1.Transcript atlas of blood coagulation-associated gene uncovers physiological activities in 8 liver cell types of rat regenerating liver
Shengnan CUI ; Jing GAO ; Cunshuan XU
Acta Anatomica Sinica 2010;41(2):313-317
ObjectiveTo study the transcript atlas of cell immunity-associated genes in 8 liver cell types including hepatocytes, bile duct epithelial cells, oval cells, hepatic stellate cells, sinus endothelial cells, Kupffer cells, pit cells and dendritic cells from the rat regenerating liver. Methods Isolation of rat 8 liver cell types, detection of their genes expression change and the prediction physiological activities were accorded to cluster program, and the methods of bioinformation and systematic biology, and their gene expression patterns were analyzed by Microsoft Excel software. Results A total of 40 blood coagulation-associated genes yielded the meaningful expression changes in liver regeneration. Serpine1, a2m in eight liver cell types, vwf, klkb1 in seven liver cell types other than Kupffer cells, and other genes in the two or more liver cell types yielded the meaningful expression changes. It suggested that the synthesis of kallikrein and prothrombin、the formation of thrombin were enhanced at the priming and progressing phases of liver regeneration. The biological activities, such as fibrin monomer aggregated into fibrin polymers, were elevated at termination phase.Conclusion The rat liver regeneration is closely associated with the blood coagulation.
2.Biocompatibility of titanium dioxide nanotube bio-dialysis membrane
Yuhan GAO ; Shengnan WANG ; Biaobaio WANG
Chinese Journal of Tissue Engineering Research 2017;21(26):4167-4171
BACKGROUND: Traditional dialysis membranes are mostly synthesized by organic polymer materials. Although these materials can meet the needs of treatment, the pore size range is large and the microtubules are not uniform, which can cause protein clogging on the dialysis membrane. Therefore, it is difficult to achieve the expected therapeutic effect.OBJECTIVE: To study the hemocompatibility of titanium dioxide nanotube bio-dialysis membrane.METHODS: High-strength titanium dioxide nanotube films were prepared by anodic oxidation method, the bottom of the nanotubes was etched by HF gas, and the LLC-PK1 and ECV304 cells were seeded onto the prepared titanium dioxide nanotube array membranes to construct two kinds of titanium dioxide nanotube bio-dialysis membranes. Hemolysis test,dynamic clotting time test and platelet adhesion test were used to determine the hemocompatibility of the prepared titanium dioxide nanotube bio-dialysis membrane.RESULTS AND CONCLUSION: In the hemolysis test, the hemolysis rates of the titanium dioxide nanotube array membranes carrying LLC-PK1 and ECV304 cells were lower than that of the polyurethane material (0.30%, 0.34%,0.56%; P < 0.05). In the dynamic clotting test (20, 40, 70 minutes), the dynamic clotting time of the titanium dioxide nanotube array membranes carrying LLC-PK1 and ECV304 cells were significantly longer compared with the polyurethane material (P < 0.05). In the platelet adhesion test, the platelet adhesion rate showed no significant difference between the polyurethane material and the titanium dioxide nanotube array membranes carrying LLC-PK1 and ECV304 cells (P > 0.05). These findings indicate that the titanium dioxide nanotube bio-dialysis membrane possesses good hemocompatibility.
3.Characteristics and Rational Use of Antimethicillin-resistant Staphylococcus Aureus (anti-MRSA) Drugs
Guoqiang LIU ; Shengnan GAO ; Yingying ZHENG
Herald of Medicine 2017;36(3):243-246
This study is aimed to make a comprehensive introduction to the anti-MRSA drugs,and also to compare the safety and efficacy among a variety of anti-MRSA drugs.Finally,it is pointed that we should select the anti-MRSA drugs precisely according to different situation of disease when treating the infection with MRSA.Then we can make the individualized treatment for patients and provide a basis for the disease when treatment of patients as well.
4.Effects of SNP,GLU and GABA on the neuronal activity of striatum nucleus in rats
Chunna LIU ; Xingyu LIU ; Dongming GAO ; Shengnan LI
Chinese Pharmacological Bulletin 1986;0(04):-
Aim The goal is to make a further comprehension of the pathogenesis of Parkinsons disease (PD) and hence add further knowledge for PD diagnosis by observing the functions of nitric oxide (NO) in striatum (STR). Method Microelectrodes were used to observe the effects of sodium nitroprusside (SNP), L-glutamic acid (GLU) and ?-aminobutyric acid (GABA) on STR neurons' spontaneous firing rates, and at the same time, we observed the effects of NO on GLU and GABA. Results 77% (51/66) of the tested neurons were excited by SNP, NO synthase inhibitor L-NAME antagonized the excitatory effect of SNP. Duringthe periods of microelectrophoresis GLU and GABA, SNP amplified the excitatory effect of GLU and weakened the inhibitory effect of GABA. L-NAME antagonized the excitatory effect of GLU.Conclusion These results demonstrated clearly that NO, GLU and GABA functions might converge in the same STR neurons. NO and GLU functions are excitatory whereas GABA function is inhibitory on the firing activities in STR neurons.
5.Use of cone-beam computed tomographyto demonstrate morphology of maxillary sinus and association of-maxillary sinus with maxillary posterior teeth
Shengnan ZHAO ; Chengzhi GAO ; Mimi YANG ; Wenfei LIU
The Journal of Practical Medicine 2016;32(16):2680-2682
Objective To study the morphological variations of maxillary sinus and to provide anatomical basis for maxillary posterior teeth implantation and extraction usingcone-beam computed tomography (CBCT) scan-ning. Methods CBCT images from 403 patients were reviewed. The minimal distance from sinus floor to alveolar ridge wasmeasured and the number of patients with clinical features such as having sinus septum , mucosal thicken-ing and posterior teeth roots extend into maxillary sinus were counted. Results The mean value of the minimal dis-tance from maxillary sinus floor to alveolar ridge was about 8.3 mm, there was no significant statistical difference between sex, but there was a significant statisticalsignificant difference between the left sides and the right sides. Occurrences of sinus septum, mucosal thickening and roots into sinus were 98.6%, 31% (in which 56.3% of mu-cosal thickening were related to apical periodontitis) and 47%. there was no significantstatisticaldifference between the two sides in males females. Conclusions The morphological variations of maxillary sinus are significant. Chron-ic inflammation in maxillary sinuis is closely related to the position of maxillary posterior teeth roots and periapical lesions.
6.Simultaneous Determination of Six Effective Components in Crataegus pinnatifida by Quantitative Analysis of Multi-components by Single Marker
Mingyu YANG ; Jing GAO ; Yilong DU ; Yanrong LI ; Shengnan ZHAO ; Haifeng PAN
China Pharmacy 2016;27(24):3404-3407
OBJECTIVE:To establish a method for the simultaneous determination of chlorogenic acid,vitexin glucoside,vi-texin rhamnoside,vitexin,rutin and hyperoside in Crataegus pinnatifida. METHODS:With reference peak of vitexin glucoside, HPLC was conducted to calculate the relative correction factor(RCF)of chlorogenic acid,vitexin glucoside,vitexin rhamnoside, vitexin,rutin and hyperoside,then the contents of above-mentioned 5 components in C. pinnatifida were calculated. The column was Agilent ZORBAX SB C18 with mobile phase of 0.1% formic acid-acetonitrile-tetrahydrofuran (gradient elution) at a flow rate of 1.0 ml/min,the detection wavelength was 350 nm,column temperature was 30 ℃,and the injection volume was 10 μl. RE-SULTS:The linear range was 12.50-400.0 μg for chlorogenic acid(r=0.999 8),25.00-800.0 μg for vitexin glucoside(r=0.999 9), 31.25-1 000.0 μg for vitexin rhamnoside(r=0.999 9),6.470-260.0 μg for vitexin(r=0.999 9),2.50-80.0 μg for rutin(r=0.999 8) and 9.375-300.0 μg for hyperoside(r=0.999 9);RSDs of precision,stability and reproducibility tests were lower than 2.0%;re-coveries were 99.2%-103.9%(RSD=1.6%,n=6),97.9%-100.8%(RSD=1.2%,n=6),99.2%-100.8%(RSD=0.5%,n=6), 97.3%-101.3%(RSD=1.5%,n=6),98.0%-103.0%(RSD=1.9%,n=6)and 95.5%-101.5%(RSD=2.2%,n=6). RCFs of vitex-in glucoside with chlorogenic acid,vitexin rhamnoside,vitexin,rutin and hyperoside were 1.119,1.009,0.706,1.063 and 0.830, respectively. CONCLUSIONS:The method is simple with good precision,stability and reproducibility,and it can be sued for the simultaneous determination of 6 components in C. pinnatifida.
7.Research progress on the anti-inflammatory effect of interleukin 37 and its role in asthma
Chinese Journal of Microbiology and Immunology 2021;41(6):488-492
IL-37 is a member of the IL-1 family of cytokines, which functions as a natural suppressor of inflammatory and immune responses. IL-37 likely functions to limit excessive inflammation, accordingly, IL-37 levels are abnormal in patients with inflammatory and autoimmune diseases. In this review, we provide an overview of the anti-inflammatory mechanism of IL-37. It also summarizes the research progress of expression and its role in bronchial asthma, a heterogeneous chronic airway inflammatory disease.
8.Effect of S100A10 macrophage-mediated inflammation and migration
Jiaoyang LI ; Shengnan LIU ; Yuxin ZHAO ; Jingtao GAO ; Hui WANG
Chinese Journal of Immunology 2024;40(11):2257-2261
Objective:To investigate the effect of S100A10 macrophage-mediated inflammation and migration.Methods:C57BL/6J mouse model of S100A10-KO,and RAW264.7 cell line of S100A10-KO were established.Taking mice's peritoneal macro-phages(PMs)and bone marrow macrophages(BMDMs),resuscitating RAW264.7 cell lines,and collecting cells.qRT-PCR was used to detect the effect of S100A10 knockout on the secretion of inflammatory factors in macrophages;wound healing assay and Transwell assay were used to detect the effect of S100A10 knockout on macrophage migration;CCK8 kit was used to detect the effect of S100A10 knockout on the proliferation of RAW264.7 cells;qRT-PCR and Western blot were used to detect the expressions of matrix metallopro-teinase 9(MMP9)and non-muscle myosin heavy chain 9(MYH9).Results:After S100A10 knockout,the inflammatory factors IL-6,IL-1β and MCP-1 levels(P<0.05)secreted by RAW264.7,PMs and BMDMs were excreted decreased;cell scratches and Transwell showed that S100A10 knockout inhibited macrophage migration;CCK8 experiments showed that the proliferation capacity of macro-phages weakened after S100A10 knockout;qRT-PCR and Western blot experiments showed that the migration-related proteins MMP9 and MYH9 decreased after S100A10 knockout.Conclusion:S100A10 knockout decreases the secretion of inflammatory factors by macrophages and attenuated the migration and proliferation of macrophages.
9.Comparison of Different Time Series Models in the Prediction of Hemorrhagic Fever with Renal Syndrome in Weifang
Liang ZHENG ; Qi GAO ; Shengnan YU
Chinese Journal of Health Statistics 2024;41(3):393-397
Objective To compare the effects of SARIMA,LSTM and EDM in predicting the incidence of HFRS in Weifang under different circumstances,and explore the best prediction model.Methods The monthly incidence of HFRS in Weifang from January 2011 to December 2017 was selected to construct the SARIMA model,univariate LSTM model,univariate EDM model,and SARIMAX model,multivariate LSTM model,and multivariate EDM model including meteorological factors.The monthly incidence from January 2018 to December 2018 was predicted,and the prediction effects of each model were compared.Results The MAPE of SARIMA model,univariate LSTM model,multivariate LSTM model,univariate EDM model,multivariate EDM model were 42.17%,48.40%,16.19%,55.00%,51.79%,respectively.Conclusion The multivariate LSTM model including meteorological factors had a good prediction effect on the incidence of HFRS in Weifang,and the prediction results could provide reference for the prevention and control of HFRS.
10.Study on the diagnostic value of superb microvascular imaging ,advanced dynamic flow and color Doppler flow imaging in breast microcarcinoma and their correlation with pathological microvessel density
Jian ZHANG ; Hui CHEN ; Bin XU ; Xie GAO ; Chong WANG ; Yejun LU ; Ye HE ; Shengnan YU ; Lei ZHANG
Chinese Journal of Ultrasonography 2019;28(9):787-793
Objective To investigate the diagnostic value of superb microvascular imaging ( SM I ) , advanced dynamic flow ( ADF ) and color Doppler flow imaging ( CDFI) in breast microcarcinoma ,and to compare the correlation coefficients between these three indicators and postoperative pathological tumor microvascular density ( M VD ) . Methods A total of 85 patients ( 87 lesions ) with BI‐RADS 4 and the maximum diameter≤1 cm were selected ,of which ,46 lesions were benign ( benign group) and 41 lesions were malignant( malignant group) . All the patients and the corresponding lesions were examined by SM I , ADF and CDFI . Blood flow grading was performed on the images using Adler grade of blood flow ,and the difference of blood flow among the 3 methods was compared . T he expression level of M VD in pathological tumor tissues was detected and analyzed for its correlation with Adler classification by three detection techniques . Results T he areas under the ROC curve( AUR) of CDFI ,ADF and SM I were 0 .694 ,0 .705 and 0 .776 respectively based on the gold standard with pathological diagnosis . T he sensitivity ,specificity , positive predictive value ,negative predictive value ,and accuracy of CDFI were 78 .0% ,54 .3% ,60 .4% , 73 .5% ,and 65 .5% , respectively ; those of ADF were 75 .6% , 60 .9% , 63 .3% , 73 .7% and 67 .8% , respectively ; and those of SM I were 78 .0% ,69 .6% ,69 .6% ,78 .0% and 73 .6% ,respectively . T he Adler grades of CDFI , ADF and SM I were positively correlated with M VD ( P < 0 .05 ) , w hich the highest correlation coefficient between SM I and M VD ( r =0 .430 , P <0 .001 ) . Conclusions SM I is superior to ADF and CDFI in detecting the abundance of breast microcarcinoma , and has the highest correlation coefficient among those 3 detection techniques with tumor pathological M VD ,which indicates that SM I may be used for differential diagnosis of breast microcarcinoma and indirectly evaluate the prognosis of patients .