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ObjectiveTaking Achyranthis Bidentatae Radix（ABR） from different origins as samples， to quantitatively analyze the chemical composition and chromaticity of ABR with different processing degrees， and clarify the correlation and change law between color and composition in the processing process of ABR， so as to provide reference for the quality evaluation of processed products of ABR. MethodThe colorimeter is used to measure the chromaticity values of three kinds of processing degrees of ABR in different origins to show the color value change trend during the processing process， and the color parameters of wine-processed and salt-processed products of ABR with different processing degrees were analyzed by principal component analysis（PCA）， orthogonal partial least squares-discriminant analysis（OPLS-DA） and other analysis methods. The contents of eight representative components of ABR were measured by high performance liquid chromatography（HPLC）， the correlation between chromaticity and each representative component was analyzed by Pearson correlation analysis， and the applicability of the selected eight representative components was further verified by Fisher linear discriminant analysis， and the wine-processed and salt-processed products of ABR with different processing degrees were grouped according to the degree of processing， and 48 samples of wine-processed and salt-processed products with different processing degrees were used as training samples. Taking the contents of 5-hydroxymethylfurfural， polypodine B， β-ecdysterone， 25R-inokosterone， 25S-inokosterone， ginsenoside Ro， chikusetsusaponin Ⅳa and polysaccharides as variables， the discriminant function was established respectively， and 12 samples of wine-processed and salt-processed products of ABR with different processing degrees were back-tested to verify the discriminant function and test the reliability of the function. ResultPCA and OPLS-DA results showed that ABR samples with different processing degrees were classified into clusters， and the results could significantly distinguish different processed products. During the process of wine and salt processing， the contents of 5-hydroxymethylfurfural， ginsenoside Ro， and chikusetsusaponin Ⅳa gradually increased with the deepening of the processing degree， while the contents of polypodine B， β-ecdysterone， 25R-inokosterone， 25S-inokosterone and polysaccharides showed a gradual decreasing trend， indicating these 8 components increased and decreased to different degrees in the process of wine and salt processing. The results of Pearson correlation analysis showed that the 5-hydroxymethylfurfural content of the samples with different processing degrees of wine-processed and salt-processed products were negatively correlated with the brightness value（L*） and the total color difference value（E*ab）（P<0.01）， and positively correlated with the red-green value（a*） and the yellow-blue value（b*）（P<0.01）， and that the content of polypodine B and polysaccharides were positively correlated with L* and E*ab（P<0.01）. The discriminant functions of wine-processed and salt-processed products of ABR were established by Fisher linear discriminant analysis， and their accuracy rates in the training samples were 93.75% and 95.83%， respectively. Twelve test samples of wine-processed and salt-processed products with different processing degree were back substitution， and the correct rate was 100%. ConclusionThe trend of composition and color changes of ABR with different processing degrees in different production areas is relatively consistent， and the color value can better distinguish ABR with different processing degrees， and the color of ABR is related to some representative components in the processing process， indicating that the color can provide reference for the identification of the processing degree of ABR and the prediction of component content.
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ObjectiveTo investigate the metabolites and gene expression characteristics in fibrous roots of Dioscorea zingiberensis in response to low phosphorus stress. MethodThe severe stress group， the moderate stress group， and the normal group were set up to stimulate the low phosphorus stress experiment. The fibrous roots of D. zingiberensis were collected during initial stress. The metabolites and transcriptomic characteristics were analyzed by gas chromatography-mass spectrometry （GC-MS） derivatization and RNA-seq techniques. Through multivariate statistical analysis of metabolites treated by different methods，functional analysis of differentially expressed genes， and data mining， the metabolism markers produced in fibrous roots of D. zingiberensis under low phosphorus stress were screened out， and the metabolic pathway characteristics of different genes were analyzed. ResultA total of 116 GC-MS metabolites were detected from the fibrous roots of D. zingiberensis. The metabolic characteristics of fibrous roots of D. zingiberensis under different low phosphorus treatments were obviously different. Orthogonal partial least squares discriminant analysis（OPLS-DA） model was used to screen six differential metabolites represented by sugars and alcohols from metabolites of fibrous roots treated with different methods，and these components were presumedly metabolism markers of fibrous roots of D. zingiberensis in response to low phosphorus stress. The differential genes screened out from the severe stress group and the normal group were mainly enriched in peroxidase pathway，phosphate and hypophosphate metabolism pathway，while the differential genes screened out from the severe stress group and the moderate stress group were mainly enriched in glutathione metabolism pathway and phosphopentose pathway. A total of 177 differential genes in response to low phosphorus stress were screened out from fibrous roots， involving many pathways such as terpenoid skeleton and inositol biosynthesis，which was consistent with the fact that the metabolic differential components in fibrous roots in response to low phosphorus stress were mainly saccharides and inositol. ConclusionThe metabolites and gene expression in fibrous roots of D. zingiberensis responded to low phosphorus stress，and the differential metabolites were closely related to differentially expressed genes. This study is expected to provide a theoretical basis for the research on the molecular mechanism of D. zingiberensis in response to low phosphorus stress.
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Objective To determine the content of baicalin in Radix Scutellariae granule from different manufacturers using near infrared spectroscopy(NIRS)technology. Methods Utilizing NIRS combined with partial least squares,and simultaneously opti?mizing the pretreatment methods and the range of spectrum,the quantitative model of baicalin in Radix Scutellarie granules was estab?lished. Results In the model correlation coefficient(R2)was 0.9702,root-mean-square error of calibration(RMSEC)was 0.555,and root-mean-square error of predict(RMSEP)was 1.05. Conclusion In this paper,rapid quality analysis method of Radix Scutellariae granules from different manufacturers is studied using NIRS technology. The model can predict the content of baicalin nondestructively and rapidly. It can give some reference for researching the quality control of Radix Scutellariae granules .
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Objective:To observe the clinical characteristics of elderly patients with liver failure complicated with fungal infection,and to analyze the factors influencing the prognosis.Method:117 cases of elderly patients with liver failure,who were treated in our hospital from May 2013 to May 2015,were selected as object,according to whether combined with fungal infection,the patients were divided into Fungal infection group (57 cases) and non fungal infection group (60 cases).The differences of liver function index,treatment effective rate and mortality were observed between the two groups;To compare the prognosis of patients with different clinicopathological features,and to explore the factors influencing the prognosis of patients.Results:The scores of ALT,AST and DBIL in patients with fungal infection were significantly higher than those without fungal infection,and the difference was statistically significant (P＜0.05);The effective rate of the treatment group was significantly lower than that of the non fungal infection group,the mortality rate was higher than that of the non fungal infection group,the difference was statistically significant (P＜0.05);The death rate of patients with age was more than or equal to 70 years of age,with diabetes,with fungal infection were higher (P＜0.05);Logistic regression analysis showed that combined with diabetes mellitus,combined with fungal infection was an independent prognostic factor for elderly patients with liver failure (OR=2.982,4.817,P＜0.05).Conclusion:Liver function injury is severe in elderly patients with liver failure,the mortality rate is high,and fungal infection is more serious,and diabetes and fungal infection are risk factors for mortality.
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Objective To analyze clinical distribution and drug resistance of extended-spectrum β-lactamase(ESBLs)-producing and non ESBLs-producing Escherichia coli(E.coli) isolated from 2014 to 2015.Methods Collected 4 721 clinical specimens from January 2014 to December 2015,separated and identified by using VITEK 2-Compact automatic microorganism identification and sensitivity analysis system of Biomerieux,France.Results A total of 1 181 E.coli were isolated from 4 721 clinical specimens,the isolation rate was 25.02%,and the isolation rates of 2014 and 2015 were 17.38% and 19.24% respectively.Meanwhile,the isolation rates of ESBLs-producing E.coli from 2014 and 2015 were 44.46% and 51.71%,increased 7.25%.For the ESBLs-producing E.coli,the main specimens from urine,sputum,blood,appendix content,pus and secreta,and general surgery department,pneumology department,urology,Neurosurgery departments were the main infection departments.For the non ESBLs-producing E.coli,the main specimens from urine,blood,sputum,appendix content,pus and secreta.The drug resistance of E.coli to antibiotics showed increasingly upward trend from 2014 to 2015.However,it showed high sensitive to amikacin,imipenem and meropenem.Conclusion As the isolation rate of E.coli increased in 2015,so does the drug resistance,and it is need combine with the actual situation of medication to regulate the usage of antibiotics.
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Objective To compare the diagnostic efficiency of the thyroid imaging reporting and data system (TIRADS), the Bethesda system for reporting thyroid cytopathology(BSRTC) and BRAFV600E detection, and their combined use in the differentiation between benign and malignant thyroid nodules. Methods One hundred and twenty eight patients with 128 thyroid nodules who were scheduled for ultrasound-guided fine-needle aspiration biopsy (FNAB) were recruited for the study. All of them underwent ultrasound, fine-needle aspiration cytology(FNAC) examination, and BRAFV600E detection. TIRADS and BSRTC systems were adopted to judge the ultrasound and FNAC results. The receiver operating characteristic curve was established to assess the diagnostic value of each method. Results The sensitivity, specificity, and AUC of TIRADS were 74. 3%, 84. 5%, and 0. 794, respectively. BSRTC had higher specificity(98. 3%) and equal sensitivity compared to TIRADS. The sensitivity, specificity, and AUC of BRAFV600E detection were the highest ones among the three methods. Combinations of different methods could increase the diagnostic sensitivity and accuracy. The combination of FNAC and BRAFV600E detection significantly increased the diagnostic efficiency(AUC=0. 984), with sensitivity 98. 6% and specificity 98. 3%. Conclusions The diagnostic value of BRAFV600E detection in the differentiation of benign and malignant thyroid nodules is better than both TIRADS and BSRTC, and the combination of FNAC and BRAFV600E detection reaches the best diagnostic efficiency.
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Objective To investigate the expression of microRNA -216a(miR -216a)in patients suf-fering with breast cancer ,and identify the function and mechanism of miR -216 a on autophagy .Methods The expression of miR-216 a in 30 tumor tissues and paired normal tissue of breast cancer were detected by qRT -PCR.Inhibiton of miR-216a in MCF-7 cell lines was done by transfection of miR -216a inhibitor ( AMO-216a).Cell viability was detected by MTT assay .The level of Beclin 1 was detected by western blot .Results The level of miR-216 a was significant elevated in tumor tissue .Cell viability was markedly decreased owing to inhibition of miR-216a in MCF-7 cells.The level of Beclin 1 was significantly increased by transfection of miR-216a inhibitor in MCF-7cells(P<0.05).Conclusion The level of miR-216a is increased in breast canc-er tissue, and it might at least in part promote breast cancer via downregulating Beclin 1 and affecting autophagy .
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Objective To explore a novel and highly specific small-molecule TNFβinhibitor by using computer-aid?ed virtual screening and cell-based assays in vitro. Methods Computer-aided drug design and virtual screening were used to design and identify chemical compounds that targeted TNFβbased on the crystal structure of the TNFβ-TNFR1 com?plex. The effect of the small-molecule compound against TNFβ-induced cytotoxicity of L929 cells was detected by MTT as?say, and the efficacy of the compound to inhibit TNFβ-induced apoptosis of L929 cells was determined by flow cytometry as?say. The impact of the compound on L929 cell cycle was examined by Propidium Iodide (PI) staining and flow cytometry, and the influence of the compound on TNFβ-triggered signal pathway was analyzed by Western blot assay and Ultra VIEW VOX 3D Live Cell Imaging System. Results No.35 compound (named as C35 thereafter) could effectively inhibit TNFβ-induced cell death in a dose dependent manner, and the half-maximum inhibition concentration (IC50) was 8.19μmol/L. Furthermore, C35 had lower cytotoxicity and minimal effect on L929 proliferation. Here we further revealed that C35 could affect TNFβ-induced apoptotic pathway by blocking the activation of Caspase 3, and markedly reduce L929 cell apoptosis induced by TNFβ. Conclusion A novel TNFβsmall-molecule inhibitor was identified by combining computer-aided virtual screening with functional assays, and which could block TNFβ-triggered apoptotic pathway and efficiently inhibit the cell death in?duced by TNFβ.
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<p><b>OBJECTIVE</b>To clarify the role of endothelial cells (ECs) injury induced by anti-endothelial cell antibody (AECA) in allogeneic hematopoietic stem cell transplantation (allo-HSCT).</p><p><b>METHODS</b>Serum immunoglobulin (IgG) from allo-HSCT recipients were purified and incubated with human umbilical vein vascular endothelium (HUVEC) in vitro, then the functional changes and cell apoptosis were tested.</p><p><b>RESULTS</b>After incubation with AECA positive IgG, soluble adhesion molecules significantly elevated in culture supernatant. When concentration of IgG was 160, 320, and 640 μg/ml, concentrations of soluble intercellular adhesion molecule-1 in supernatant were statistically higher in AECA positive groups [(117.10 ± 12.82) vs (78.17 ± 4.90) pg/ml, (151.30 ± 15.35) vs (89.46 ± 6.02) pg/ml, (239.00 ± 32.53) vs (127.80 ± 13.86) pg/ml, P<0.01)]. When concentration of IgG was 40, 80, 160, 320, and 640 μg/ml, concentrations of soluble vascular cell adhesion molecule-1 in supernatant were also statistically higher in AECA positive groups [(38.51 ± 3.76) vs (24.78 ± 2.59) pg/ml, (61.34 ± 6.99) vs (38.20 ± 3.17) pg/ml, (135.60 ± 24.46) vs (63.73 ± 5.08) pg/ml, (221.30 ± 29.40) vs (112.80 ± 8.91) pg/ml, (420.90 ± 31.70) vs (224.40 ± 20.79) pg/ml, P<0.01]. Clotting activity factors also elevated in culture supernatant after incubation with AECA positive IgG. When concentration of IgG was 80, 160, 320, and 640 μg/ml, concentrations of von Willebrand factor were statistically higher in AECA positive groups [(19.51 ± 0.72) vs (17.17 ± 0.60) ng/ml, P=0.0193; (22.97 ± 1.18) vs (18.27 ± 0.61) ng/ml, (26.40 ± 1.54) vs (19.53 ± 0.70) ng/ml, (34.35 ± 1.60) vs (23.81 ± 0.92) ng/ml, P<0.01]. When concentration of IgG was 320 and 640 μg/ml, concentrations of thrombomodulin were statistically higher in AECA positive groups [(57.50 ± 4.50) vs (40.31 ± 4.39) pg/ml, P=0.0132; (59.18 ± 4.11) vs (38.84 ± 5.16) pg/ml, P<0.01]. However, inflammatory factors (IL-1β, IL-6, IL-8 and ANG2) were not statistically different in AECA positive and negative groups (P>0.05). Moreover, IgG from AECA positive samples did not change the proliferation or cell apoptosis.</p><p><b>CONCLUSION</b>AECA from allo-HSCT recipients dysregulates ECs' function in vitro, but do not induce apoptosis, which is valuable in the pathophysiology of graft-versus-host disease (GVHD) and other complications after allo-HSCT.</p>
Subject(s)
Humans , Allografts , Autoantibodies , Endothelial Cells , Endothelium, Vascular , Graft vs Host Disease , Hematopoietic Stem Cell Transplantation , Intercellular Adhesion Molecule-1 , Interleukin-6 , Umbilical Veins , von Willebrand FactorABSTRACT
<p><b>OBJECTIVE</b>Determine the content of forsythoside A in fructus forsythiae by combining near-infrared spectroscopy with the chemometrics method.</p><p><b>METHOD</b>HPLC was used as a reference method to determine the content of forsythoside A in fructus forsythiae. Multivariate calibration model based on PLS algorithm was developed to correlate the spectra and the corresponding values determined by the reference method.</p><p><b>RESULT</b>RMSECV (root-mean-square error of cross-validation) of the model for forsythoside A was 0.221 and the correlation coefficients of the calibration model was 0.969. External validation with external validation samples proved that the relative coefficient of the predicted value and the HPLC value was 0.961 and the RMSEP was 0.18.</p><p><b>CONCLUSION</b>NIRS can be used in the determination of forsythoside A, which sets up the foundation of product-line control of fructus forsythiae.</p>
Subject(s)
Drugs, Chinese Herbal , Chemistry , Forsythia , Chemistry , Glycosides , Chemistry , Spectroscopy, Near-Infrared , MethodsABSTRACT
Objective To explore the levels of T lymphocyte subsets in asthmatic children and discuss their relationship.Methods 30 children with acute asthma attacks were divided ito disease control(bronchopneumonias)group(25 cases)and healthy control group(14 cases).Flow cytomerty was used to analyze the T lymphocyte subsets in them.Results CD 4+ and CD 4+/CD 8+T cell of the patients of the maderate to serere degree were both significantly higher than those in normal control.Conclusion(1)CD 4+ T cell plays an important role in asthma chronic airway inflammation.(2)There were no significant difference in the level of CD4+ T cell,CD8+ T cell,CD4+/CD8+ T cell between the patients with asthma of mild degree and those of moderate or severe degree group,but CD 8+ T cell a little higer in the latler patlents,which still needs further research.
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Objective To evaluate the efficiency of lamivudine combined with hepatitis B immunoglobulin to prevent hepatitis B recurrence after liver transplantation.Methods The literature concerning the application of lamivudine and hepatitis B immunoglobulin after liver transplantation was collected.The efficacy of initial lamivudine,and hepatitis B immunoglobulin alone or combined together was evaluated in liver transplantation recipients with hepatitis B by performing a systematic review of the literature with a Meta-analysis of clinical trials.Odds ratio(OR)was applied to evaluate the effect of therapeutic alliance to decrease the reinfection rate whether or not.Results We identified 7 clinical trials,and there were 360 patients subjected.OR and 95% confidence interval(95%CI)was 0.34(95%CI ranging from 0.18 to 0.64).For overall test result,Z value was 3.33 and P value was 0.01.The P value was 0.310 for our test of study homogeneity.Conclusion Our meta-analysis shows that lamivudine or hepatis B immunoglobulin can effective prevent hepatitis B recurrence after liver transplantation,and therapeutic alliance is more effective than monotherapy,and tolerance to lamivudine or hepatis B immunoglobulin was good.
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@#ObjectiveTo observe the effect of selective posterior rhizotomy (SPR) on children with spastic cerebral palsy.Methods517 spastic cerebral palsy cases were operated on by SPR, and a following up was performed for 24 months. After operation, curative effect of SPR was examined and evaluated.Results298 cases had excellent effect (57.6%); 187 cases had good effect (36.2%).Conclusion SPR is very effective for children with spastic cerebral palsy.
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Objective To investigate the correlation between force nurses' mental health and the coping style and social support under military stress. Methods An on-scene investigation into 138 force nurses who had participated in the military training was conducted by using a symptom checklist (SCL-90), a simple coping style questionnaire (SCSQ) and a Social Support Rating Scale (SSRS) respectively and the data were processed by t-test, correlation analysis and path analysis. Results The SCL-90 factor scores of force nurses under military stress were significantly lower than Chinese norms (P