentration and produce effect.