Objective To investigate the surgical treatment of gastrointestinal stromal tumor (GIST) based on the clinical characteristics of GIST in different locations.Methods The clinical data of 486 GIST patients who received surgical treatment at the Peking Union Hospital from January 2003 to December 2012 were retrospectively analyzed.There were 461 patients with primary GIST and 25 with secondary GIST.The clinical characteristics and surgical treatment methods were analyzed.All data were analyzed using the chi-square test.Results Of the 461 patients with esophageal stromal tumors,6 received partial esophagectomy.Of the 234 patients with gastric stromal tumors,183 received partial gastrectomy,23 received proximal gastrectomy + cardiectomy,23 received distal gastrectomy,2 received total gastrectomy and 3 received exploratory laparotomy.Of the 51 patients with duodenal stromal tumors,34 received partial duodenectomy,9 received pancreatico-duodenectomy,5 received pylorus-preserving pancreaticoduodenectomy,3 received palliative surgery.Of the 116 patients with small intestinal stromal tumors,110 received partial small intestinal resection and 6 received palliative surgery.Of the 29 patients with rectal stromal tumors,13 received posterial transsphincteric surgery of the rectum,12 received transanal local resection of rectal tumors and 4 received abdominoperineal resection; laparotomy was performed on 25 patients with GIST in other positions.Of the 25 patients with secondary GIST,10 patients with liver metastasis of GIST received hepatic segmentectomy,1 received hepatobiopsy; 6 received abdominopelvic tumor resection; 5 received portial resection of the small intestine or colon; 1 received sigmoid colostomy; 1 received splenectomy and 1 received intracranial tumor resection.Of the 461 patients with primary GIST,patients who received combined devisceration accounted for 12.58％ (58/461),and the ratio of combined cholecystectomy was the highest,which was 34.5％ (20/58).Combined devisceration was considered for patients with duodenal stromal tumors,gastric stromal tumors and small intestinal tumors.Laparoscopic surgery accounted for 20.39％ (94/461) of all the surgery,and the ratio of laparoscopic surgery which carried out in recent 5 years was 28.52％ (77/270),which was significantly higher than 8.90％ (17/191) of the earlier 5 years (x2=36.67,P ＜ 0.05).Conclusion Different surgical treatment methods including minimally invasive surgery could be adopted according to different clinical characteristics of GIST in different locations,and radical resection of GIST is the main objective.

3 cm,66.67%,18/27) than those in smaller tumors(

Objective To investigate the effect of sleeve gastrectomy on the intestinal barrier of obesity rats fed with high-fat diet.Methods Thirty obesity rats fed with high-fat diet were randomly divided into three groups including common diet group (CD,n=10),sham operation group (SO,n=10) and sleeve gastrectomy group (SG,n=10).The lactulose/mannitol ratios (L/M) in 24-hour urine and endotoxin in portal vein were evaluated four weeks after surgery.The levels of tight junction proteins including claudin-1 and occludin in intestinal mucosa were analyzed by western blot.Results The body weight of SG group was significantly decreased than those of CD group (P<0.001) and SO group (P<0.001) four weeks after surgery.The L/M ratio in 24-hour urine of SG group was significantly lower than those of CD group (P<0.001) and SO group (P<0.01).The endotoxin level in portal vein of SG group was significantly lower than those of CD group (P<0.01) and SO group (P<0.05).The claudin-1 level in intestinal mucosa of SG group was significantly higher than those of CD group (P<0.001) and SO group (P<0.01) four weeks after surgery.The occludin level in intestinal mucosa of SG group was significantly higherthan those of CD group (P<0.001) and SO group (P<0.001).Conclusions Sleeve gastrectomy can reduce body weight,L/M ratio in 24-hour urine and endotoxin level in portal vein of obesity rat fed with high-fat diet and increase the levels of claudin-1 and occludin in intestinal mucosa.

Objective To investigate the effect of Unaccompanied Ginseng decoction joint Xuanfu Daizhe decoction on complications in patients with gastric cancer adjuvant chemotherapy, and select the best method to reduce the incidence of complications.Methods 80 patients of gastric cancer with postoperative adjuvant chemotherapy from May 2010 to May 2015 were divided into two groups, 40 cases in each group.The control group received Western medicine treatment and observation group received Unaccompanied Ginseng decoction joint Xuanfu Daizhe decoction , with a consecutive of one week.The clinical efficacy, adverse reactions and quality of life were compared between two groups.Results There was no significant difference in total efficacy between observation group and control group(77.5% vs.75.0%; χ2 =0.069,P>0.05).The KPS score, symptom and physical sign score, alanine aminotransferase, serum creatinine and systolic pressure in observation group post-treatment improved more than those in control group ( P<0.05).The adverse reaction rates of thrombocytopenia and myelosuppression in observation group was significantly lower than that in control group , respectively(P<0.05).Conclusion Unaccompanied Ginseng decoction joint Xuanfu Daizhe decoction could decrease the complications in gastric cancer patients with postoperative adjuvant chemotherapy.

Objective To investigate the multidisciplinary modality for obesity treatment and evaluate the safety and long-term efficacy of laparoscopic adjustable gastric banding(LAGB) on weight loss and obesity related metabolic diseases in obesity patients.Methods The clinical and follow-up data of 28 consecutive morbid obesity patients receiving LAGB in Dept.General Surgery of PUMC hospital in a multidisciplinary modality from Oct 2009 to May 2012 were retrospectively analyzed.The strategy of perioperative and follow-up management was summarized and the safety and long-term efficacy of LAGB on weight loss and comorbidity were evaluated.Results Mean body weight of the subjects was 129.1kg and mean body mass index(BMI)44.9 kg/m2.All patients underwent LAGB successfully without perioperative mortality.Early postoperative complications included 1 case (3.6％) of pulmonary infection and long-term complications included 2 cases (7.1％)of port infection.Mean body weight and BMI decreased gradually after LAGB.The mean percentage of excess weight loss(％ EWL)at postoperative 24 months was 41.3％.％ EWL of the group with regular follow-up and good compliance was significantly better than the other group.Complete or partial remission was observed in obesity related metabolic diseases at the last follow-up.Conclusions LAGB is safe and has good long-term efficacy on weight loss and comorbidity improvement of obesity patients.Better services can be provided for obesity patients in a multidisciplinary modality,It is important for the patients to follow up regularly after surgery in order to maintain long-term weight loss.

ObjectiveTo investigate the relationship between Dicer expression and clinicopathological characteristics and prognosis by detecting the expression of Dicer in hilar cholangiocarcinoma tissues and cells.MethodsThe expression of Dicer in tissues was detected using immunohistochemistry.Western blotting and RT-PCR were used to investigate Dicer expression in QBC939 and HIBEpic cells.The relationship between Dicer expression and clinicopathological characteristics was analyzed.A Kaplan-Maier analysis was performed to analyze the disease-free survival (DFS) and overall survival (OS) after radical surgical resection of hilar cholangiocarcinoma.ResultsWhen compared to control,Dicer was significantly down-regulated in hilar cholangiocarcinoma tissues (P＜0.05) and in QBC939 (P＜0.05).The expression of Dicer was higher in well differentiated adenocarcinoma than poorly and moderately differentiated tumours. Univariate analysis showed low expression of Dicer protein was significantly correlated with short disease-free survival and overall survival of patients with hilar cholangiocarcinoma after radical surgical resection (P＜0.01). Multivariate analysis revealed that the expression of Dicer was the most important factor for predicting prognosis after radical surgical resection of hilar cholangiocarcinoma (P＜0.05).ConclusionsDicer could be used as a prognostic marker for hilar cholangiocarcinoma.

Objective To study the relationship between glycemic control and platelet parameters in newly diagnosed type 2 diabetic patients. Methods Ninety patients newly diagnosed as type 2 diabetes and 90 healthy people were enrolled into the study. Their blood pressure, platelet parameters, including blood platelets count (PLT), mean platelet volume (MPV), platelet distribution width (PDW), fasting blood glucose (FPG),HbA1c ,triglyceride ( TG ), total cholesterol ( TC ), high density lipoprotein cholesterol (HDL-C ), low density lipoprotein cholesterol(LDL-C) were examined and the data were analyzed. Results The level of FBG, TG, TC,MPV and PDW of patients newly diagnosed as type 2 diabetic were significantly higher than those of healthy people (t =6. 405,2. 069,2. 633,2. 178,2. 103 ;P =0. 001,0. 046,0. 010,0. 031 and 0. 043 respectively); The level of FBG, HbA1c, TC, TG, MPV and PDW in the diabetic patients, with their HbA1 c ＞ 7%, were significantly higher than the patients with HbA1c ≤ 7 % ( t = 5.691,2.013,2. 345,3. 467,4. 016,2. 893, P = 0. 001, 0. 038,0. 029,0. 013, 0. 004, 0. 026 ). There were positive correlations between MPV and HbA1c ( r = 0. 389 P =0. 020), MPV and PDW ( r = 0. 324 P = 0. 01 ) in diabetic patients, but no correlation between MPV and FBG,MPV and Systolic BP or MPV and Diastolic BP (Ps ＞ 0. 05 ). The level of FBG, HbA1c, TG, MPV and PDW decreased significantly in the diabetic patients with HbA1c ＞ 7% after treatment (t = 5. 591,2. 301,2. 410,2.204,2.105; P=0.001,0.031,0.023,0.035,0.041, respectively).Conclusion The platelet activity enhanced in newly diagnosed type 2 diabetic patients, platelet activity can be recovered through glycemic control,which may prevent the role of platelet in diabetes complications in these patients.

Objective To observe the effect of preoperative oral administration of carbohydrate on blood glucose,insulin resistance(IR) and inflammatory reaction after gastrointestinal operation.Methods 48 patients receiving gastrointestinal operation were randomly divided into the study group(n =23)and the control group(n =25).Patients in the study group were orally given 25％ glucose solution 300 ml 3 hours before operation.Before anesthesia induction,gastric contents were aspirated through nasogastric tube to examine its volume and pH.Serum high sensitivity C-reactive protein(hsCRP),fasting blood glucose,insulin level and homeostasis model assessment-insulin resistance(HOMA-IR) were detected before operation and on the first morning after operation between the two groups.Results No anesthesia or operation related complications occurred in either groups.Patients had similar gastric contents volume and the PH value of gastric contents.There was no significant difference in serum hsCRP,fasting blood glucose and HOMA-IR between the two groups before operation.But on the first day,fasting blood glucose,HOMA-IR and hsCRP were significantly lower in the study group than in the control group(6.51 ±1.15 vs 7.49 ±0.57 mmol/L,P =0.038;4.34 ± 1.60 vs 6.09 ±2.81,P =0.043;40.45 ± 27.02 vs 80.02 ± 38.98 mg/L,P =0.03).Conclusion Preoperative oral administration of carbohydrate can obviously lower the postoperative blood glucose level and insulin resistance and alleviate postoperative inflammatory reaction.

Objective To explore the functional imaging alteration of dorsal attention network (DAN) between heroin addicts and heroin abstainers and probe into its influence on attentional function.Methods Attention-related neuropsychological assessments were applied to evaluate the difference of attentional function between heroin addicts and heroin abstainers.With the functional magnetic resonance imaging (fMRI) data obtained from 17 heroin addicts and 15 heroin abstainers at resting state,we extracted the DANs of heroin withdrawal group and heroin dependence group respectively by using independent component analysis (ICA) and analysed the differences of intra-group and inter-group,then correlation analysis was performed among brain areas which have significant difference between groups and Stroop interference effect test.Results Compared with the heroin dependence group,there was a better result of attentional function in the heroin withdrawal group (P＜0.05),especially at the digit span test(backward) (P=0.0363),digit symbol test (writing) (P =0.0195),Stroop test C (reaction) (P =0.0379),Stroop test C (error) (P=0.0014) and Stroop interference effect test (P=0.0002).Neuroimaging findings demonstrated that there was a similar DAN in the heroin withdrawal group and heroin dependence group which mainly included the bilateral intraparietal suleus,postcentral gyrus and frontal eye field.Compared with the DAN of heroin addicts,significantly enhanced functional connectivity within the DAN of heroin abstainers was observed in the left superior parietal lobule (MIN:-24,-75,48),right inferior parietal lobule (MIN:39,-54,45) and left inferior parietal lobule (MIN:-33,-51,57).Significant negative correlations were observed between these brain areas and Stroop interference effect test in the heroin dependence group (r=-0.79,-0.69,-0.64,P＜0.01),but not in the heroin withdrawal group.Conclusions Heroin addiction can impair attentional function,compared with the DAN of heroin addicts,significantly enhanced functional connectivity in the left superior parietal lobule as well as bilateral inferior parietal lobule are observed in the heroin abstainers at resting state,which may be one of the neural mechanisms of attentional function improvement.

Objective To investigate the risk factors of reoperation in patients with Crohn's disease recurrence.Methods The clinical data of 108 patients with Crohn's disease who were admitted to the Peking Union Medical College Hospital from March 2004 to September 2013 were retrospectively analyzed.Of the 108 patients,82 received single operation and 26 received reoperation.Twenty-five factors which might influence the reoperation were analyzed,which were gender,age,blood type,preoperative levels of white blood cells,neutrophils,lymphocytes hemoglobin,albumin,prealbumin,high sensitive-C reactive protein (hs-CRP),anti-saccharomyces cerevisiae antibody (ASCA),anti-neutrophil cytoplasmic antibody (ANCA),location and type of the lesions,extraintestinal manifestation,perianal lesions,history of smoking,appendectomy,course of the disease before the first operation,pre-operative administration of immunosuppressants,body mass index (BMI) before the first operation,onodera prognostic nutrition index (OPNI),enteral nutrition,emergent operation,complications after the first operation.The univariate analysis was done using the chi-square test or Fisher exact probability,and the multivariate analysis was done using the Logistic regression model.Results The results of univariate analysis showed that the level of preoperative prealbumin,hs-CRP,location and type of the lesion,the history of smoking,preoperative administration of immunosuppressants,enteral nutrition before the first operation were the risk factors of reoperation in patients with Crohn's disease (x2=5.928,4.805,7.491,12.363,5.229,9.026,16.506,P ＜ 0.05).The results of multivariate analysis showed that the lesion located at the ileocolon,administration of immunosuppressants prior to the first operation for 1 year and energy provided by enteral nutrition under 500 kcal/d before the first operation were the independent risk factors of reoperation (OR =1.908,3.535,5.489,95％ confidence interval:1.035-3.518,1.087-11.494,1.816-16.590,P＜0.05).Conclusions Patients with lesions located at the ileocolon,administration of immunosuppresants prior to the first operation for 1 year and energy provided by enteral nutrition under 500 kcal before the first operation have higher risk of Crohn's disease recurrence and reoperation.