ObjectiveThe aim of this study was to evaluate the measurement of plasma D-dimer level in the diagnosis of acute and chronic deep venous thrombosis(DVT) of the lower limbs. Methods Gold colloids immunofiltration assay(GIA) was used to detect D-dimer in the plasma in 121 patients with DVT of the lower limbs confirmed by continuous wave Dopper ultrasound and B-mode ultrasound (normal value

Expression conditions of induction strategies for the cytoplasmic inclusion bodies (IBs) production of liver targeted interferon IFN-CSP by recombinant Escherichia coli (E. coli) BL21 (DE3) were optimized in shake-flask cultures in this study. The factors of the optimized protocol included in the present study were pH, inducer IPTG (isopropyl beta-D-thiogalactoside) concentration, culture growth temperature, incubation time and induction point. The effects of those factors were investigated by 'single variable at a time' method, aimed to analyze characterization of the recombinant strain. Orthogonal experimental design was further used to optimize the above critical factors for IFN-CSP production. According to the expression optimization result, it was confirmed that the main influence factors were cell density and induction temperature. The IFN-CSP gene expression optimized conditions were: pH value of the culture medium was 6.0, culture temperature 37 degrees C, adding IPTG to final concentration 0.4 mmol/L when the recombinant strain growth density OD600 achieved 0.8 and induction time 4 h. At this point, the IBs represented 74.3% of the total cellular protein. Compared with the non-optimized condition, IFN-CSP production obtained in optimized induction strategies were increased by approx. 1.2-fold. The optimized induction strategy yielded 688.8 mg/L of IFN-CSP, providing experimental data to study the biology activity and productive technology of IFN-CSP.
Biotechnology ; methods ; Cell Culture Techniques ; methods ; Culture Media ; chemistry ; Escherichia coli ; metabolism ; Gene Expression ; Interferons ; biosynthesis ; Liver ; Temperature

Objective To analyse clinical features of dead children in pediatric intensive care unit(PICU) of Children's Hospital of Chongqing Medical University from 2005 to 2014.Methods Clinical data of 917 dead cases in PICU from January 2005 to December 2014 in this hospital were collected,then distribution characteristics of age,length of hospital stay,time of dead and transfer department were analysed.The death cause analysis was conducted as well.Results According to systematic classification of disease,the top 10 leading causes of death for 917 dead cases in PICU from 2005 to 2014 in this hospital were congenital deformity,infectious disease,respiratory disease,injury and poisoning,digestive system disease,tumor,symptoms,signs and abnormal clinical and laboratory findings not elsewhere classified,circulation system disease,nervous system disease,blood system disease.Compared with 2005-2014,the ratio of dead cases due to infectious diseases to the total cases was declined,while that due to non-infectious diseases was increased,there was statistically significant difference (x2 =26.29,P =0.00).Whereas,the ranks of septicopyemia and hand-foot-mouth disease in the rank order of death causes both were increased.Condusion Congenital deformity is the first cause of death in PICU of this hospital.The key to cutting children's mortality is to reduce newborn with congenital deformity.

Baicalein-nicotinamide(BE-NCT)co-crystal was chosen as model drug to investigate the thermody-namic characteristics.Solubilities of BE in NCT solutions in ethyl acetate at different temperatures were deter-mined in order to explain the complexation behavior of BE-NCT co-crystal.Thermodynamic parameters of co-crys-tal formation progress were calculated.Ternary phase diagrams (TPDs)of the BE-NCT-ethyl acetate systems at various temperatures were established.The non-linear fitting equation according to 1 ∶1 complexation mechanism of BE-NCT co-crystal demonstrated a good correlation between calculated and experimental data (R2 >0.98). Co-crystal formation is a spontaneous process(ΔG°<0).Increase in temperature resulted in the increase of Ksp;decrease of K11 and a narrowed co-crystal zone.The degree of spontaneous reaction also decreased with increased temperature.The spontaneous reaction no longer carried out if the temperature reached T* =315 K sinceΔG°=0(ΔH°=-6.314 ×10 -2 kJ/mol;ΔS°=-0.200 5 J/mol.K).A drop in temperature favors the complexation between BE and NCT in ethyl acetate.Since NCT has higher solubility than BE in ethyl acetate;the TPDs of co-crystal was asymmetric.The DSC diagrams of products prepared via three presupposed methods confirmed that the BE-NCT co-crystal could be generated in solutions of nonstoichiometric compositions.

Objective: By the bibliometrical analysis and evaluation of acupuncture theses on auricular acupoint sticking from 2005 to 2014, the analysis was processed from multiple aspects including the types and numbers of diseases and effective rates of various diseases, in order to objectively reflect the general situation of clinical application of ear point embedding method in the recent years. Methods: By the bibliometrical analysis, the literature on auricular acupoint sticking in the recent ten years was counted up, analyzed and categorized. Results and Conclusion: Auricular acupoint sticking is used clinically for diseases of 16 systems, including 130 diseases. 74 diseases were singularly treated with auricular acupoint sticking, including the advantageous disease category like insomnia, constipation and obesity, and secondary advantageous disease category like dysmenorrhea, myopia, allergic rhinitis, post-operative pain and acne vulgaris.

[Objective] To investigate the occurrence rate, manifestations and influencing factors of emotional disorder in patients after acute stroke. [Methods] Emotional disorder in 107 cases of acute stroke was assessed by 17-item Hamilton Depression Scales (HAMD), 14-item Hamilton Anxiety Scales (KAMA), Mini-Mental State Examination (MMSE) and Barthel index (BI), and the relationship between emotional disorder and influencing factors were also analyzed. [Results] The occurrence rate of emotional disorder after acute stroke was 41.12% , in which depression was 18.69% , anxiety 9.35% and concurrence of depression and anxiety 13.08% . Emotional disorder usually occurred in the dominant hemisphere of young patients with lower BI after repeated attacks of stroke; its manifestations relieved with the cure of primary diseases. Its dominant syndrome pattern was classified as stagnation of liver-Qi. [ Conclusion ] Emotional disorder, possibly being a stress reaction, is the common complications of acute stroke and usually classified as stagnation of liver-Qi; early effective rehabilitation is the best preventive method for emotional disorder acute stroke.

Objective To detect the expression of Cancer-Testis antigen NY-ESO-1 in human laryngeal squamous carcinoma (LSC) and to explore its significance in immunotherapeutic application. Methods The expressions of NY-ESO-1 protein in the LSC and in the pathologically positive lymph nodes were detected by PV-9000 Immunohistochemistry. Western blotting was also employed to measure the expressions of NY-ESO-1 in the tumor core region(TC), the tissues at the sites of 0.5cm, 1.0cm away from LSC periphery and the distant normal larynx tissues. Results NY-ESO-1 protein expression was positive in 30 out of 69 (43.48 %) cases of LSC. The expression level of NY-ESO-1 protein were found to significantly decrease by tums in TC and corresponding adjacent tissues (P ＜0.01). None of the nine normal larynx tissues expressed NY-ESO-1 protein.It did not display an obvious correlation between the expression of NY-ESO-1 with T staging, pathological grading and lymph node metastasis (P ＞0.05). Its positive expression was found in pathologically positive cervical lymph nodes, which were significantly lower than that in the primary site (P ＜0.05). Conclusion NY-ESO-1 protein express at high level in human laryngeal squamous carcinoma, and they may play a role in genesis and development of tumors, which suggests that NY-ESO-1 gene might be used as target antigens for immunotherapy of LSC and the further research is necessary.

Objective To study the role of Ⅲb isoform of human fibroblast growth factor receptor 1 (FGFR1-Ⅲb) in PANC-1 pancreatic cancer cells. Methods The plasmid of human full-length FGFR1-Ⅲb isoform，pSVK4/FGFR1-Ⅲb, was stable transfected into cultured PNAC-1 pancreatic cancer cell lines facilitated by lipofectamine. The function of FGFR1-Ⅲb in transfected pancreatic cancer cells were examined by MTT assay, soft agar assay, cell migration assay, single cell movement assay, In vivo tumorigenicity assay. Results The basal anchorage-dependent and -independent cell growth was significantly inhibited. Additionally, FGFR1-Ⅲb expression inhibited single cell movement and in vitro invasion as determined by time-lapse microscopy and boyden chamber assay as well as in vivo tumor formation and growth in nude mice. Microscopic analysis of the xenograft tumors revealed a reduced Ki-67 labelling, lower amount of tumor necrosis and higher grade of differentiation in FGFR1-Ⅲb expressing tumors. Conclusion We identified a functional human FGFR mRNA splice variant that inhibits the transforming potential of pancreatic cancer cells.

Objective To verify whether iron can accelerate the process of liver fibrosis in rats. Methods The rats were divided into control group, high fat diet group, high iron group, high fat diet and high iron group, high fat diet and de?iron group, each with 24 rats. The rats were allowed to freely take normal diet and high fat diet, while the high iron rats, high?fat diet plus high iron rats received intramuscular injection of 50 mg/kg iron dextran every other day;high?fat di?et plus de?iron group rats received tail intravenous injection of 30 mg/kg deferoxamine one month before death, 3 times/week. 8 rats were selected at 4th, 5th, 6th month of intervention, to detect serum hyaluronic Acid (HA), collagen type IV ( COL?IV) , laminin ( LN) , procollagen III ( PC III) , and observe pathological changes in the liver with Masson staining. Results At 5th month of intervention, serum HA level of the high?fat diet plus high iron group was significantly higher than those of high fat diet group and control group. At 6th month of intervention, serum COL?IV and LN levels of the high?fat diet plus high iron group were significantly higher than those of the high fat diet group. At 6th month, serum PC III level was 1. 63 time of those of the high fat diet group. At the 6th month, liver tissue of high fat diet plus high iron group ap?peared collagen deposition revealed by Masson staining, which was not the case in other groups. Conclusions Iron can accelerate high fat?induced liver fibrosis.

Objective To investigate the tissue stimulation of copper ions to the smooth muscle of murine terminal rectum.Methods In this study copper needle used for electrochemical therapeutic equipment was punctured into submucosal smooth muscle tissue of terminal rectum above the dentate line in 65 male rats.Rats were then divided into 5 groups (10 rats in each group) at random and sacrificed at 1, 3, 4, 6, 8 weeks after respectively, samples were sent for observation of macroscopic and microscopic tissue reaction.Results Rats had no abnormal histological change in the puncture points grossly. Undor microscope, mild edema was detected in the submucosal layer in 1 week group. Remarkable infiltration of inflammatory cells and lymphocytes subsided 3 weeks after, and disappeared five weeks after.Smooth muscle was normal microscopically in all groups.In contrast, platinum and steel needles caused infiltration of plasma cells and neutrophils, ulcers and small abscess formation in around puncture points.Conclusion Inflammatory reaction was induced after puncturing of copper needle into the tissues and the tissue reaction disappeared after 5 Ws.In contrast with platinum and steel needles, copper needle was non-traumatic to the smooth muscle tissue.