EZH2 is the catalytic subunit of polycomb repressive complex 2 (PRC2),which represses gene expression by catalyzing lysine 27 of histone H3.It is overexpressed in prostate cancer,breast cancer,bladder cancer,gastric cancer and several other cancers.There is a close correlation between overexpression of EZH2 and progression of malignancy,invasion and migration of cancer cells.With a thorough understanding of the function,up and down stream regulatory mechanism and clinicopathological features,EZH2 will be expected to as a target and provide a new way for the treatment of cancers.

Objective To evaluate the feasibility,safety and short-term outcome of laparoscopic-assisted surgery for colorectal cancer.Methods From August 2001 to November 2004,laparoscopic resection of colorectal carcinoma were performed in 112 cases,including right hemicolectomy(n=23),left himicolectomy(n=7),radical resection of sigmoid cancer(n=15),Dixon procedure(n=49),and Miles procedure(n=18).Results One hundred and five patients underwent laparoscopic resection successfully,7 cases were converted to open surgery because of hemorrhage,obesity or adhesion with adjacent organ,6 of which were left colon or rectal cancer.The mean operating time was(161.2?48.6)min,and the mean operative blood loss was 78.5 mL.There were 8 cases occurred postoperative complications,and no mortality during perioperative period.The length of upper and lower segment of resection for colonic cancer was (14.5?3.2)cm and(11.0?2.6)cm respectively.The length of upper and lower segment of resection for rectal cancer was(15.3?2.7)cm and(2.8?1.6)cm,respectively.The mean number of lymph nodes dissected was(8.2?4.6),and lymph node metastases were found in 49 cases.One hundred and seven cases(95.5%) were followed up for 8-44 months,of which,7 cases had local recurrence and 6 cases had distant metastases.No case of trocar port tumor implantation was observed.Conclusions Laparoscopic surgery for colorectal cancer is feasible and safe,can result in the same outcome as open radical surgery,and has the advantages of mini-invasive procedure.

Objective To compare clinical outcomes of modified hand-assisted versus total laparoscopic splenectomy and esophagogastric devacularization for treatment of portal hypertension due to cirrhosis.Methods From Jan 2007 to Dec 2011,modified hand-assisted laparoscopic splenectomy plus esophagogastric devascularization (MHLSED) and total laparoscopic splenectomy and esophagogastric devascularization (LSED) were performed on 47 and 38 patients with portal hypertension due to cirrhosis,respectively.For the MHLESD group,we performed hand-assisted laparoscopic splenectomy first,then converted during operation to totally laparoscopic esophagogastric devascularization.The operating time,intra-operative blood loss,postoperative complications and postoperative hospitalization time were analyzed.Results MHLSED were performed on 47 patients successfully without any need to convert to open surgery,and LSED were performed on 36 patients with 2 patients having to convert to open surgery.The mean operative time [(154 ±32)min] and mean intra-operative blood loss [(115± 73)ml] in the HLSED group were significantly lower than the LSED group [(212±45)min and (172±57)ml,respectively].There was no mortality.There were no significant differences in the time period for gastrointestinal function to recover,postoperative hospital stay and overall complication rate between the two groups.Conclusions MHALSD is a relatively safe and efficacious treatment for portal hypertension due to cirrhosis.It combines the advantages of hand-assisted and totally laparoscopic operations.

ObjectiveTo evaluate the safety and efficacy of a modified hand-assited laparoscopic splenectomy (HALS) plus pericardial devascularization for the treatment of cirrhotic portal hypertension.MethodsFrom March 2009 to Dec 2011,modified hand-assited laparoscopic splenectomy plus pericardial devascularization was performed on 47 patients with portal hypertension and liver cirrhosis.We performed HALS first, thenconvertedtototallylarparocopicpericardialdevascularizationduring operation.ResultsAll patients received modified HALS plus pericardial devascularization without convertion to open surgery,the mean operative time was ( 154 ± 32) min,the mean intraoperative blood loss was ( 115 ±73) ml,and the mean postoperative hospitalization was (9.2 ± 1.6) days.The perioperative complications included plural effusion in 3 cases,ascites in 4 cases,pancreatic leakage in 1 case and wound dehiscence in 1case. Therewasnoperioperativemortality.ConclusionsModifiedHALSpluspericardial devascularization is a relatively safe and effective procedure in the treatment of portal hypertension due to liver cirrhosis,it has the advantage of hand-assisted and totally laparoscopic procedures.

Objective To evaluate the clinical results of total laparoscopic hepatectomy for hepatolithiasis. Methods The clinical data of 72 patients with intrahepatic lithiasis receiving total laparoscopic hepatectomy in our hospital from July 2005 to April 2009 were retrospectively analyzed. Results The mean age of the 72 patients was (43. 8±21.7) yrs (16-65 yrs). For laparoscopic hepatectomy, it was anatomical left liver resection in 34 patients, anatomical resection of left lateral liver in 19 and resection of S6 in 16. The operative duration was (262.5± 115.5)min (125-320 min). The median intraoperative blood loss was 150 ml (50-400 ml). The occurring rate of postoperative complications was 12.50 %. Complications included bile duct infection in 8 patients, bile leakage in 6, gastroparesis in 1,postoperative early inflammatory ileus in 1 and subcapsular fluid collection of liver in 1. All the complications were cured by non-surgical means. Conclusion In the era of minimally invasive surgery, total laparoscopic hepatectomy has gradually become the prominent treatment for hepatolithiasis.

Objective To evaluate laparoscopic resection of gastric stromal tumors. Methods Clinical data of 20 patients undergoing laparoscopic resection of gastric stromal tumors from June 2003 to October 2007 were retrospectively analyzed. Result Laparoscopic wedge resection was completed successfully in all 20 patients with a mean operating time of(60±34) min, and without major complications. The mean hospital stay was (6.0±2.6) days. During a follow-up period from 10 to 22 months there was no recurrence. Conclusions Laparoscopic wedge resection is safe, effective, and minimally invasive for treating gastric stromal tumors.

Objective To evaluate laparoscopic radical resection of metachronous colorectal carcinoma.Methods A total of 13 patients with metachronous colorectal carcinoma undergoing laparoscopic resection in Department of Gastrointestinal Surgery,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology from January 2013 to December 2015 were analyzed retrospectively.Results The mean time of surgery was (156 ± 9) min.Tumors were located in the right hemicolon in 3 cases,in the transverse colon in one,in the left hemicolon in 2,in the sigmoid colon in four and in the rectum in 4.The mean blood loss was (66 ± 21) ml.There was no conversion to open surgery.Two patients were done with protective ileostomy.Postoperative gastrointestinal function recovery time was (2.5 ± 0.7) days.One postoperative intra-abdominal bleeding was successfully controlled laparoscopically.Posteperative length of hospital stay was (26.2 ± 2.9) days.The median follow-up was 12 months (5-30 months) with no cancer recurrence.Conclusions Laparoscopic radical resection of metachronous colorectal carcinoma has good curative effect,and high success rate in spite of previous history of laparotomy.

Objective To investigate the feasibility and effectiveness of laparoscopic splenoctomy (LS)in patients with idiopathic thrombocytopenic purpura(ITP). Methods Clinical data of 17 ITP cases undergoing LS between Augest 2003 and December 2006 were analyzed retrospectively. Remits LS was Successfully conducted in all 17 cases without converting to open surgery with an average intraoperative blood loss of 120 ml in each case.There was no postoperative bleeding,fistula and infection.The platelet count increased rapidly in one week.After stopping glucocorticoid treatment for one month.15 cases achieved complete response(88.2%)and 2 caSes had partial response(11.8%).Fbllow-up of 3～43 months found no recurrence. Conclusions Use of LS for ITP is safe,feasible and effective.

Objective To evaluate the histological response and the clinical value in laparescopic colorectal surgery combined with preoperative regional intra-arterial chemotherapy(PRAC). Methods In cases of rectal cancer and fiver metastases selective regional intra-arterial chemotherapy and iodinated oil embolism was carried out in 23 cases of colorectal carcinoma. After 1 to 11 days laparoseopic radical resection was done, specimens were sent for histopathological examination. We analyzed the correlation between tumor differentiation and TNM stage, compared the effect of PRAC with PRAC + embolism by the criteria of histological response of chemotherapy. χ2-test was used to compare interclass correlation.Results The histological effect in the 23 cases of PRAC level 0 was in 2 cases, level Ⅰ in 7 cases, level Ⅱ in 10 cases, and level Ⅲ in 2 cases. The overall effective rate was 91% (21/23). In the 15 cases with lymph node metastases, the effective rate was 87% (13/15). There was no significant statistic correlation between tumor differentiation or TNM stage and histological response. PRAC associated embolism had a better histological response compared to PRAC alone. Conclusions Preoperative regional intra-arterial chemotherapy had marked therapeutic effect on histological response to the colorectal carcinoma patients of various tumor differentiations and TNM stage, especially combining with the embolism to rectal cancer could improve the efficacy.

OBJECTIVETo explore the regulation and clinical significance of intestinal dripping of Jianpi Tongli (JPTL) Chinese herbs on levels of serum cytokines, such as interleukin-2 (IL-2), soluble interleukin-2 receptor (sIL-2R) and interleukin-12 (IL-12) in treating patients with gastric cancer (GC) at early post-operational stage.

METHODSSixty patients with GC were randomly divided into two groups, i. e. the studied group (n = 30), treated with JPTL Chinese herbs, and the control group (n = 30) treated with normal saline. The medication was started from the 1st day after operation by intestinal dripping daily, 7 days as one course. Levels of IL-2, sIL-2R and IL-12 were observed before and after operation.

RESULTSSignificant difference was seen on the 7th day post-operation between the studied and the control group, mainly in aspects of obvious increase of IL-2 and decrease of sIL-2R (P <0.05), no significant difference in IL-12 was found (P >0.05) though there was certain improvement. Compared with pre-operation of the same group, significant difference was found in the studied group in the increased IL-2 and IL-12 and decreased sIL-2R on the 7th day post-operation, while no significant difference in these indexes was found in the control group (P >0.05), though certain improvement was shown.

CONCLUSIONEarly intestinal dripping of JPTL Chinese herbs to post-operational patients with GC could improve their immune function, which was of important significance in early preventing the severe complications, improving the prognosis, and elevating the survival rate.

Adenocarcinoma ; blood ; drug therapy ; surgery ; Adult ; Aged ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Interleukin-12 ; blood ; Interleukin-2 ; blood ; Intestine, Small ; Intubation, Gastrointestinal ; Male ; Middle Aged ; Phytotherapy ; Postoperative Period ; Receptors, Interleukin-2 ; blood ; Stomach Neoplasms ; blood ; drug therapy ; surgery