1.Relationship between blocking of N-acetylglucosaminyltransferase V in hepatocarcinoma cells and cellular endoplasmic reticulum stress
Yingying XU ; Yi LU ; Yi ZHANG
China Oncology 2001;0(02):-
Purpose:To study the connection between the blocking of N-acetylglucosaminyltransferase V(GnT-V) and endoplasmic reticulum stress(ER stress). Methods:The recombinant plasmid expressing siRNA of GnT-V was constructed and transfected into SMMC-7721. The key molecules such as GRP78,XBP1 and PERK during ER stress was analyzed in mRNA and protein levels. Results:GRP78 mRNA and protein levels were upregulated, the spliced forms of XBP1 mRNA and protein appeared and ER eIF2? kinase PERK was activated. Conclusions:These results suggest the blocking of GnT-V in SMMC-7721 induces cellular ER stress.
2.Effect of the Sheng Jing Tang on the Ovarian Funtion and Morphology of Female Rat Anovulatory Due to Testosterone
Lu ZHOU ; Qiaoping ZHANG ; Xiaoping XU
Journal of Zhejiang Chinese Medical University 2006;0(06):-
[Objective] To investigate the effects of the Sheng Jing Tang, one of tonyfing kidney and promoting blood circulation recipes,on female rats anovulatory due to testosterone and to study the mechanism of action of the recipe. [Methods] The rat models of anovulatory disease were established by injecting the immature female SD rat with testosterone and treated with TCM and herbs to observe estrous cycle level of sex hormone of blood and the change of pathological histology of ovary. [Results] Sheng Jing Tang could improve the level of sex hormone, contract the expanded oxarian vesicles obviously and increase the quantity of luteum. [Conclusions] Sheng Jing Tang had the effect of improving the syndromes of Polycystic Ovary, inducing ovulation and recovering the function of ovary.
3.Distribution of Toll-like receptor 2 and 4 in human urinary tract
Huachao XU ; Gensheng LU ; Qinghua ZHANG
Journal of Third Military Medical University 2003;0(10):-
Objective To study the mRNA expression of Toll-like receptor (TLR) 2 and 4 in human urinary tract epithelium. Methods The epithelial cells of nephric tubule, pelvis, ureter and bladder were cultured in vitro, and their mRNA expressions of TLR2 and TLR4 were measured by RT-PCR. Results The mRNA expression of TLR2 in nephric tubule, pelvis, ureter and bladder was 0.326, 0.589, 0.602 and 0.735, and that of TLR4 was 0.223, 0.327, 0.379, 0.365, respectively. The mean TLR2 mRNA copy was significantly higher than TLR4 in each tissue (P
4.The effects of coloring agents on the staining susceptibility of resin artificial teeth
Wei ZHANG ; Xu LU ; Shaojiang LI
Journal of Practical Stomatology 2016;32(1):32-36
Objective:To evaluate the staining of different resin artificial teeth treated by different coloring agents.Methods:1 6 teeth of each brand of Endura Anterio,Heraeus's three color synthetic resin teeth,synthetic resin teeth,Efucera-A,KaiFeng synthetic resin teeth were respectively made into test specimens.A surface roughness tester was used to measure Ra along 3 tracks on each sur-face.The specimens of the same brand were respectively immersed into coffee,tea and vinegar as the test groups and distilled water as a control for 4 weeks.The initial and further color of each specimen was measured using a colorimeter.The CIE L* a* b* values were recorded and color differences (ΔE)after immersion were calculated.Data were statistically analyzed by ANOVA.Results:The color stability of the specimens in coffee and tea was significantly affected by the coloring agents(P <0.05),the higher ΔE was ob-served in coffee than in tea(P <0.05).There were no statistically evident color change in water and in vinegar(P >0.05).The ΔE values in the same coloring agent were as follows:Efucera-A,Heraeus's three color synthetic resin teeth,Endura Anterio,synthetic resin teeth and KaiFeng synthetic resin teeth (P <0.05).Conclusion:Extrinsic pigment can make resin artificial teeth stained,and the staining susceptibility of five resin artificial teeth is different.
5.Variable Selection by Orthogonal Descriptors and Prediction of Rf Value of Phenol and Aniline Derivatives
Wenjun ZHANG ; Lu XU ; Yuhua QI
Chinese Journal of Analytical Chemistry 2001;29(2):178-181
Orthogonal descriptors is a viable method for variable selection, but this method strongly depend on the orthogonalisation ordering of the descriptors. In this paper, we compared the different methods used for order the descriptors. It showed that better results could be achieved with the use of backward elimination ordering. We predieted Rf value of phenol and aniline derivatives by this method, and compared it with classical algorithms such as forward selection, backward elimination, and stepwise procedure. Some interesting hints were obtained.
6.The effects of shenxiong injection on the expression of the endoplasmic reticulum stress associated molecules CHOP following cerebral ischemia-reperfusion injury in rats
Lu TANG ; Zhibo ZHANG ; Xu PENG
Journal of Chinese Physician 2013;15(10):1338-1341
Objective To investigate the expression of C/EBP homology protein(CHOP) in rat brain tissue after focal cerebral ischemia-reperfusion,as well as to observe the influence of the shenxiong injection on the expression of CHOP.Methods One hundred forty four male rats were randomly divided into three groups:the sham-operation group,operation group,shenxiong group.Focal cerebral ischemia and reperfusion rat models were established by using suture.Zea Longa method was introduced to evaluate neurologic behavioral changes.The levels of mRNA and protein of CHOP were measured with methods of immunohistochemistry and reverse transcription polymerase chain reaction.The neuronal apoptosis was detected by the method of terminal deoxynucleotidy1 transferase-mediated dUTP-biotin nick end labeling.Results The expression of CHOP was up-regulated in per-infarction after cerebral ischemia-reperfusion in rats.CHOP mRNA and protein levels peaked at the 12th h and 24th h after reperfusion,respectively.The apoptosis cell counting increased gradually after cerebral ischemia-reperfusion and peaked at the 24th h after reperfusion.Compared with the saline control group,treatment with shenxiong injection could reduce the neuronal apoptosis at the 6th,12th,24th,and 72nd h after reperfusion (P <0.01).Compared with the saline control group,treatment with shenxiong injection could decrease CHOP mRNA and protein expression at the 6th,12th,24th,and 72nd h after reperfusion (P <0.01).Conclusions Shenxiong Injection may prevent neurocyte from apoptosis by inhibition of the expression of CHOP induced by endoplasmic reticulum stress.
7.Clinical bioeffects of buccal multiloop appliance
Wannan ZHANG ; Lu HOU ; Shiqian XU
Chinese Journal of Tissue Engineering Research 2014;(8):1277-1282
BACKGROUND:Buccal multiloop appliance in the clinical treatment of Class III malocclusion has good results, but also exhibits some problems and deficiencies in the application process.
OBJECTIVE:To summarize the clinical problems and corresponding solutions of buccal multiloop appliance. METHODS:A computer-based search of Wanfang, CNKI and PubMed databases were performed for articles related to buccal multiloop appliance published from 2000 to 2013. The key words were buccal multiloop, Class III malocclusion, clinical application in Chinese and English.
RESULTS AND CONCLUSION:Compared with other appliances, the buccal multiloop appliance appears to have some unique advantages. The buccal multiloop appliance with the soft elastic role cannot only promote growth and development of the maxilary, but also inhibit the excessive growth of the maxilary and trigger
mandibular functional shift, thereby achieving crossbite correction. Therefore, the buccal multiloop appliance can have good achievements in the clinical crossbite correction of the deciduous and permanent teeth. For patients with Class III malocclusion, the buccal multiloop appliance also shows good results, and the corresponding
clinical problems and deficiencies appear to be resolved one by one accordingly. So the buccal multiloop appliance is highly efficient for crossbite correction.
8.Relationship between early clinical events and value of cardiac troponin T within 6 hours after percutaneous coronary intervention
Dadong ZHANG ; Shoushan LU ; Xu CAI
Chinese Journal of Interventional Cardiology 1993;0(03):-
0 1 ng/ml) and minor value (0 01~0 1 ng/ml) in cardiac troponin T within 6 hours after PCA may be correlated with an increased risk for early adverse clinical outcomes after successful operation
9.Effect of Processing on Pharmacological Actions of Dipsacus Asperoides and Its Different Processed Products
Xu CHEN ; Xianhong ZHANG ; Tuli LU
Chinese Traditional Patent Medicine 1992;0(11):-
Objective:To study the effect of processing on pharmacological actions Dipsacus asperoides and its different processed products.Methods:The analgestic effect of Dipsacus asperoides in mice was observed in hot plate and acetic acid-induced writhing test. The anti-inflammatory action was studied in mouse ear swelling test and capillary permeability test and anti-coagulation action in mice was also observed by mouse blood coagulation time test.Results:The experimental results show that all processed Products of Dipsacus asperoides can inhibit the pain and has the actions of auti-inflammation and auti-coagulation. Conclusion: The actions of its processed products with wine is the most powerful.
10.Efficacy of posaconazole in preventing invasive fungal disease in hematologic patients with neutropenia
Xiaohan XU ; Lu ZHANG ; Minghui DUAN
Chinese Journal of Infection Control 2017;16(1):32-35,57
Objective To evaluate the prophylactic efficacy and safety of posaconazole against invasive fungal disease(IFD)in hematologic patients with neutropenia.Methods Medical records of 18 hematologic patients with neutropenia received posaconazole for preventing IFD in a Beijing hospital between 2014 and 2015,the efficacy and safety was evaluated.Results There was no clinical diagnosis or confirmed diagnosis of IFD among 18 patients during posaconazole prophylaxis period,none of patients stopped posaconazole due to severe adverse reaction.Two patients with acute myeloid leukemia(AML) died of pulmonary infection,1 of whom isolated Stenotrophomonas maltophilia from sputum culture on the 12th day of posaconazole prophylaxis,the other isolated Escherichia coli from sputum culture on the 14th day of posaconazole prophylaxis.Other patients all adherence to posaconazole prophylaxis until granulocyte count recovered,patients were followed up until 100 days medication,no death occurred.The lowest peripheral neutrophil count was(0.00-0.27) x 109/L during posaconazole prophylaxis period,with the median of 0.02 x 109/L;the duration of posaconazole prophylaxis was 8-27days,with the median of 16 days;among patients without IFD breakthrough or received systemic use of other antifungal agents,there were 2 (11.1%) all-cause death within 100 days;there were no adverse reaction,such as liver function abnormalities≥grade 2 and kidney function abnormalities≥grade 2,as well as QTc prolongation.Conclusion Posaconazole is effective for preventing IFD in hematologic patients with neutropenia,adverse reaction is rare.