7721.Conclusion: This study demonstrates that the expression of ?ig-h3 mRNA in hepatoma cell lines is higher than that in normal liver cell QZG,which provides a sound basis for exploring the function of ?ig-h3 in processes of adhesion and metastasis of human hepatoma cells.

Objective:To observe immunological mechanism of CMXR in the rat free fetal bowel transplant to mouse.Methods:Two groups were established including allogroup and xenogroup.Pathological changes of grafts in each group were examined.Expression of TH type cytokines mRNA and phenotypes of infiltrating cells intragraft were detected by in situ hybridization histochemistry and immunohistochemistry methods respectively.Results:(1)Survival rates of allogroup transplants were higher than those of xenogroup( P

Objective To investigate the effect of S-phase kinase-associated protein 2 antisense oligodeoxynucleotide (Skp2 ASODN) on the growth and proliferation of colorectal cancer cells SW480 and its mechanism .Methods The liposome-mediated dif-ferent concentrations of Skp2 ASODN was adopted to transfect SW480 cells ,the final concentrations of 0 .050 ,0 .125 ,0 .250 ,0 .500 , 1 .000 ,2 .000 ,4 .000 μmol/L were respectively set up with Skp2 nonsense oligodeoxynucleotides(NSODN) and blank group as con-trol .Then the inhibited effect of growth and proliferation of colorectal cancer cells were measured by the inverted microscope obser-vationandmethylthiazolyltetrazolium(MTT),thecellcyclewassurveyedbytheflowcytometry(FCM).TheexpressionofmRNA and protein of Skp2 and P27kip1 were inspected by reverse transcription-polymerase chain reaction(RT-PCR) and immunocytochem-istry methods .Results The inverted microscope observed that the SW480 cells had no change in form and grew at a slower speed . When the Skp2 ASODN concentration reached 0 .125 μmol/L ,the inhibition rate was 14 .48% (P<0 .05) .As the Skp2 ASODN concentration increase ,its inhibition action on the growth and proliferation of SW480 cells was enhanced in a dose-dependent man-ner(P<0 .01) .The SW480 cells were increased in G0/G1 phase(P<0 .01) and decreased in S phase(P<0 .05) ,the progression of cell cycle was blocked .RT-PCR and the immunocytochemistry showed that both Skp2 mRNA and protein levels were down-regula-ted(P<0 .05) .Although the P27kip1 mRNA level had no change(P>0 .05) ,but its protein expression was elevates obviously (P<0 .01) .Conclusion Skp2 ASODN can inhibit the growth and proliferation of SW480 cells .Its possible mechanism is that the ubiq-uitin degradation of the Skp2 to P27kip1 is decreased by the gene occlusion effect of Skp2 ASODN ,thus the cell cycle progression is arrested .

This paper analyzed the disadvantages of traditional model in clinical surgery education,introduced the concept,basal evaluating methods and effects of evidence-based medicine and discussed the methods of evidence-based medicine education in clinical surgery teaching.

砄bjective: To evaluate the diagnostic significance of exfoliative cytological examination and micronucleus assay. Methods: 26 cases of leukoplasia (LK) and 18 cases of oral squamous cell carcinoma (SCC) were examined. Cells were scrapped from the lesions, stained with Papaniceolaou. The keratinization types and the configuration of the cells were studied. Smears were also stained using the Feulgen plus fast green method. The frequency of micronucleated cells was counted. Results: Mixed keratinization was observed in all 15 cases of LK without dysplasia and in 7 out of 11 cases of LK with dysplasia. Parakeratosis was found in 17 out of 18 cases of SCC. There was a significant difference of cell keratinization types and cytologic diagnosis between the cases of LK and SCC( P 0.05).Conclusion: Parakeratosis in oral exfoliative cells may indicate a high risk of malignance.

OBJECTIVE:To observe therapeutic efficacy of ulinastatin in the treatment of acute pancreatitis. METHODS:A to-tal of 80 acute pancreatitis patients were randomly divided into control group and observation group,with 40 cases in each group. Control group was given conventional treatment as gastrointestinal decompression,analgesia and spasmolysis,anti-infective treat-ment,fluid replacement,electrolyte disturbances balance,in vivo microcirculation improvement;observation group was additional given ulinastatin 100 000 U added into 5% Glucose injection 250 ml,ivgtt,bid,on the basis of control group,and then given medicine qd after improving symptoms;finally,stopped taking medicine immediately the symptom disappeared. Both groups was given 8d of treatment. Serum levels of IL-6 and TNF-α were observed in 2 groups before and after treatment,and clinical symp-tom,the time of sign and lab index improvement were also observed. Clinical efficacy was evaluated. RESULTS:After treatment, serum levels of IL-6 and TNF-α in observation group was significantly lower than in control group;the time of clinical symptom and sign,lab indicator improvement were significantly shorter than in control group,with statistical significance(P<0.01). The ef-fective rate (95.00%) of observation group was significantly higher than that (70.00%) of control group,with statistical signifi-cance(P<0.05). CONCLUSIONS:Ulinastatin can significantly reduce acute pancreatitis significantly,improve clinical symptom, promote disease recovery and clinical efficacy.

Objective To study the relationship between serum retinal binding protein 4 (RBP4) level and acute cerebral infarction,and to analyze the correlation between RBP4 level and the related risk factors of acute cerebral infarction.Methods One hundred and sixty patients with acute cerebral infarction were chosen as observation group,and 80 cases of contemporaneous healthy examined people were selected as control group.The levels of serum RBP4,body mass index (BMI),fasting blood glucose (FBG),fasting serum insulin (FINS),glycosylated hemoglobin (HbA1c),total cholesterol (TC),triglyceride (TG),high density lipoprotein cholesterol (HDL-C),low density lipoprotein cholesterol (LDL-C) and blood pressure after admission of each group were measured.Statistic analysis was processed between the level of serum RBP4 and acute cerebral infarction or related risk factors.Results The level of serum RBP4 in observation group was increased compared with that in control group [(41.68 ± 5.12) mg/L vs.(23.84 ± 3.26) mg/L],and there was significant difference (P ＜ 0.01).The Pearson relative analysis showed positive correlation between the level of serum RBP4 and related risk factors of acute cerebral infarction FBG,FINS,LDL-C,BMI,systolic pressure.The Logistic stepwise regression analysis suggested that BMI,LDL-C and age were independently associated with the level of serum RBP4.Conclusion RBP4 plays an important role in the incidence of acute cerebral infarction,high RBP4 level may be one of the dangerous factors of acute cerebral infarction patients and could provide reference to prevents the cerebral infarction.

Objective An analytic method with rephase high pressure liquid chromatogrophy(RP-HPLC) was developed to determine the residue of deltamethrin in water.Methods Water sample was filtrated and determined by RP-HPLC.Chromatographic column was YMC C_(18)(250 mm?4.6 mm,5?m),mobile phase was methanol:water=90:10(V/V),the flowing rate was 0.8 ml/min, DAD detecting wavelength was 205 nm.Results The regression equation was y=655.6 x-1.8,r=0.999 99.The lowest detectable concentration was 2.9?g/L.The recovery rate was 98.0%-102.0%and the relative standard deviation was 0.29%-0.48%. Conclusion The method is proved to be satisfactory in precision,accuracy and sensitivity and can be used for the rapid determination of deltamethrin residue in water.

Recent original articles about investigation and application minimally invasive posterior pedicle screw fixation in thoracolumbar fracture were extensively reviewed.It can be divided into three parts,such as the improvement of navigated pedicle screw placement accuracy,the melioration of the internal fixation instruments and the advance of endoscopic decompression technique.With the development of minimally invasive spinal syrgery,the combination of percutenous pedicle screw fixation and the computer assist surgery have been widely applied in the treatment of spinal fractures.The combination of minimally invasive posterior pedicle screw fixation and the computer assist surgery accelerates the treatment of the thoracolumbar fractures,there will be more and more thoracolumbar fracture patients willing to be treated by the minimally invasive surgery.

Objective To establish and evaluate the method for detection of methicillin-resistant Staphylococcus aureus (MRSA) by the cefoxitin disk diffusion test.Methods The disks with 30 microgramme of cefoxitin and oxacillin recommended by NCCLS were used for the detection of MRSA with PCR by using mecA as the reference.The MIC of cefoxitin to Staphylococcus aureus was also determined.Results Of the 145 test isolates of Staphylococcus aureus,83 isolates showed the mecA-positive by PCR,62 isolates were negative.In cefoxitin disk diffusion tests,82 isolates showed MRSA-positive and 63 isolates were negative.The sensitivity was 98.8% and the specificity was 100%.In oxacillin diffusion tests,the sensitivity was 95.2% and the specificity was 96.8%.Conclusions For the detection of MRSA,the cefoxitin disk diffusion test was consistent with the results by PCR for mecA.The cefoxitin disk diffusion test is easy to be performed and can be used in routine diagnostic works.