ABSTRACT
OBJECTIVE@#To investigate the protective effects of Shexiang Tongxin Dropping Pill (, STDP) following sodium laurate-induced coronary microembolization (CME) in rats.@*METHODS@#Forty rats were divided into 4 groups: the control (sham) group, CME group, low-dose STDP pretreatment group (20 mg·kg@*RESULTS@#The rats in the CME group showed a significant increase in the fibrinogen-like protein 2 expression level and mitochondrial dysfunction and a decrease in the expression level of antioxidant biomarkers (superoxide dismutase and catalase, P<0.01 for all). In contrast, the rats in the low- and high-dose STDP pretreatment groups showed a significant decrease in coronary microthrombi (P<0.05); moreover, STDP restored the antioxidant-related protein activities and mitochondrial function, inhibited mPTP opening, decreased AKT-Ser473 phosphorylation, and increased GSK3β-Ser9 phosphorylation (P<0.05 or P<0.01).@*CONCLUSION@#STDP may be useful for treatment of CME, possibly via regulation of mPTP opening and AKT/GSK3β phosphorylation.
ABSTRACT
Objective::Astragalus membranaceus var. mongholicus and A. membranaceus are medicinal Astragalus, which are closely related and similar in composition, but with unclear medicinal value. Water-soluble protein profiles for A. membranaceus var. mongholicus and A. membranaceus were established to explore the differences between the two kinds of Astragalus Radix. Method::The water-soluble protein components were obtained through water ultrasonic extraction and acetone precipitation. After digested with trypsin, the obtained peptides were analyzed by nano ESI-LC-MS/MS method. Proteome Discovery 1.4 software was used to identify the proteins by comparing with the legume protein database, and the different expression water-soluble proteins were analyzed by the label-free quantitative software SIEVE. Finally, relevant information for common expression proteins, including classification, molecular function, involved biological process and signaling pathway, were analyzed by bioinformatics. Result::There were 920 and 717 specific proteins identified for A. membranaceus var. mongholicus and A. membranaceus, respectively. Totally 472 proteins were found to be co-expressed, in which 21 were differentially expressed, such as PR-10 protein, NDK-1 protein, glutelin A2, and phospholipase D. There were 14 highly expressed proteins in A. membranaceus var. mongholicus and 7 highly expressed proteins in A. membranaceus. Conclusion::There are significant differences in water-soluble protein profiles for two kinds of Astragalus Radix. Specific proteins, differentially expressed proteins and common expressed proteins can provide references for the identification of A. membranaceus var. mongholicus and A. membranaceus. It also can be used to define pharmacological mechanisms and search for drug action targets.
ABSTRACT
PURPOSE: Epirubicin is one of the most effective drugs against osteosarcoma. miR-1301 is involved in the occurrence and development of osteosarcoma. Whether miR-1301 is responsible for the chemosensitivity of osteosarcoma cells to epirubicin remains largely unknown. MATERIALS AND METHODS: U2OS and SAOS-2 cells were treated with various concentrations of epirubicin. Flow cytometry was employed to evaluate cell apoptotic rate. Cell proliferation was measured by Cell Counting Kit-8 assay. Western blot and quantitative real-time polymerase chain reaction were utilized to detect the expressions of B-cell lymphoma-2 (Bcl-2), Bcl-2 assaciated X protein (Bax), cleaved-caspase-3, cleaved-poly (ADP-ribose) polymerases (PARP1), TP53-regulated inhibitor of apoptosis 1 (TRIAP1), and microRNA-1301 (miR-1301). The relationship between miR-1301 and TRIAP1 was determined by luciferase reporter assay. RESULTS: Epirubicin inhibited proliferation in a dose-dependent manner, induced apoptosis, decreased the expression of Bcl-2, and increased the expressions of Bax, cleaved-caspase-3, and cleaved-PARP1 in osteosarcoma cells. miR-1301 was downregulated in U2OS and SAOS-2 cells. Importantly, epirubicin significantly increased the levels of miR-1301. Overexpression of miR-1301 suppressed proliferation and promoted apoptosis. Interestingly, those effects were enhanced by epirubicin. In contrast, miR-1301 depletion attenuated the epirubicin-mediated anti-osteosarcoma effect. miR-1301 negatively regulated the expression of TRIAP1 in U2OS and SAOS-2 cells. Furthermore, epirubicin inhibited the mRNA and protein levels of TRIAP1 by upregulating miR-1301 levels. Epirubicin suppressed cell proliferation by downregulating TRIAP1. CONCLUSION: miR-1301 was implicated in the chemosensitivity of osteosarcoma to epirubicin by modulating TRIAP1.
Subject(s)
Apoptosis , B-Lymphocytes , Blotting, Western , Cell Count , Cell Proliferation , Epirubicin , Flow Cytometry , Luciferases , Osteosarcoma , Real-Time Polymerase Chain Reaction , RNA, MessengerABSTRACT
Sijunzi Decoction polysaccharide (SJZDP) is the active component contributing to the function of intestinal immunoregulation, which is the highest content in Sijunzi Decoction. SJZDP can activate immunological response in peyer’s patch, mesenteric lymph nodes, intestinal epithelial cells and intestinal intraepithelial lymphocytes, but the mechanism is unknown. The reported mechanisms of SJZDP’s intestinal immunoregulation activity are related to its regulation of intestinal flora and polyamine signaling pathway. This review is to give a comprehensive summary of information regarding the intestinal immunoregulation of SJZDP and mechanism to help us take the action for reasonable clinical utilization and further researches.
ABSTRACT
Objective:To discuss the mechanism of the high risk factors for hemorrhage by the study on the combination of warfa-rin and magnesium valproate to provide reference for the rational drug selection. Methods:Clinical pharmacists analyzed and adjusted the antiepileptic drug treatment scheme for one patient with cerebral hemorrhage induced by the combination of warfarin and magnesium valproate after mitral valve replacement complicated with epilepsy.The adjusted scheme was as follows:magnesium valproate was sus-pended,0.25 g levetiracetam was used,po,bid,and then the dose was raised to 0.5 g after 14 days for the anti-epileptic treatment. Pharmaceutical care was performed during the whole process of the treatment. Results: After 20-day hospital stay, the international normalized ratio (INR) was controlled within the range of 2.5-3.0,and the patient was discharged in stable conditions with no occur-rence of epilepsy. Conclusion:Levetiracetam has few interactions with warfarin,suggusting the combination is reasonable.
ABSTRACT
Objective To investigate the double-lumen endobronchial intubation-related anatomical factors of respiratory tract in adult patients through measurement of the parameters of glottis and left main bronchus using computed tomography(CT). Methods A total of 206 patients of both sexes, aged 20-80 yr, of American Society of Anesthesiologists physical status Ⅰ-Ⅲ, scheduled for elective surgery, were enrolled in this study.The cervical and thoracic CT images were evaluated.The anteroposterior glottic diame-ter(AP-GD), anteroposterior tracheal diameter(AP-TD), transverse tracheal diameter(Tr-TD), left and right main bronchus diameters(LBD and RBD)and length between glottis and carina(G-TL)were measured.Multiple linear regression analyses were performed to detect the correlations between obtained pa-rameters and between obtained parameters and height. Results AP-GD was(19±3)mm, AP-TD(20± 4)mm, Tr-TD(16.6±2.4)mm, LBD(12.3±2.0)mm, RBD(13.7±2.0)mm and G-TL(126± 11)mm.AP-GD, height, AP-TD and Tr-TD were moderately correlated with LBD(r was 0.522, 0.584, 0.648 and 0.606, respectively, P<0.05).AP-TD +Tr-TD+AP-GD+height served as the inde-pendent variable, the fitting curve was confirmed, and the results showed that AP-TD, Tr-TD and height were the affecting factors for LBD, and the degree of correlation with LBD was as follows from high to low:Tr-TD(b′=0.334), AP-TD(b′=0.323), height(b′=0.243). When AP-GD served as the independ-ent variable and curve fitting was performed, there was no significant difference(P>0.05). Conclusion Tr-TD and AP-GD should be considered besides double-lumen endobronchial intubation-related anatomical factors such as LBD and height in adult patients.
ABSTRACT
OBJECTIVE:To compare pharmacoeconomic and effect of Xueshuantong for injection and Ginkgo leaf extract and dipyridamole injection in the treatment of ischemic stroke. METHODS:Retrospective study was conducted. Totally 404 inpatients with ischemic stroke were divided into Xueshuantong group(271 cases)and ginkgo leaf extract and dipyridamole group(133 cas-es) according to clinical treatment programs. Based on the conventional treatment,patients in 2 groups were given Xueshuantong for injection and ginkgo leaf extract and dipyridamole injection,respectively. The average treatment course was 10 d. Cost-minimi-zation analysis was performed with the determination index of total effective rate. RESULTS:The total effective rates in Xueshuan-tong group and ginkgo leaf extract and dipyridamole group were 90.77% and 88.72%,respectively,the difference was not statisti-cally significant(P>0.05). The costs in 2 groups were 12 860.21 yuan and 13 155.40 yuan,respectively,and xueshuantong group had lower than ginkgo leaf extract and dipyridamde group. CONCLUSIONS:Both Xueshuantong for injection and Ginkgo leaf ex-tract and dipyridamole injection are effective in the treatment of ischemic stroke. However,the economy of Xueshuantong for injec-tion is superior to the other one.
ABSTRACT
Objective To review the occurrence and relevant factors of adverse drug reactions (ADR) of Xueshuantong Injection. Methods Articles and documents in CNKI, VIP, and CBM were searched in June 2014 according to incorporation and exclusion standard. The dose, indication, medicating path and method, solvent, as well as the duration of treatment course and adverse reaction of Xueshuantong Injection were analyzed. The national information system for monitoring ADR was searched to collect adverse reaction cases of Xueshuantong Injection (2004.9-2014.9) reported in Lanzhou region. Cases were analyzed and under analogy with literature results. Results Totally 66 articles involving 4686 patients were included (except for patients of control group). Adverse reactions occurred in 767 patients, including skin damage (402 cases), systemic damage (221 cases), gastrointestinal system damage (75 cases). All of these were relieved after treatment. There were 11 adverse reaction cases of Xueshuantong Injection from Lanzhou region reported in the national information system for monitoring ADR. Conclusion There is a high incidence of adverse reactions in the clinical application of Xueshuantong Injection and ratio of serious adverse events report.
ABSTRACT
Objective:To construct a eukaryotic expression vector of leptin gene,and to transfect it into human placental mesenchy-mal stem cells(HPMSCs)and appraise its expression.Methods:Primers were designed and the leptin gene was obtained by RT-PCR from human adipose tissue.The aimed segments were inserted into the eukaryotic expression vector pIRES2-EGFP,plasmid pIRES2-EGFP-LEP was constructed and identified by restricted enzymatic resection,and then transfected it into HPMSCs by liposome.The ex-pression of leptin in the transfected cells was detected by RT-PCR and Western blotting,the multi-differentiation potential of the cells was indentified.Results:The length of specific fragment was 500 bp,the recombinant plasmid pIRES2-EGFP-LEP presented 5.3 kb and 500 bp bands by restriction enzyme digestion.Leptin gene was expressed in transfected HPMSCs and the transfected HPMSCs maintained multi-directional differentiation potential.Conclusion:The eukaryotic expression vector of leptin can be transfected and ex-pressed in HPMSCs.
ABSTRACT
<p><b>OBJECTIVE</b>To establish three-dimensional finite element model of two-piece post crown to the mandibular first molar residual roots, and analyze the stress distribution characteristic to the residual roots with different adhesives, so as to get the best combination under different conditions.</p><p><b>METHODS</b>The complete mandibular first molar in vitro was selected, the crown was removed along the cemento-enamel junction, then the residual roots were scanned by CT. CT images were imported into a reverse engineering software, and the three-dimensional finite element model of the mandibular first molar residual roots was reconstructed. Titanium two-piece post crown of the mandibular first molar residual roots was produced, then was scanned by CT. The model was reconstructed and assembled by MIMICS. The stress distribution of the root canal and root section under the vertical load and lateral load with different bonding systems were analyzed.</p><p><b>RESULTS</b>Three-dimensional finite element model of two-piece post crown to the mandibular first molar residual roots was established. With the increasing of elastic modulus of the adhesives, the maximum stress within the root canal was also increasing. Elastic modulus of zinc phosphate was the biggest, so the stress within the root canal was the biggest; elastic modulus of Superbond C&B was the smallest, so the stress within the root canal was the smallest. Lateral loading stress was much larger than the vertical load. Under vertical load, the load on the root section was even with different bonding systems. Under lateral load, the maximum stress was much larger than the vertical load. The stress on the root section was minimum using zinc phosphate binder, and the stress on the root section was maximum using Superbond C&B.</p><p><b>CONCLUSION</b>In two-piece post crown restorations, there is significant difference between different adhesives on tooth protection. When the tooth structure of the root canal orifices is weak, in order to avoid the occurrence of splitting, the larger elastic modulus bonding system is the first choice, such as zinc phosphate binder. When the resistance form of the root canal orifices is good enough but the root is too weak, it is suggested that the smaller elastic modulus bonding system is the first choice, such as Superbond C&B.</p>
Subject(s)
Humans , Adhesives , Crowns , Dental Stress Analysis , Finite Element Analysis , Molar , Post and Core Technique , Tooth RootABSTRACT
Nanoporous ZnO was used as a carrier to prepare drug solid dispersion, the mechanism of which to improve the drug dissolution was also studied. Nanoporous ZnO, obtained through chemical deposition method, was used as a carrier to prepare indomethacin and cilostazol solid dispersions by melt-quenching method, separately. The results of scanning electron microscope, surface area analyzer, fourier transform infra-red spectroscopy, differential scanning calorimeter and X-ray diffraction showed that drugs were implanted into nanopores of ZnO by physical adsorption effect and highly dispersed into nanopores of ZnO in amorphous form, moreover, these nanopores strongly inhibited amorphous recrystallization in the condition of 45 degrees C and 75% RH. In addition, the results of the dissolution tested in vitro exhibited that the accumulated dissolutions of indomethacin and cilostazol solid dispersions achieved about 90% within 5 min and approximately 80% within 30 min. It was indicated in this study that the mechanism of drug dissolution improvement was associated with the effects of nanoporous ZnO carrier on increasing drug dispersion, controlling drug in nanopores as amorphous form and inhibiting amorphous recrystallization.
ABSTRACT
Nanoporous ZnO was used as a carrier to prepare drug solid dispersion, the mechanism of which to improve the drug dissolution was also studied. Nanoporous ZnO, obtained through chemical deposition method, was used as a carrier to prepare indomethacin and cilostazol solid dispersions by melt-quenching method, separately. The results of scanning electron microscope, surface area analyzer, fourier transform infra-red spectroscopy, differential scanning calorimeter and X-ray diffraction showed that drugs were implanted into nanopores of ZnO by physical adsorption effect and highly dispersed into nanopores of ZnO in amorphous form, moreover, these nanopores strongly inhibited amorphous recrystallization in the condition of 45 degrees C and 75% RH. In addition, the results of the dissolution tested in vitro exhibited that the accumulated dissolutions of indomethacin and cilostazol solid dispersions achieved about 90% within 5 min and approximately 80% within 30 min. It was indicated in this study that the mechanism of drug dissolution improvement was associated with the effects of nanoporous ZnO carrier on increasing drug dispersion, controlling drug in nanopores as amorphous form and inhibiting amorphous recrystallization.
Subject(s)
Anti-Inflammatory Agents, Non-Steroidal , Chemistry , Calorimetry, Differential Scanning , Drug Carriers , Indomethacin , Chemistry , Microscopy, Electron, Scanning , Nanostructures , Phosphodiesterase 3 Inhibitors , Chemistry , Solubility , Spectroscopy, Fourier Transform Infrared , Tetrazoles , Chemistry , X-Ray Diffraction , Zinc Oxide , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To investigate whether hypertonic saline (HS) can induce the synthesis and release of glutamate in cultured hypothalamic astrocytes or C6 cell line.</p><p><b>METHODS</b>Astrocytes were isolated, cultured, purified and identified from the hypothalamus of newborn rat (1 day). The astrocytes were randomly divided into five groups: isotonic (IS) and HS groups, astrocytes were incubated by IS and HS (320 mosM NaCl) medium, respectively, for 1, 3, 5, 10 or 15 min; carbenoxolone (CBX)+IS and CBX+HS groups, astrocytes were pre-treated with CBX (100 mmol/L) for 1 h at 37 degrees C in a 5% CO(2) / 95% atmosphere, then removed to IS and HS medium, respectively, for 1, 3, 5, 10 or 15 min; Ca(2+)+HS group, astrocytes were pre-incubated with Ca Ca(2+) (1,000 micromol/L) for 1 h at 37 degrees C in a 5% CO(2) / 95% atmosphere, followed by a wash with isotonic FBS/DMEM, and then removed to hypertonic saline for 1, 3, 5, 10 or 15 min. The media of five groups were collected to analyze the medium glutamate concentration with high performance liquid chromatography. The astrocytes were fixed and double immunofluorescent stained with anti-glial fibrillary acidic protein (GFAP) and anti-glutamate. The C6 cells were divided into four groups: IS, HS, CBX+IS and CBX+HS groups, and used for quantitative measurement of glutamate in cells by flow cytometry (FCM).</p><p><b>RESULTS</b>(1) Anti-GFAP immunofluorescent signal revealed no significant difference among various time points in each group, or among the five groups. (2) The anti-glutamate immunofluorescent signal was increased in HS group and peaked at 5 min, and decreased and returned to the level of IS group at 15 min (P < 0.01 vs the 5 min of HS group). In CBX+HS group, the glutamate intensity was higher than that in CBX+IS and HS groups. (3) The medium glutamate concentration had no change after treatment with HS for 1 and 3 min, while increased markedly after treatment for 5 min to 15 min (P< 0.01 vs 1 min and 3 min). On the contrary, the medium glutamate concentrations in the CBX+HS or Ca(2+)+HS group were significant lower than that in the HS group (P < 0.01). (4) FCM showed HS and CBX+HS induced glutamate increase in C6 cells.</p><p><b>CONCLUSION</b>HS induced cultured rat hypothalamic astrocytes or C6 cells to synthesize and release glutamate; CBX could block glutamate release, but could not disrupt glutamate synthesis.</p>
Subject(s)
Animals , Rats , Analysis of Variance , Animals, Newborn , Astrocytes , Metabolism , Calcium , Pharmacology , Carbenoxolone , Pharmacology , Cells, Cultured , Chromatography, High Pressure Liquid , Methods , Flow Cytometry , Gene Expression Regulation , Glial Fibrillary Acidic Protein , Metabolism , Glutamic Acid , Metabolism , Hypothalamus , Cell Biology , Saline Solution, Hypertonic , Pharmacology , Time FactorsABSTRACT
A method for automatic background recognition and removal in CR/DR images is presented in the paper. It is applied to PACS environment, significantly improving and increasing various features such as image display, image printing, image transporting and image compression.
Subject(s)
Humans , Algorithms , Image Processing, Computer-Assisted , Methods , Quality Control , Radiographic Image Enhancement , Methods , Radiographic Image Interpretation, Computer-Assisted , Methods , Radiology Information Systems , Sensitivity and Specificity , Tomography, X-Ray Computed , MethodsABSTRACT
Objective To investigate the mechanisms of astrocytes modulating neurons in rat supraoptic nucleus induced by hypotonic stimulation and the effect of 6-aminomethyl-3-methyl-4H-1,2,4-benzothiadiazine-1,1dioxide HCl(TAG,a antagonist for taurine) or carbenoxolone(CBX,a gap junction blocker)on the responses of astrocytes and neurons in SON.Methods Adult male Sprague-Dawley rats were divided into four groups: the control group was injected with 5.5ml/kg 0.9% NaCl solution into the caudal vein;the hypotonic group was injected with 5.5 ml/kg hypo-saline(0.83% glucose plus 0.3% NaCl);TAG + hypotonic and CBX + hypotonic groups were injected with TAG(100?mol/L) or CBX(10g/L) into the lateral ventricle respectively,and were injected 2 hours later with hypotonic saline into the caudal vein.With anti-Fos,anti-vasopressin(VP),anti-glycine receptor(GlyR),anti-glial fibrillary acidic protein(GFAP) and anti-connexin43(Cx43) immunofluorescent staining methods,the responses of neurons and astrocytes in SON were studied.Results In control rats,Fos-,VP-,and GlyR-expression in the neurons and GFAP-or Cx43-expression in the astrocytes were lower.In hypotonic rats,GFAP-,Cx43-and GlyR signals were more than those in control rats,while Fos-and VP-signals were less.Compared with those in hypotonic rats in TAG + hypotonic or CBX + hypotonic rats,GFAP-and Cx43-signals in the astrocytes were the same,GlyR-signals in the neurons decreased,and Fos-and VP-signals increased.Conclusion Hypotonic stimulation activates SON astrocytes,which then release taurine through gap junction signaling to the neurons and inhibit the release of VP from the neurons.