AIM: To confirm the existence of the endothelial progenitor cells in human cord blood and to study its differentiation and development process. METHODS: The mononuclear cells in human cord blood were isolated using lymphocyte separation solution. Then the mononuclear cells were cltured in MCDB131 containing 20% fetal bovine serum. The effects of 5 ?mol/L dexamethasone,the extract from bovine brain,insulin and hypoxanine on the proliferation and differentiation of the adherent cells were observed. The morphology of the adherent cells were examined twice daily by inverted phase contrast microscope. CD34 and CD14 expression were determined by FACS. Immunohistochemistry was used to confirm the expression of factor Ⅷ. RESULTS: The proliferative endothelial progenitor cells existed within the CD34 - adherent mononuclear cells of human cord blood. Dexamethasone and hypoxanine decreased the number of spindle-shaped cells and caudated cells. Bovine brain extract,insulin and FCS enhanced the number of spindle-shaped cells and caudated cells. CONCLUSION: The existence of endothelial progenitor cells within the CD34 - adherent monouclear cells of the human cord blood was observed and these cells were able to differentiate into endothelial-like cells in vitro.

Objective To observe the clinical efficacy of fire-needle acupuncture in treating myofascial pain syndrome (MPS). Method Seventy-two patients with MPS were randomized into a treatment group and a control group, 36 in each group. The treatment group was intervened by fire-needle acupuncture, while the control group was by ordinary acupuncture. The short-form McGill Pain Questionnaire (MPQ) was observed before and after the intervention, and the clinical efficacy was compared. Result The total effective rate and markedly-effective rate were respectively 94.4% and 77.8% in the treatment group versus 80.6% and 30.6%in the control group. There was a significant difference in comparing the markedly-effective rate between the two groups (P<0.01). The MPQ item scores [pain rating index (PRI), present pain intensity (PPI), and visual analogue scale (VAS)] were significantly changed after intervention in both groups (P<0.05). After intervention, the MPQ item scores of the treatment group were significantly different from that of the control group (P<0.05). Conclusion Fire-needle acupuncture is an effective method in treating MPS.

To investigate the short term anti HBV efficacy of foscarnet sodium, sixty seven patients with various types of chronic hepatitis B were randomly divided into two groups. The experimental group (47 cases) was assigned to receive foscarnet sodium 3 0g by intravenous infusion twice daily in addition to general liver protective medicine for 15 days. The control group (20 cases) was treated with regular liver protective medicine only. The quantity of HBV DNA was measured with equivalent competitive PCR combining with DNA hybridization quantitative detection technique before and after treatment (once a week). The HBV markers and liver functions were also tested before and after treatment. In antiviral therapy group, the patients with different types of hepatitis B had their liver functions improved. HBV DNA in 13 patients became negative by PCR. Two of HBeAg positive patients became sero converted. Foscarnet sodium can inhibit HBV efficiently and quickly. The replication of HBV DNA can be greatly suppressed in the first week but without significant change in the second week in some cases. Foscarnet can be one of the drugs of choice in a combined therapy or as the initial drug in a sequential therapeutic regime.

Objective To compare the current trcmment of intertrochanteric fracture fixation commonly used in the two systems:proximal femoral nail(PFN-A)and the dynamic hip screw(DHS)of clinical efficacy and evaluate the treatment of the two intertroehanteric fracture of the gifted bad.Methods The clinical use on closed reduction and traction,respectively PFN-A with DHS and the treatment of intertrochanteric fracture patients with 106 cases and 115 cases,compared with its ease of operation,and the effect of surgery,postoperative complications.Results The clinical material demonstrated that in after PFN-A treatment thighbone thick pmsperom bone fracture technique,technique,the complication is short in DHS.Conclusion PFN-A well-designed,with simple anti-rotation indeed,surgical trauma,less bleeding,fewer complications,etc.,is the treatment of intertrochanteric fracture fixation one of the ideal.

Objective To evaluate the accuracy of remifentanil target-controlled infusion (TCI) system in children.Methods Thirty ASA Ⅰ patients (aged 3-12 years and weighing 10-40 kg) scheduled for elective ear-nose-throat or urological surgery were randomly divided into two groups (n =15 each):2 ng/ml remifentanil group (group Ⅰ) and 4 ng/ml remifentanil group (group Ⅱ).Anesthesia was induced with intravenous injection of propofol 2 mg/kg and TCI of remifentanil.Remifentanil was administered with a specific TCI system incorporating the pharmacokinetic parameters of Minto.The target plasma concentration of remifentanil was set at 2 or 4 ng/ml.Tracheal intubation was facilitated with vecuronium 0.1 mg/kg after the children lost consciousness.The children were mechanically ventilated.Anesthesia was maintained with TCI of remifentanil,intravenous infusion of propofol and intermittent intravenous injection of boluses of vecuronium.The target plasma concentration of remifentanil remained unchanged and bispectraI index value was maintained at 45-65 or auditory evoked potentials index value ＜ 30 through adjusting the infusion rate of propofol.Arterial blood samples were taken at 5,10,20,30,40,50 and 60 minutes after TCI of remifentanil was started for determination of blood remifentanil concentrations by high performance liquid chromatography.Median prediction performance error (MDPE),median absolute performance error (MDAPE) and wobble of remifentanil TCI system were calculated.Results The measured concentrations of remifentanil were significantly higher than the target plasma concentrations jn both groups (P ＜ 0.05).The MDPE,MDAPE and wobble were 20.0％,30.0％ and 25.0％ respectively in group Ⅰ,and 17.5％,17.5％ and 12.5％ respectively in group Ⅱ.The MDAPE and wobble were significantly decreased in group Ⅱ compared with group Ⅰ (P ＜ 0.05).Conclusion When remifentanil is administered using a specific TCI system incorporating the pharmacokinetic parameters of Minto in children of 3-12 years old,the accuracy is not high.

Objective Quadratic regression universal rotary combination design was used to optimize the fluorescence labeling condition of lycium barbarum polysaccharide (LBP).Methods The fluorescence labeling condition of LBP presented, when the covalent coupling of LBP and tyramine was reacted with fluorescein isothiocyanate (FITC). Filter the best labeling condition via using quadratic regression universal rotary combination design experiment on the relationship of labeling efficiency among pH value of buffer solution, reaction time, temperature and the dose of tyramine.Results The regression equation was:Y=0.085 41 - 0.002 82X1 - 0.015 68X2 + 0.008 11X3 + 0.005 01X4 + 0.008 75X1X2 - 0.005 75X1X3 - 0.001 75X1X4 + 0.010 63X2X3 + 0.000 125X2X4 + 0.000 25X3X4 - 0.021 44X12 - 0.008 89X22 - 0.001 984X32 + 0.003 66 X42, and the variables fromX1 toX4 represented pH value, reaction time, temperature and dose of tyramine, respectively. The goodness of fitting of regression equation was statistically significant. The condition of labling LBP was optimized when the temperature was at 50℃, timing of labling at the fourth day and pH value was 8.5.Conclusion The condition of labling LBP was optimized with suitable temperature, pH value and extended timing.

Objective To evaluate the accuracy of remifentanil target-controlled infusion (TCI) system in children.Methods Thirty ASA Ⅰ patients, aged 3-12 yr, weighing 10-40 kg, scheduled for elective ear-nosethroat or urological surgery, were randomly divided into 2 groups with 15 patients in each group:2 ng/ml remifentanil group (group Ⅰ) and 4 ng/ml remifentanil group (group Ⅱ). Anesthesia was induced with iv injection of propofol 2 mg/kg and TCI of remifentanil. Remifentanil was administered with a specific TCI system incorporating the pharmacokinetic parameters of Minto.The target plasma concentrations of remifentanil were set at 2 or 4 ng/ml. Tracheal intubation was facilitated with vecuronium 0.1 mg/kg after the children lost consciousness. The children were mechanically ventilated.Anesthesia was maintained with TCI of remifentanil, iv infusion of propofol and intermittent iv boluses of vecuronium. The target plasma concentration of remifentanil remained unchanged and bispectral index value was maintained at 45-65 or auditory evoked potentials index value ＜ 30 by adusting the infusion rate of propofol.Arterial blood samples were taken at 5, 10, 20, 30, 40, 50 and 60 min after TCI remifentanil was stared for determination of blood remifentanil concentrations by high performance liquid chromatography. Median prediction performance error (MDPE),median absolute performance error (MDAPE) and wobble of remifentanil TCI system were calculated. Results The measured concentrations of remifentanil were significantly higher than the target plasma concentrations in both groups (P＜0.05). The MDPE, MDAPE and wobble were 20.0% , 30.0% and 25.0% respectively in group Ⅰ , and 17.5%, 17.5% and 12.5% respectively in group Ⅱ . TheMDAPE and wobble were significantly decreased in group Ⅱ compared with group Ⅰ(P＜0.05).Conclusion When remifentanil is administered using a specific TCI system incorporating the pharmacokinetic parameters of Minto in children of 3-12 years old, the accuracy is not high.

Objective:To construct an adenovirus-mediated mouse endostatin vector (Ad-mEndo) and to observe its inhibitory effect on the pulmonary metastasis of osteosarcoma in nude mice, so as to discuss the relationship between ES expression and the pulmonary metastasis of osteosarcoma. Methods: Recombinant adenovirus plasmid pDC315-mEndo was constructed and used to prepare recombinant Ad-mEndo. Osteosarcoma MG-63 cells were subcutaneously injected into the right fore limbs to establish nude mouse model of osteosarcoma; and the models were randomly divided into 3 groups: Ad-mEndo group, Ad-EGFP group and PBS group; animals receiving no transplantation served as blank control. The corresponding agents were injected (20 ?l per time) for a consecutive of 5 times on a weekly basis. The tumor volumes, histopathological characteristics were observed; ELISA was employed to examine the serum ES level. Animals were sacrificed 7 weeks later and the pulmonary metastasis was observed. Results: Sixteen days later,the tumor volume was (1.53?0.05)cm3 in Ad-EGFP group, (1.56?0.07)cm3 in the PBS group, and (0.91?0.03)cm3 in the Ad-mEndo group, with the tumor inhibitory rate being 40.7% in the last group. The serum ES level in the Ad-mEndo group was significantly higher than that of the other groups (P

Objective:To investigate the expression of long non-coding RNA MALAT1, interleukin 6(IL-6) and apoptosis induced factor(AIF) in peripheral venous blood of premature infants with bronchopulmonary dysplasia (BPD) and its clinical significance.Methods:Preterm infants admitted to the Department of Neonatology, Shanghai Children′s Hospital from January 2015 to December 2016 were enrolled.The selection criteria included gestational age (GA) ≥28 weeks and ≤32 weeks, and birth weight (BW) < 1 500 g. According to the diagnosis, they were divided into BPD group (20 cases) and control group (20 cases). The clinical data of the two groups of premature infants were collected and analyzed, and the levels of MALAT1, IL-6 and AIF in the blood of 40 premature infants were detected by real-time polymerase chain reaction (RT-PCR). T test was used to compare gestational age, birth weight, MALAT1, IL-6 and AIF between the two groups. Results:(1)There was no significant differences in sex ( χ2=1.76), gestational age ( t= 0.17) and birth weight ( t=1.25) of premature infants in BPD group, compared with the control group (all P >0.05). (2)Compared with the control group, the expression of MALAT1 in the peripheral blood of premature infants in BPD group were significantly increased (0.273 4±0.067 3 vs. 0.375 5±0.081 9, P<0.05). (3)Compared with the control group, the expression of IL-6 in the peripheral blood of premature infants in BPD group were obviously decreased (1.448 8±0.191 8 vs.4.444 6±0.165 7, P<0.05). (4)Compared with the control group, the expression of AIF in the peripheral blood of premature infants in BPD group were remarkably decreased(0.006 8±0.002 0 vs.0.004 5±0.001 9, P<0.05). Conclusions:MALAT1 and IL-6 levels of long non-coding RNA in BPD and non-BPD preterm infants are different, which may be related to the incidence of BPD.IL-6 may be a predictor of BPD, and MALAT1 may protect premature infants with BPD.

Objective: To optimize the extraction process of total flavonoids from Oxytropis falcata bunge.Methods: With the content of total flavonoids as the index,and based on the results of single factor tests, central composite design-response surface methodology was adopted to optimize the extraction technology with the solvent amount, ethanol concentration and extraction time as the factors.Results: The optimal extraction conditions were as follows: extracted twice with 20-fold amount of 66% ethanol, and 84 minute per time.Under the above conditions, the extraction rate of total flavonoids was up to 23.21 mg·g-1.Conclusion: The central composite design-response surface methodology is convenient and highly predictive for the extraction optimization of total flavonoids from oxytropis falcata bunge.