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1.
Article in Chinese | WPRIM | ID: wpr-888078

ABSTRACT

Excitatory toxicity(ET) is an important factor of neuropathic pain(NPP) induced by central sensitization(CS), and the association of pannexin-1(Panx1)-Src-N-methyl-D-aspartate receptor subunit 2 B(NMDAR-2 B) is an important new pathway for ET to initiate CS. The present study confirmed whether the central analgesic effect of Chuanxiong Rhizoma extract(CRE) was achieved through the synchronous regulation of the brain and spinal pathways of Panx1-Src-NMDAR-2 B. In this study, dynamic and simulta-neo-us microdialysis of the brain and spinal cord in vivo combined with behavioristics, high performance liquid chromatography(HPLC)-fluorescence detection, microdialysis analysis(ISCUS~(flex)), ultrasensitive multifactorial electrochemiluminescence immunoassay, ELISA, and Western blot was employed to investigate the protein expression of NMDAR-2 B, Src, and Panx1, extracellular excitatory amino acids, cytokines, energy metabolites, and substance P in spinal dorsal horn(SDH) and anterior cingulate cortex(ACC) after CRE intervention with the rat model of spared sciatic nerve injury(SNI) as the experimental tool. Compared with the sham group, the SNI group exhibited diminished mechanical withdrawal threshold(MWT)(P<0.01), increased cold spray scores(P<0.01), glutamate(Glu), D-serine(D-Ser), and glycine(Gly) in extracellular fluids of ACC, and Glu, D-Ser, interleukin-1β(IL-1β), and lactic acid(Lac) in extracellular fluids of SDH(P<0.05), dwindled tumor necrosis factor(TNF-α)(P<0.05), and elevated protein levels of NMDAR-2 B, Src, and Panx1 in ACC(P<0.05). Compared with the SNI model rats, high-and medium-dose CRE(CRE-H/M) could potentiate the analgesic activity as revealed by the MWT test(P<0.05) and CRE-M enabled the decrease in cold spray scores(P<0.05). CRE-H/M could inhibit the levels of Glu, D-Ser and Gly in the extracellular fluids of ACC(P<0.05), and the levels of Glu in the extracellular fluids of SDH(P<0.05) in SNI rats. CRE-M significantly increased the levels of glucose(Gluc), Lac, interferon-gamma(IFN-γ), keratinocyte chemoattractant/human growth-regulated oncogenes(KC/GRO), and IL-4 in extracellular fluids of SDH in SNI rats(P<0.05). CRE-H/M/L could also inhibit the levels of NMDAR-2 B, Src and Panx1 in ACC and SDH in SNI rats(P<0.05). The central analgesic effect of CRE is presumedly related to the inhibited release of excitatory amino acid transmitters(Glu, D-Ser and Gly) in ACC and SDH of SNI rats, decreased protein expression of NMDAR-2 B, Src and Panx1 in the two regions, and the regulation of the Panx1-Src-NMDAR-2 B pathway in the spinal cord and brain. The above findings partially clarified the scientific basis of clinical analgesic effect of Chuanxiong Rhizoma.


Subject(s)
Animals , Central Nervous System Sensitization , Neuralgia/drug therapy , Rats , Rats, Sprague-Dawley , Receptors, N-Methyl-D-Aspartate/metabolism , Signal Transduction , Spinal Cord/metabolism
2.
Acta Pharmaceutica Sinica ; (12): 2198-2206, 2020.
Article in Chinese | WPRIM | ID: wpr-825740

ABSTRACT

The treatment plan for chronic pain often proceeds from a single drug to drug combination therapy. Sinomenine and ligustrazine, natural alkaline substances derived from traditional Chinese medicines, are expected to provide a new choice for combination analgesic therapy strategies. Here we establish a microdialysis sampling and HPLC-MS/MS quantification method for sinomenine, ligustrazine, gabapentin, paracetamol, pregabalin and amitriptyline in rat blood and brain extracellular fluid. Blood and brain microdialysis probes were implanted in the jugular vein toward the right atrium and left corpus striatum zone (AP +0.2 mm, ML 3.0 mm, DV 3.5 mm) in rats. The blood and brain microdialysis probes were perfused with citric acid buffer solution and Ringer's solution, respectively. Blood and brain extracellular fluid microdialysate were collected at intervals of 20 min at a perfusion rate of 1.5 μL·min-1, and continuously collected for 24 h after administration. The liquid chromatographic separation used a C18-reversed phase chromatographic column (HSS T3 2.5 μm, 2.1 mm×50 mm), the mobile phase was methanol/water (containing 0.05‰ formic acid), and gradient elution was carried out at a flow rate of 0.3 mL·min-1. Mass spectrometric detection used an electrospray ion source, positive ion mode and multi-reaction monitoring method. The selected quantitative ions for sinomenine, ligustrazine, gabapentin, paracetamol, pregabalin, amitriptyline and internal standard naloxone were 330/181, 137/80, 172/154, 152/110, 160/142, 278/233 and 328/310 respectively. The specificity, linear range, matrix effect, accuracy, precision, stability and probe recovery were investigated and confirmed to be suitable for the determination of the above drugs in rat blood and brain extracellular fluid microdialysate. The calculated in vivo recovery of microdialysis probes ranged from 19.38% to 25.88%. After intravenous administration of sinomenine (50 mg·kg-1), ligustrazine (50 mg·kg-1), gabapentin (50 mg·kg-1), paracetamol (50 mg·kg-1), pregabalin (50 mg·kg-1) and amitriptyline (40 mg·kg-1) to rats, the peak concentration in the blood microdialysate was in the range of 0.2-10 μg·mL-1. Drug concentrations could also be detected in brain extracellular fluid microdialysate, however with lower levels (peak concentration: 0.1-6 μg·mL-1) than those of blood microdialysates at each time point. In conclusion, this method can be applied to microdialysis sampling and quantification of sinomenine, ligustrazine, gabapentin, paracetamol, pregabalin and amitriptyline in rats. The method will promote research in identifying herb-drug pharmacokinetic interactions, as well as safety concerns in combination-therapy strategies.

3.
Acta Pharmaceutica Sinica ; (12): 2308-2315, 2019.
Article in Chinese | WPRIM | ID: wpr-780338

ABSTRACT

Chuanxiong Qingfengteng mixture (CQM) is an analgesic developed based on clinical evidence and traditional Chinese medicine theory, which majorly consists of Ligusticum chuanxiong and Sinomenium acutum extracts. The current study aims to establish an UHPLC-UV method for the quantification of sinomenine and ligustrazine after CQM administration to rats, mice and cells, and to study the brain permeability of sinomenine and ligustrazine. The selectivity, linearity, accuracy, precision and stability of the established method demonstrated that it was suitable for the determination of sinomenine and ligustrazine in biological samples such as plasma, brain tissue and cellular fluid. After CQM was intravenously administered to rats and mice, both sinomenine and ligustrazine were detected in the brain from 5 min-2 h. The CSF/plasma partition coefficients (Kp, C/P) of each component were higher than those of brain tissue/plasma partition coefficient (Kp, B/P), the Kp, C/P and Kp, B/P of ligustrazine were higher than those of sinomenine. The concentrations between CSF and brain tissue were strongly correlated (Pearson's R>0.86, P<0.001). The unbound fraction in plasma of sinomenine and ligustrazine was 78.92% and 34.07%, respectively. The plasma protein binding rates displayed concentration-independent behavior within their respective in vivo concentration ranges. After CQM co-cultured with Caco-2 cell monolayers, the apparent permeability coefficient (Papp) of sinomenine and ligustrazine were 1.30×10-6 and 3.64×10-6 cm·s-1, respectively, following into the range of the intermediate and high permeability compounds. The efflux ratio (Papp(basolateral→apical)/Papp(apical→basolateral)) of sinomenine and ligustrazine were 0.67 and 0.85, respectively. When combined with P-glycoprotein inhibitor, the Papp of each component did not increase. In conclusion, the UHPLC-UV assay was successfully applied for the brain permeability study of CQM, the components of CQM can be quickly distributed to cerebrospinal fluid and pass through the blood-brain barrier. The brain permeability of ligustrazine is higher than that of sinomenine. The transmembrane transport of sinomenine and ligustrazine may not be affected by efflux transporters. All animal care and use complied with the Regulations for the Administration of Affairs Concerning Experimental Animals approved by the State Council of the People's Republic of China. All animal studies were implemented according to protocols, which were reviewed and approved by the Institutional Animal Care and Use Committee at Experimental Research Center, China Academy of Chinese Medical Sciences.

4.
Article in Chinese | WPRIM | ID: wpr-696230

ABSTRACT

Objective To investigate the internal quality control(IQC) of hemoglobin A2 (HbA2) and hemoglobin F (HbF) from 2014 to 2017 in China.Methods The results of IQC were collected from the laboratories which participated in external quality assessment (EQA) of National Center for Clinical Laboratories (NCCL) from 2014 to 2017,then the coefficient of variation (CV) was compared with 1/3TEa (6.67 %),1/4TEa (5 %).The proportion of laboratories meeting criteria were calculated to analyze IQC of HbA2 and HbF in China.The data were grouped based on the instruments used in laboratories,the acceptable rates of CVs of HbA2 and HbF in each group under two criteria in 2017 were calculated,respectively.Results In HbA2,more than 84% of participant laboratories met 1/3TEa criteria and 70.83% ~84.47% of laboratories met 1/ 4TEa criteria.In HbF except for 2015,the more than 80% laboratories whose month and cumulative CVs met 1/3TEa and 1/4TEa criteria accounted for 68.42 % ~ 85.07 %,respectively.Under 1/3TEa and 1/4TEa criteria,sebia capillarys 2 instru ment and fully automatic hemoglobin analyzer bole Variant Ⅱ instrument group the acceptable rates of CVs above 85%,showed good precision for HbA2 and HbF detection.Conclusion At present,the precision level of HbA2 and HbF need to be further improved in laboratories of China,especially HbF.Laboratory should continue to strengthen the internal quality control,establish strict internal quality system to improve detection capacity.

5.
Article in Chinese | WPRIM | ID: wpr-696229

ABSTRACT

Objective To investigate the current status of the coefficients variations (CVs) of internal quality control (IQC) data for serum procalcitonin in China.Methods Data had been collected by Web based submission system,the laboratories which enrolled in 2017 serum procalcitonin external quality assessment (EQA) program had attended.The data had includ ed:the CVs of two levels of IQC materials (level 1 and 2) in March of 2017 and long-term cumulative in control data.Mi crosoft Office Excel 2007 was used to analyze and process the data,the acceptable rates of CVs were calculated based on the 1/3TEa and 1/4TEa standards.The instruments which was used in laboratory internal quality control system of EQA,were grouped and counted,the acceptable rates of each group was calculated according to two evaluation standards.According to the laboratory detecting system was matched or not,to calculate the proportion of laboratories,and to adapt to the two standards.Results The acceptable rates of the same standards were close and the acceptable rates of level 2 were relatively higher.After grouping according to the instruments,the acceptable rates of each group were uneven.According to the labo ratory detecting system was matched or not,the acceptable rates of the matching system were much more higher.Conclusion To strengthen internal quality control system,and to improve the detection quality level much further.Laboratory should pay more attention to the mission of internal quality control,in order to ensure the reliability of test results.

6.
Journal of Modern Laboratory Medicine ; (4): 134-138,142, 2018.
Article in Chinese | WPRIM | ID: wpr-696228

ABSTRACT

Objective To analyze the status of quality indicators(QI) on specimen acceptability and establish preliminary qual ity specification.Methods Web based External Quality Assessment system was used to collect data of laboratories partici pated in "Medical quality control indicators in clinical laboratory" from 2015 to 2017,including once in 2015 and 2017 and twice in 2016.Rate and sigma scales were used to evaluate incorrect sample type,incorrect sample container,incorrect fill level and anticoagulant sample clotted.The 25th percentile (P25) and 75th percentile (P75) of the distribution of each QI were employed to establish the high,medium and low specification.Results 5 346,7 593,5 950 and 6 874 laboratories sub mitted the survey results respectively.The P50 of biochemistry (except incorrect fill level),immunology and microbiology reach to 6σ.The P50 of clinical laboratory is 4 to 6σ except for incorrect sample container.There is no significant change of the continuous survey results.Based on results in 2017 to establish the quality specification,the P25 and P75 of the four QIs is 0 and 0.084 4 %,0 and 0.047 6 %,0 and 0.114 2 %,0 and 0.078 4 %,respectively.Conclusion According to the results of the survey,most laboratories had a faire performance in biochemistry,immunology and microbiology,and clinical laboratory needs to be strengthened.Laboratories should strengthen the laboratory information system construction to ensure the actual and reliable data collection,and make a long time monitoring to achieve a better quality.

7.
Article in Chinese | WPRIM | ID: wpr-696191

ABSTRACT

Glucose meters often have similar performance when compared by error grid analysis.This is one reason that other statistics such as mean absolute relative deviation (MARD) are used to further differentiate performance.The problem with MARD is that too much information is lost.But additional information is available within the A zone of an error grid by using the Taguchi loss function.Applying the Taguchi loss function gives each glucose meter difference from reference a value ranging from 0 (no error) to 1 (error reaches the A zone limit).Values are averaged over all data which provides an indication of risk of an incorrect medical decision.This allows one to differentiate glucose meter performance for the common case where meters have a high percentage of values in the A zone and no values beyond the B zone.Examples are provided using simulated data.

8.
Journal of Modern Laboratory Medicine ; (4): 154-157,160, 2018.
Article in Chinese | WPRIM | ID: wpr-696190

ABSTRACT

Objective To analyzed the differences between the status of internal quality control and industry standard of different platforms in second trimester prenatal screening,so as to provide recommendations to improve prenatal screening quality control.Methods Collected the coefficient of variation in control and accumulated coefficient of variation in control of 468 prenatal screening laboratory in September 2016,and the proportion of the laboratory that meet the industry standard and analyze the proportion of different platforms that meet the manufacturers standards and industry standards.Results For AFP,34.9 % ~ 100 % of the laboratory meeted the manufacturers standards and 25 % ~ 78 % meet the industry standards;for total HCG,59.2% ~81.6% of the laboratory meeted the manufacturers standards and 24.5 % ~30.6% meeted the industry standards,for free β-hCG,38.9 % ~ 100 % of the laboratory meeted the manufacturers standards and 27.3 % ~ 63.0 % meeted the industry standards,for β-hCG,14.3%~68.8% of the laboratory meeted the manufacturers standards and 14.3%~61.3 % meeted the industry standards.For uE3,19.7 % ~ 100% of the laboratory meeted the manufacturers standards and 11.1~54.8% meeted the industry standards.Conclusion Failure to meet the industry standards happens to all platforms.Prenatal screening laboratories need to pay attention to internal quality control to ensure the performance of the platforms meet the quality requirements of prenatal screening.

9.
Article in Chinese | WPRIM | ID: wpr-696150

ABSTRACT

In the last few years much progress has been made in raising the awareness of laboratory medicine professionals a bout the effectiveness of quality indicators (QIs) in monitoring,and improving upon,performances in the extra-analytical phases of the total testing process (TTP).An effective system for management of QIs includes the implementation of an internal assessment system and participation in inter-laboratory comparison.A well-designed internal assessment system allows the identification of critical activities and their systematic monitoring.Active participation in inter-laboratory comparison provides information on the performance level of one laboratory with respect to that of other participating laboratories.In order to guarantee the use of appropriate QIs and facilitate their implementation,many laboratories have adopted the Model of Quality Indicators (MQI) proposed by Working Group "Laboratory Errors and Patient Safety" (WG-LEPS) of IFCC,since 2008,which is the result of international consensus and continuous experimentation,and updating to meet new,con stantly emerging needs.Data from participating laboratories are collected monthly and reports describing the statistical results and evaluating laboratory data,utilizing the Six Sigma metric,issued regularly.Although the results demonstrate that the processes need to be improved upon,overall the comparison with data collected in 2014 shows a general stability of quality levels and that an improvement has been achieved over time for some activities.The continuous monitoring of QI dataallows identification all possible improvements,thus highlighting the value of participation in the inter-laboratory program proposed by WGLEPS.The active participation of numerous laboratories will guarantee an ever more significant State-of-the-Art,promote the reduction of errors and improve quality of the TTP,especially the extra-analytical quality,thus guaranteeing patient safety.

10.
Chinese Journal of Zoonoses ; (12): 920-922, 2017.
Article in Chinese | WPRIM | ID: wpr-667672

ABSTRACT

We explored the effect of therapy with bacteriophages for pandrug resistant Acinetobacter baumannii infections.Kunming mice (Specific Pathogen Free) were divided into two groups:experimental group (severe infection caused by pandrug resistant Acinetobacter baumannii) and the control group.The mice of experimental group were treated with Phages AB46 while the mice of control group were treated with broth.The survival rate was compared with statistical method and the spleen bacteria count was analyzed.Results showed that there were statistical difference between the experimental group and control group of Pandrug resistant Acinetobacter baumannii groups of 1 ∶ 10 dilution,P=0.020<0.05.There were no statistical difference between each two groups of 1 ∶ 2 (P=0.650) and 1 ∶ 5 (P=0.170) dilution,both were>0.05.There were no dead mice in groups of 1 ∶ 50 dilution with statistical difference of spleen bacteria count,P=0.026.Therapy with phages was an ef fective method to control infection caused by Pandrug resistant Acinetobacter baumannii which could increase the survival rate and decrease spleen bacteria count of the mice with light infection.

11.
Article in Chinese | WPRIM | ID: wpr-693320

ABSTRACT

Epilepsy,especially the status epilepticus(SE),is a kind of common disease which is seriously dangerous for peo-ple′s health. At present,many researchers are focusing on how the epilepsy seizures happen and maintain,but know little about how it stops. It was found that appropriate cell acidification played an important role in patients to slow down or inhibit epilepsy-like seizures in the early 20th century. Recently,more and more researches have confirmed that cell acidification can induce the termination of epi-leptic seizure caused by disbalance of inhibitory and excitatory transmitters of nerve,opening of acid-sensing ion channels and so on. Therefore,these will likely become the new direction to explore new drugs or methods for epileptic treatment in the future.

12.
Article in Chinese | WPRIM | ID: wpr-338207

ABSTRACT

Stroke is an acute cerebrovascular disease with high morbidity, disability and mortality. The prevention and treatment conditions for stroke is severe all over the world. Antiplatelet aggregation is an effective treatment. Platelet activation factor (PAF) is another important medium in mediating platelet aggregation, which plays an important role in the pathogenesis of stroke. In recent years, PAF receptor antagonists have attracted international attention in the field of stroke prevention and treatment. In this review, we would summarize the classification, mechanism and drug characteristics of PAF receptor antagonists in order to provide the valuable guidance and direction for clinical medicine and research.

13.
Article in Chinese | WPRIM | ID: wpr-275469

ABSTRACT

This study aimed to analyze the analgesic effect and related central mechanisms of CQ prescription on cancer invasion induced mirror image pain (CIIMIP)in model mice.In the study, male BALB/c mice were randomly divided into normal group, operation control group (injected with 0.2 mL inactivated S180 sarcoma cell sap), model group (injected with 0.2 mL S180 sarcoma cell sap on the right leg near the greater trochanter of femur) and CQ prescription low dose group (intraperitoneally injected with CQ prescription 100 mg•kg⁻¹ on the basis of model mice), CQ prescription middle dose group (intraperitoneally injected with CQ prescription 150 mg•kg⁻¹ on the basis of model mice), and CQ prescription high dose group (intraperitoneally injected with CQ prescription 200 mg•kg⁻¹ on the basis of model mice). Mechanical withdraw threshold (MWT) of the mirror image lateral hind paws were evaluated by Von Frey hairs before modeling and after surgery. The levels of glutamate (Glu), gamma aminobutyric acid (GABA), glycine (Gly), and taurine (Tau) in the L3-L5 spinal cord were measured by the high performance liquid chromatography-fluorescence detector (HPLC-FLD); AimPlex detection technology with multiple factors was used to detect the levels of regulated on activation in normal T-cell expressed and secreted (RANTES), monocyte chemoattractant protein (MCP-3) in the L3-L5 spinal cord. Then we observed the influence of GABAa receptor antagonist (Bicuculline) on analgesic effect of CQ prescription.The results indicated that CQ prescription could remarkably increase MWT of model mice(P<0.01, P<0.05), decrease the level of Glu(P<0.01, P<0.05), improve the levels of GABA, Gly, Tau(P<0.01, P<0.05), lower the ratio of Glu/GABA(P<0.01, P<0.05), and reduce the levels of RANTES, MCP-3(P<0.05) in the L3-L5 spinal cord, and GABAa receptor antagonist significantly blocked the analgesic effect of CQ prescription at two time points(P<0.05).This study showed that CQ prescription had significant analgesic effect on CIIMIP model mice, and its mechanism was associated with regulating the balance between excitability amino acid(EAA) and inhibitory amino acid (IAA) transmitters in central nervous system, partially activating GABAa receptor, and reducing the release of RANTES and MCP-3 in the spinal cord.

14.
Article in Chinese | WPRIM | ID: wpr-286375

ABSTRACT

In recent 10 years, clinical trials of Chinese medicine and pharmacy (cMP) at clinicalTrials.gov.(USA) are gradually increasing. In order to analyze features of CMP clinical register, ClinicalTrials.gov register database were comprehensively retrieved in this study. Included clinical trials were input one item after another using EXCEL. A final of 348 CMP clinical trials were included. Results showed that China occupied the first place in CMP clinical register, followed by USA. CMP clinical trials, sponsored mainly by colleges/universities and hospitals, mostly covered interventional studies on evaluating safety/effectiveness of CMP. The proportions of studies, sponsored by mainland China and companies, recruitment trials and multi-center clinical trials in interventional trials were increasing. The proportions of studies sponsored by Hong Kong and Taiwan, research completed trials, unclear research status, phase III clinical trials, and published research trials in interventional trials were decreasing. Published ratios of CMP clinical trials were quite low. There were more missing types and higher proportions in trial register information.


Subject(s)
Biomedical Research , China , Clinical Trials as Topic , Databases, Factual , Humans , Medicine, Chinese Traditional , United States
15.
Article in Chinese | WPRIM | ID: wpr-312986

ABSTRACT

International clinical trials register is one of the global measures to realize transparency in clinical trials and also one of a powerful measure to improve the quality of clinical trials. Many scholars studying the quality of TCM clinical trials find that they are poor in quality and lack transparency. Furthermore, they find that TCM clinical trial registry has many problems. We must base on the successful experiences of WHO and international clinical trial registry to establish technical specifications for registry of traditional Chinese medicine clinical study of their own. Then, it can effectively improve the overall level of TCM clinical studies. We have suggested some concrete and feasible measures to establish technical specifications for registry of traditional Chinese medicine clinical study of their own based on the problems of TCM clinical trial registry.


Subject(s)
Biomedical Research , Humans , Medicine, Chinese Traditional , Reference Standards , Registries
16.
Article in Chinese | WPRIM | ID: wpr-287560

ABSTRACT

<p><b>OBJECTIVE</b>To observe the effect of synchronous perfusion of specific respiratory chain complex IV inhibitor sodium azide (NaN3) in brain on rat ventromedial prefrontal cortex (mPFC) and acetylcholine (ACh) and choline (Ch) contents in hippocampal extra-cellular fluid, and establish the AD rat model induced by mitochondrial acute injury.</p><p><b>METHOD</b>The synchronous dual-probe dual-channel brain microdialysis sampling technology was applied to synchronously perfuse modified Ringer's solution containing NaN3 (50 micro mol L-1) and neostigmine (2 micro mol L-1) into mPFC and hippocampus of conscious, freely moving normal rats, and continuously collect dialysates from different encephalic areas. Dynamic contents of ACh and Ch were determined by high performance liquid chromatography-post-column immobilized enzyme reactor-electrochemical process.</p><p><b>RESULT</b>ACh and Ch contents in mPFC extracellular fluid of normal rats were higher than that in hippocampus. During the process of perfusion, NaN3 could significantly reduce ACh in mPFC/hippocampal extra-cellular fluid, but remarkably increase Ch, and constantly inhibit the recovery of ACh and Ch contents in mPFC/hippocampus.</p><p><b>CONCLUSION</b>The synchronous perfusion of NaN3in rat mPFC and hippocampus can injure functions of the cholinergic nerve projection area, and cause the acute AD model with ACh and Ch metabolic disorders. This model can be used in pathogenetic and pharmacological studies.</p>


Subject(s)
Acetylcholine , Metabolism , Animals , Choline , Metabolism , Extracellular Fluid , Metabolism , Hippocampus , Cell Biology , Male , Neurotransmitter Agents , Metabolism , Perfusion , Prefrontal Cortex , Cell Biology , Rats , Rats, Sprague-Dawley , Sodium Azide , Pharmacology , Time Factors
17.
Chinese Journal of Cardiology ; (12): 199-204, 2013.
Article in Chinese | WPRIM | ID: wpr-292001

ABSTRACT

<p><b>OBJECTIVE</b>To assess the feasibility and accuracy of CT first-pass myocardial perfusion imaging (CT first-pass MPI) at rest for diagnosis of myocardial ischemia. Results of adenosine-induced myocardial perfusion scintigraphy (MPS) were used as gold standard.</p><p><b>METHODS</b>Twenty-two patients with suspected or diagnosed coronary artery disease (CAD) were included and CT coronary angiography (CTCA) and MPS were performed within 2 weeks. CT first-pass MPI detected myocardial ischemia results through analyzing the raw date of CTCA were compared with MPS results.</p><p><b>RESULTS</b>The sensibility, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of CT first-pass MPI at rest for detecting myocardial ischemia were 92% (12/13), 78% (7/9), 86% (12/14), 88% (7/8) and 86% (19/22), respectively.</p><p><b>CONCLUSION</b>CT first-pass MPI at rest could detect myocardial ischemia with an accuracy similar to that of MPS.</p>


Subject(s)
Adult , Aged , Aged, 80 and over , Coronary Angiography , Methods , Feasibility Studies , Female , Humans , Male , Middle Aged , Myocardial Ischemia , Diagnostic Imaging , Predictive Value of Tests , Sensitivity and Specificity , Tomography, X-Ray Computed , Methods
18.
Article in Chinese | WPRIM | ID: wpr-291371

ABSTRACT

Records of 2 325 patients with CHD were extracted from 20 hostpial information systems, who were divided into two groups, one group has 768 patients using Dengzhan Xixin, the other group has 1 557 patients without using Dengzhan Xixin. Using generalized boosted models (GBM) with propensity scores to balance confounding factors and using three Logistic regressions to analysis the cure rates of coronary heart disease. The results is that 72 knowing confounding factors between two groups, such as: age, admission condition, dying days, regression coefficients of three Logistic regressions were negative (P < 0.05), statistically, the result of using Dengzhan Xixin injection to cure coronary heart disease is significantly higher than do not using Dengzhan Xixin injection. Propensity score could be a good method to balance confounding factors in a retrospective data analysis. However it is not a prospective research, the information from this study should be carefully referred to.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Coronary Disease , Drug Therapy , Drugs, Chinese Herbal , Female , Hospital Information Systems , Humans , Logistic Models , Male , Middle Aged , Outcome Assessment, Health Care , Pragmatic Clinical Trials as Topic , Propensity Score , Treatment Outcome , Young Adult
19.
Article in Chinese | WPRIM | ID: wpr-318650

ABSTRACT

<p><b>OBJECTIVE</b>To observe the analgesic effect of sinomenine on the neuropathic pain rat model induced by SSNI, and discuss its impact on monoamine neurotransmitters in striatal extracellular fluid.</p><p><b>METHOD</b>Male SD rats were randomly divided into the sham operation group, the SSNI model group, the gabapentin group (100 mg x kg(-1)), the sinomenine high dose group (40 mg x kg(-1)) and the sinomenine low dose group (20 mg x kg(-1)). Mechanical hyperalgesia and cold pain sensitivity were evaluated by Von Frey hairs and cold spray. Striatum was sampled by microdialysis. High performance liquid chromatography-electrochemical detector (HPLC-ECD) were used to detect the content of such neurotransmitters as monoamine neurotransmitters noradrenaline (NE), dopamine (DA), 5-hydroxy tryptamine (5-HT) and their metabolites dihydroxyphenylacetic phenylacetic acid (DOPAC) and 5-hydroxyindoleacetic acid (5-HIAA).</p><p><b>RESULT</b>SSNI model rats showed significant improvement in mechanical withdrawal threshold and cold pain sensitivity, significant decrease in intracerebral NE and notable increase in DA, 5-HT and their metabolites. Compared with the model group, the sinomenine high dose group showed significant increase in mechanical withdrawal threshold at 60, 90, 180 and 240 min after abdominal administration (P < 0.01), significant decrease in cold pain sensitivity score during 30-240 min (P < 0.05). Sinomenine can significantly up-regulated NE content in striatal extracellular fluid during 45-135 min (P < 0.05), remarkably reduce DA content and DOPAC at 45, 75 and 135 min (P < 0.05), 5-HT content during 45-135 min, DOPAC during 75-165 min (P < 0.05), and 5-HIAA during 45-135 min (P < 0.05).</p><p><b>CONCLUSION</b>Sinomenine has the intervention effect on neuropathic pain in SSNI model rats. Its mechanism may be related to disorder of monoamine neurotransmitters in striatal extracellular fluid.</p>


Subject(s)
Analgesics , Pharmacology , Animals , Biogenic Monoamines , Metabolism , Disease Models, Animal , Extracellular Fluid , Male , Morphinans , Pharmacology , Neostriatum , Pathology , Neurotransmitter Agents , Metabolism , Rats , Rats, Sprague-Dawley , Sciatic Nerve , Wounds and Injuries , Metabolism , Pathology
20.
Article in Chinese | WPRIM | ID: wpr-238566

ABSTRACT

Spontaneous reporting system (SRS) is currently a basic method to monitor and find adverse drug reactions (ADR) signals used worldwide. This method can promptly and effectively discover ADR signals and is of great significance to effectively prevent and avoid ADRs. Parenterally administered salvianolate has the functions of activating blood circulation and removing stasis. It is mainly used in the treatment of stable angina pectoris. As the drug is widely used clinically and ADRs are increasingly reported promptly, ADR information in the national ADR monitoring center's SRS database has also increased. How to quickly and effectively identify suspicious ADRs is a major concern. This study uses BCPNN and PRR to detect early warning signals. S739 ADR case reports were identified. There were 106 types, 1 310 events, and 24 serious ADR cases ( 3.25% of 739 case reports) There wre no deaths. The ten most frequent ADRs were: rash, dizziness, itch, headache, chills and breath, nausea, palpitation, anaphylactic reaction and hot. The drugs early warning signs were dizziness, headache, nausea, itchiness and rash estimated using PRR. Early warning signs based on BCPNN were dizziness and headache. The ADRs of dizziness and headache are early warning signals associated with the nervous system.


Subject(s)
Adolescent , Adult , Adverse Drug Reaction Reporting Systems , Aged , Aged, 80 and over , Child , Child, Preschool , China , Epidemiology , Databases, Factual , Drug-Related Side Effects and Adverse Reactions , Epidemiology , Female , Humans , Infant , Infusions, Parenteral , Male , Middle Aged , Pharmacovigilance , Plant Extracts , Young Adult
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