Objective Using a model of H.pylori infected Mongolian gerbil , we observed the effect of H.pylori and N methyl N’ nitro N nitrosoguanidine (MNNG) on gastric mucosa, in an attempt to clarify the potential role of vitamin C in the prevention of gastric carcinoma. Methods A total of 160 Mongolian gerbils , eight week old, were randomly divided into five groups(each 32 animals): Group A, infected with H.pylori ; Group B, infected with H.pylori followed by MNNG administration; Group C, received MNNG without H.pylori infection; Group D, infected with H pylori followed by administration of MNNG and vitamin C; Group E as control. Eight animals from each group were killed at 12, 24, 36, 48 weeks, and histopathological changes in their stomachs were examined for chronic gastritis, intestinal metaplasia, atypical hyperplasia and adenoma. Results The incidences of intestinal metaplasia and dysplasia in groups A and B were significantly higher than those in the other groups( P

Advanced gastric cancer is usually dealt with D2 radical dissection. There are different opinions as to whether it is necessary to perform D3 radical lymphadenectomy.Some scholars thought that properly enlarged radical dissection can improve long-term outcomes for the treatment of advanced gastric cancer.In recent years,laparoscopic D1 and D2 radical dissection of gastric cancer could be carried out in many hospitals.However,the technique and related skills for performing D3 radical lymphadeneetomy through laparoscope remains to be explored.Based on our previous experiences,D3 radical lymphadeneetomy using artery suspension method and medial-to-lateral approach for advanced gastric cancer is proved to be safe and feasihle.

ObjectiveTo evaluate the feasibility, safety and the long-termoutcomes of laparoscopy-assisted distal gastrectomy (LADG) for advanced gastric cancer (AGC).MethodsWe retrospectively analyzed the clinical and follow-up data of 346 cases after LADG from January 2004 to June 2009, compared with 313 cases after conventional open distal gastrectomy (ODG) for advanced gastric cancer at the same period at our hospital. The surgical safety, postoperative complications, survival rate, and the recurrence and metastasis of cancer were compared.ResultsThere was no significant difference at the average time of LADG and ODG procedures (211 ± 56) min vs.(204 ±41 ) min, but blood loss during operation and length of incision in LADG group were significantly less than in the ODG group. The proximal and distal length were, respectively, (6. 3 ± 2. 0) cm and (5. 7 ± 1.7 ) cm in LADG group and (6. 3 ±2. 1 ) cm and (5.6 ± 1.6) cm in ODG group, the difference was not significant. The number of lymph node dissections was also similar: (33 ± 13) in LADG group and (33 ± 16) in ODG group. The incidence of postoperative complications in LADG group was significantly lower than that in ODG group ( 6. 7％ vs.13. 1％, P ＜ 0. 05). During the follow-up period of 6-72 months (average 37 months), the 1-, 3-and 5-year survival rates were, respectively, 87. 2％, 57. 2％ and 50. 3％ in LADG group and 87. 1％, 54. 1％and 49. 2％ in ODG group, the difference was not significant. The differences in recurrence and metastasis between the two groups were not statistically significant.ConclsionLaparoscopy-assisted gastrectomy for advanced gastric cancer is not significantly different with open surgery in postoperative survival rate or recurrence. It is less traumatic and of fewer complications.

Objective To investigate the feasibility of laparoscopic-assisted transanal pull-through resection and anastomosis in the treatment of ultra-low rectal cancer.Methods From November 2005 to December 2006,21 patients with ultra-low rectal cancer had undergone laparoscopic-assisted transanal pull-through resection and anastomosis in Southwest Hospital.The perioperative condition,postoperative complications and the result of follow-up were retrospectively analyzed.Results The operation was successfully performed on all the patients.The mean operation time and postoperative hospital stay were(216±25)minutes(170-260 minutes)and(9.4±1.0)days(7-11 days),respectively.The time needed for the recovery of gastrointestina]function was(65±14)hours(38-88 hours).The mean perioperative blood loss was(140±49)ml(80-250 ml).All the patients were followed up for(22±4)months(15-28 months),and no anastomotic bleeding or fistula was observed.Six patients developed mild to moderate anastomotic striclure,1 local recurrence and 1 liver metastasis.Conclusions Laparoscopic-assisted transanal pull-through resection and anastomosis for ultra-low rectal cancer is safe and feasible,and the short-term effect is satisfactory.

The operation path, lymph node dissection and reconstruction of the alimentary tract are the three most technical difficulties of laparoscopy-assisted gastrectomy. The essential difference between laparoscopy-assisted gastrectomy and open gastrectomy is the operation path. Based on our clinical experience, we investigated reasonable paths for laparoscopyassisted gastrectomy. Patients were placed in a supine position with their legs apart, and the operator stood on the left side of the patient. Five trocars were placed in the abdominal wall in a curved line. The operation was carried out in the order of greater gastric curvature, the lower region of the pylorus and antrum,the upper region of the pancreas, omentum minus, cardia, and arcuate diaphragm. From May 2004 to April 2010, we successfully carried out 761 laparoscopy-assisted gastrectomies with satisfactory outcomes.

Objective To study the awareness of perimenopausal hormone replacement therapy (HRT) among a part of the medical care personnel in Guiyang . Methods A survey was conducted among 500 medical staff members in 4 hospitals of Guiyang by cluster random sampling using questionnaire about HRT. Results The survey showed that 74.6% (373/500) medical staff thought that the hormone replacement therapy was necessary to perimenopausal women; 96.7% (87/90) of obstetrics and gynecology doctors believed that it was necessary for perimenopausal women to use HRT,which was significantly higher than the doctors of other specialties 68.6% (166/242) and the nurses group 71.4% (120/168) (χ2=28.509, 23.537, P<0.01). Only 5.8%(29/500) of the medical personnel were willing to recommend HRT. In light of the attitude for recommending HRT, the obstetricians and gynecologists group was more significantly higher than the other specialties doctors group (χ2=86.781, P<0.01). Conclusion The knowledge of hormone replacement therapy in part of Guiyang medical personnel is not sufficient;the recommending rate of HRT was low;the side effects of HRT was still a concern. There are differences between obstetrics and gynecology doctors and doctors other specialties and nurses in HRT knowledge.

Objective To investigate the effect of thymosin ?1 (T?1) on cellular immune function in gastric cancer patients through observing its treatment on the differentiation of T-lymphocyte subsets from screened peripheral blood mononuclear cells (PBMCs). Methods PBMCs were obtained by centrifugation of blood samples from 18 healthy subjects and 32 patients with gastric cancer,and then cultured in the presence of culture medium with addition of T?1 at 50,10 and 1 ?g/ml for 2 d. T lymphocyte subsets (such as CD4+,CD8+ and CD4+ CD25+ Foxp3+ T cells) and Th1/Th2 multiplex cytokines were detected by flow cytometry (FCM). Results After PBMCs isolated from healthy people and patients were incubated with or without T?1,there was no significant change in percentage of CD4+,CD8+ peripheral lymphocyte subsets and ratio of CD4+/CD8+. There was no obvious change in the percentage of CD4+ CD25+ Foxp3+ T lymphocyte subsets in the normal control,but a significant increase was observed in the cells from patients with gastric cancer after treatment (P

Objective To compare the clinical effects between laparoscopic radical resection combined with radiofrequency ablation (RFA) and open radical resection for colorectal liver metastases.Methods The retrospective cohort study was conducted.The clinicopathological data of 120 colorectal liver metastases patients who were admitted to the Mengchao Hepatobiliary Hospital of Fujian Medical University (80 patients) and the Third Mfiliated Hospital of Chongqing Medical University (40 patients) between September 2012 and April 2017 were collected.Sixty patients undergoing laparoscopic radical resection of colorectal cancer combined with RFA of liver metastases were allocated into the laparoscopy with RFA group,and 60 undergoing open radical resection of colorectal liver metastases were allocated into the open group.Observation indicators:(1) surgical and postoperative situations;(2) follow-up and survival situations.Follow-up using outpatient examination and telephone interview was performed to detect postoperative survival up to May 2017.Measurement data with normal distribution were represented as x±s,and comparisons between groups were analyzed using independent-sample t test.Measurement data with skewed distribution were described as M (range).Comparisons of count data were analyzed using chi-square test or Fisher exact probability.The repeated measures data were analyzed using the repeated measures ANOVA.The survival curve and rate were respectively drawn and calculated by the Kaplan-Meier method,and the Log-rank test was used for survival analysis.Results (1) Surgical and postoperative situations:① All the patients underwent successful surgery,without conversion to open surgery in the laparoscopy with RFA group.Operation time,volume of intraoperative blood loss,cases with overall complications,death,abdominal pain,nausea and vomiting,liver dysfunction,pleural effusion,non-calculus cholecystitis and peptic ulcer and duration of postoperative hospital stay were respectively (135±34)minutes,(451±197)mL,31,0,18,6,6,4,3,2,(13±4)days in the laparoscopy with RFA group and (165±49)minutes,(794±204)mL,42,1,15,9,10,11,5,5,(19±4)days in the open group,with statistically significant differences in operation time,volume of intraoperative blood loss,cases with overall complications and duration of postoperative hospital stay between groups (t =3.983,9.394,x2 =4.232,t =9.148,P＜0.05),and no statistically significant differences in cases with death,abdominal pain,nausea and vomiting,liver dysfunction,pleural effusion,non-calculus cholecystitis and peptic ulcer between groups x2 =0.376,0.686,1.154,3.733,0.134,0.607,P＞0.05).() Levels of alanine aminotransferase (ALT),total bilirubin (TBil) and prothronbin time (PT) before operation,at day 1 and 3 postoperatively were respectively (70±9)U/L,(399±36)U/L,(231±19) U/L,(21±3) μmol/L,(26±3) μmol/L,(23±5) μmol/L,(17.3±2.4) seconds,(20.2-±4.4) seconds,(18.9±2.8) seconds in the laparoscopy with RFA group and (68± 8) U/L,(412±39)U/L,(253±22)U/L,(21±4)μmol/L,(28±4)μmol/L,(27±8)μmol/L,(16.6±3.0)seconds,(22.1±5.2) seconds,(20.1± 4.4)seconds in the open group,with statistically significant differences in the levels of ALT,TBil and PT before operation,at day 1 and 3 postoperatively between groups (F=16.727,13.115,4.194,P＜0.05).(2) Follow-up and survival situations:120 patients were followed up for 7-24 months,with a median time of 20 months.The postoperative 1-and 2-year tumor-free survival rates,1-and 2-year overall survival rates were respectively 23.3％,11.9％,85.0％,40.0％ in the laparoscopy with RFA group and 20.0％,12.8％,83.3％,38.3％ in the open group,with no statistically significant difference in above indicators between groups (x2 =0.145,0.069,0.012,0.196,P＞0.05).Further analysis showed that postoperative 2-year overall survival rate of patients with 1,2,3 and ＞3 liver metastasis lesions were respectively 53.3％,38.2％,40.0％,16.7％ in the laparoscopy with RFA group and 50.0％,35.7％,40.0％,15.4％ in the open group,with a statistically significant difference in 2-year survival rate of patients with different liver metastasis lesions in the laparoscopy with RFA group (x2 =20.949,P＜0.05) and in the open group (x2 ＝ 21.349,P＜0.05).Conclusion There are some advantages of fewer traumas,less complications,faster postoperative recovery and minimally invasive in laparoscopic radical resection combined with RFA for colorectal liver metastases,meanwhile,less liver metastasis lesions and better prognosis are found.