With the understanding of the function mechanism of RNAi,it has been widely applied in various fields.RNAi is a powerful tool to study gene functions and provides a new technical method for the specific gene treatment as well.The further development of RNAi technique opens up a new way for tumor gene treatment.

Objective To study the influence of the operation through tubular stomach plus mechanical anastomosis on the life quality of patients with esophageal cancer.Methods Seventy patients with esophageal cancer were treated by operation,tubular stomach plus mechanical anastomosis were used.They were followed up for six months.The quality of life was evaluated.Results The average time for the operation was 120 min and the average amount of bleeding was 291.3ml.Compared with before surgery,there was significant difference in emotion,activity,sleep and diet ( P ＜ 0.05 ).Conclusion The operation through tubular stomach plus mechanical anastomosis could significantly improve the quality of life of patients with esophageal cancer.

BACKGROUND:With the development of tissue engineering technology, repairing large-area bone defects using tissue-engineered bone has become a hot spot.
OBJECTIVE:To introduce the bone tissue engineering seed cel s, cytokines, as wel as the characteristics of scaffold materials and their vascularization.
METHODS:With the key words of“bone tissue engineering, scaffold, vascularization”in Chinese and in English, respectively, a computer-based search of articles published from January 2000 to January 2012 was performed in CNKI and PubMed databases. Articles with the summary of bone tissue engineering, bone tissue engineering scaffolds and scaffold vascularization were included.
RESULTS AND CONCLUSION:The selection of seed cel s, application of cytokines, scaffold material performance and degree of vascularization in bone tissue engineering has an important influence on the repair of bone injuries. Appropriate seed cel s is the study foundation in bone tissue engineering, cytokines serve as catalysts, and scaffold materials with good three-dimensional structure can promote cel growth and proliferation, tissue ingrowth, osteogenesis and vascularization. Each scaffold has its own inadequacies, so the combination of a variety of materials can reach a combined effect to meet the clinical demand. In addition, it is important to actively seek new material preparation technology and improve the existing methods, in order to create a more excel ent scaffold. But the vascularization is stil a major test for bone tissue engineering. Current methods to promote vascularization of tissue-engineered bone have some defects. For examples, the use of growth factors to promote vascularization can lead to disease progression in patients with metabolic abnormalities during;microsurgical techniques for tissue engineering bone vascularization are easy to cause trauma and deformity at other parts, which is not conducive to the patient’s physical rehabilitation.

Objective:To analyze the effect of bisoprolol on the cardiopulmonary function in the patients with CHF complicated with COPD. Methods:A retrospective study was used. Totally 60 cases of patients were divided into the observation group(30 cases) and the control group(30 cases)according to the different treatment method. The patients in the control group were treated with con-ventional methods including cardiotonic drugs,vasodilators,anticoagulation,myocardial nutrition and so on,while the patients in the observation group were treated with bisoprolol additionally at the initial dose of 1. 25mg,and the dose was increased to 10mg at the rate of 1. 25 mg/1-2 weeks. The cardiopulmonary function,clinical efficacy and adverse reactions of the two groups were compared after 3-month treatment. Results:The complete response rate and effective rate of the observation group were both higher than those of the control group(P<0. 05). All indices of cardiac function were improved in the two groups after the treatment(P<0. 05),and the im-provement of the observation group was better than that of the control group(P<0. 05). There was no obvious change in the pulmonary function before and after the treatment(P>0. 05). The incidence of adverse reactions in the two groups showed no significant differ-ence(P>0. 05). Conclusion:Bisoprolol combined with conventional treatment can improve cardiac function of the patients with CHF and COPD. The adverse effect on lung function is mild. Bisoprolol is safe and effective,which is worthy of promoted application.

Studies have shown that erythropoietin (EPO) may have neuroprotective effect on cerebral ischemia, and exogenous EPO may also exert neuroprotective effect on cerebral ischemic injury through blood-brain barrier. Its mechanisms may include the upregulation of the expressions of apoptosis inhibiting genes bcl-2 and bcl-xl, the expression of key proteases during the process of inhibiting apoptosis, inhibiting nitric oxide oversynthesis, protecting against glutamate-induced excitotoxicity, etc.

Radiofrequency ablation(RFA)is a new, safe, effective and minimally invasive treatment for solid tissue tumors extensively special for treating primary and metastatic hepatic cancer, particularly the small ones. Recent advances in the device technology and combination with other methods promotes RFA a realistic treatment option for larger tumors and furthermore RFA recently has been recommended for the treatment of neoplasms of bone, kidney, adrenal gland, lung, breast and thyroid gland, etc. This article comprehends the mechanism of RFA and current status of clinical application with evaluation of the clinical efficacy.

AIM:To develop a high performance liquid chromatography-electrospray ionization-mass spectrometry(HPLC-EMI-MS)analysis approach of Alisma orientalis(Sam.)Juzep.METHODS:A Zorbax SB-C_ 18 column was used under the gradient elution condition with acetonitrile-H_2O.The MS detection was performed on an Agilent ion trap mass spectrometer with an elctrospray ionization source under the positive ion detection mode.RESULTS:Alisol B,alisol B-23-aceate,alisol C-23-aceate,alisol C,16-oxoalisol A and 11-deoxyalisol C were identified by their MS and MS2 fragments.The MS2 fragments of the 6 compounds were completed.CONCLUSION:The total ion current chromatogram of Alisma orientalis(Sam.)Juzep.was more characteristic than of the UV chromatogram.6 bioactive compounds can be simultaneously analyzed by the HPLC-EMI-MS method established in this experiment and it is a good quality control of Alisma orientalis(Sam.)Juzep.

Objective: to observe the effect of Roux-en-Y Gastric Bypass (RYGB)on STZ induced type 2 diabetic rat model, and to clarify its initial mechanism. Methods: 42 type 2 diabeticrats were randomly allocated into operation group(group O 12 rats); sham group(group S 10 rats); diet control group(group F 10 rats); control group(group C 10 rats). Fasting glucose, Insulin Growth Factor-1 ( IGF1), fasting plasma insulin levels, weight and food intake were measured before and 1st , 2nd, 3 rd ,4th, 8th and 16 th week after operation. Results: 16 weeks after operation in the Group O, fasting glucose fell to (8.8?4.9)mmol/L, IGF1 increase to (148.6?7.3)ng/L ,fasting plasma increase to (74.7?9.2)mIU/L and weight decline to (212.6?15.1)g ,there was statistical significance compared with the levels of preoperation (P

The effects of zymosan-activated plasma(ZAP) on the lipid peroxides(LPO) content, the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-px) in lung lymph and their relationship to lung injury were studied in control (with normal leukocyte count) and leukopenic goats. In the control goats, after ZAP infusion, LPO production elevated, that was coincided with the increase of lung lymph flow (QL), and the clearence rate of lung lymph protein (LLPC). SOD activity was also elevated, but GSHpx activity was inhibited. In leukopenic goats, ZAP challenge caused an increase in LPO production, but its content was lower than that in control goats. No marked change was observed in QL and LLPC. The results suggest that: (1) Leukocytes and oxygen free radicals are involved in the pathogenesis of lung injury due to ZAP infusion; (2) Leukocytes play an important role in producing oxygen free radicals.