Objective To investigate distributions and drug resistance of pathogens in cirrhotic ascites comphcated with spontaneous bacterial peritonitis (SBP). Methods Results of bacterial culture and drug sensitivity tests of 117 aacitie specimens from cirrhotic patients with SBP were analyzed retrospectively. Results From the 117 ascitie specimens, 117 bacterial strains were isolated, among which 71 (60.68%)were gram-negative bacteria, 45 (38.46%) were gram-positive bacteria. The isolated strains were highly resistant to antibacterial agents, especially for Escherchia coli and Staphylococcu, the resistances to most antibiotics were above 60%. Conclusions High drug resistances were common for pathogenic bacteria in aacites of liver cirrhosis patients complicated with SBP.

A spore is another life cycle form of Bacillus anthracis for resisting starvation.When conditions are favorable for growth, the dormant spore will germinate,go through outgrowth, and are ultimately converted back into a growing cell. As the first step back to vegetative growth, germination could be induced by nutrients and a variety of non-nutrient agents. Nutrient germinants trigger cation release and water absorption by binding to receptors in the spore′s inner membrane.Then the spore′s peptidoglycan cortex is hydrolyzed and the spore core rehydrates, which allows the resumption of spore metabo-lism and macromolecular synthesis.This paper reviews the nutrient germinant receptor and cortex lytic enzymes in the spore germination process of B.anthracis.

Interferon (IFN) is one of the commonly used anti-HBV drug in clinic,in which IFN-λ is a new type of IFN,including IFN-λ1,IFN-λ2 and IFN-λ3 (also called IL-29,IL-28A and IL-28B,respectively).Researches in recent years show that IFN-λ3 (IL-28B) polymorphism seems to be involved in the onset of hepatitis B,the response to antiviral therapy and the outcome of HBV infection.This paper reviews the correlations between IL-28B polymorphism and the spontaneous clearance of HBV,the progression of HBV infection,the occurrence of liver cancer and the therapeutic effect of IFN treatment.

Objective Study the possible mechanisms of inhibiting hepatic fibrosis of IFN-? by observing the effects of IFN-? on the expression of smad3 mRNA in rat hepatic fibrosis model.Methods 70 rats were divided into three groups at random-fibrosis model group、IFN-? treatment group and normal control group.There are 30 rats in fibrosis model group which were induced to hepatic fibrosis by subcutaneous injection of carbon tetrachloride(CCl4) for 12 weeks.In the meantime,using IFN-? to treat the rats in IFN-? treatment group for 12 weeks.Histopathology changes and degree of fibrosis in livers of all rats were observed.Eventually,Smad3 mRNA were detected and quantified by real-time RT-PCR.Results In contrast with normal control group,the degrees of fibrosis in rat fibrosis model were significantly increased(P

Objective To explore methods of easy treatment of bulk trauma patients caused by Wenchuan earthquake.Methods Early treatment was done on 1123 patients including extremity injuries in 925,spinal injuries in 65,brain injuries in 46,thoracic injuries in 53 and abdominal injuries in 72.There were 809 patients with single part injury and 314 with multiple injury.Emergent operation was performed in 67 patients including 13 with liver repair,14 with spleenectomy,three with mesentery blood vessel repair,six with repair of multiple abdominal organ injuries,four with repair of raptured diaphragm and injured organs,12 with evacuation of intracranial hematoma,four with lung repair,five with partial resection of lung and bronchus,one with pericardium discission and five with internal fixation of ribs.Early operation was carried out in 166 patients including 105 with only debridement,36 with debridement plus external fixation and 25 with amputation.Results Of all,406 patients were cured,673 were transferred to higher level hospitals after fundamental treatment and three died.Conclusion Staged treatment is suitable for early management for bulk trauma patients.Damage control technique should be applied early for critically severe patients and those with severe disease of heart and lung.Repeated examination is efficient to avoid delayed diagnosis and treament.

Objective To compare the separation effects of protein samples extracted by two different methods with two -dimensional gel electrophoresis (2-DE) .Methods Ultrasonic disruption and glass-beads grounding were used to prepare protein samples of Gram-negative bacteria , Gram-positive bacteria and animal tissues .The actual results of the two sample preparation methods were compared by 2-DE.Results The 2-DE maps of samples extracted by the two methods were obtained.Conclusion The 2-DE maps of glass-beads grounding samples are better than those of ultrasonic disruption thanks to their lower backgrounds , which are beneficial for further image analyses .

Objective To construct sigF deletion mutant of Bacillus anthracis and the complementary strain of sigF deletion mutant in order to analyze the effect of losing sigF on formation of spores.Methods The spectinomycinadenyltransferase gene(spc) was inserted to replace sigF of B.anthracis by homologous recombination.A plasmid which contained sigF and sigF promotor was constructed and then transferred to the mutant to get a complementary strain of sigF deletion mutant.The characters of the mutant were analyzed by measuring growth curves, the ability of carbohydrate metabolism was compared, and spore formation was observed under a microscope.Results The sigF deletion strain A16D2△sigF was constructed from A16D2,which had a similar growth rate to the wild type A16D2 in logarithmic phase, but was not significantly different from the initial strain in the ability to use carbohydrates,although unable to form spores.The strain was found to maintain the state of asymmetric division by microfluidics experiment.Conclusion It is showed by this study that sigF is the essential gene of B.anthracis for spore formation, but not essential for vegetative growth.

Objective To investigate the application value and feasibility of enhanced recovery after surgery (ERAS) in thoracoscopic and laparoscopic esophagectomy for esophageal cancer.Methods The clinical data of 304 patients with esophageal cancer who were admitted to the Affiliated Cancer Hospital of Zhengzhou University from December 2013 and July 2014 were retrospectively analyzed.All the patients underwent esophagogastric partial resection, esophagogastric cervical anastomosis and 2-field lymph node dissection under general anesthesia.The management of 195 patients guided by ERAS were allocated to the ERAS group and 109 patients receiving perioperative traditional treatments were allocated to the control group.Observing indicators included : (1) enteral and parenteral nutritional support treatments;(2) nutrient indexs: levels of serum albumin (Alb) and prealbumin;(3) the recovery of gastrointestinal function: time to anal exsufflation and defecation;(4) postoperative complications and the grading according to Clavien standard;(5) duration of postoperative hospital stay and treatment expenses;(6) risk factors affecting postoperative complications by multivariate analysis;(7) independent risk factors affecting occurrence rate of postoperative complications by univariate analysis.Measurement data with normal distribution were presented as (x) ± s and analyzed using the t test.Nonnormal distribution data were analyzed by the Wilcoxon rank sum test.Comparison of repeated data was analyzed by the repeated measures ANOVA.Categorical variables were analyzed using the chi-square test or Fisher's exact probability.The multiple linear regression analysis and Logistic regression were used to measure the multivariate analysis of continuous variables and binary variable, respectively.Results (1) During the enteral and parenteral nutritional support treatments, 11 patients with surgery-related complications in the ERAS group didn't receive oral intake at postoperative day 1,26 proceeded the intravenous rehydration at postoperative day 4 due to calorie intake less than 80％ of calorie requirement, and enteral nutritional support treatment was well-tolerated in the control group.(2) Comparison of nutrient indexs : the levels of serum Alb and prealbumin at postoperative day 1, 3 and 5 were (37.2±3.9)g/L, (39.1 ±3.5)g/L, (38.5 ±3.0)g/L and (0.20 ±0.06)g/L, (0.13 ±0.04)g/L, (0.13 ±0.04)g/L in the ERAS group, (37.7 ±2.8)g/L, (39.0 ±3.6)g/L, (38.4 ±3.8)g/L and (0.18 ± 0.06) g/L, (0.13 ± 0.04) g/L, (0.13 ± 0.04) g/L in the control group, respectively, showing no significant difference in the postoperative changing trends between the 2 groups (F =0.357, 0.453, P ＞ 0.05).(3) The recovery of gastrointestinal function : time to first anal exsufflation and first defecation were (2.1 ± 0.8) days and (3.4 ± 1.2) days in the ERAS group, (3.2 ± 0.9) days and (5.5 ± 1.5) days in the control group, respectively,showing significant differences between the 2 groups (t =-10.505,-13.174, P ＜0.05).(4) There was no death in the perioperative period.The overall incidences of postoperative complications and number of patients with severe complications were 26.15％ (51/195) and 8 in the ERAS group, 30.28％ (33/109) and 8 in the control group, with no significant difference between the 2 groups (x2=0.594, 1.469, P ＞ 0.05).Eight and 10 patients in the ERAS and control groups underwent gastrointestinal decompression, 6 and 8 patients in the ERAS and control groups underwent retreatment in the intensive care unit (ICU), 3 and 2 patients in the ERAS and control groups were readmitted to the hospital at 3 weeks after discharge, with no significant difference in the above indexes (x2=0.185, 2.892, P ＞0.05).(5)The duration of postoperative hospital stay and treatment expenses were (6.8 ±2.4)days and (25 088 ±10 336)yuan in the ERAS group, (11.1 ±3.4)days and (38 819± 14 854)yuan in the control group, showing significant differences between the 2 groups (t =-12.782,-9.452,P ＜ 0.05).(6) The age, gender, preoperative weight loss ＞ 10％, tumor staging, tumor differentiation,neoadjuvant chemotherapy and time of food intake were risk factors affecting incidence of postoperative complication in patients with esophageal cancer by the univariate analysis (x2=2.484, 2.333, 0.061, 8.553,2.459, 0.163, 3.462, P ＜ 0.05).(7) The age, preoperative weight loss ＞ 10％, tumor staging and neoadjuvant chemotherapy were independent risk factors affecting incidence of postoperative complication in patients with esophageal cancer by the multivariate analysis (OR =0.365, 10.761,0.290, 8.140, 95％ confidence interval :0.198-0.671, 4.122-28.095, 0.130-0.645, 3.946-16.791, P ＜0.05), but time of food intake was not an independent risk factor (OR =0.540, 95％ CI: 0.280-1.041, P ＞ 0.05).Conclusions ERAS in the esophageal minimally invasive surgery for esophageal cancer is safe and feasible, with the advantages of shorter recovery time of gastrointestinal function and duration of hospital stay, lower treatment expenses and a better application value compared with traditional treatment.

AIM: To observe the expression change of growth and differentiation factor 10 ( GDF10 ) in the spinal cord of the rats with neuropathic pain .METHODS:Male SD rats (n=60) were used.The neuropathic pain was induced by ligation of left L 5 spinal nerves of the animals .The paw withdrawal threshold was detected 1 d before surgery , and 0 d, 1 d, 3 d, 10 d and 21 d after surgery.The changes of GDF10 in the dorsal horn of L5 spinal cord were detected by immunofluorescence staining and Western blot .RESULTS:The paw withdrawal threshold of the rats with spinal nerve ligation was decreased from 1 d after surgery until 3 d with obvious difference compared with the na ve rats ( P<0.05 ) , continuously decreased until 10 d, and then stabilized at 21 d.The GDF10 was located in the cytoplasm of the neurons in the dorsal horn of L5 spinal cord detected by immunofluorescence staining .The expression of GDF10 in L5 dorsal horn de-tected by immunofluorescence staining was reduced after surgery , significantly decreased from 10 d ( P<0.05) until more than 21 d after surgery in spinal nerve ligation group compared with na ve group.GDF10 in L5 spinal cord detected at 10 d after surgery by Western blot was significantly down-regulated in spinal nerve ligation group compared with na ve group (P<0.05).CONCLUSION:Spinal nerve ligation induces the decrease in GDF 10 expression in spinal dorsal horn .The down-regulation of GDF10 may contribute to the regulation of hyperpathia caused by mechanical stimulation after the injury of spinal nerve .

Esophageal cancer is located in the 8th position of the incidence of malignant tumors and the 6th most common cause of cancer-related mortality in the world, while China has the highest incidence and mortality of esophageal cancer. Esophageal squamous cell carcinoma (ESCC), the predominant histologic type of esophageal cancer in China, accounts for about 90%. Despite recent improvement of surgical techniques and philosophy, however, the prognosis of ESCC patients treated with surgery is still poor, and 5-year survival remains unsatisfactorily low. So far, the pathogenesis of esophageal squamous cell carcinoma is still unclear, and effective prevention is also out of the question. To find the main factors affecting the prognosis of esophageal squamous cell carcinoma, and to improve the survival of patients, are the main directions of all scholars. Postoperative pathology of esophageal squamous cell carcinoma is considered to be one of the most important predictors of prognosis. Currently, the evaluation of postoperative esophageal prognosis mainly depends on TNM staging, but some criteria of its specific content and staging remains controversial. In this paper recent domestic and foreign related researches and clinical trials reports are collected, and the postoperative pathological features affecting esophageal squamous cell carcinoma prognosis were reviewed.