Objective: To investigate the effects LASS2 gene on the metastasis of human hepatocellular carcinoma cell line, HCCL3. Methods: The expression level of LASS2 mRNA in HCCLM3 cells was analyzed by northern blotting in high metastatic HCCLM3 cells and in low metastatic MHCC97-L cells. The eukaryotic expression vector pCMV-HA2-LASS2 was constructed and transfected into HCCLM3 cells. The stable clone with LASS2 overexpression was selected by G418 screening. The metastatic ability of HCCLM3 cells such as migration and invasion was observed in vitro after LASS2 overexpression. The synthesis, secretion, and activation of matrix metaloproteinase-2 (MMP-2) were examined by western blotting, zymography, and in situ zymography. Results: Northern blot analysis showed that the level of LASS2 mRNA decreased in HCCLM3 cells compared with MHCC97-L cells. LASS2 overexpression inhibited the ability of migration and invasion of HCCLM3 cells (P <0. 001 ). The synthesis of MMP-2 was not different but the secretion and activation of MMP-2 were down-regulated in HCCLM3 cells afterLASS2 overexpression. Conclusion: Overexpression of LASS2 down-regulated the secretion and activation of MMP-2 in HCCLM3 cells and inhibited the cell ability of migration and invasion indicating that LASS2 gene had inhibitory effects on the metastasis of HCCLM3 cells.

Objective To explore the changes of bone metabolic markers during early stage of preterm infants, as well as the relationship with their nutrition status. Methods Preterm infants with gestational age 30-35 weeks admitted to our Hospital were collected from November 2012 to April 2013. Venous blood samples obtained within 24 hours after birth and between 8:00-9:00 AM two weeks after birth were used to determine the Serum β-CTx, osteocalcin ( OC) and propeptide of type I procollagen (PINP) levels by Electro-Chemiluminescence. Analysis of changes of these bone metabolic markers and their relationship with early stage nutrition related indicators were also performed. Results A total of 60 premature infants were collected. There was no significant correlation among serum β-CTx, OC and PINP within 24 hours after birth ( r=0. 170, P＞0. 05 ) . The Serum β-CTx within 24 hours after birth was negatively correlated with gestational age (r= -0. 603, P＜0. 05), whereas the serum OC within 24 hours after birth was positively correlated with gestational age ( r=0. 581, P＜0. 05 ) . However, PINP wasn′t correlated with gestational age significantly (r=0. 134,P＞0. 05). Serumβ-CTx, OC and PINP at 2 weeks after birth increased significantly from the baseline level detected within 24 hours after birth ( P＜0. 05 ) .Δβ-CTx was positively correlated with ΔOC (r=0. 600,P＜0. 05). There was no significant correlation between ΔPINP and Δβ-CTx (r=0. 045,P＞0. 05), as well as ΔOC and ΔPINP (r=0. 110,P＞0. 05).ΔOC was positively correlated with average daily calorie ( P＜0. 05 ) and average daily P/E ( P＜0. 05 ) , negatively correlated with cumulative loss of caloric ( P＜0. 05 ) . There was no significant correlation between Δβ-CTx or ΔPINP with nutrition related indicators of this study. Conclusions Serum OC within 24 hours after birth of preterm infants and their gestational age are positively correlated, while β-CTx detected at the same time and gestational age are negatively correlated. Vigorous metabolism of premature bone occurs during the first two weeks after birth, as the serum β-CTx, OC and PINP levels increased significantly. We suggest that reasonable calorie intake and appropriate protein calorie ratio at early stage after birth is very important for the development of bone of preterm infants.

OBJECTIVETo investigate the penile erectile function of hospitalized male patients with cardiovascular diseases, the incidence of erectile dysfunction (ED) in this cohort, and the relationship of ED with cardiovascular diseases and its risk factors.

METHODSUsing a self-designed questionnaire, we conducted an investigation among the hospitalized patients in the Department of Cardiovascular Diseases of the First and Second Affiliated Hospitals of Xi'an Jiaotong University. We measured their body height, body mass index (BMI), waist circumference, hip circumference, and blood pressure, obtained their personal data, past history, metabolic indexes, and erectile function scores by IIEF-5, and analyzed the risk factors of ED using univariate and multivariate logistic regression and OR analyses.

RESULTSTotally, 225 valid questionnaires were included in this investigation, which showed a 66.7% incidence of ED, 15.8% mild, 27.0% mild to moderate, 17.6% moderate, and 6.3% severe. The incident rates of ED in the 18-35 yr, 36-49 yr, 50-65 yr, and > 65 yr age groups were 13.6%, 39.1%, 89.2%, and 91.2%, respectively. Univariate logistic regression analysis manifested that the risk factors of ED in the patients with cardiovascular diseases included age (OR = 3.122, 95% CI 2.040-4.779), smoking (OR = 1.768, 95% CI 1.209-2.584), BMI (OR = 1.261, 95% CI 1.114-1.427), total cholesterol (OR = 1.77, 95% CI 1.339-2.340), TC/HDL (OR =1.715, 95% CI 1.349-2.181), hypertension (OR = 1.717, 95% CI 1.110-2.658), and coronary heart disease (OR = 2.235, 95% CI 1.169-4.275), while multivariate logistic regression analysis showed the risk factors to be age (OR = 4.99, 95% CI 2.264-10.998), financial condition, (OR = 2.804, 95% CI 1.127-6.976), smoking (OR = 2.109, 95% CI 1.179-3.772), BMI (OR = 1.414, 95% CI 1.136-1.760), and TC/HDL (OR = 2.001, 95% CI 1.016-3.943).

CONCLUSIONThe incidence of ED is high in hospitalized patients with cardiovascular diseases and rises with the increase of age. Age, smoking, financial condition, BMI, and TC/HDL are the risk factors of both ED and cardiovascular diseases, and financial condition is closely associated with ED.

Adult ; Aged ; Blood Pressure ; Body Height ; Body Mass Index ; Cardiovascular Diseases ; complications ; Erectile Dysfunction ; epidemiology ; etiology ; Hospitalization ; Humans ; Hypertension ; complications ; Imidazoles ; Incidence ; Male ; Middle Aged ; Pyrimidines ; Regression Analysis ; Risk Factors ; Smoking ; adverse effects ; Waist Circumference ; Young Adult

OBJECTIVE: This study aimed to explore the relationship among expression of Survivin and MRP and drug resistance in NPC. METHOD: Expression of Survivin were detected by immunohistochemistry method in 45 cases of NPC and 24 cases of normal mucous membrane of nasopharynx (NMMN). The relationship between expression of Survivin and pathological factors in NPC were analysized. Expression of Survivin and MRP were detected in 31 patients of NPC with paclitaxel resistance and 20 patients of NPC without paclitaxel resistance. The relation- ship among the expression of Survivin or MRP and paclitaxel resistance in NPC were analysized. The paclitaxel resistance cell line, 5-8F-PTX(+); was established by a step-increased method. The expression of Survivin and MRP were detected by western blot in 5-8F-PTX(+) and 5-8F. RESULT: The positive were 71. 1% (32/45) in NPC and 8.33% (2/24) in NMMN. And there were significantly differences between them (P < .05). There were relationship among expression of Survivin and differentiation degree, lymph node metastasis, distant metastasis, and clinic stages of NPC. The positive were 75.9% (31/39) in moderately differentiated NPC and 16.7% (1/6) in lowly differentiated NPC, respectively. There were significantly differences between them (P < 0.05). The positive of Survivin were 83.9% (26/31) in NPC patients with paclitaxel resistance and 45.0% (9/20) in NPC patients without Paclitaxel resistance, respectively. There were significantly differences between them (P < 0.05). The positive of MRP were 87.1% (27/31) in NPC patients with paclitaxel resistance and 40.0% (8/20) in NPC patients without paclitaxel resistance, respectively. There were significantly differences between them (P < 0.05). There were positive correlation between the expression of Survivin and MRP in NPC patients with Paclitaxel resistance. The expression of Survivin and MRP were higher in 5-8F-PTX(+) than in 5-8F. The IC50 of paclitaxel, cDDP, 5-FU and Vincristine were significantly higher in 5-8F-PTX(+) than in 5-8F. CONCLUSION There were relationship among the expression of Survivin and difference, metastasis and TNM stages of NPC. Survivin may serves as a molecular marker for development and progress in NPC. There were relationship among the high expression of Survivin and MRP and increasing of drug resistance in NPC.
Antineoplastic Agents ; pharmacology ; Carcinoma ; Cisplatin ; Drug Resistance, Neoplasm ; Fluorouracil ; Humans ; Immunohistochemistry ; Inhibitor of Apoptosis Proteins ; genetics ; metabolism ; Lymphatic Metastasis ; Multidrug Resistance-Associated Proteins ; genetics ; metabolism ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; genetics ; metabolism ; Nasopharynx ; metabolism ; Paclitaxel ; pharmacology ; Survivin ; Vincristine

Alkaline Phosphatase ; blood ; Biomarkers ; blood ; Child, Preschool ; Female ; Humans ; Infant ; Isoenzymes ; blood ; Phosphorus Metabolism Disorders ; blood ; diagnosis ; Risk Factors

The technology of info-visualization is recommended.The main research of info-visualization system of medical equipment is proposed and the key technologies involved in that system are discussed.

Objective To explore how the freshmen's self-efficiency influence the acute stress psychological reaction. Methods Self-efficiency, coping styles, personality were assessed by relevant questionnaires, and acute stress psychological reaction was measured by means of designing a experiment in 683 freshmen of military colleges.Results ①Freshmen with low self-efficiency had higher scores in Si,Mas,Dy,Nc(t=8.05,7.49,6.36,3.93,P<0.01)and lower scores in Do,Re,Pc(t=5.12,2.11,3.90,P<0.05 or P<0.01)than freshmen with high one.Among all factors mentioned above, Si,Dy,Pc got into regression equation. ② Freshmen with low self-efficiency had lower stress score than ones with higher self-efficiency(t=3.92,P<0.01).Freshmen's self-efficiency was positively correlated to total scale score and 3 subscale scores of the acute psychological stress reaction questionnaire(r=0.187～0.346,P<0.05,P<0.01).Conclusion Personality,coping style exerted influence on the freshmen's self-efficiency which is a mediator between stressors and acute psychological stress reaction.

Objective To establish stable Graves disease (GD) mice models with immunization and electroporation (EP).Methods Fifty mice were divided into 3 groups by random number table method:experimental group (n =30),control group (n =10),blank group (n =10).Recombinant plasmid pcDNA3.1/hTSHR268 was constructed and injected to bilateral gastrocnemius in experimental group mice on the 1st,4th,7th and 10th week.The same volume of normal saline was injected in the control group and blank group at the same time.Both experimental group and control group were subjected to EP at the same time and the same location to enhance immunization.Serum T4 was tested with radioimmunoassay.TRAb N-terminal (TRAb N) and TRAb C-terminal (TRAb C) antibodies were tested with ELISA.Whole body 99TcmO4-imaging was performed and then thyroid morphology and pathology were investigated.Data were analyzed by one-way analysis of variance and the least significant difference (LSD) t test.Results GD BALB/c mice models were built successfully (80％,24/30).Serum T4 increased from (16.06±5.16) nmol/L at the basic level to(95.04±68.92) nmol/L on the 12th week(F=18.906,t=-5.598,P＜0.05).Serum TRAb N antibody increased from (0.006±0.002) U/L at the basic level to (0.251±0.110) U/L on the 12th week(F=47.491,t=-10.869,P＜0.05).Serum TRAb C antibody increased from (11.176±2.635)×103 arbitrary unit (AU)/L at the basic level to (46.395±22.001)× 103 AU/L on the 12th week(F=14.642,t =-7.787,P＜0.05).On the 18th week serum T4,TRAb N and TRAb C decreased to (36.64±23.68) nmol/L,(0.094±0.053) U/L and (24.456±6.725)× 103 AU/L respectively,which were still higher than those preimmune levels(t=-4.161,-8.085,-9.008,all P＜0.05).There were no significant change of T4,TRAb N and TRAb C in the control group and blank group.After 4 times of immunization,the 99TcmO4-uptake by thyroids in immunized mice increased.The thyroid glands of immunized mice showed enlargement.Microscope examination showed that there were lymphocytes infiltration,colloid decrease and epithelial cell proliferation in thyroids of immunized mice.Conclusion GD mice models were successfully established by injecting recombinant plasmid pcDNA3.1/hTSHR268 and EP.

BACKGROUND:Human umbilical cord blood contains a large number of hemopoietic stem cels and mesenchymal stem cels. Neonate umbilical cord blood-derived stem cels show milder immunological rejection and lower immunogenicity than peripheral blood- and bone marrow-derived mesenchymal stem cels. OBJECTIVE:To investigate the feasibility of umbilical cord blood-derived CD133 cels for treatment of gestational diabetes, so as to provide novel methods for clinical treatment of gestational diabetes. METHODS:Mouse models of gestational diabetes were established by high-fat and high-sugar diet feeding. Umbilical cord blood-derived CD133 cels were sorted by flow cytometry sorting technique and then transplanted into mouse models of gestational diabetesvia the tail vein. At 7 days after cel transplantation, serum levels of fasting blood glucose, fasting insulin, total cholesterol and triacylglycerol were measured and mouse pancreatic tissue injury and repair was observed by hematoxylin-esoin staining. Mouse insulin resistance index and pancreatic islet function were analyzed using the homeostatic model assessment. RESULTS AND CONCLUSION:Umbilical cord blood-derived CD133 cels could be isolated from umbilical cord blood monocytes using flow cytometry sorting technique, with cel purity of (90.24±2.56)%. At 7 days after cel transplantation, serum levels of fasting blood glucose, fasting insulin, total cholesterol and triacylglycerol were significantly decreased, insulin resistance index was significantly decreased, and pancreatic islet function was significantly improved in mouse models of gestational diabetes (alP < 0.05). In addition, atrophy of pancreatic tissue and infiltration of inflammatory cels were reduced. These results show that umbilical cord blood-derived CD133 cel transplantation can improve the disease condition of gestational diabetes by repairing injured pancreatic tissue, decreasing insulin resistance index and improving pancreatic islet function.

In order to study life science,the cell culture device is the foundation contributing to the research.With the development of technology in the area,cell culture devices have been significantly improved,and different kinds of devices were designed and novel devices also have been invented.This article provides an overview of the history and present situation of the cell culture devices.The future trend is prospected.