AIM: To analyse monosaccharides of gynostema polysaccharide from Gynostemma pentaphyllum gathered from Pingli County,Shanxi Province and study the protecting effect of polysaccharide on plasmid DNA damage. METHODS: Gynostema polysaccharide was extracted with hot distilled water.After dialysis and deproteinization,polysaccharide in trifluoroacetic acid solution was hydrolyzed by 1-phenyl-3-methyl-5-pyrazolone,and then determined by HPLC.Tolerance of gynostema polysaccharide to the UV-photolysis of H_2O_2 was used to investigate the protecting effect. RESULTS: Polysaccharide consisted of mannose(Man),rhamnose(Rha),glucuronic acid(GlcUA),galacturonic acid(GalUA),glucose(Glc),galactose(Gal),xylose(Xyl) and arabonose(Ara).And it had the effect on protecting plasmid DNA from damage,showing a concentration dependent velationship. CONCLUSION: The method is simple and sensitive,the result is precise and believable.It provides scientific data for the use of Gynostemma pentaphyllum.

Objective To optimize the formulations of venlafaxine hydrochloride ( VH ) emulsions by using central composite design-response surface methodology. Methods The effect of amounts of Arlacel P135, VH, PEG-400, and NaCl on the emulsion viscosity, centrifugation breakage, and mean diameter was systemically investigated, respectively. The desirable formulation that combining these three response variables was constructed. Linear equations and a second-order polynomial equation were fitted to the data, and the outcome equation was used to predict the responses in the optimal region. Results There was a quantitative relationship between 4 factors and 3 evaluation indexes and evaluation the “desirability” . The optimal formulation of the VH emulsion were as follows:taking 0. 48 g of Arlacel P135, 0. 40 g of VH, 0. 26 g of PEG-400, and 0. 025 g of NaCl. The experimental values of the response variables were highly closed to the predict values. Conclusion The model presents good prediction and can be used to optimize the preparation of VH emulsion, which obtaining stable W/O emulsion.

Objective To evaluate the immediate effect of percutaneous ventricular restoration (PVR) using the PARACHUTE system in ischemic cardiomyopathy patients with apical aneurysm.Methods The study included 25 patients who received PARACHUTE partitioning device (PVD) implantation in the Xiamen Cardiovascular Hospital between January 2015 to December 2016.Invasive left ventricular hemodynamic assessments as well as cardiac output and cardiac output index were analyzed.Results Twenty-five patients [mean age (65.4±11.9) years] suffered from left ventricular aneurysm and heart failure patients after anterior myocardial infarction were enrolled.Ventricular partitioning device implantation was successful in 24/25 (96.0%) patients.PVR was failed in 1 patient due to unable to land the PVD in a satisfactory location.After implantation, a significant increase in cardiac output [(3.83±0.72) L/min vs.(4.85±0.93) L/min, P<0.01] and cardiac index [(2.32±0.74) L/(min·m2) vs.(2.90±0.82) L/(min·m2), P<0.01] was found.Conclusions Our preliminary experience on percutaneous ventricular restoration using PARACHUTE system demonstrates its feasibility and safety with increase in cardiac output and cardiac index immediately following the device implantation.

Objective To investigate the roles of cystatin C (CysC) and serum creatinine (Scr) in acute renal injury of patients with shock. Method A total of 71 patients with shock, 42 male and 29 female, were enrolled from February 2006 to June 2007. Patients with kidney disease or renal insufficiency were excluded. All of patients were assigned to 4 groups as per the duration of shock. The blood samples were taken from patients for measurements of CysC and Scr during the periods of 1 hr,2 hr,and 4 hr of shock and 72 hr and 7 days after correction of shock. The corrected GFR (cGFR) and decreased GFR (dGFR) were calculated. The levels of Scr and dGFR could be used to classify the acute renal injury into stages according to the Acute Kidney Injury Diagnosis Criteria. The positive detection rates of different methods were compared. The levels of CysC, Scr and cGFR were statistically analyzed. Data were studied by using Pearson's correlation analysis, Results The elevation of CysC appeared sooner than that of Scr in all shock patients. Contrarily, the high level of CysC lowered to normal level much slower than that of SCR after correction of shock. The CysC increased 1 hour after shock. The GFR was negatively correlated with CysC and Scr, especially in the early stage of shock. Conclusions The renal dysfunction appears in the early stage of shock. The CysC assayed is more sensitive in the stage 1 of renal injury than Scr.

Objective To observe the effects of drainage with vacuum and closure (VAC) on acute wounds, and explore the mechanism of drainage with VAC in promoting wound healing.Methods Twenty-four acute wounds were inflicted on the backs of 12 New Zealand white rabbits (each rabbit two wounds), and the rabbits were divided into a drainage with VAC group and a control group randomly. The drainage with VAC group was treated with drainage with VAC. The control group was treated with wet saline gauze. The wounds were observed 3 and 7 days after treatment. Patho-morphological changes in tissues from the compressed area were observed by HE staining. The expression level of Cx 43 mRNA was detected using a RT-PCR.Results At the 3rd and 7th day after treatment, the wounds of the drainage with VAC group were clean, fresh and had less edema compared with those of the control group. Pathomorphological tissue changes were more obvious in the drainage with VAC group. The expression of Cx 43 mRNA in the drainage with VAC group had declined significantly compared with the control group.Conclusion Drainage with VAC can promote inflammatory cell infiltration, down-regulate the expression of Cx 43 mRNA, and promote wound healing.

According to current situation of the undergraduates'scientific research,proposal of establishing the systematic research capacity training program was given,and this program's effects on undergraduates at our school were analyzed.

OBJECTIVE:To study the change of particles of Chinese medicinal injection added to different kinds of infu-sions fluid before and after filtration.METHODS:Particle analysator was adopted to measure the particles of Xueshuantong injection,Yinzhihuang injection,Yuxingcao injection before and after filtration and30minutes after being mixed with0.9%Sodium Chloride injection,5%glucose injection,and10%glucose injection respectively.RESULTS:The number of particles in all kinds of unfiltered mixture increased significantly while those of filtered ones remarkably decreased.CONCLUSION:It is recommended that when intravenous drip of Chinese medicinal injection in the clinic was used,particles addition should be considered.

AIM: To explore the effects of fluctuant high blood glucose and stable high blood glucose on apoptosis and the expression of Bax and Bcl-2 in glomerular endothelial cells and renal tubular epithelial cells in diabetic rats. METHODS: 24 SD rats were divided into 3 groups: control group, stable high blood glucose group and fluctuant high blood glucose group. Diabetic rats were induced by intraperitoneal injection of STZ, and the fluctuant high blood glucose animal model was induced by intraperitoneal injection of aspart and glucose at different time points every day. Apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling (TUNEL), and immunohistochemistry was used to detect apoptosis associated gene bax and bcl-2 expression in kidney. RESULTS: After 4 experimental weeks, a significant increase in cell apoptosis, up-regulation of Bax protein expression in kidney tubular epithelial cell and down-regulation of Bcl-2 in glomerular endothelial cell in fluctuant high blood glucose rats were observed compared with stable high blood glucose rats.CONCLUSION: Fluctuant high blood glucose induces more apoptosis in renal tubular epithelial cells than that in stable high blood glucose diabetic rats.

OBJECTIVE: To investigate the uptake of self-assembled sodium alginate(SA) nanoparticles labeled by FITC(sSAN-FITC) in Caco-2 cells and the influencing factors.METHODS: Fluorescence microscope was utilized to exam the uptake of sSAN-FITC in Caco-2 cells.Multifunction continuous spectrum enzyme-linked immunosorbent assay system was used for the detection of the fluorescence intensity of FITC in the cells and quantitative assay of the effect of sSAN concentration,its action time and pH on the uptake of sSAN-FITC in Caco-2 cells,with blank group as control.RESULTS: Pictures of Caco-2 cells taken by fluorescence microscope showed uptake of sSAN-FITC by Caco-2 cells.As compared with blank control group,among the 3 factors,the fluorescence intensity increased with the increase of the sSAN concentration and the prolonging of the action time(P

Objective To prepare thermosensitive in situ gel of ibuprofen ( IBU) inclusion complex with poloxamer and evaluate its release behavior in vitro and in vivo. Methods The IBU inclusion complexes were prepared by lyopyilization. The poloxamer 407 and 188 were added as a base for the preparation of gel. The release of inclusion complex gel was evaluated by membraneless models. The pharmacokinetics was evaluated after intramuscular injecting IBU solution or IBU inclusion complex gel to New Zealand white rabbits. The drug concentrations in the plasma were measured by HPLC. Results The loading amount of IBU was 10. 24% . The corrosion of gel and the release of IBU correspond to zero-order kinetics. Compared with IBU solution,the tmax and t1/2 were prolonged and Cmax was degraded while AUC was enhanced obviously. Conclusion The IBU inclusion complex gel is used as a good injection with sustained-release which can improve the analgesia and an- ti-inflammatory effect of ibuprofen. And our study builds up the foundation for the use of water-insoluble drug in thermosensitive in situ gel.