Objective:To study the changes of metabolites in the acute cerebral infarction by 1HMRS and to identify the pre-sent time window and range of ischemic penumbra.Methods:Forty-four patients with hyperacute and acute cerebral infarctions were divided into five groups according to the time of attack.The normal side was taken as control.Routine MRI,DWI and PRESS multiple voxel acquisition were performed in all cases.The metabolites of NAA,Cr,Lac and the ratio of NAA/Cr and Lac/Cr were analyzed.Statistical analysis was performed by SPSS 13.0 software package,t-test and ANOVA analysis were used to detect the significance within each group and among different groups.Results:(1)Compared with counterpart,the decrease of NAA/Cr and the increase of Lac/Cr in cehtral region and posterior marginal region were significant inCompared with counterpart,the decrease of NAA and the increase of Lac in the acute lesions were significant(P0.05).But the significant differences were shown over time(P

0.05) in GCF. Conclusion:, The change PGE 2 and ALP in GCF of periodontitis tooth was similar to that of normal tooth during orthodontic therapy.

Objective To explore the effects of balloon dilatation on esophageal motility in patients with achalasia. Methods Forty eight patients were diagnosed as having achalasia by clinical features, barium radiography, endoscopy and esophageal manometry (PC polygraf HR, Medtronic). The following parameters were evaluated: the symptom score, the maximal width of the esophagus (MWE) on barium radiography, lower esophageal sphincter pressure (LESP), lower esophageal sphincter relaxation rate (LESRR) and the contraction amplitude of esophageal body before and after dilatation at 4 weeks and 12～24 weeks. Results (1) Parameters of symptom score and the maximal esophagus width were significantly decreased ( P

Calcium calculi account for about 80% of urolithiasis with high incidence and recurrence rate. Recurrent urolithiasis increases the risk of hypertension and chronic kidney disease. Comprehensive metabolic evaluation is of paramount importance for the prevention of calcium calculi. With deepening of the study on the pathogenesis of calculi, we find crystallization inhibitors, inflammation and oxidative stress molecules play an important role in the formation of calculi, and susceptibility gene sites of urinary calculi are identified in succession. These may be used as novel markers for the prevention and evaluation of urinary calculi. Models that predict the risk of kidney stone recurrence can help warn people at high risk.

Objective To study the expression and the role of interleukin (IL)-23/IL-17 axis in colonic tissue of trinitrobenzene sulphonic acid (TNBS) induced eolitic mice.Methods Mice were divided into four groups:control (n=24),TNBS (n= 24),TNBS 48 hours + mlL-17 antibodies (n=24),TNBS 48 hours + normal rat blood-serum (n= 24).TNBS-induced colitis model was constructed.The mice in control group and TNBS colitis group were sacrificed at 24 hours,48 hours,7th day,respectively.In TNBS 48 hours + mlL-17 antibodies group and TNBS 48 hours + normal rat blood-serum group,a single injection with the polyclonal mlL-17 antibodies or serum were given intraperitoneally at two hours before enema with TNBS,respectively,and the mice were killed at 48 hours after enema with TNBS.The histological score of colon and myeloperoxidase (MPO) activity of colonic tissue were evaluated in each group.IL-23p19 and IL-17 concentrations in colonic tissue were measured by enzyme-linked immunosorbent assay (ELISA).Expression of nuclear factor (NF)-κBp65in colonic tissue was detected by immunohistochemistry method.Expression of IL-23p19,IL-17 and IL-12p35 mRNA in colonic tissue were detected by real-time fluorescent quantitative reverse transcriptase polymerase chain reaction (RT-PCR) with SYBR Green I.Results The protein levels of IL-23p19 in colonic tissue in TNBS colitis groups at 24 hours,48 hours and 7 days were (15.53±3.32),(31.16±4.98) and (14.03±3.56) ng/mg,respectively,and their mRNA level were (4.09±0.34),(3.39±0.46) and (6.54±1.82),respectively.The protein levels of IL-17 were (0.35±0.06),(0.38±0.08),and (0.26±0.05) ng/mg,respectively,and their mRNA level were (4.21±2.61),(2.65±0.91) and (5.63±1.43),respectively.The expression levels of IL-23p19 and IL-17 in colitis model were significantly higher than those in control group and the peak was at 48 hours.Moreover,expression of IL-23p19 and IL-17 and their mRNA were positively correlated to their mRNA levels.In TNBS 48 hours + mIL-17 antibodies group,the expression levels of NF-κBp65,the microscopic scores and MPO (1.86 % ± 0.36 %,0.63 ± 0.52,0.40 ± 0.03 U/g,respectively) were significantly lower than those in TNBS 48 hours group (4.35% ±0.37%,5.13±0.64,2.29±0.40 U/g tissue,respectively).Neutralization of IL-17 was significantly protected against TNBS-induced colonic inflammation and MPO and expression of NF-κB p65.The results indicated that neutralization of IL-17 significantly reduced colonic inflammation and suppressed NF-κBp65 activation.This protection occurred in the presence of equivalent induction of local IL-23 p19 and high levels of IL-12p35 in the polyclonal raiL-17 antibodies-treated mice.Conclusions IL-23/IL-17 axis plays a critical role at the early acute phase of TNBS-induced inflammation.IL-17 may represent a new target for therapeutic intervention for inflammatory bowel disease.

Objective; To explore the possible effect of hyperthermia combined with Prog on a human tongue cancer cell line Tca8113 and drug-resistance cell line Tca8113/BLM in vitro. Methods;The effect of hyperthermia combined with Prog on Tca8113 and Tca8113/ BLM cells were determined by MTT. The concentration of ADM, the expression of P-gp and MRP were detected by flow cytometry (FCM). Results;Compared with Prog or hyperthermia, the hyperthermia at 41 X. for 1 h combined with Prog showed obvious inhibitory effect in Tca8113 and Tca8113/BLM cells(P<0.01). The concentration of ADM in Tca8113 and Tca8113/BLM cells increased obvi-ously(P<0.01). Expression levels of P-gp and MRP in Tca8113 and Tca8113/BLM cells decreased significantly. Conclusion:The hyperthermia combined with Prog can increase the intracellular concentration of ADM in Tca8113 and Tca8113 /BLM cells, which reverse the drug-resistance of Tca8113/BLM cells to BLM and down-regulate expressions of P-gp and MRP.

Objective To investigate the effect of antihypertensive therapy on brachial-ankle pulse wave velocity (baPWV) in patients with essential hypertension (EH). Methods The 150 EH patients (EH group)receiving antihypertensive therapy with valsartan 80 mg/d, and 135 healthy controls (control group) were enrolled in this study. Automatic pulse wave velocity (PWV)measurement system was employed to examine baPWV, and the investigation about cardiac risk factors, physical and laboratory examination was performed. The baPWV was used as an index to show artery stiffness.Results The baPWV was significantly higher in EH group than in control group [(2105.8±378.4) cm/svs. (1371.5±176.5) cm/s, t=4.05, P＜0.001]. The detection rate of atherosclerosis was 82.0% and 21.8% in EH and control group respectively. In EH group, there were positive relationships between age and baPWV (r= 0.51, P＜0. 001), SBP and baPWV (r=0.53, P＜0.001), pulse pressure (PP) and baPWV (r=0.43, P＜0. 05), PP index (PPI) and baPWV (r=0.51, P＜0.05), blood glucose and baPWV (r=0.39, P＜0.01). The baPWV decreased significantly from (2105.8±378.4) cm/s to (1704.2±332.0) cm/s (t=3.85, P＜0. 05) in EH group. The baPWV was significantly lower in the subgroup with a target BP than without a target BP in EH patients [(1588.8±278.7) vs. (1857.7±324.9) cm/s, t=3.67, P＜0.001].Conclusions The age and SBP are primary risk factors for baPWV in EH patients. The antihypertensive therapy can relieve baPWV with a target blood pressure.

Objective To construct recombinant lentivirus silence vector aiming at rictor gene in mTORC2 specific protein, and to investigate its regulation on mTORC2/SGK1 signal pathway and the effect on pulmonary alveolar epithelial sodium ion chan-nel,as well as the role in acute respiratory distress syndrome(ARDS)and acute lung injury.Methods The interfering vector plas-mid and empty vector plasmid of target gene rictor were constructed,which and the lentivirus packaging system were co-transfected to 293T cells.The viral supernatant was collected,centrifuged,concentrated and purified for obtaining recombinant lentivirus.The virus titer was detected and the virus was infected to A549 cells.Stable cell lines were screened.RT-PCR was used to confirm the silencing situation of target gene rictor.The expression situation of various signal indexes in this pathway was detected by PCR and Western blot.Results The recombinant lentivirus of silence gene rictor was successfully constructed and transfected to A549 cell for obtaining stable cell lines.Compared with blank and control groups,the mRNA levels of rictor,downstream SGK1 andα-,β-andγ-ENaC in the shRNA-rictor group were significantly decreased (P <0.05 ).Meanwhile,the protein levels of rictor,downstream SGK1,P-SGK andα-,β-andγ-ENaC in the shRNA-rictor group were significantly decreased compared with the other two groups(P<0.05).Conclusion Silence rictor gene has the obvious regulation effect on mTORC2/SGK1 signal pathway,meanwhile affects the expression of pulmonary alveolar epithelial cellular α-,β-and γ-ENaC at gene and protein level.It is speculated that mTORC2/SGK1 may be an important signal pathway for regulating the clearance capacity of pulmonary alveolar epithelial cells on pulmonary alveolar fluid and simultaneously affecting the pulmonary edema formation.

Objective To investigate the clinical application of Fibroscan to noninvasive detection of liver fibrosis in asymp‐tomatic carriers(ASCs)with chronic hepatitis B virus(HBV).Methods Clinical data of 195 chronic HBV ASCs were retrospec‐tively analyzed ,including liver function ,HBV DNA quantitation ,liver stiffness(LS) ,color Doppler ultrasound results of the liver and spleen and histopathological findings of the liver.LS was evaluated by transient elastography(Fibroscan).Liver biopsy was performed in 80 carriers for histological examination.Results The LS value was(6.22 ± 2.50)kPa in 195 cases.There was no significant difference in the LS value between HBV DNA <500 copies/mL and HBV DNA≥500 copies/mL groups.The LS value in patients with HBV carrying duration>15 years was significantly higher than that in patients with HBV carrying dura‐tion≤5 years(P<0.01).It was (6.72 ± 2.33) kPa in patients(n=49)with liver tissue inflammation and necrosis

0.05). But there was more BMP in the treated group of periodontitis than the other groups(P