Objective:To study the effects of glucosamine(GlcNH2) on immune function in mice.Method:The effects of GlcNH2 on murine proliferation of splenocytes were carried out in vitro.After feeding mice by GlcNH2,the phagocytotic functions of mononuclear macrophage,murine delayed type hypersensitivity(DTH) caused by sheep red blood cells(SRBC),the ability of antibody production(tested by HC50),and the index of immune organs(thymus and spleen) were deteimined in vivo.Results:GlcNH2 could promote the proliferation of splenocytes,phagocytotic functions of mononuclear macrophage,DTH,the ability of antibody production and the index of immune organs.Conclusion:Glucosamine can enhance immune function in mice such as cellular immunity,humoral immunity and non-specific immunity.

Objective To investigate the antitumor effect of special promoter-controlled Gibbon ape leukemia virus membrane fusion glycoprotein (GALV.fus) mediated by type Ⅰ herpes simplex virus (HSV-Ⅰ) on lung adenocarcinoma. Methods Recombinant HSV-Ⅰ plasmids encoding GALV.fus was introduced into green monkey kidney cells(Vero)by liposome to amplify the virus, and then the virus was transfected into lung adenocarcinoma (A549), human fetal fibroblasts (HFL-Ⅰ GNHu 5) and human lung adenocarcinoma xenografts which were established in nude mice subcutaneously to observe antitumor and cytotoxic effect in vitro and in vivo; Recombined cytomegalovirus (CMV) containing GALV.fus or enhanced green fluorescence protein were served as control. Results Recombinant HSV-Ⅰ virus were packed successfully. Heterotransplantative tumourigenicity of the tumour was 100% in nude mice after A549 cells were inoculated. Recombinant HSV-Ⅰvirus exerted obvious antitumor effects in vitro, with relative survival rate of 23%, while for CMV virus containing GALV. fus, the rate was 20%, and for CMV virus encoding EGFP, the rate was 68%. Recombinant HSV-Ⅰvirus also showed striking antitumor effect on the implanted tumor. Conclusion GALV.fus has powerful effect against lung cancer in vitro and in vivo and maybe a promising candidate for gene therapy.

To evaluate the efficacy and safety of Tanreqing Injection, a compound traditional Chinese herbal medicine, for community-acquired pneumonia.

Objective To explore the clinical significance of tumor pathological length in evaluation of prognosis of esophageal squamous cell carcinoma.Methods 421 patients with esophageal squamous cell carcinoma were selected as study subjects.Each patient's data of gender,age,pathological examination(tumor pathological length),survival time,cancer stage,operation mode were collected.The patients were divided into two groups:≤4 cm group(189 cases) and >4 cm group(232 cases), and the constituent ratios of gender,age,or operation mode and the survival rate between the two groups were analyzed.Results There were no significant differences in gender composition,age structure and operation mode between the two groups(x2=2.03,2.41,0.06,all P>0.05);There was positive correlation between tumor pathological length and TNM stage(CMH=68.07,P<0.01).The 25%,50% and 75% quantiles of survival period in the group whose tumor length was less than or equal to 4 cm were 28,40 and 58 months,respectively,which in the group whose tumor length was more than 4 cm were 19,31 and 61 months,and there was significantly difference between the two groups(x2=44.88,P<0.01), the group whose tumor length was less than or equal to 4 cm had higher survival rate than the group whose tumor length was more than 4 cm.In the further stratification analysis by TNM stage,the group whose tumor length was less than or equal to 4 cm had higher survival rate than the group whose tumor length was more than 4 cm in theⅠstage patients(x2=5.61,P<0.05);the group whose tumor length was less than or equal to 4 cm had higher survival rate than the group whose tumor length was more than 4 cm in theⅡstage patients(x2=4.62,P<0.05);the group whose tumor length was less than or equal to 4 cm had higher survival rate than the group whose tumor length was more than 4 cm in the Ⅲ stage patients(x2=4.88,P<0.05).Conclusion Tumor pathological length is an effective prognostic factor for esophageal squamous cell carcinoma,and the critical value can be determined as 4 cm.

OBJECTIVETo study the clinicopathologic characteristics of peripheral neuroblastic tumors and to evaluate the prognostic significance of these features.

METHODSThe clinical and pathologic findings were retrospectively reviewed in 121 cases of peripheral neuroblastic tumor. The clinical outcomes of patients were evaluated. The three-year event-free survival rate was analyzed, with respect to age of patients, Evan's staging, International Neuroblastoma Pathology Classification and mitosis-karyorrhexis index.

RESULTSThe median age at diagnosis was 2.7 years; and 96 cases (79.3%) occurred in patients younger than 5 years old. The number of cases in Evan's staging I, II, III, IV and IVs was 24, 39, 24, 29 and 5, respectively. There were 82 cases of neuroblastoma (NB) (including 2 cases of undifferentiated NB, 52 cases of poorly differentiated NB and 28 cases of differentiating NB), 9 cases of ganglioneuroblastoma, intermixed type (GNBi), 19 cases of ganglioneuroma, maturing type (GN) and 11 cases of ganglioneuroblastoma, nodular type (GNBn). Forty-nine cases were in the favorable histology subgroup and 72 cases in the unfavorable histology subgroup. The overall three-year event-free survival rate of the 121 cases was 73.0% ± 4.3%. The three-year event-free survival rates were associated with age (P = 0.002), Evan's staging (P = 0.000), histologic category (P = 0.000), mitosis-karyorrhexis index (P = 0.043), prognostic subgroup (P = 0.000).

CONCLUSIONSMost of the peripheral neuroblastic tumors occur in the children younger than 5 years old. It is composed of NB, GNBi, GN and GNBn. The three-year event-free survival rate is approximately 70%. Significant prognostic parameters include age of patients, Evan's staging, International Neuroblastoma Pathology Classification and mitosis-karyorrhexis index.

Age Factors ; Antigens, Nuclear ; metabolism ; Child ; Child, Preschool ; Disease-Free Survival ; Female ; Ganglioneuroblastoma ; metabolism ; pathology ; surgery ; Ganglioneuroma ; metabolism ; pathology ; surgery ; Humans ; Infant ; Infant, Newborn ; Male ; Neoplasm Staging ; Nerve Tissue Proteins ; metabolism ; Nestin ; metabolism ; Neuroblastoma ; metabolism ; pathology ; surgery ; Peripheral Nervous System Neoplasms ; metabolism ; pathology ; surgery ; Phosphopyruvate Hydratase ; metabolism ; Retrospective Studies ; S100 Proteins ; metabolism

Objective To explore the effect of calreticulin (CRT) on cell proliferation and invasion of human hepatocellular carcinoma cell line SMMC-7721 and HepG2.Methods SMMC-7721 and HepG2 cells were transfected with small interfering RNA (siRNA).The transfection rate was detected by immunoflurescence and western blot.The cell proliferation,invasion and apoptosis of SMMC-7721 and HepG2 cells were determined by using cell counting kit-8 (CCK-8) assays,transwell assays and flow cytometry,respectively.The p-Akt and Akt levels were detected by western blot.Results The growth inhibition rate in the siRNA experimental group of SMMC-7721 and HepG2 cells for 24,36 and 48 h were (41.0 ±2.2) ％,(46.5 ±1.6)％,(59.7 ±2.2)％ and (36.8 ±2.7)％,(47.3 ± 1.8)％,(61.5 ±3.2)％,respectively.The apoptosis rate after down-regulating the expression of CRT in SMMC-7721 and HepG2 cells for 36h were (45.2 ± 9.1) ％ and (48.9 ± 8.0) ％,respectively.Compared with the blank group and the negative control group,the growth inhibition rate in the siRNA experimental group was lower (P ＜0.05),but the apoptosis rate was significantly higher (P ＜ 0.05).Transwell experiments confirmed that the numbers of invaded SMMC-7721 and HepG2 cells in the blank group and the negative control group and siRNA experimental group were (96.8±7.3),(95.6±5.4),(34.0±4.2) and (124.0 ±9.9),(121.6 ±7.0),(70.4±9.5),respectively,indicating that cell invasion in the siRNA experimental group was significantly suppressed (P ＜ 0.05).The expression of p-Akt was decreased (P ＜ 0.05) after down-regulating the expression of CRT for 36h.Conclusion CRT gene silencing by siRNA can inhibit the SMMC-7721 and HepG2 cell proliferation and invasion,but increase the cell apoptosis by regulating PI3K/Akt signal pathway.

Objective To investigate the effect of syndecan-4 on the proliferation and extracellular matrix (ECM) secretion of human mesangial cells(HMC) stimulated by basic fibroblast growth factor (bFGF) and to evaluate the role of syndecan-4-PKCα pathway. Methods The expression of syndecan-4 in HMC was observed by immunofluorescence. After the down-regulation of syndecan-4 in HMC by RNA interference, the cell proliferation was detected by MTT. The secretion of fibronectin (FIN), type IV collagen, type Ⅰ collagen was assessed by ELISA. The copy number of syndecan-4 and PKCα was measured by fluorescent quantitation PCR at different time points. Results Syndecan-4 was expressed in HMC. bFGF could promote the cell proliferation and ECM secretion together with the PKCα copy number per million house-keeping genes of HMC, which could be reversed by the syndecan-4 siRNA transfection (MtT: 48-60 h, P<0.01; FiN: 24 h, P<0.01, 48-96 h, P<0.05; type Ⅳ collagen: 72-96 h, P<0.05; PKCa: 0 h, P<0.05, 12-48 h, P< 0.01). Conclusion Syndecan-4 may regulate the proliferation and ECM secretion of HMC stimulated by bFGF through syndecan-4-PKCα pathway.

To evaluate the efficacy and safety of new drugs of traditional Chinese medicine (TCM) for acute upper respiratory tract infection (common cold).

Objective To investigate the incidence and risk factors of surgical site infection(SSI)in neurosurgical patients in a tertiary first-class hospital,and provide reference for the prevention and control of SSI.Methods 47 neurological patients with SSI (49 patients developed SSI,2 were excluded from study due to the lack of appropriate control subject)from December 31 ,2011 to December 31 ,2012 were as infected group,and 94 patients without SSI (1 ∶2 matching)were as non-infected group,risk factors for SSI were analyzed retrospectively.Results There was no significant difference in general condition of two groups of patients (all P >0.05 );among 3 708 patients,49 (1 .32%)developed SSI;intracranial infection was the main type of SSI (89.80%);27 patients were performed ce-rebrospinal fluid (CSF)bacteriological detection,6 (22.22%)of whom were positive for CSF bacteriological detec-tion.Univariate conditional logistic regression analysis showed that risk factors for SSI in neurosurgical patients were operational risk assessment score (OR =2.04),frequency of preoperative antimicrobial use(OR =3.15 ),fre-quency of intraoperative antimicrobial use(OR=2.58),duration of operation(OR=2.70),surgical blood loss(OR=1 .72),indwelling drainage tube(OR=4.30),duration of indwelling drainage tube after operation(OR=2.06),and time for initial dressing change(OR=1 .66);Multivariate conditional logistic regression analysis showed that the in-dependent risk factors for SSI were frequency of preoperative antimicrobial use(P =0.03,OR =4.86),duration of operation(P =0.05,OR = 2.89 ),and time for initial dressing change after operation (P = 0.01 ,OR = 1 .92 ). Conclusion Risk factors for SSI in department of neurosurgery are multiple,duration of operation,duration of in-dwelling drainage tube after operation,and time for initial dressing change after operation are major risk factors.

Objective To assess the rotational set-up errors in patients with thoracic neoplasms. Methods 224 kilovohage cone-beam computed tomography (KVCBCT) scans from 20 thoracic tumor pa-tients were evaluated retrospectively. All these patients were involved in the research of " Evaluation of the residual set-up error for online kilovohage cone-beam CT guided thoracic tumor radiation". Rotational set-up errors, including pitch, roll and yaw, were calculated by 'aligning the KVCBCT with the planning CT, using the semi-automatic alignment method. Results The average rotational set-up errors were -0.28°±1.52°, 0.21°± 0.91° and 0.27°± 0. 78° in the left-fight, superior-inferior and anterior-posterior axis, respective-ly. The maximal rotational errors of pitch, roll and yaw were 3.5°, 2.7° and 2.2°, respectively. After cor-rection for translational set-up errors, no statistically significant changes in rotational error were observed. Conclusions The rotational set-up errors in patients with thoracic neoplasms were all small in magnitude. Rotational errors may not change after the correction for translational set-up errors alone, which should be e-valuated in a larger sample future.