Objective:To clone the recombinant plasmid affecting gene DNMT1 translation by RNA interfering and analyze the nucleic acid sequence of the recombinant for further searching new gene therapy method of tumor.Methods:Two DNA sequences containing small hairpin structure were designed and synthesized.The complement form was obtained by annealing and inserted into vector pTZU6+1,and the recombinant plasmid was transformed into Jm109 strain.Finally the plasmid identified by restriction enzyme was used for sequence analysis.Results:The recombinant was cloned and the aim sequence was obtained.Conclusion:Successful cloning of the recombinant helps to search new gene therapy method of tumor.

Objective:To clone the recombinant plasmid affecting gene DNMT1 expression by RNA interfering and transfect it into AGS in order to further search its effects on the cell cycle of gastric cancer AGS.Methods:Two DNA sequences containing short hairpin structure was designed and synthesized.The complement form was obtained by annealing and inserted into vector pTZU6+1.The recombinant plasmid was transfected into AGS.Finally the cell cycle was evaluated through flow cytometer.Results:The S cycle cells of the transfected AGS dropped dramatically.And the G2-M cycle cells increased significantly.Conclusion:Successful cloning and transfecting the recombinant make it possible to search new gene therapy for the tumors.

With the increasing confrontation between doctors and patients and the increasing number of medical conflictions, case reports, as convincing evidence, have played a more and more important role. How to improve medical students’ capability of writing case reports and avoid the occurrence of some medical conflictions turns out to be a problem that has to be solved. This article makes a tentative exploration in this respect.

Objective With the increasing number of medical disputes,it is urgent to train the interns'skills. Methods Interns improved their doctor-patient communication skills by enhancing awareness on the doctor-patient communication,learning a variety of medical laws and regulations,improving clinical skills,training good medical ethics to master some communication skills. Results Through such training,medical disputes due to interns never happened during the internship period. Conclusion Our training program is practicable.

Objective To approach the correlation between preoperative detection of serumal carcinoembryonic antigen (CEA ) and carbohydrate antigen 19‐9(CA19‐9) and primary tumor/regional lymph nodes/distant metastasis(TNM) staging ,clinicopatho‐logic staging and clinical features of patients with colorectal cancer (CRC) ,and to explore their clinical significance .Methods The dates of 231 patients with CRC treated in the First Affiliated Hospital of Chongqing Medical University from April 2011 to January 2013 were gathered .Then ,the relationship between detection of CEA and CA19‐9 and TNM staging ,clinicopathologic staging and clinical features of patients with CRC were analyzed . Results The positive rate of CEA in patients with CRC was 51 .5%(119/231) and the positive rate of CA19‐9 in patients with CRC was 46 .3% (107/231) .The positive rates of CEA and CA19‐9 were positively correlated with the TNM staging and clinicopathologic staging of CRC (P<0 .05) .Conclusion The positive rate of CEA and CA19‐9 were associated with the tumor progress and metastasis ,so the detection of CEA and CA19‐9 could be used as one of important serumal marker for clinicopathologic staging of CRC .Also ,detection of CEA and CA19‐9 could be used for prog‐nosis judgment and therapeutic schedule institution .

Special weight has been laid on young teachers in the buildup of teaching staff in medical universities.Aimed at promoting their active and creative involvement in exploring their potentials and helping them develop into qualified teachers in the current new era,this article performs some tentative research on approaches to their self-improvement.

Diagnostics is an important professional medical course concerning basic theory,basic skill and basic approach of diagnosis.Using standardized patients in clinical scene can relieve the shortage of clinical teaching resources and strained doctor-patient relationship as well as improve the clinical skills and doctor-patient communication of students.However,there were many problems in using the standardized patient;therefore,discussions were needed to find a better solution.

ObjectiveTo investigate the lethal effect of hyperthermic CO2 pneumoperitoneum on gastric cancer cells and then further study the feasility and safety of inflating hyperthermic CO2 in gastric cancerpatients when performing laparoscopic operation.MethodsAn in vitro hyperthermic CO2 pneumoperitoneum experimental model was built,then according to the experimental purpose,the stomach carcinoma cell-7901 was grouped:hyperthermic CO2 pneumoperitoneum group; pure hyperthermia group; pure CO2 group;control group.After processing according to groups,cell proliferation was detected by Cell Counting Kit-8(CCK-8),cell apoptosis was detected by Annexin V-fluorescein isothiocyanate/propidium iodide flow cytometry and Hoechst 33342/propidium iodide fluorescent microscopy.ResultsThe reaults of cell proliferation detection showed that hyperthermic CO2 pneumoperitoneum could significantly inhibit proliferation of stomach carcinoma cell-7901 when compared with pure hyperthermia group,pure CO2 group and control group (P ＜ 0.05 ).The results of apoptosis detection showed that hyperthermic CO2 pneumoperitoneum could significantly induce apoptosis of stomach carcinoma cell-7901 and the gastric cancer cells apoptosis showing bright blue under the fluorescent microscope.ConclusionsHyperthermic CO2 pneumoperitoneum could significantly inhibit proliferation of stomach carcinoma cell-7901 and probably kill it by inducing apoptosis.

Objective To investigate the value of modified loop ileostomy in laparoscopic low and superlow radical resection of the rectal cancer with reservation of anus.Methods The clinical data of 108 patients who received laparoscopic low and super-low radical resection of rectal cancer with preservation of anus at the Subei Hospital of Jiangsu Province from January 2010 to June 2012 were retrospectively analyzed.Fifty-three patients who received preventive ileostomy were in the ileostomy group,and 55 patients who did not receive preventive ileostomy were in the non-ileostomy group.The operation,incidence of complication and follow-up of the 2 groups were analyzed.All data were analyzed using the t test,chi-square text or Fisher exact test.Results The operation time and blood loss were (185 ± 14)minutes and (31 ± 26)ml in the ileostomy group,and (154 ± 12)minutes and (28 ± 19)ml in the non-ileostomy group,with no significant difference between the 2 groups (t =2.34,1.82,P ＞ 0.05).The time to first flatus,time to liquid diet intake,time to pelvic drainage tube removal,duration of hospital stay,hospital costs were (1.1 ± 0.3) days,(1.1 ± 0.2) days,(5.2 ± 1.0) days,(7.2 ± 1.4) days,(3.0 ± 0.2) ×104 yuan in the ileostomy group,and (4.2 ± 0.6) days,(4.3 ± 0.6) days,(8.4 ± 3.9) days,(12.9 ±4.4)days,(3.8 ±0.7) × 104 yuan in the non-ileostomy group,with significant differences between the 2 groups (t =7.25,28.12,15.34,34.01,7.83,P ＜ 0.05).The incidences of postoperative complications and anastomotic fistula were 5.7％ (3/53) and 0 in the ileostomy group,and 21.8％ (12/55) and 12.7％ (7/55) in the non-ileostomy group,with significant differences between the 2 groups (P ＜ 0.05).Conclusion Modified loop ileostomy in laparoscopic low and super-low radical resection of rectal cancer can effectively reduce the incidence of anastomotic fistula,and helps the recovery of patients.

Objective To explore the value of endovenous laser treatment (EVLT) in treating the variceal ulcer of lower extremities (VULE).Methods Twenty cases of chronic venous insufficiency with VULE were treated with endovenous laser and received regular postoperative follow-up survey.Results No complication,such as burning of skin happened,all superficial varicose veins disappeared,and most of ulcers were healed within 2 -4 weeks after EVLT.Conclusion EVLT is one of the important methods which is minimally invasive and safe to treat VULE.