ObjectiveTo study the changes and clinical significance of DNA ploidy,S-phase fraction(SPF),proliferating index(PI) in colorectal carcinoma.MethodsIn 40 cases of colorectal carcinoma (colorectal carcinoma group ),40 cases corresponding cancer-adjacent tissue (cancer-adjacent tissue group ),12 cases of precancerous lesions (precancerous lesions group) and 10 cases of normal colorectal mucosa coli (normal colorectal mucosa coli group),DNA ploidy,SPF and PI were detected with flow cytometry and compared.ResultsDNA diploid was 7 cases,DNA heteroploid was 33 cases in colorectal carcinoma group,35,5 cases in cancer-adjacent tissue group,10,2 cases in precancerous lesions group,10,0 case innormal colorectal mucosa coli group,there were significant differences among them(P＜ 0.01 ).SPF and PI in colorectal carcinoma group (35.36 ± 7.45,42.92 ± 6.81 ) were significantly higher than those in cancer-adjacent tissue group (20.82 ±5.51,31.34 ±4.88),precancerous lesions group (21.13 ± 5.07,31.70 ±5.59) and normal colorectal mucosa coli group ( 19.93 ± 3.73,32.01 ± 4.99),there were significant differences among them(P＜ 0.01 ).DNA ploidy was significantly correlated with Dukes staging (P=0.027) and the differentiation of colorectal carcinoma (P =0.030).ConclusionsDNA ploidy,SPF,PI may get some molecular biologycharacteristic and proliferation activity of colorectal carcinoma at molecule level,which may be helpful for treatment and evaluation of prognosis of colorectal carcinoma.

Objective: To study the structure property of a superfine melt blow(MF) non woven material for making medical masks and its filtering functions. Methods: Five kinds of masks were tested and they were: 20 layer gauze mask, cotton spunlace mask, MF outpatient mask, MF medical protective mask Ⅰ and MF medical protective mask Ⅱ. Scanning electron microscope was used to observe the structure of the filtering materials. The aperture of the materials was measured and the filtering efficacy was tested. Results: The diameter of MF fibers was less than 3 ?m and the material made from it was randomly distributed with multi curve channels and complex structure. The filtering efficacy of the new material was 96.2% 99.5% for ambient aerosol particles with a diameter of 0.3 ?m, while the efficacy of 20 layer gauze mask was 50.9%. As for respiratory resistance the former was 26 43 Pa and the later was 48 Pa. Besides, MF mask had good humid proof function and the character of electronic charge, and the later could help capture the particles. Conclusion: The new masks made from MF material has good filtering function and low respiratory resistance, which can be used to prevent SARS virus.

Exchange maintenance methods of Hitachi electron microscope H-600 faults, master the workflow of vacuum system, and improve maintenance level together. Analyzed some cases of troubleshooting to Hitachi electron microscope H-600, collected troubleshooting skills, and gives related solutions.

ObjectiveTo analysis the different types of bacteria in patients with a varying severity of acute cholangitis.Methods241 patients who presented with actue cholangitis between Jan 2008 to Oct 2011 to our hospital were retrospectively studied.These patients were divided into three groups according to the Tokyo Guideline.The bile specimens were obtained intraoperatively.The parameters were compared by SPSS 16.0 package program for statistical analysis.Results75.1 percent of the patients were positive for bacteria in the bile.There were 241 strains of bacterium which included 139 Gram-positive bacteria,99 Gram-negative bacteria and 6 strains of microzyme.Escherichia coli,Enterococcus faecalis,Enterococcus casseliflavus,Pseudomonas aeruginosa and Klebsiella species were the most frequently isolated bacteria.The positive rates for bacteria were significantly different between patients with mild and severe cholangitis (P＜0.05).There was no significant difference between patients with moderate and mild cholangits (P=0.141),or moderate and severe cholangitis (P=0.647).Gram-negative bacteria were more common than Gram- positive bacteria in patients with moderate and severe acute cholangitis (P＜0.05).In patients with moderate and severe acute cholangitis,there was more patients with multiple and mixed bacterial infection.ConclusionsEscherichia coli and Enterococcus species were more common in patients with acute cholangitis.The positive rate of bacteria in the bile in severe acute cholangitis was higher than that in mild acute cholangitis.In patients with moderate and severe cholangitis,Gram-negative bacterial infections and multiple and mixed bacterial infections were more common.

Objective To study the expression of P57kip2 and its clinical significance in hilar bile duct adenocarcinoma.Methods The expressions of P57kip2 in hilar bile duct adenocarcinoma tissues (37 cases) and normal bile duct tissues (32 cases) were determined by immunohistochemical SP methods.The relations between the expression levels of P57kip2 with clinicopathologic parameters were analyzed.Results The positive rate of P57kip2 was 43.2％ (16/37) in bile duct adenocarcinoma,while it was 87.5％ (28/32) in normal duct tissues (P ＜0.01).The expression level of P57kip2 in adenocarcinoma showed no significant association with gender,age or CA19-9 level (P ＞0.05),but they were significantly related with lymph node metastasis,invasion and degree of differentiation (P ＜ 0.05).Conclusions P57kip2 is associated with the occurrence and development of hilar bile duct adenocarcinoma.It may play an important role in invasion and metastasis of hilar bile duct adenocarcinoma.The P57 protein can be used as an index to diagnose hilar bile duct adenocarcinoma.

Objective:To explore the relationship between tissue factor (TF),tissue factor pathway inhibitor (TFPI) and the severity in patients with diabetic cerebral infarction.Methods: 226 patients with diabetic cerebral infarction were included into the study,National Institute of Health Stroke Scale ( NIHSS) was used to evaluate the severity of CIS.The single factor analysis and multiple regression analysis were used to explore the relationship between TF , TFPI and the severity.Results: The concentrations of TF,TFPI,TF/TFPI,cholesterol and triglyceride in the NIHSS≤12 group were significantly lower than that in the NIHSS>12 group ( P<0.05);the NIHSS was significantly positive correlate with TF (r=0.354,P=0.012),TFPI (r=0.302,P=0.027),TF/TFPI (r=0.410,P=0.000),cholesterol (r=0.364,P=0.006) and triglycerides (r=0.334,P=0.018);Multiple linear regression analysis showed that the TF , TFPI, TF/TFPI, cholesterol were independent risk factors of the severity in patients with diabetic cerebral infarction.Conclusion:The level of TF and TFPI could reflect the severity in patients with diabetic cerebral infarction according to the NIHSS.

Objective To study the clinical effective durations of a medical injected collagenous products, a high-purity medical injectable collagen filling agents extracted from bovine leather (Fumeida Produced by Changchun Botai Pharmaceutical Biotechnology Co, Ltd). Methods 30 subjects (60 sides) with moderate to severe nasolabial fold wrinkles were selected to perform a clinical observation, in which 49 sides with moderate and 11 sides with severe labial fold wrinkles, and the average age of subjects were (41. 80 ± 8. 03) years. 1 ml of medical collagen was injected into the subjects wrinkle on each side by surgeons. The follow-up was made immediately, 7, 30, 90, 150 and 360 days after injection. The photograph was taken, and the image data and the validity were analyzed. Results The follow-up rate of immediate to 150 days after injection was 100 %, and 93. 3 % after 350 days. At the each follow-up points, the total effective rates were as follows: 100. 0 %, 100. 0 % , 96. 7 %, 90. 0 %, 83. 3 % and 44. 6 % .respectively. There were dry lips with herpes simplex in two cases of subjects at 7 d and 90 d after injection, no redness, induration, exudate, ulceration or other abnormal performance on collagen injection zone in the other subjects at each follow-up time point. Conclusion In this study, there is the longer clinical effective duration of injected collagen used in filling wrinkles with satisfactory results.

Objective To explore the influencing factors of gastrointestinal bleeding(GB) in secondary prevention patients with cerebral ischemic stroke(CIS).Methods A total of 616 patients were divided into bleeding group and control group according to the status (yes,no) of suffering GB during the 2years follow-up.Single factor analysis and Logistic regression analysis was used to explore the influencing factors of GB in CIS patients.Results The proportion of age≥65,a history of GB,gastric disease,renal insufficiency,sudden onset,NIHSS ≥12 and CIS ≥2 in the bleeding group was significantly higher than that in the control group (P ＜ 0.05) ; The proportion of combined with statins,proton pump inhibitors and gastric mucosal protective agent in the bleeding group was significantly lower than that in the control group (P ＜0.05) ; The Logistic regression analysis showed that age≥65,a history of GB,gastric disease,renal insufficiency,sudden onset,NIHSS≥12 and the times of CIS≥2 were risk factors of GB; however,combined with statins,proton pump inhibitors were protective factors.Conclusions Aging,a history of GB,gastric disease,sudden onset,higher NIHSS score and the times of CIS ≥ 2 were the risk factors of GB,combined with statins and proton pump inhibitors could reduce the risk of GB.

Objective To study the clinical efficacy of splenectomy plus porta-azygous devascularization in the treatment of portal hypertension using either the hand-assisted laparascopic (HALS) or the laparoscopic approaches.Methods The clinical data of 30 cases of portal hypertension treated between January 2008 and June 2012 were enrolled in this study.16 patients underwent HALS and 14 patients underwent traditional laparoscopy approach.Results All the operations were successfully accomplished.The mean operation time of the HALS group was significantly shorter than the traditional laparoscopic group (270 min vs 350 min,P＜0.05).Intra-operative blood loss of the HALS group was significantly less than the traditional laparoscopic group (250 ml vs 370 ml,P＜0.05).The median overall costs were significantly lower in the HALS group (30000 RMB vs 35000 RMB,P＜0.05).There were no significant differences in the time to return to oral diet,the length of hospital stay,and the time to passage of flatus.The complication rates between the two groups were similar.Conclusion Hand-assisted laparoscopic surgery had the advantages over conventional laparoscopic surgery in minimal invasiveness,safety,and quicker postoperative recovery.

ObjectiveTo evaluate the association between alveolar dead space fraction and the prognosis of patients with acute respiratory syndrome in the early phase ( ＜ 3 days).MethodsTwentythree patients with ARDS were enrolled in this study.The VD/VT was measured by the single breath test of CO2 (SBT-CO2).The age,heart rate,mean arterial pressure,APACHE Ⅱ,Murray lung injury score,functional residual capacity ( FRC ),PaO2/FiO2,tidal volume,airway plateau pressure ( Pplat ),static pulmonary compliance (Cst),28-day mortality were recorded.ResultsThe alveolar dead-space fraction was markedly elevated (0.59 ±0.06) and the mean FRC was markedly decreased (1643 ±409) ml in the early phase of ARDS.The mortality of 28 days was 52.2％.The mean dead-space fraction was significantly higher in non-survived patients than that in survival [(0.64 ± 0.08 ) vs.(0.53 ±0.04 )].VD/VT was correlated significantly with Murray lung injury score ( r=0.464,P =0.026).The area under the ROC curve for dead space fraction was 0.867,with sensitivity of 83％,and specificity of 82％.Conclusions Increased alveolar dead-space fraction of patients in the early phases of ARDS is associated with greater risk of death.