Objective To investigate the academic level and influence of the Chinese Journal of Digestive Surgery from the point of articles published and the authors.Methods The articles and authors of Chinese Journal of Digestive Surgery from 2002 to 2012 were retrieved from the Wanfang database and the China National Knowledge Internet database.The full texts were browsed and saved,and then the data were input to Excel for bibliometric analysis.Results There were 1917 articles were published in the Chinese Journal of Digestive Surgery during the past 11 years,and the average number of articles per issue was 29.05.The rate of articles with funded projects was 30.62％,and the citation rate was 58.52％.Authors were from 32 provinces,municipalites and Hong Kong.The numbers of articles contributed by authors from Chongqing,Beijing and Shanghai ranked top 3,which were 446(23.27％),240(12.52％) and 203(10.59％),and followed by authors from Sichuan,Jiangshu and Guandong.The number of articles from affiliated hospitals of Medical Schools was 1382 (72.09％).The cooperation rate was 4.37,and the coauthor rate was 90.03％.Conclusions Chinese Journal of Digestive Surgery is an academic journal with high quality and strong influence.The distribution of authors of the Chinese Journal of Digestive Surgery is wide,and the cooperative rate of authors is high,while the distribution of authors is disproportionate.

Objective To evaluate the relationship between 5,10-Methylenetetrahydrofolate reductase(MTHFR) gene polymorphisms and colorectal cancer(CRC).Methods Studies were selected based on the criteria for inclusion.The Meta-analysis software,REVMAN 4.2,was applied for checking the heterogeneity across the studies and calculating the pooled OR.The results were evaluated by the analyses of publication bias and sensitivity.Results A total of 9 787 cases and 12 986 controls from 18 studies for C677T and a total of 4 422 cases and 5 819 controls from 9 studies for A1 298C were included.No heterogeneity among the studies was found.For codon 677,the frequencies of CC,CT and TT genotypes were 46.48%,43.81% and 9.71% in cases,and 45.03%,43.08% and 11.89% in controls,respectively.The pooled OR of TT vs.CT+CC was 0.80(95%CI 0.74～0.87).For codon 1 298,the frequencies of AA,AC and CC genotypes were 53.60%,39.39% and 7.01% in cases,and 53.31%,38.67% and 8.03% in controls,respectively.The pooled OR of CC vs.AC+AA was 0.84(95%CI 0.72～0.97).Conclusions MTHFR 677TT is at lower risk of developing CRC and 1 298CC genotypes might be associated with the decreased risk of developing CRC.

OBJECTIVE To investigate the resistance of clinical isolated strains to the commonly used antibacterials in our hospital 2007-2008.METHODS Clinical isolated strains and sensitivity of drugs were detected by ATB system.The result of drug sensitivity was judged by CLSI standard and analyzed with statistical software WHONET5.3.RESULTS Altogether 3150 strains bacteria were isolated,17.4% were Gram-positive strains and 82.6% were Gram-negative strains,and the top five isolates were Pseudomonas aeruginosa,Escherichia coli,Klebsiella pneumoniae,Acinetobacter baumannii,and Staphylococcus aureus.The reasistance rate of Gram-positive strains to minocycline was 15.4%.Five VRE strains were isolated.Various Enterobacteriaceae bacteria were sensitive to imipenem meropenem,cefoperazone-sulbactam and piperacillin-tazobactam,and their rate was 86.5% to 97.7%.Some of Acinetobacter and Stenotrophomonas maltophilia were multidrug resistant.CONCLUSIONS It is serous that multidrug resistance of isolated strains of the patients exists in our hospital.

Objective To explore the risk factors of diabetic nephropathy.Methods According to the excretion rate of proteinuria,90 patients were divided into 3 groups:normal diabetic proteinuria group (DM),diabetic micro-proteinuria group (DN1),and clinical diabetic proteinuria group (DN2).We compared patients'ages,diabetic course,cholesterol,triglyceride,glycosylated hemoglobin,high density lipoprotein cholesterol (HDL),low density lipoprotein cholesterol (LDL),serum p-selectin,serum C-reactive protein,urinary monocyte chemotactic protein,and proteinuria excretion rate.Logistic regression analysis was used to analyze the relation between DN and various factors.Results Differences among these groups were statistically significant in type 2 diabetic course,HDL,LDL,p-selectin,C-reactive protein,glycosylated hemoglobin,and urinary monocyte chemotactic protein (P ＜ 0.05).Logistic regression analysis showed that diabetic course,LDL,C-reactive protein,p-selectin,and urinary monocyte chemotactic protein were independent risk factor (OR values were 2.238,1.062,6.723,1.166,and 1.046).Conclusions Occurrence and severity of DN had relationship with course of diabetes,microvascular lesions,and inflammatory reaction.Emphasis on monitoring and evaluation of the DN-related factors would contribute to the prevention and treatment of DN.

Objective To investigate the effects of multiple doses of propofol or/and monosialotetrahexosyl ganglioside (GM1) on cognitive function and caspase-3 expression in immature rats.Methods Seventy-seven immature SD rats,17-18-day old and weighted 33-40g,were randomly divided into 7 groups (11 each):control group (NS),propofol 50mg/kg group (P50),propofol 100mg/kg group (P_ 100 ),propofol 200mg/kg group (P_ 200 ),GM1 10mg/kg group (G),propofol 100mg/kg and GM1 10mg/kg group (P_ 100 G),and propofol 200mg/kg and GM1 10mg/kg group (P_ 200 G).Each group received normal saline,propofol 50mg/(kg?d),100 mg/(kg?d),200mg/(kg?d),GM1 10mg/(kg?d),propofol 100mg/(kg?d) and GM1 10mg/(kg?d),or propofol 200 mg/(kg?d) and GM1 10mg/(kg?d) intraperitoneally in a bolus or divided doses,respectively,for 6 consecutive days.The tests of learning and memory were performed in Morris water maze everyday at the 3rd hour after the rats waked up from anesthesia.The animals were sacrificed on the 6th day after the Morris water maze test to obtain the brain specimen,and the expression of caspase-3 was detected by immunohistochemistry and Western blotting.Results Latency period of water maze test was significantly longer in groups P_ 100,P_ 200 and P_ 200 G than in group NS,and the frequency of crossing platform were fewer in P_ 100,P_ 200 and P_ 200 G groups (P

Objective To assess the risk factors that could influence the severity of esophageal inju- ry in patients with gastroesophageal reflux disease(GERD).Methods GERD patients diagnosed on the ba- sis of endoscopic reflux esophagitis or pathological results of 24 hour esophageal pH monitoring were divided into three groups as non-erosive reflux disease group(NERD)(n=83),mild esophagitis group(n=51) and severe esophagitis group(n=22).The clinic data and esophageal pH parameters were recorded in the three groups.A logistic regression was used to assess the joint influences of clinic characteristics,hiatus her- nia,and esophageal pH parameters on the severity of esophageal injury.Results Patients in severe esoph- agitis group were more likely to have advanced age and hiatus hernia.The number of supine long reflux epi- sodes measured by esophageal pH monitoring significantly increased with increasing grades of mueosal dam- age(P

Autopsy ; Female ; Hepatoblastoma ; diagnosis ; diagnostic imaging ; pathology ; Humans ; Infant, Newborn ; Liver Neoplasms ; diagnosis ; diagnostic imaging ; pathology ; Neoplasm Staging ; Rare Diseases ; Tomography, X-Ray Computed

Flexible matching has recently been proposed as a method of improving interactions efficiency. In this study, the concept of flexible matching has been introduced, and the applicability of this strategy has also been described based on the power calculation of interaction between HER-2 polymorphism and smoking with breast cancer. A large-sample approximation method is used to estimate the power and efficiency of gene-environment interactions. In the basic scenario, power of interaction between HER-2 polymorphism and smoking of unmatched case-control study appears to be 30% while in the frequency matching case-control study it is 56%. However, when increasing the smoking prevalence in controls, greater power can be obtained (power=74%). Conclusions: Flexible matching strategies can increase the power and efficiency of case-control studies to detect and estimate the gene-environment interactions when compared with traditional frequency matching and it is especially useful under those scenarios when low environmental exposure of population, adverse gene-environment interactions or less paired controls are seen. Optimal matching design should be made available by weighing the benefits and loss due to flexible matching.

Interaction assessment is an important step in epidemiological analysis. When etiological study is carried out, the logarithmic models such as logistic model or Cox proportional hazard model are commonly used to estimate the independent effects of the risk factors. However,estimating interaction between risk factors by the regression coefficient of the product term is on multiplicative scale, and for public-health purposes, it is supposed to be on additive scale or departure from additivity. This paper illustrates with a example of cohort study by fitting Cox proportional hazard model to estimate three measures for additive interaction which presented by Rothman.Adopting the S-Plus application with a built-in Bootstrap function, it is convenient to estimate the confidence interval for additive interaction. Furthermore, this method can avoid the exaggerated estimation by using ORs in a cohort study to gain better precision. When using the complex combination models between additive interaction and multiplicative interaction, it is reasonable to choose the former one when the result is inconsistent.

For most variety of vaccines, two types of effects-direct and indirect, can result from immunization programs. Unimmunized individuals in the population that receive immunization program can benefit from the vaccines in addition to the protection from immunization.The classical vaccine trails allocate individuals into study and control arms with individual randomization, so the programs' cost-benefit is underestimated due to the impossible measurement on indirect effect. The objectives of the present work are to introduce the conceptual framework,developed by Halloran et al, for four types of study designs that differentiate and account for direct,indirect, total and overall effects of intervention programs, and to explain the relationships of these effects as well. With the examples of field trails of oral cholera vaccines in Bangladesh and Vi typhoid vaccine in India, further issues refer to the identification of indirect effect. The application in practice is also discussed.