Objective To investigate the role of ultrasonic examination in the diagnosis d abdominal visceral injuries.Methods 263 patients with abdominal visceral injuries were examined with ultrasonic,the ultrasonic findings were comfirmed by surgery for patients underwent opeartion,for patients treated without surgery,the ultrasonic findings were compared with CT,other examinations and follow-up studies.Results The accuracy rate of ultrasonic examination was 87.07％.Conclusion The ultrasonic examination was simple,rapid,accurate and it should be the first-choice in the diagnosis of abdominal visceral injuries.

Objective:To investigate the preparation, optimization and in vitro properties of riboflavin sodium phosphate floating microspheres. Methods: The floating microspheres composed of riboflavin sodium phosphate and calcium alginate were prepared using ion gelatin-oven drying method. Results: The properties of the microspheres were investigated, including the buoyancy, release, appearance and entrapment efficiency. The formulation was optimized by response surface methodology (RSM). Conclusion: The optimized microspheres were round. The entrapment efficiency was 57.49%. All the microspheres could float on the artificial gastric juice over 8 hours. The release of the drug from the microspheres complied with Fick' s diffusion.

Objective To discuss the different factorial structure of HAMD Scale between the patients of liver Qi stagnation syndrome and liver stagnation and spleen deficiency syndrome. Methods Factorial structure of HAMD Scale of 91 depression patients of liver Qi stagnation syndrome and liver depression and spleen deficiency syndrome were statistically analyzed. Result There was difference between the two types of patients in factorial structure of HAMD Scale (P

Objective:To study the expression of kringle 1-3 domain fragment of human plasmihogen in E.coli and the anti-tumor activity of its product.Methods:The K1-3 domain fragment was cloned in expression vector pBV220,the resulted recombinant plasmid pBV-K13 was transformed into E.coli DH5? and its product was purified and assayed its bioactivity.Results:K1-3 domain fragment was expressed in(E.coli) DH5?.The results showed the expressed product covered 20% of the total bacterial protein on SDS-PAGE and the Western blot analysis showed that the product had immunological specificity with the antiserum of human plasminogen and inhibits the growth of chorioallantoic membrane(CAM) angiogenesis and mouse B16 melanoma.Conclusion:Human plasminogen K1-3 domain fragment was expressed in E.coli;the expressed product has anti-angiogenesis and anti-tumor activity.

Objective:To develop and study the properties of ion-exchange polyvinyl alcohol-acrylic acid microspheres(PVA-AA-Ms) for embolization.Methods:The PVA-AA-Ms were produced by the method of inverse suspension polymerization.The morphology and particle size were determined by optical microscope;FT-IR was used to investigate the special functional groups of PVA-AA-Ms;the carboxyl content of PVA-AA-Ms was measured by chemical titration;the compression elasticity was examined by texture analyzer(TA-plus).Pingyangmycin(bleomycin A5) was used as model drug to prepare drug-loaded PVA-AA-Ms.Drug loading and entrapment efficiency were measured through UV-spectrophotometer;in vitro drug release characteristic was detected by constant temperature vibration dialysis assay.Results:The PVA-AA-Ms were round and integrated.The average diameter of PVA-AA-Ms was 500 ?m with a range of 150-1 000 ?m.The carboxyl vibration was demonstrated by FT-IR and the content of carboxyl was 8.905 mmol/g.PVA-AA-Ms were mechanically stable with appropriate elasticity.Drug loading and entrapment efficiency were 30 g/L and 99.4%,respectively.The drug release rate was slow in phosphate buffer solution(PBS),88.3% of the drug was released after 24 h and the t50 was 2.19 h.Conclusion:PVA-AA-Ms prepared in this study were supposed to be suitable for clinical embolization according to the physicochemical properties.The high carboxyl content of PVA-AA-Ms which allowed them to load cationic drugs(e.g.,drug with amino group) through ion-exchange mechanism brought broad prospects for combination of embolization and chemotherapy.

Objective To explore the optimal storage methods to maintain serum clozapine (CZP) and N-desmethylclozapine (N-CZP) concentration in a long-term stablility. Methods Ten fresh clinical blood samples were collected, and each sample's serum was separated at volume of 0.5 ml into five pieces of 10 ml conic glass cen-trifuge tubes with cocks; then CZP and N-CZP were beth assayed with HPLC in samples collected on sampling day, stored at 4 ℃ and -20 ℃ for 12 weeks and 24 weeks,respectively. Results There was no significant difference in CZP among samples stored at 4 ℃ for 12 weeks[(525.1±124.3) μg/L] ,at -20 ℃ for 12 weeks[ (535.5± 126.7) and 24 weeks[ (532.5±126.7) μg/L] ,as well as collected on sampling day[(542.7±135.0) μg/L] (P>0.05); There was also no significant difference in N-CZP among samples stored at -20 ℃ for 12 weeks [(226.2±50. 7) μg/L] and 24 weeks[ (224.9±44.8) μg/L] and collected on sampling day[(236.9± 66.6) μL] (P>0.05). Conclusion CZP and N-CZP concentration would be maintained stable within 24 weeks under the refrigerated storage temperature of -20 ℃ at a fixed volume.

The applications of targeting gene delivery systems in tumor therapy have attracted extensive attention of researchers in recent years, as they can selectively deliver the therapeutic gene to tumor sites, improve the success rate of gene therapy and reduce the side effects. Therefore, design and development of novel gene delivery vehicles have been a hot area of current research. Recent studies have shown that mesenchymal stem cells (MSCs) have the ability to migrate towards and engraft into the tumor sites. Therefore, these properties make them a great hope for efficient targeted-delivery vehicles in cancer gene therapy. In this review, we examine the promising of utilization of MSCs as a targeted-delivery vehicle for cancer gene therapy, and summarize various challenges and concerns regarding this therapy.

Objective:To develop lipiodol-containing calcium alginate microspheres (LAMs) for embolization,and study the characterization for emoblization and the radiopacity. Methods:LAMs were prepared by dripping method. The preparation of LAMs was optimized by orthogonal experiment which involved effects of three factors (the volume ratio of lipiodol to the external aqueous solution,airflow rate,and the weight pushing the injector) at three levels on the responses to the size,polydisperse index and entrapment efficiency of LAMs. The morphology of LAMs was observed under microscope. The elasticity of LAMs was investigated by texture analyzer. The capability injected through catheter of LAMs was monitored by video spinning-drop tensionmeter. The radiopacity of LAMs was measured by X-ray imaging system after LAMs were injected into vas of a rat. Results:The optimal condition for preparation of LAMs was:the volume ratio of lipiodol to the external aqueous solution was 3∶ 10,airflow rate was 40 g/mL and the weight pushing the injector was 100 g. According to the optimized condition,LAMs were prepared and characterized. The mean diameter of LAMs was (493.9?42.6) ?m,the polydisperse index was 1.02 and the entrapment efficiency was (88.97?1.09)%. The LAMs were with round shape and smooth surface in view of photograph of microscope. The maximum average load was (1.09?0.18) N when LAMs were compressed to 60%. The LAMs were injected through catheter without much difficulty. The radiopacity of LAMs in rats was demonstrated to be visible under X-ray photography system. Conclusion:The radiopaque LAMs developed are suitable for the arterial embolization,with round shape,proper size,good elasticity,easy handling character and visible property under X-ray imaging. The radiopaque embolic agent is supposed to be useful for emoblization therapy.

AIM: Constructing plasmid that expresses human plasminogen kringle 5 gene to analyze the gene expression in E.coli. METHODS: The gene of human plasminogen kringle 5 was inserted into plasmid PBV220 EcoRI site by gene manipulation techniques and was transformed to E.coli TGI. The gene expression was observed by SDS-PAGE. RESULTS: Expression vector PBVK5 was constructed, and human plasmingen kringle 5 gene product was obtained at 42℃ induction. CONCLUSLON: Expression product of human plasminogen kringle 5 gene was soluble form of proteins, and the expression amount was 9.8% in E.coli TGI total proteins.

Objective To explore the dynamic changes of serum S100B and glial fibrillary acidic protein (GFAP) levels and their clinical significance in patients with delayed encephalopathy after acute carbon monoxide poisoning (DEACMP).Methods By means of enzyme-linked immunno-sorbent assay (ELISA),the serum S100B and GFAP levels from 33 DEACMP patients were assayed,and the condition changes were analyzed with three types of scale:the activity of daily living scale ( ADL),information-memory-concentration test (IMCT) and Hasegawa' s dementia scale(HDS).The comparison with 32 patients of acute carbon monoxide poisoning without DEACMP was also conducted.Results (1) The serum S100B( (0.60 ±0.21)ng/ml) and GFAP( (226.58 ±90.05 )ng/ml) in DEACMP group at acute stage were significantly higher than those in acute-CO-poisoning group ( (0.50 ± 0.20) ng/ml,( 183.04 ± 73.01 ) ng/ml) and those in DEACMP group at convalescent stage ( (0.51 ±0.16) ng/ml,(183.25 ±81.76)ng/ml) (all P values ＜0.05).(2)In DEACMP group,the serum S100B and GFAP at acute and convalescent stages were significantly correlated (at acute stage:r=0.466,P=0.006; at convalescent stage:r=0.365,P=0.037 ).(3)The S100B and GFAP in ineffective DEACMP patients at acute stage were significantly higher than those in the other groups ( all P values ＜ 0.05 ).(4) In DEACMP group,the ADL,HDS and IMCT scores( (45.21 ± 9.69),(8.26 ± 6.31 ),(9.91 ± 7.52) ) at acute stage were significantly different from those at convalescent stages( (33.67 ± 13.62),( 15.91 ± 10.83),( 19.06 ± 10.37 ) ) ( all P values ＜0.01 ).Conclusion There is secondary brain insult (SBI) in DEACMP; glial activation may play an important role.The S100B and GFAP levels may be associated with the prognosis of DEACMP.