Objective To prospectively compare the efficacy of omeprazole and esomeprazole on H. pylori eradication related to cytochrome P450 (CYP) 2C19 polymorphism in Chinese Han poputafion. Methods A total of 240 patients with peptic ulcer were randomly assigned to receive either EAC (amoxicillin, clarithromyein and esomeprazole) treatment or OAC (amoxicillin, clarithromycin and orneprazole) treatment for one week with 120 each. Then, the patients were sustained treated with esomeprazol or omeprazole for 3 weeks. The endoscopic evaluation was performed 2 weeks after treatment. At the end of the treatment, a carbon-13 (13C) urea breath test (13C-UBT) was performed to determine H. pylori status. Polymerase chain reaction and restriction fragment length polymorphism were used to detect CYP2C19 genotypes including extensive metabolizer (EM), poor metabolizer (PM), homozygous (homEM) and hetEM. Results Two hundred and twenty five of 240 patients completed the study. H. pylori eradication was 79.2% with OAC regimen and 88.3% with EAC regimen by intention to-treat (ITT) analyses without difference (P>0.05). Whereas H. pylori eradication was 87.20/00 with OAC regimen and 91.4% with EAC regimen by per-protocol (PP) analyses without difference (P>0. 05). However, both ITT and PP analysis showed that there was significant difference in H. pylori eradication between EAC regimen (91.9% and 97.1%) and OAC regimen (71.8% and 77.8%) in patients with homEM genotype (P= 0.037 and P=0.028). Two weeks after treatment, the percentage of ulcer healing was 79.2% or 81.9% in EAC group and 69.2% or 76.1% in OAC group by ITT or PP analysis, respectively (P> 0.05). Low side effects were noted in EAC or OAC groups (3.3% vs. 7.5%,P>0.05). Conclusion The high eradication will be achieved by esomeprazole-based triple regimen which is superior to omeprazole-based triple regimen in treatment of patients with homEM genotype.

The dialysis method was employed to prepare blank and doxorubicin (DOX) loaded micelles formed by temperature- and pH- sensitive polyhistidine-co-polyDL-lactide-co-glycolide-co-polyethyleneglycol-co-polyDL-lactide-co-glycolide-co-polyhistidine (PHis-b-PLGA-b-PEG-b-PLGA-b-PHis). The critical micelle concentrations (CMC) of the copolymers were measured with Pyrene Fluorescent Probe Technique. The temperature- and pH- sensitive properties of the blank micelles solution were investigated by optical transmittance measurement. The morphology and diameter of DOX micelles were characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The entrapment rate and drug-loading rate were determined with dialysis method. The in vitro release study was further performed to examine the temperature- and pH-responsive drug release behavior from DOX-loaded micelles. The results indicated that the CMC, entrapment efficiency and drug-loaded amount of the micelles were 7.5 x 10(-3) g x L(-1), 85.2 +/- 3.1% and 10.4 +/- 4.5%, respectively. The DOX micelle was globular-shaped with a mean diameter of 91.1 +/- 15.8 nm. The transmittance of micelle solution consistently increased with the increasing temperature or decreasing pH. In comparison to the drug release profile at physiological conditions (37 degrees C, pH 7.4), the DOX-loaded micelles showed faster drug release rate at higher temperature (41 degrees C), lower pH (pH 7.0, pH 6.5, pH 5.0) or higher temperature and lower pH (41 degrees C, pH 5.0). This indicated that the micelles showed a temperature and pH-triggered drug release pattern. Base on the above results, it can be concluded that PHis-b-PLGA-b-PEG-b-PLGA-b-PHis block copolymer micelles which respond to temperature and pH stimuli are promising smart carriers for anti-tumor drugs with the advantages of temperature- and pH- triggered drug release.

Objective: To measure serum monocyte chemoattractant protein-1 (MCP-1) levels and study its associations with lipoproteins in patients with polycystic ovary syndrome (PCOS). Methods: Sixty-five PCOS women and 20 ovulating normal women with body mass index (BMI)

AIM: To investigate the effects of melatonin (MT) on the immunological function in colon of rats immunological colitis. METHODS: The rats colitis was produced by enema with trinitrobenzene sulfonic acid and ethanol. The experiment groups included normal group, model group, 5-aminosalicylic acid (5-ASA) group (100 mg?kg~(-1)), MT groups (2.5,5.0,10.0 mg?kg~(-1)), and treated intracolon with saline, saline, 5-ASA and MT respectively (once per day, from the d7 after the establishment of colitis model to the end of the experiment). The content of interleukin (IL-1, IL-2) and tumour necrosis factor (TNF)-? in rats colon were detected; The inflammatory colon were homogenatized and incubated with lipopolysaccharides (LPS), and designed as control group, model group, 5-ASA group (100?mol/L), MT groups(0.01, 0.1, 1.0 mmol/L). The content of IL-1, IL-2, TNF-?, nitric oxide (NO), lactic dehydrogenase (LDH), myeloperoxidase (MPO) and malondiadehyde (MDA) in the supernant were detected. RESULTS: In model group, the contents of IL-1, IL-2 and TNF-? in colon elevated remarkably and MT depressed this effectively. In the inflammatory colon homogenates of rats colitis, the content of IL-1, IL-2, TNF-?, NO, LDH, MPO and MDA elevated remarkably, Pretreation with MT depressed the content of IL-1, TNF-?, LDH, MPO and MDA effectively. MT (1.0mmol/L) also reduced the production of NO obviously. CONCLUSION: The abnormal immunological function is shown obviously in rats colitis. MT normalizes this change in vivo and in vitro and attenuates the mucosal damage.

ObjectiveTo study the relevant effect of proinflammatory cytokines interelenkin-17(IL-17), -6 and endothelin-1 (ET-1) on statins attenuating no-reflow phenomenon after myocardial ischemia-reperfusion in rats.MethodsEighteen healthy male Wistar rats were randomly divided into 3 groups according to body weight: sham operation, injury, preconditioning groups. The preconditioning group was given atorvastatin 2 mg·kg-1 ·d-1 and the other two groups were given the same volume of saline once. After 7 days, the rats were anesthetized with an intraperitoneal injection of chloral hydrate, and then the thoracic cavity was opened. The coronary artery of injury group and preconditioning group were ligated for 60 minutes, and then opened for 15 minutes, to establish the rat acute myocardial ischemia-reperfusion model. The sham operation group was was treated with a seam through the coronary artery without ligation. Eleetrocardiogram was checked before ligation, and ligation was carried out for 15, 30, 45 minutes and then reperfusion for 15 minutes. After reperfusion for 15 minutes, the thioflavine S and Even's were injected from femoral venous, then the heart and blood were obtained(keeping left ventricular only). Hearts were flushed with saline and sliced transversely into five to seven sections. Finally, observed at 365 nm wave length the existence of non-fluorescent areas, which was no-reflow zone. The level of serum IL-17, IL-6 and ET-1 was detected by ELISA. Results The electrocardiogram confirmed that the sham operation group had no ischemic damage and the model of myocardial ischemia- reperfusion was established in preconditioning group and injury group. The noreflow phenomenon could be observed under 365 nm wave length in preconditioning group and injury group. The ligated area[LA％, (57.34 ± 11.49)％, (53.08 ± 8.66)％] of injury group and preconditioning group was higher than that of sham operation group(0, all P ＜ 0.05); the area of no-reflow[ANF％, (48.96 ± 6.94)％, (21.37 ±3.35)％] of injury group and preconditioning group was higher than that of sham operation group(0, all P ＜ 0.05),and the ANF％ of preconditioning group was lower than that of injury group(P ＜ 0.05) ; the level of serum IL-17,IL-6 and ET-1[(151.67 ± 11.19) × 10-9, (167.89 ± 5.13) × 10-9, (322.37 ± 19.08) × 10-9 g/L] of injury group was higher than those of sham group and preconditioning operation group[(49.75 ± 14.06) × 10-9, (59.32 ± 5.26) ×10-9, (109.9 ± 12.12) × 10-9, (90.45 ± 11.63) × 10-9, (112.47 ± 10.40) × 10-9 and(198.91 ± 27.88) × 10-9 g/L,P ＜ 0.05], the level of serum IL-17, IL-6 and ET-1 of preconditioning group was higher than those of sham operation group(P＜ 0.05). Conclusionsno-reflow phenomenon is related with IL-17 and ET-1 which can promote the expression of IL-6, statins decreases the expression of IL-17 and ET-1, and then decreases the on-reflow phenomenon.

Objective To explore the value of 18F-FDG PET/CT on the assessment of chemotherapy response in patients with diffuse large B-cell lymphoma (DLBCL). Methods 18F-FDG PET/CT was performed before and after 4 cycles of chemotherapy( R-CHOP or CHOP protocol) in 53 patients with DLBCL. The patients were divided into 3 groups: complete response group, partial response group and no response group. The therapeutic response was assessed by comparing post-treatment 18F-FDG PET/CT with pre-treatment PET/CT. Complete remission (CR) rate at the end of chemotherapy was calculated. χ2 test was performed with software SPSS 13.0. Results CR rates of complete response group, partially response group and no response group were 88.5% (23/26), 73.3% (11/15) and 8.3% (1/12), respectively (χ2=23.548, P=0.000). CR rates of the complete and partially response groups were significantly higher than those of no response group (χ2=22.656, P=0.000; χ2=11.407, P=0.001). Conclusion 18F-FDG PET/CT may be useful for the assessment of chemotherapy response in DLBCL.

Objective To investigate the imaging characteristics and diagnostic value of tri-phase dynamic enhancement scan with CT for acute renal infarction. Methods The image features of CT plain scan and tri-phase dynamic enhancement scan of 10 patients (19 sides) with acute renal infarction were retrospectively analyzed, and the CTA expression of 6 patients were observed. Results Fourteen acute renal infarction lesions of 10 cases were diagnosed. The CT scan showed there were 4 cases with enlargement of kidney, and the other 6 cases were of no abnormality. The tri-phase enhancement CT scan showed there were 6 cases of unilateral renal infarction and 4 cases of bilateral renal infarction, which totally involving 14 sides. The acute renal infarction lesions lacked of high density region in the corticomedullary in cortical phase, and there were wedge-shaped hypodense area, even low density of full kidney in parenchymal phase and pyelographic phase. The a-cute renal infarction lesions were revealed better in parenchymal phase and pyelographic phase than in cortical phase. Six cases of CTA re-vealed the responsible vessels of renal infarction lesions and the other vascular diseases. Conclusion CT tri-phase dynamic enhancement scan has important value in the diagnosis of acute renal infarction, and CTA can identify the responsible vessels of renal infarction lesions.

Cutaneous Fistula ; Digestive System Abnormalities ; therapy ; Endoscopy, Gastrointestinal ; methods ; Female ; Humans ; Infant ; Treatment Outcome

Objective To learn the plague's host animals and parasitic flea composition, and to investigate the natural foci of plague in Xiji county in order to provide basic information for plague prevention and control. Methods The Citellus alaschanicus density, nocturnal rodents, the body flea, the burrow track flea, the nest flea were investigated in 8 townships (town) of Xiji county from June 11 2007 to July 25 2007. Specimens of small mammalian, fleas were collected for bacteriological and serological testing. Results The average density of the main host Citellus alaschanicus was 0.85 per hectare. The nocturnal mouse capture rate was 0.80%(24/2987).The survey found 16 species of small mammals that belonging to 3 orders, 9 families and 16 species with Citellus alaschanicus the dominant species. The Citellus alaschanicus had 2.84 fleas per body. Four families and 16 species of fleas were identified in the areas. The Citellus alaschanicus and Citellophilus Tesquorum Mongolicus were the dominant species. Plague bacteriology and serology tests were negative. Conclusions The study shows that the area is suitable for the formation of natural foci of Citellus alaschanicus plague. Surveillance is an important measure for prevention and control of the plague.

Objective The aim of the experiment is to make an intracranial aneurysm model in canine.Methods A digital tube was made based on raw magnetic resonance images of the human intracraaial carotid artery.Then 6 tubes were made in the 3 D rapid prototyping machine and coated with silicone.Finally we isolated the common carotid arteries of 6 canines and made them go through the tubes and anastomosed them end-to-side to get the aneurysm model.Six stents were implanted after one week.Results Six aneurysm models were successfully made in canines.The parent artery had similar geometrv of the human carotid siphon.All the aneurysms and parent arteries were patent in one week's follow-up.One canine died of excessive anesthesia after stentingr Two vaseular models kept patent in one month without stenosis.The other 3 had some stenosis on the bends of the vessel.Conclusions The aneurysm model in tIle experiment has high flexibility and reliability.The model provides an effective tool for research and testing neurovascular devices.It's also a useful device to train the neuroradiologists and interventional physicians.