Objective To investigate the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) in pancreatic cancer and its relationship with P-glycoprotein (P-gp) and vascular endothelial growth factor (VEGF),and to study its correlation with invasion,metastasis and drug re- sistance.Methods The expressions of EMMPRIN,P-gp and VEGF in 34 cases of pancreatic cancer were detected by immunohistochemistry.The correlation analysis and Chi squared test were been used by SPSS 10.0.Results The positive rates of EMMPRIN,P-gp and VEGF in pancreatic cancer were 61.8%,55.9% and 64.7% respectively.EMMPRIN,P-gp and VEGF were associated with lymph node metastasis (P＜0.05),but not associated with sex,age,size of tumor and degree of differentia- tion (P＞0.05).There were close relationship between EMMPR1N and P-gp,VEGF respectively (r= 0.398,r=0.432,P＜0.05).Conclusions EMMPRIN,P-gp and VEGF were higher expressed in pancreatic cancer.EMMPRIN express was correlated with both P-gp and VEGF.It has indicated that during the progression of pancreatic cancer,there are close relationship between invasion,metastasis and drug resistance,and EMMPRIN may play key role in this process.

To study the influence of individualized medication guidance based on an Short Messaging Service( SMS) platform on the medication compliance in the patients with diabetes. Methods: Totally 100 cases of diabetic patients from the outpa-tient section were randomly divided into two groups using a number method with 50 ones in each, namely odd number was in the obser-vation group and even number was in the control group. The observation group was given pharmaceutical guidance based on the SMS technology platform by pharmacists, and the control group was given telephone follow-up once a week to understand the medical situa-tion. At the beginning of the study and after three-month treatment, the medication compliance in the two groups was evaluated, and the control situation of blood glucose was also compared. Results:There was no significant difference in the medication compliance be-tween the two groups at the beginning (P>0. 05). After the 3-month treatment, the blood glucose and medication compliance between the two group had statistical significance (P<0. 01). Conclusion:Based on a mobile phone short message technology platform, indi-vidualized clinical pharmaceutical guidance can significantly improve the medication compliance in diabetic patients.

For screening the potential drugs as anti-liver fibrosis candidates, we established a high- throughput drug screening cell model based on COL1A1 promoter. The activity of COL1A1 promoter and luciferase reporter gene can be elevated by TGF-β1, and inhibited by candidate drugs. We constructed a recombined plasmid with COL1A1 promoter and luciferase reporter gene pGL4.17, the activity of COL1A1 promoter was reflected by fluorescence intensity. COL1A1 promoter activity was detected by Dual-Luciferase Reporter Assay System, it came that the relative luciferase activity of COL1A1 promoter was 15.98 times higher than that of control group induced by TGF-β1, showing the recombined plasmid could be used in cell model. The recombined plasmid was transfected into human hepatic stellate cells LX2, detected the effect of potential drugs, and obtained a stable expression system through stable transfection and monoclonal cell culture. A sample which could reduce COL1A1 promoter activity signally by our cell model, decreased collagen I mRNA and protein expression detected by real-time RT-PCR and Western blotting. It indicates this novel cell model can be used in high-throughput drug screening of potential anti-liver fibrosis drugs.
Collagen Type I ; genetics ; Drug Evaluation, Preclinical ; methods ; Genes, Reporter ; Hepatic Stellate Cells ; High-Throughput Screening Assays ; Humans ; Liver Cirrhosis ; drug therapy ; Luciferases ; Plasmids ; Promoter Regions, Genetic ; RNA, Messenger ; Transfection ; Transforming Growth Factor beta1 ; pharmacology

OBJECTIVETo study the correlation between arachidonic acid (AA) and acute red blood cells damage in rats, and to build a model with hidden blood loss in vivo, and to explore the pathological mechenism of hidden blood loss.

METHODSA total of 50 male adult Sprague-Dawley rats weighing (200 ± 20) g were randomly divided into five groups (n = 10): control group and four experimental groups. The rats in the experimental groups were given 0.5 ml different concentrations of AA dilu- ents, 5, 10, 20, 40 mmol/L respectively. The blood samples were collected from orbital venous at the beginning and 24, 48, 72 hours after administration. Then the changes of hemoglobin (Hb) ,red blood cell count (RBC), glutathione peroxidase (GSH- PX) activity, total superoxide dismutase (T-SOD) activity and hydrogen peroxide (H202) in the blood samples were tested.

RESULTSSignificant hidden blood loss occurred when the concentration was 10 mmol/L in the experimental group, with the RBC and Hb sharply reduced in blood samples. The Hb and RBC were reduced in all the experimental groups and control group at 24 hours after administration, while in the experimental groups they changed more obviously. The GSH-PX activity, T-SOD activity and H₂O₂were also significantly reduced in all groups, and the changes showed significant differences. The Hb and RBC were relatively stable in the control group and the experimental groups at 48 hours after administration; while GSH-PX activity, T-SOD activity and H₂O₂were all significantly decreased, and the changes in the experimental groups were more notable.

CONCLUSIONElevated levels of AA in the blood causes oxidative stress in the red blood cells, leading to the damage of red blood cells and hemoglobin, which is responsible for hidden blood loss.

Animals ; Arachidonic Acid ; toxicity ; Erythrocytes ; drug effects ; metabolism ; Glutathione Peroxidase ; blood ; Hemoglobins ; analysis ; Male ; Rats ; Rats, Sprague-Dawley ; Superoxide Dismutase ; blood

Objective To evaluate the effect of ixeris sonchifolia on mitochondrial transcription factor A (mtTFA) expression following myocardial injury induced by exhausting exercise in rats.Methods Forty male Wistar rats,weighing 200-220 g,were randomly divided into 3 groups using a random number table:control group (group C,n =8),exhausting exercise group (group ES,n =16) and ixeris sonchifolia group (group IS,n =16).The model of myocardial injury was established by exhausting swimming.In IS group,the rats were subjected to exhausting swimming after intraperitoneal ixeris sonchifolia 20 g/kg.In ES and IS groups,8 rats were chosen at 6 and 24 h after exhaustion,and blood samples were taken from the inferior vena cava for determination of serum cardiac troponin I (cTnI) concentrations by ELISA.The animals were sacrificed after blood sampling and myocardial specimens were obtained for microscopic examination and for determination of mtTFA expression by Western blot.Results Compared with group C,the concentration of serum cTnI was significantly increased,and the expression of mtTFA in myocardial tissues was down-regulated at 6 and 24 h after exhaustion in ES and IS groups.Compared with group ES,the concentration of serum cTnI was significantly decreased,and the expression of mtTFA in myocardial tissues was up-regulated at 6 and 24 h after exhaustion in group IS.Conclusion Ixeris sonchifolia can reduce exhausting exercise-induced myocardial injury through up-regulating myocardial mtTFA expression in rats.

In this research, the zuelacmycin-producing strain Streptomyces venezuelaevar. qinlingensis RL-2 was used as original strain, the spore suspension of which was induced by UV, LiCl and the compound treatmeat (UV+LiCl) respectively. The zuelacmycin-high-yield strain UVL-108 was obtained by the treatment that the exposure time under UV irradition was 45 s and the concentration of LiCl was 0.4%. The heredity characters of mutant UVL-108 were stable in succesive six generations. The antibacterial activity and the fermentation titer of mutant UVL-108 were determinded by bidirectioned culture and mycelial linear growth respectively. The results demonstrated the antibaterial activity of mutant UVL-108 was improved by 77%, and the relative toxicity of fermentation to Phyricularia grisea was improved by two times compared with the original strain.

The study provide a theoretical basis for the industrial production of a elastase-high-yield strain which was isolated from the straw,and the selected strain was identified. The screening strategy included casein(skim milk) plate selecting and elastin(beef tendon) re-screening. And then,the morphological,physiological and biochemical characteristics as well as 16S rRNA sequence homology of the selected strain were studied. Finally,the strain LSF-97 which had a excellent decomposing ability to beef tendon was obtained. The results showed that the strain LSF-97 is relative to the Bacillus pumilus with 100 % similar in sequence under the phylogenetic tree,the morphological and physiological and biochemical characteristics are also consistent with pattern of bacteria. So it was identified as Bacillus pumilus.

Objective To investigate the effects of Inula Britannica on myocardial caspase-3 and cytochrome c ( cyt c) following overtraining-induced acute myocardial injury in rats.Methods Forty-eight male Wistar rats weighing 200-220 g were randomly divided into 3 groups:group control (group C,n =8) ; group exhausting swim (group E,n =24) and group Inula Britannica (group IB,n =16).The animal model of overtraining-indnced acute myocardial injury was developed by exhausting swim.The animals were forced to swim until they were exhausted.The animals sank to the bottom and no righting reflex or escape response was elicited when they were taken out of water in groups E and IB.In group IB oral Inula Britannica 25 ml/kg was given 24 h and immediately before overtraining.Blood samples were taken from inferior vena cava immediately and at 6,24 h after overtraining in group E and at 6,24 h after overtraining in group IB for determination of serum cardiac troponin I (cTnI) concentration (by ELISA).The animals were sacrificed after blood sampling and myocardial specimens were obtained for microscopic examination and determination of caspase-3 and cyt c expression (by immuno-histochemistry).Results Overtraining significantly increased serum cTnI concentration and up-regulated myocardial caspase-3 and cyt c expression in group E as compared with group C.Oral Inula Britannica significantly attenuated overtraining-induced increase in serum cTnI concentration and myocardial caspase-3 and cyt c expression in group IB as compared with group E.Conclusion Inula Britannica can reduce overtraining-induced acute myocardial injury by down-regulating caspase-3 and cyt c expression.

OBJECTIVETo determine the compound Daqiqi decoction( CDQD) combined cisplatin plays on the cell apoptosis of subcutaneous transplanted ovarian cancer in nude mice, to provide theory evidence for clinical treatment.

METHODMaking the models of subcutaneous transplanted ovarian cancer in nude mice, and divide the 40 mice with tumor into 5 groups (n = 8), the model control group, CDQD low dosed group, CDQD high dosed group, cisplatin group, cisplatin combined CDQD group, killing all the mice after 3 weeks' treatment and stripping tumors. Measure the volume and weight of the tumor and calculate tumor growth curve damps, the inhibition rate. Examining the expression of the Bcl-2(B-cell leukemia /lymphoma 2) and Bax (Bcl-2 associated x protein) mRNA and protein by the RT-PCR and the Western blot.

RESULT(O)The tumor weight shows that there was certain lighter effect in each CDQD group, and compared with cisplatin groups has no statistical significance, the cisplatin combined CDQD group is obviously lighter than that of the other group(P <0.01). The tumor growth curve damps shows that compared with model control group, the treatment group tumors had some extent narrowing (P < 0.01). (2) RT-PCR results: Bax (Bcl-2 associated x protein) mRNA expression shows that compared with model control group, the treatment group has increased (P < 0.01), and the cisplatin combined CDQD group compared with the other group is the highest, there was significant difference with the rest of the treatment group (P < 0.01). In the Bcl-2 mRNA express lowest in cisplatin combined CDQD group (P < 0.01), there has no difference between CDQD high dose group and cisplatin group. (Western blot shows: compared with model control group, the Bax protein of treatment group has increased expression (P < 0.01), the expression of Bax protein in cisplatin combined CDQD group is the highest(P < 0.01). There has no difference between CDQD high dose group and cisplatin group. The Bcl-2 protein expression of the cisplatin combined CDQD group is the lowest (P < 0.01), there has no difference between CDQD high dose group and cisplatin group.

CONCLUSIONThe effect of CDQD on subcutaneous transplantation ovarian tumor has promoting apoptosis function, its mechanism may be related to downgrade the Bcl-2 expression, higher expression of bax, stimulation on the apoptosis of tumor cells; cisplatin combined CDQD have synergistic effect.

Animals ; Cell Line, Tumor ; Cisplatin ; administration & dosage ; Disease Models, Animal ; Drug Therapy, Combination ; Female ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Neoplasm Transplantation ; Ovarian Neoplasms ; drug therapy ; genetics ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; metabolism ; bcl-2-Associated X Protein ; genetics ; metabolism

BACKGROUND: Biomechanical mechanisms are complex, and previous studiers focus on the stress conduction in the carpus. However, the stress distribution and characteristics of trabecula in the carpus are rarely reported.OBJECTIVE: To investigate the stress distribution and deformation characteristics of the normal lunate through a two-dimensional sagittal finite element model.METHODS: A normal cadaveric lunate sample was scanned with Micro-CT and the central sagittal image was chosen for further finite element analysis (FEA). The chosen image was processed and imported into the finite element analysis software (Ansys 14.0). A two-dimensional sagittal finite element model of the lunate bone was established. Axial pressure was applied to the model with the wrist held in different positions, and nine regions of interests (ROIs) were identified, for which stress and displacement nephograms were created. These included the first principal stress (S1, the maximum stress in a principal plane), the third principal stress (S3, the minimal stress in a principal plane), shear stress (SXY, the component of stress coplanar with a material cross section), von Mises stress (SEQV, yielding begins when the elastic energy of distortion reaches a critical value)and displacement of each ROI (UY, displacement on the vertical plane of the lunate) which were calculated and compared.RESULTS AND CONCLUSION: (1) The stresses on ROIs located in the proximal and volar cortices of the lunate bone were much higher than those in the distal and dorsal cortices. At the proximal lunate, S1 was less than S3; however at the distal lunate, S1 was greater than S3. The ROIs of the distal and proximal ends of the lunate bone received much higher stress than the ROIs of the middle part. As for axial trabecular displacement,both distal and proximal ROIs were compressed by axial pressure. However, the dorsal and the volar parts of the proximal lunate moved in different directions at different wrist postures. Besides, the stress values and magnitudes of displacement were elevated in wrist flexion and extension compared to neutral position.Furthermore, the stress concentration zones (the proximal volar ROI, the proximal dorsal ROI, the distal volar ROI, and the distal dorsal ROI) had different directions of shear stress and displacement in different wrist postures. (2) These results suggest that when stress is loaded on a normal lunate model, four stress concentration zones, the proximal volar ROI, the proximal dorsal ROI, the distal volar ROI, and the distal dorsal ROI are found. The wrist postures can significantly affect the value and distribution of axial stress on the sagittal lunate.