Escherichia coli cytosine deaminase ( CD) gene was transfected into murine B16F10 melanoma cells by recombinant adenovirus AdCD in vitro . The tumor cells infected with AdCD were more sensitive to 5-fluorocytosine (5FC) than cells infected with a control adenovirus AdLacZ. The supernatant from B16F10 cells treated with AdCD/5FC was transferred to uninfected cells, and we found that only 6. 25 % of the supernatant could significantly inhibit the growth of wild type B16F10 cells. When AdCD was directly injected into established subcutaneous B16F10 tumors in mice followed by intraperitoneal injection of 5FC for 10 days, a significant reduction in tumor size and prolongation of survival period were observed. These studies not only explored the cytotoxic effects of AdCD/5FC on B16F10 melanoma cells in vitro and in vivo but also elucidated the mechanisms of its bvstander effect.

Objective To evaluate the efficacy and safety of phacoemulsification combined with trabeculectomy and phacoemulsification after trabeculectomy in patients with angle-closure glaucoma and cataract with high intraocular pressure.Methods We divided 32 eyes of 32 patients with angle-closure glaucoma and cataract with high intraocular pressure into 2 groups.Phacoemulsification combined with trabeculectomy were performed in group 1,and phacoemulsification after trabeculectomy were performed in group 2.The intraocular pressure,visual acuity,and complications were determined.Results In these 2 groups,the intraocular pressure decreased and the visual acuity increased 1 week after the surgery,without statistical significance.No serious complication was found in these 2 groups.Conclusion It is effective and safe to perform phacoemulsification combined with trabeculectomy in patients with angle-closure glaucoma and cataract with high intraocular pressure.

Platelet activating factor (PAF) is a biologically active membrane phospholipid mediator. In this study we investigated the effects of PAF on the lymphocyte proliferation, production of IL-2, natural killer cytotoxic factor (NKCF) and colony stimulating factor (CSF) by BALB/c mice splenocytes in vitro. The results showed that PAF inhibited lymphocyte proliferation at concentrations of 10-10~ 10-7 mol/L. CTLL-2, YAC-1 and munne bone marrow cells were used for the assays of IL-2, NKCF and CSF, respectively. Production of IL-2, NKCF and CSF from ConA stimulated murine splenocytes was significantly inhibited by PAF at 10-7 mol/L. Inhibition of spleen cells proliferation and secretion may play an important role in the pathological effects of PAF.

Objective To observe clinical therapeutic effect of treating insomnia by moxibustioning Balhui (DU20)and Sisbencong(EX-HN 1) . Methods 276 cases of insomnia were divided into treatment group and control group. The treatment group was treated by moxibustioning on Baihui (DU 20) and Sishencong(EX-HN 1); while the control group was treated by moxibutioning on Zusanli (ST 36). Evaluate the therapeutic effects and PSQI index of the two groups. Results Clinical symptoms got improvement in the both groups. The treatment group was better than the control group in terms of therapeutic effect of the (P＜0.05) and the improvement of PSQI (P＜0.01). Conclusion Moxibustioning on Baihui(DU 20)and Sishencong (EX-HN 1) has a good therapeutic effect for insomnia.

Objective To analyze the incidence and possible etiological factors of hyponatremia after acute cervical spinal cord injury (CSCI),and evaluate the effect of severity of CSCI,age,sex and injured segment on hyponatremia.Methods From June 2005 to March 2011,a series of patients with CSCI caused by cervical vertebras trauma were treated in our department.Except patients combined with craniocerebral injury or chronic diseases,other patients were divided into three groups:complete CSCI group,incomplete CSCI group and no neurological disorder group.Concentration of natrium in blood in all patients was analyzed respectively.Results All 102 patients (83 males,19 females) were selected with an average of 45.6years old.There were 23 patients with complete CSCI,60 with incomplete CSCI and 19 with no neurological disorder.Hyponatremia was found in 15 patients in complete CSCI group,23 patients in incomplete CSCI group and 1 patient in no neurological disorder group.The incidence of hyponatremia was significantly different between three groups,among which the complete CSCI group had the highest incidence.Multiple linear regression analysis showed hyponatremia was obviously correlated with the injury degree of spinal cord,but not correlated with the age,sex and injury segment of the patients.Conclusion Hyponatremia is a common complication in patients suffered from CSCI.Although the balance of natrium in blood is very complicated and influenced by many factors,autonomic nerve system and neuroendocrine system dysfunction,and hemodynamic changes after CSCI may play a key role in happening of electrolytical abnormality.

Objective To analyze the diagnosis and compound therapy of male breast cancer.Methods 33patients with male breast cancer were admitted and their documents were retrospectively analyzed.Results Follow up to December 2008.2 patients had recurrence,11 patients had distant metastases.Conclusion Male breast cancer is an uncommon disease.The diagnosis is mainly taken on postoperative pathology,ancillary lymph node metastasis is the main factor of prognosis.Combined therapy probably could improve the survival rate.

Adenoviruses harboring E. coli cytosine deaminase gene (AdCD) were used to transfect murine FBL-3 ery-throleukemia cells in vitro. FBL3 cells infected with AdCD were more sensitive to 5-fluorocytosine (5-FC) than cells infected with a control adenovirus AdLacZ. Further study indicated that this combination therapy (AdCD and 5-FC) killed tumor cells by inducing apoptosis of FBL-3 cells. The supematants from FBL-3 cells treated with AdCD/5-Fc were transferred on the culture system of uninfected (wild - type) FBL-3 cells, the result indicated that only 6.25% of the supernatant could induce significant cytotoxicity on wild type FBL3 cells. The results demonoustrated that bystander effect plays an important role in AdCD-mediated cytotoxicities. Direct injection of AdCD into established subcutaneous FBL3 tumor in mice followed by daily intraperitoneal injection of 5-FC for 10 days was found to inhibit tumor growth significant-

Antitumor effect of combined transfer of suicide gene and cytokine gene was evaluated in the present study. Adenoviruses expressing E. coli. cytosine deaminase (AdCD) and adenoviruses expressing murine interleukin 2 (AdTL2) were used for the treatment of tumor-bearing mice. The mice were inoculated s. c. with FBL-3 leukemia cells and 3 days later received intratumoral injection of AdCD in the presence or absence of AdIL2 followed by intraperitoneal 5-fluorocytosine (5FC) administration. The results demonstrated that tumor-bearing mice treated with AdCD/5FC in combination with AdTL2 showed more .potent inhibition of tumor growth and survived much longer as compared with mice treated with AdCD/5FC, AdEL2, AdlacZ/5FC or PBS. It was illustrated that the tumor mass showed obvious necrosis and inflammatory cell infiltration, and more CD4+ and CD8+ T cells infiltrated into the tumor after combined therapy. The splenic NK and CTL activities increased significantly in mice after combined transfer of CD gene and EH gene. Our results demonstrated that combined transfer of suicide gene and IL-2 gene could inhibit the growth of established tumor in mice significantly and induce antitumor immunity of the host efficiently.

Adenovirus harboring E. coli. cytosine deaminase gene (AdCD) and adenovirus encoding with lymphotactin gene (AdLtn) were used for gene therapy in vivo. BALB/c mice were inoculated subcutaneously with CT26 colon adeno-carcinoma cells and 3 days later received combined injection of AdCD and/or AdLtn followed by continuous injection with 5-fluorocytosine(5-FC) 300mg/kg. The results demonstrated that mice received combined therapy developed tumors most slowly and survived longest when compared with mice treated with AdCD/5-FC, AdLtn, AdlacZ/5-FC or PBS. To further explain the immunological mechanism of the antitumor effects by the combined therapy, we found that combined treatment with suicide gene and Ltn gene therapy achieved maximal cytotoxic effects of nature killer cells and specific cy-totoxic T lymphocytes. FACS analysis of the tumor mass demonstrated that AdCD/5-FC in combination with AdLtn therapy increased the expression of H-2K~d and B7-1 expression on tumor cells. The CD4~+ and CD8~+ cells infiltrated in the tumor mass after combined therapy were significantly increased when measured by FACS analysis. Our results demonstrated that combined transfer of suicide gene and lymphotactin gene induce nonspecific and specific antitumor immunity of the host and elicit more potent antitumor effect.