BACKGROUND:Spine, due to its complicated structure and special functions, is always the difficulty and emphasis in clinical practice and medical education. It is an interesting top how to apply modern software in clinical teaching. OBJECTIVE:To investigate the application of Spine Decide software in clinical teaching of spine surgery. METHODS:Teachers can actively guide students to learn the diagnosis of spine diseases and to design surgery program using Spine Decide software. Then the students wil participate in the surgical operation of the patients, which helps them better understand the diagnosis and treatment of spine surgery disease and the occurrence and development of spine diseases. RESULTS AND CONCLUSION:The students actively participated in the process of learning through Spine Decide software, which helps them learn systematical y, structural y the pathogenesis, diagnosis, treatment and prognosis of spine diseases in a short period. Application of Spine Decide into teaching activities has greatly improved the students’ abilities in self-learning and clinical analysis. Their enthusiasm to the learning and creativity has been greatly improved compared to traditional teaching methods;innovation and exploration have breakthrough improvement, final y achieving a good teaching effect.

Objective To study curative efficacy of aluminum phosphate gel combined with omeprazole in treatment of peptic ulcer and its effects on Gas, TGF-αlevels.Methods 80 patients of peptic ulcer who received therapy from April 2015 to April 2016 in our hospital were selected as research objects.According to random number table, those patients were divided into the observation group and the control group, 49 patients in each group.the control group was treated with omeprazole, while the observation group was treated with aluminum phosphate gel combined on the basis of control group.Then Transforming growth factor, adverse reaction and curative effect were compared.Results After treatment, the serum levels of Gas and TGF-αin both groups were improved (P<0.05); Two weeks after treatment,the level of GAS in the observation group were lower than those in the control group(P<0.05), TGF-αlevel was higher than that in control group(P<0.05); The total incidence of adverse reactions in the observation group was lower than that in the control group(P<0.05); The total effective rate in the observation group was higher than that in the control group(P<0.05). Conclusion Combined use of aluminum phosphate gel and omeprazole in the treatment of peptic ulcer can effectively improve the patient-related serum markers, improve the quality of ulcer healing, significant efficacy, high safety and low incidence of adverse reactions.

In this study, we aimed to investigate the influences of conditioned medium from human umbilical vein endothelial cells (HUVEC) on cancer stem cell phenotype of human hepatoma cells. HUVEC and human hepatoma cells (MHCC97H) were cultured, respectively, and then the MHCC97H cells were co-cultured with conditioned medium from HUVEC (EC-CM) with Transwell system. Anti-cancer drug sensitivity, colony-formation, migration/invasion ability, expression of cancer stem cell marker and sphere formation were performed to determine the cancer stem cell phenotype in MHCC97H cells. We found that MHCC97H cells co-cultured with EC-CM exhibited significantly higher colony-formation ability and lower sensitivity of anti-cancer drugs 5-FU and Cis. Transwell assay showed that treatment with EC-CM obviously increased migration and invasion of MHCC97H cells. Moreover, increased sphere forming capability and expression of CD133 in MHCC97H cells were observed after co-cultured with EC-CM. These results suggested that EC-CM could promote cancer stem cell phenotype of hepatoma cells.
Antineoplastic Agents ; pharmacology ; Carcinoma, Hepatocellular ; Cell Line, Tumor ; Coculture Techniques ; Culture Media, Conditioned ; Fluorouracil ; pharmacology ; Human Umbilical Vein Endothelial Cells ; chemistry ; Humans ; Liver Neoplasms ; Neoplastic Stem Cells ; cytology ; Phenotype

Objective To evaluate the effects of therapy with small volume of different fluids on renal blood flow in endotoxemia rats.Methods Thirty parthogen-free SD rats weighing 180-250 g were randomly divided into 5 groups (n = 6 each):group Ⅰ control; group Ⅱ LPS; group Ⅲ LPS + 7.5 % hypertonic saline (HS);group Ⅳ LPS + hydrozyethly starch (HES) 130/0.4 and groupⅤ LPS + hypertonic saline plus hydroxyethly starch (HS-HES) 40. The animals were anesthetized with intraperitoneal 3% pentobarbital 40 mg/kg. Left carotid artery was cannulated for BP and HR monitoring and fluid administration. In groupⅡ-Ⅴ LPS 1 mg/kg was administered via arterial cannula. In group Ⅲ, Ⅳ and V 4 ml/kg of 7.5% HS, HES 130/0.4 AND HS-HES 40 were administered via arterial cannula respectively at 30 min after LPS administration.In groupⅠ and Ⅱ normal saline 4 ml/kg was given insteadt. Renal blood flow was measured with Doppler ultrasound before LPS (T1 ,baseline), at 30 min after LPS (T2), 10, 30 and 60 min after fluid therapy (T3, T4, T5). The animals were then sacrificed and both kidneys were removed for microscopic examination with light microscope. Results Renal blood flow was significantly decreased and was significantly recovered to some extent by therapy with different fluids especially with HS-HES 40 in group Ⅴ. Conclusion Therapy with small volume of HS,HES or HS-HES could increase renal blood flow and inprove renal microcirculation especially HS-HES.

Objective To investigate the correlation of plasma brain natriuretic peptide (BNP) level with serum albumin, serum total bilirubin and thrombin time in patients with liver cirrhosis.Methods RandomLy selected from January 2014 to June 2016 to our hospital diagnosis and hospitalization of 200 cases of cirrhosis patients, according to the standard of Child-Pugh classification provided by Chinese Medical Hepatology Division in 2006, 48 cases were Child A group, 96 cases were Child B group and 56 cases were Child C group.The plasma BNP, serum albumin, serum total bilirubin, prothrombin time and QTc interval of electrocardiogram were analyzed in the clinical data of each group of patients and the correlation between plasma BNP and their correlation.Results The levels of plasma BNP in Child A, B and C groups were higher than those in B group and B group.The correlation between plasma BNP and Child's grade showed a positive correlation, and the results of each group were statistically different (P<0.05).The plasma BNP level was negatively correlated with ALB ( P<0.05 ) .The level of plasma BNP was positively correlated with ALB ( P <0.05 ) .The correlation between plasma BNP and PTIL was correlated with TBIL.The correlation between plasma BNP and TBIL was significantly correlated with TBIL ( P <0.05), The higher the plasma BNP, the regression analysis showed that plasma BNP and TBIL were positively correlated, the difference was statistically significant (P<0.05).The correlation between plasma BNP level and QTc was analyzed.The QTc interval of plasma BNP level was higher than that of the control group ( P<0.01 ) , and the difference was statistically significant ( P <0.01 ) .Conclusion The plasma BNP level in patients with liver function is closely related to ALB, TBIL, PT, QTc interval, and has the value of evaluating and predicting liver function.

Objective To investigate the effects of Lokomat robotic-assisted gait training combined with drop foot stimulator on gait function in patients with stroke. Methods Thirty-six stroke patients were randomly divided into control group (n=18) and observation group (n=18). Both groups received routine rehabilitation training. The control group accepted Lokomat robotic-assisted gait training, while the ob-servation group worn drop foot stimulator in addition. The training intensity was 30 minutes every day, five days per week for 6 weeks. Fugl-Meyer Assessment-Lower Limb (FMA-LL), Functional Ambulation Category (FAC) and footprint analysis were used to evaluate the motor ability of lower limbs, walking ability and gait before and after training. Results There was no significant difference in the scores of FMA-LL, FAC and gait parameters (walking speed, stride width, stride length difference) before training (t<0.765, Z=0, P>0.05). The scores of FMA-LL, FAC and walking speed improved, and the stride width and stride length difference decreased after training (t>2.190, Z>3.630, P<0.05). After training, the scores of FMA-LL, FAC, walking speed and stride length difference were better in the observation group than in the control group (t>2.030, Z=-2.560, P<0.05), however, there was no significant difference in stride width between two groups (t=0.570, P>0.05). Conclusion Lokomat robotic-assisted gait training combined with foot drop stimulator could improve the lower limb motor func-tion and gait ability in patients with stroke, and the effect might be better than using Lokomat robotic-assisted gait training only.

Aim To study the effects of resveratrol(Res)on the release of soluble adhesion molecules from human umbilical vein endothelial cells(HUVECs)induced by N-formyl-methionyl-leucyl-phenylal-anine(fMLP)and the adhesion between neutrophils and HUVECs.Methods The effects of Res on neutrophils adhesion to human umbilical endothelial cell(HUVECs)triggered by fMLP were examined.The soluble intercellular cell adhesive molecule-1(ICAM-1),the soluble vascular cell adhesive molecule-1(VCAM-1)and E-selectin release from fMLP(10 ?mol?L-1)stimulated HUVECs were determined by ELISA kits.The neutrophils isolated from human vein blood were loaded with Fluo-3,a fluorescent indicator,to detect intracellular free calcium concentration([Ca2+]i),and CLA was used as a chemiluminescent indicator to determine superoxide production in neutrophils.Results Res(1~50 ?mol?L-1)significantly inhibited neutrophil adhesion to fMLP-stimulated HUVECs and also obviously downregulated the levels of ICAM-1,VCAM-1 and E-selectin in supernatant of HUVECs culture stimulated by fMLP in the dose-dependent pattern.Res also suppressed fMLP-activated superoxide generation and[Ca2+]i increase in neutrophils.Conclusions Res involved in neutrophil adhesion to HUVECs intermediated by cell adhesive molecules expression trigged by[Ca2+]i and superoxide production in neutrophils,which means a lot to prevent inflammatory diseases.

[Objective]This study was designed to observe the effects of endotoxin(LPS)on the growth activity and gap junction(GJ)of NRK52E cells.[Methods]The NRK52E cells were divided into control group and LPS groups,and the NRK52E cells in LPS groups were treated with LPS 10 ng/mL,50 ng/mL,100 ng/mL,500 ng/mL,and 1 000 ng/mL for 24 h respectively.The NRK52E cells growth activity was measured through MTT method,and the function of gap junction of NRK52E cells was measured through the method of fluoroimmunoassay.The protein expression of connexin 43(Cx43)in control group,LPS 10 ng/mL group,and LPS 100 ng/mL group were also determined by Western blotting.[Results]①Compared with control group and LPS 10 ng/mL group,The NRK52E cells growth activity decreased significantly in LPS 50 ng/mL,100 ng/mL,500 ng/mL,and 1 000 ng/mL groups(P＜0.01).②Compared with control group,the function of GJ decreased significantly in LPS 100 ng/mL,500 ng/mL,and 1 000 ng/mL groups(P＜0.01).③There were negative correlations among the concentration of LPS and NRK52E cells growth activity and GJ function respectively(r=-0.941,-0.872,P＜0.01).④Compared with control group,the protein expression of Cx43 were decreased significantly in LPS 10 ng/mL and 100 ng/mL groups(P＜0.01).[Conclusions]LPS can inhibit the NRK52E cells growth activity in a dose-depend manner.GJ function is one of the mechanisms.

Implant surface modified coating can improve its osteoinductivity, about which simple calcium phosphate coating has been extensively studied. But it has slow osteointegration speed and poor antibacterial property, while other metal ions added, such as nano zinc ion, can compensate for these deficiencies. This paper describes the incorporation form, the effect on physical and chemical properties of the material and the antibacterial property of nano zinc, and summarizes the material's biological property given by calcium ion, zinc ion and inorganic phosphate (Pi), mainly focusing on the influence of these three inorganic ions on osteoblast proliferation, differentiation, protein synthesis and matrix mineralization in order to present the positive function of zinc doped calcium phosphate in the field of bone formation.
Biocompatible Materials ; Calcium ; Calcium Phosphates ; chemistry ; Cell Differentiation ; Cell Proliferation ; Humans ; Ions ; Metal Nanoparticles ; chemistry ; Osteoblasts ; cytology ; Osteogenesis ; Phosphates ; chemistry ; Zinc ; chemistry

Objective To compare biological properties of ehitosan composite artificial neural type Ⅰ collagen scaffold material cross-linked with ultraviolet rays (UV), genipin (GP) and glutaraldehyde (GTA) in aspects of uhrastrueture, porosity, swelling rate, degradation rate, crosslinking degree and cytotoxicity. Methods (1) According to different cross-linking methods, biomaterials were divided into three groups, ie, UV group, GP group and GTA group. (2)The mierostrueture of three groups was observed under scanning electron microscope (SEM) to measure pore size, porosity rate and pore-size distribution. (3)Swelling rate and in vitro degradation rate:the biomaterials were weighed (W_0) after crosslinking and then immersed in culture medium containing 10 ml aseptic phosphate buffer solution (PBS). The samples were drawn from the culture medium after 24 hours, wiped with filter paper to remove excess liquid and weighed (W_1). Swelling rate(%) = W_1-W_0/W_0×100%. The remaining sampies from each group were weighed (W_2) at 4, 8, 12 weeks with the same procedure. Degradation rate (%) = W_1-W_2/W_1×100%. (4)Determination of cross-linking index: 10 samples were prepared from each group, five samples from which were reacted with trinitro-benzen-sulfonic acid(TNBS)and sodium bicarbonate and then were hydrolyzed with hydrochloric acid. The absorbance of the diluted solution was measured at 346 nm. The other five samples were prepared by the same procedure, except for hydrochloric acid was added before addition of TNBS, when the absorbance was measured as control (A_(control)). The absorbance after crosslinking:A_(after)=ATNBS-A_(control). Another 10 samples without any crosslinking were detected with the same procedure to measure the absorbance before crosslinking (A_(before)). Crosslinkiag index = (A_(before)-A_(after))/A_(before)×100%. (5) Determination of cytotoxicity : two international standard experimental methods were adopted in the study according to experimental principle of GB/T 16886-ISO 10993 on medical apparatus. L929 fibroblasts of mouse were used for in vitro experimental study of cytotoxicity of modified scaffold. Results The biomaterials without any cross-linking were circular cylinder, with parallel arranged microscopic channel and uniform pore size of 30-120 μm. The pore size of UV group remained basically unchanged, while the pore size in GP group and GTA group was smaller than that in UV group. (2) The porosity rate in GP group and GTA group was higher than that in UV group, but there was no statistical difference between GP group and GTA group. The swelling rate of GP group was higher than that GTA group, which was higher than UV group. (3)The crosslinking index of GP group and GTA group were 55.3% and 82.5%. (4) No statistical difference was found in regard of in vitro degradation rate after GP group and GTA group were put in PBS for4, 8 and 12 weeks, respectively. But in vitro degradation rate in UV group was significantly higher than that in GP group and GTA group. (5) Cell culture in GTA group presented partial necrosis, while cells cultured in GP group and UV group grew well. Conclusion Collagen/chitosan scaffolds cross-linked with GP have sound biostability and good biocompatibility and hence are potential alternatives for nerve tissue engineering.