Objective: To investigate the curative effects of apoptin on the multidrug-resistant model, of human osteosarcoma cell line (R-OS-732). Methods: 363 bpVP 3 gene was cloned into the vector pIRES1 and the recombinant eukaryon expression vector pIRVP3 was transfected into R-OS-732 cells with liposome. The expression of apoptin gene at transcription level was proved by RT-PCR. The pathological changes of the cells was observed by light microscope and electronmicroscope. The transfected R-OS-732 cells were collected after 48 hours. The genomic DNA extracted from the cells was observed by agarose gel electrophoresis. The apoptosis rate of the cells was analysed by flow cytometry. Results: The expression of apoptin gene at transcription level had been proved by RT-PCR. The construction changes of the two groups were obviously different under light microscope: most of R-OS-732 cells in the transfected group existed in form of being away from the bottom of the culture dish after 24 hours, in form of apoptosis after 48 hours and in form of necrosis after 72 hours; but those cells in the controlled group grow luxuriantly. And under electronmicroscope there was much change of cell nucleus between the two groups. DNA ladder of the transfected cells was observed through agarose gel electrophoresis only one band was observed in the controlled group; but bands of fragmented DNA observed in ositive control group. Flow cytometry analysis showed that the apoptosis rate of the cells in the transfected group was relatively higher than that of the controlls( P

Objective To determine association between tongue carcinoma and polymorphism of urokinase-type plasminogen activator (PLAU) gene.Methods PLAU genotypes of 97 patients with tongue carcinoma and 91 health controls were examined by the PCR-RFLP method.Statistical analyses included a chi-square test for homogeneity and logistic regression analysis.Results The polymorphism in PLAU gene was rs2227564 C/T.Logistic analyses indicated that compared with CT and TT genotypes,CC genotype was risk factor for development of tongue carcinoma (adjusted OR =1.281,95 ％ CI 1.098-2.577,P =0.037).Conclusion PLAU polymorphism may be associated with development of tongue carcinoma.

Objective: To investigate the mode of cell death caused by NDV strain Changchun and NDV strain Siping. Methods: Plaque formation, cell suppression test, gel electrophoresis, and TUNEL assay were used after the cells were infected by NDV. Results: The apparently pathological changes were observed in chicken embryo fibroblasts, BHK, Hela, Hep 2, HCT and OS 732 tumor cells, but not in Wish cells. The higher suppressed effect on tumor cells was found in the NDV strain Changchun than that in the NDV strain Siping. There was no dose effect relationship between NDV and tumor cell suppression, only optimum dose NDV could cause maximal tumor cells inhibitory effect. Conclusion: The mode of cell death might be different after infection of NDV. The NDV strain Changchun killed tumor cells mainly through apoptosis, while the NDV strain Siping killed tumor cells mainly through necrosis. \[

OBJECTIVETo develop a new method for predicting adult height (PAH) based on the theory of Bayley-Pinneau and to evaluate the feasibility of this method in predicting adult height of girls with idiopathic central precocious puberty (ICPP) who were treated with gonadotropin releasing hormone agonist (GnRHa).

METHOD(1) The new method for PAH, i.e. PAH = Height/percentage of adult height for bone age, was established according to the theory of Bayley-Pinneau and the data from the national growth survey of children in the nine cities of China in the year 2005. (2) Data from seventeen female patients with ICPP received GnRHa treatment and achieved final adult height (FAH) were collected. Before and during the treatment, PAH was calculated by the method of Bayley-Pinneau and the new method.

RESULTThe mean FAH(cm) of the 17 patients with ICPP was 159.81 ± 4.95. The PAH (cm), before and after treatment for 1, 2 and 3 years, were 156.53 ± 3.63, 157.71 ± 3.62, 158.60 ± 3.50, 161.46 ± 4.50 and 161.56 ± 3.77, 161.68 ± 3.44, 162.04 ± 4.42, 163.13 ± 2.36 respectively by using the new method (PAH-D) and Bayley-Pinneau method(PAH-BP). The mean value of (PAH-D-FAH) and (PAH-BP-FAH) were -1.96 cm and 1.48 cm. However, the 95% confidence interval was (-3.82 cm to -0.11 cm), (-1.60 cm to 4.55 cm) for (PAH-D-FAH) and (PAH-BP -FAH). There was no significant difference between the values obtained before and after treatment in terms of PAH by use of Bayley-Pinneau method. By the new method, however, the results showed that the PAH increased and improved further with prolonged treatment periods. And at the end of treatment, there was no significant difference between PAH and FAH. The correlation coefficient was 0.93. Regression analysis showed that the trend line was in parallel with baseline data.

CONCLUSIONThe new method we established could predict better the final heights of girls with CPP who were treated with GnRHa.

Adult ; Body Height ; Child ; China ; Drug Therapy, Combination ; Female ; Gonadotropin-Releasing Hormone ; agonists ; Human Growth Hormone ; Humans ; Puberty, Precocious ; drug therapy ; Reference Values

OBJECTIVE: To investigate the anti-tumor effects and the mechanism of the recombinant fowlpox virus expressing Apoptin gene on human laryngeal carcinoma Hep-2. METHOD: Hep-2 cells cultured in vitro were infected with vFVApoptin. The anti-tumor effects on Hep-2 cells were measured through MTT staining and, the mitochondrial trans-membrane potential (delta psi m) and reactive oxygen species (ROS) were analyzed by flow cytometry. Western blot was used to detect the release of cytochrome c (Cyto c). Caspase-3/9 activities were measured by colorimetric assay. RESULT: vFVApoptin could restrain Hep-2 cells significantly and, had the function of down-regulating delta psi m, up-regulating ROS, promoting Cyto c release and activating Caspase-3/9. CONCLUSION Cyto c were released from mitochondria by the function of up-regulating ROS of vFVApoptin. Cyto c triggered Caspase-9 and, after the activation of Caspase-9, downstream apoptotic factors, such as caspase-3, were activated. Eventually, Hep-2 cells were suppressed by mitochondrial pathway apoptosis induced by vFVApoptin.
Animals ; Apoptosis ; drug effects ; Capsid Proteins ; genetics ; pharmacology ; Chicken anemia virus ; genetics ; Fowlpox virus ; genetics ; Humans ; Tumor Cells, Cultured

As a potential vectored vaccine,Newcastle disease virus(NDV)has been subject to various studies for vaccine development,while relatively little research has outlined the immunomodulatory effect of the virus in antigen presentation.To elucidate the key inhibitory factor in regulating the interaction of infected dendritic cells(DCs)and T cells,DCs were pretreated with the NDV vaccine strain LaSota as an inhibitor and stimulated with lipopolysaccharide(LPS)for further detection by enzyme-linked immunosorbent assay(ELISA),flow cytometry,immunoblotting,and quantitative real-time polymerase chain reaction(qRT-PCR).The results revealed that NDV infection resulted in the inhibition of interleukin(IL)-12p40 in DCs through a p38 mitogen-activated protein kinase(MAPK)-dependent manner,thus inhibiting the synthesis of IL-12p70,leading to the reduction in T cell proliferation and the secretion of interferon-γ(IFN-γ),tumor necrosis factor-α(TNF-α),and IL-6 induced by DCs.Consequently,downregulated cytokines accelerated the infection and viral transmission from DCs to T cells.Furthermore,several other strains of NDV also exhibited inhibitory activity.The current study reveals that NDV can modulate the intensity of the innate?adaptive immune cell crosstalk critically toward viral invasion improvement,highlighting a novel mechanism of virus-induced immunosuppression and providing new perspectives on the improvement of NDV-vectored vaccine.

Objective To verify the safety and efficacy of IONTRIS particle therapy system ( IONTRIS) in clinical implementation. Methods Between 6.2014 and 8.2014, a total of 35 patients were enrolled into this trial:31 males and 4 females with a median age of 69 yrs ( range 39?80) . Ten patients had locally recurrent head and neck tumors after surgery, 4 cases with thoracic malignancies, 1 case with hepatocellular carcinoma, 1 case with retroperitoneal sarcoma, and 19 cases with non?metastatic prostate carcinomas. Phantom dose verification was mandatory for each field before the start of radiation. Results Twenty?two patients received carbon ion and 13 had proton irradiation. With a median follow?up time of 1 year, all patients were alive. Among the 16 patients with head and neck, thoracic, and abdominal/pelvic tumors, 2, 1, 12, and 1 cases developed complete response, partial response, stable disease, or disease progression, respectively. Progression?free survival rate was 93.8％ (15/16). Among the 19 patients with prostate cancer, biological?recurrence free survival was 100％. Particle therapy was well tolerated in all 35 patients. Twenty?five patients (71.4％) experienced 33 grade 1 acute adverse effects, which subsided at 1 year follow?up. Six ( 17.1％) patients developed grade 1 late adverse effects. No significant change in ECOG or body weight was observed. Conclusions IONTRIS is safe and effective for clinical use. However, long term follow?up is needed to observe the late toxicity and long term result.

Objective To verify the safety and efficacy of IONTRIS particle therapy system ( IONTRIS) in clinical implementation. Methods Between 6.2014 and 8.2014, a total of 35 patients were enrolled into this trial:31 males and 4 females with a median age of 69 yrs ( range 39?80) . Ten patients had locally recurrent head and neck tumors after surgery, 4 cases with thoracic malignancies, 1 case with hepatocellular carcinoma, 1 case with retroperitoneal sarcoma, and 19 cases with non?metastatic prostate carcinomas. Phantom dose verification was mandatory for each field before the start of radiation. Results Twenty?two patients received carbon ion and 13 had proton irradiation. With a median follow?up time of 1 year, all patients were alive. Among the 16 patients with head and neck, thoracic, and abdominal/pelvic tumors, 2, 1, 12, and 1 cases developed complete response, partial response, stable disease, or disease progression, respectively. Progression?free survival rate was 93.8％ (15/16). Among the 19 patients with prostate cancer, biological?recurrence free survival was 100％. Particle therapy was well tolerated in all 35 patients. Twenty?five patients (71.4％) experienced 33 grade 1 acute adverse effects, which subsided at 1 year follow?up. Six ( 17.1％) patients developed grade 1 late adverse effects. No significant change in ECOG or body weight was observed. Conclusions IONTRIS is safe and effective for clinical use. However, long term follow?up is needed to observe the late toxicity and long term result.

177Lu-prostate specific membrane antigen(PSMA)radio-ligand therapy has been approved abroad for advanced prostate cancer and has been in several clinical trials in China.Based on domestic clinical practice and experimental data and referred to international experience and viewpoints,the expert group forms a consensus on the clinical application of 177Lu-PSMA radio-ligand therapy in prostate cancer to guide clinical practice.

OBJECTIVE To systematically review the background of bioequivalence assessment of nasal sprays and nasal aerosols and the guiding considerations for the bioequivalence assessment of these complex drug-device combination products by regulatory authorities in the United States, the European Union(EU) and China. METHODS This article provided detailed explanations on the innovative weight of evidence assessment approach adopted by the US Food and Drug Administration(FDA), and the statistical rationale, methods and considerations for the bioequivalence assessment of nasal sprays and nasal aerosols. Using the calculation methods described in the draft guidance for budesonide inhalation suspension and the draft guidance for fluticasone nasal spray propionate issued by FDA, the statistical parameters of two-sided and one-sided population bioequivalence calculation were realized through R language programming, and pseudo-code for the population bioequivalence (PBE) calculation programs was provided. This article also presented a comprehensive review of published guidelines and summaries review principles of the EU and China for nasal sprays and nasal aerosols equivalence assessment. RESULTS & CONCLUSION Nasal sprays/nasal aerosols is the focus of innovative and generic drug development in recent years. This paper provided valuable considerations references for the research and development, quality control and bioequivalence evaluation of generic preparations of nasal sprays/nasal aerosols.