Objective To observe the change of tumor cells on sodium phenylacetate(NaPA) treating G422 glioma mice,and explore its mechanism.Methods Two kinds of mice models(intracranial and muscular G422 glioblasloma cells) were established,and were divided into five groups,among which 3 groups for expe rimental groups,they were received NaPA(1200,800,400 mg/kg?d).In the other two groups,the positive control group was administered BCNU(20 mg/kg) only one time.The negative control group was given saline 24 h later tumor inoculation,these mice bagan to be administered.The experimental group and negative control group were injected NaPA and saline for 14 days respectively.After that,the drug toxicity,the survival period,survival rate of the mice were observed,and the pathology and ultrastructure of glioma in every group were also observed.The muscular tumor mice were sacrificed for measurement of tumor suppression rate.Results NaPA can prolong the life span of the mice with glioma;it has concentration dependent inhibition to glioma proliferation;the pathology and electron microscopy showed the decrease of glioma nuclei fission image treated by NaPA,the increase of rough endoplasmic reliculum and the cell proptosis were found,it demonstrated the tumor cells had differentiation trend.Conclusion NaPA had antitumor effect by inducing glioma cell differentiation and inhibiting the growth of tumor.

Objective To observe the curative effect of sodium phenylacetate (NaPA) on induced differentiation in human glioma cells P 168 in vitro,and preliminarily probe into its mechanism.Methods MTT assay flow cytometry and cell microscope were used to test the changes of P 168 cells treated by different concentrations of NaPA in vitro, and observed ultrastructureal changes of tumor cells.Results NaPA could inhibite the growth of human glioma,show the inhibition effect of time concentration dependent,the flow cytometric was used to find S phase is 11.99% or 13.17% in the NaPA treated P 168 cells and 20.17% in the NaPA untreated P 168 cells. Electron microscope of NaPA treated P 168 cells demonstrated there were rich mitochondria, rough endoplasmic reticulum and elastic filament,but in NaPA untreated P 168 cells,there were numerous scattered polyribosomes appeared.Conclusion NaPA not only inhibit the growth of P 168 haman glioma cells, but also remarkably induce the differentiation of these cells in vitro.

Objective: To study the comprehensive utilization of Herba Ephedrae resources during the extraction process of ephedrin, that is the extracting of porphyrin compound.Methods: The process conditions for preparing sodium copper porphyrin were optimized by the two preparation processes and twice orthogonal tests. Results: Herba Ephedrae was powdered, steeped and boiled in alcohol, saponified, then extracted with xylene. The ephedrin was extracted from the upper layer of xylene extraction solution and sodium copper porphyrin was obtained from the lower layer by copper substituton, acidulation and alkalization. Conclusion: The optimum preparation process for producing sodium copper porphrin of Herba Ephedrae which is superior to porphyrin in the stability and colour is ascertained.

Objective To analyze the distribution of B-cell subtypes and IgG subclasses in pa-tients with non-small cell lung cancer ( NSCLC) and to investigate their potential functions in the progress of NSCLC.Methods Flow cytometry analysis was used to detect the distribution of immature B cells, memory B cells and mature B cells in 25 healthy subjects and 55 patients who were at different clinical stages of NSCLC.Enzyme-linked immune-sorbent assay ( ELASA) was performed to measure the concentrations of IgG1, IgG2, IgG3, IgG4 and total IgG, as well as the ratio of each IgG subclass in total IgG.Results The percentages of immature and memory B cells in CD19+B cells were positively correlated with the progress of NSCLC.The ratio of IgG4/IgG gradually increased along with the development of NSCLC, while that of the other three IgG subclasses showed no significant changes as compared with that of the control group.Conclu-sion The imbalanced distribution of B-cell subtypes and the up-regulated ratio of IgG4/IgG were closely as-sociated with the development of NSCLC.This study paved the way for further investigation on more effective immune therapy strategies targeting NSCLC.

Objective: To obtain ephedrine with porphyrin copper sodium from Herba Ephedrae. Methods: Application of ethanol to obtain ephedrine and porphyrin copper sodium from ephedra. The spoinfy reaction of porphyrin will take place, the integral ephedrine will turn into free ephedrine (dissolved in ether), when the liquor of ethanol of ethanol of ephedra are heated with NaOH. Using dimethylponyle to extract, the liquor will into two phases, one's (including sponify porphyrin) is water phase, the other's (including free ephedrine) is ether phase. Results: The yield proportion of ephedrine is 0.72%, and porphyrin copper sodium is 1.8%.Conclusion: It is practicable to extract porphyrin copper sodium with ephedrine from Herba Ephedrae.

Intravascular ultrasound (IVUS) is widely used in coronary artery examination. Ultrasonic elastography combined with IVUS is very conspicuous in identifying plaque component and in detecting plaque vulnerability degree. In this study, a simulation model of the blood vessel based on finite element analysis (FEA) was established. The vessel walls generally have radial changes caused by different intravascular pressure. The signals at lower pressures were used as the pre-deformation data and the signals at higher pressure were used as the post-deformation data. Displacement distribution was constructed using the time-domain cross-correlation method, and then strain images. By comparison of elastograms under different pressures, we obtained the optimal pressure step. Furthermore, on the basis of the obtained optimize pressure step, the simulation results showed that this method could effectively distinguish characteristics between different component plaques, and could guide the later experiments and clinical applications.
Angiography ; Arteries ; diagnostic imaging ; pathology ; Elasticity Imaging Techniques ; Finite Element Analysis ; Humans ; Plaque, Atherosclerotic ; diagnostic imaging ; Pressure

Objective To discuss high dose methylprednisolone therapy in infantile spasm.Methods Sixty-six children with infantile spasm of the Third Affiliated Hospital of Zhengzhou University from Nov 2002 to Nov 2012,adopted intravenous methylprednisolone with 20 mg/(kg· d) for 3 to 5 days continuously,then changed to oral prednisone with 1 ～ 2 mg/(kg.d),4 ～ 8 weeks after drug withdrawal.The total course of 8 ～ 12 weeks of clinical curative effect was retrospectively studied.Results (1) Of 66 cases,51 cases were effective,total effective rate was 77.2％ ;28 cases achieved complete response,complete response rate was 42.4％.(2) The onset age had no influence on curative effect (P ＞ 0.05).(3) The beginning ages of the patients to use methylprednisolone therapy had no effect on curative effect (P ＞0.05).(4) Course of curative effect:23 cases within 2 months,the effective rate was 91.3％,43 cases more than 2 months,the effective rate was 69.7％.Difference of effective rate between the two groups had statistical significance (x2 =3.958,P ＜ 0.05).(5) Etiology of curative effect:50 cases of symptomatic,the effective rate was 78.0％,16 cases of cryptogenic,the effective rate was 75.0％ ;compared two groups,the effective rates had no statistical significance(x2 =0.008 7,P ＞ 0.05).(6) Long-term follow-up of 41 cases,14 cases had complete remission (34.2％),29 cases was effective(70.7％),3 cases had a recurrence (10.3％).Conclusion Application of methylprednisolone in the treatment for infantile spasm is simple,the recent control is effective,and it has a less adverse effect.The curative effect is related to the course,the shorter the duration,the better curative effect;and the long-term effect is good,the recurrence rate is low,the method can be recommended in clinical application.

Objective: To investigate the changes of gallbadder motive function in diabetics. Method: The size of gnllbadder,recovering rate,echo and half-empty time after fat food were compared and statistically analyzed between 22 healthy individuals and 20 diabetics with ultrssonograph. Results:The gallbadder recovering rate was similar between the healthy individuals and diabetics (P>0.05), but the rate of cholecystitis (30%) and choletethiasis (35%) of diabetics were higher than those in healthy individuals, the gallbadder half-empty time after fat food was obviously slower in diabetics (46.1+12.9 min)than those healthy individuals (27+4.4 mmin). Conclusions: The diabetics had obvious gallbadder motive funciion obstruction and higher rates of chronic cholecystitis and choletethiasis with ultrasonograph observations.

Objective:To construct the yeast expressive vector of rmFⅦ, in which mFⅦ was mutated to inhibit coagulation without affecting the affinity for TF, and express it in Pichia pastoris. Methods:The full length cDNA encoding mFⅦ was amplified from a mouse liver by RT-PCR method, site-direct mutated and restriction enzyme digested as design. Cloning into pPIC9K, electroporation of Gs115, in vivo screen of multiple inserts by G418 resistance, BMGY/BMMY are used for induction and expression of rmFⅦ in pichia pastoris. These proteins were also screened for functional activity. Results: Three different rmFⅦ-pPIC9K yeast expression vectors and it's aim protein were obtained,two kinds of proteins were found to be functional active as design. Conclusion:rmFⅦ protein can be expressed in pichia pastoris and it might facilitate the development of tumor-target molecule, and novel anti-agiogenesis drug study.

Objective To summarize the experience on clinical diagnosis and treatment for cervical neurilemmoma. Methods The clinical data of 77 cases of cervical neurilemmoma from 1976 to 2005 were retrospectively analyzed. Results The diagnosis was dependent on the anamnesis, clinical presentations, ultrasonography, CT and cytology of fine needle aspiration. Correct preoperative diagnosis was abtained in 51 cases (66. 2% ) , and the misdiagnosis rate was 33. 8% (26/77). All patients underwent surgical resection. The postoperative diagnosis was benign neurilemmoma by pathological examinations. The postoperative complications included recurrent laryngeal nerve injuries (6 cases) , Horner syndrome (4 cases) , tongue deviation (3 cases), neck pain or numbness (2 cases) and reffered pain in limb (1 case). Sixteen patients were followed up, and these symptomes disappeared after 3-11 months. Nerve dysfunction remained in 2 out of 3 patients in whom the vagus was wrongly amputated during the operation. Intraoperative inadvertent sympathetic nerve amputation caused permanent nerve dysfunction. Conclusion B-mode ultrasonography, CT and fine needle aspiration cytology are useful for the diagnosis of cervical neurilemmoma. Surgical resection is most effective among all available therapies.