Objective:To study the influence of harvest time on the characters of Chaenomeles Spciosa ( Sweet) Nakai to determine the optimal harvest time with traditional characters of the Chinese medicine. Methods: In order to explore the optimal harvest time of Chaenomeles Spciosa ( Sweet) Nakai, the content of alcohol-soluble extract, weight and acidity of Chaenomeles Spciosa ( Sweet) Nakai with different harvest time were determined, the weather conditions in recent 3 years was summarized, and the drying process was also studied. Results:The average weight of Chaenomeles Spciosa(Sweet)Nakai was the lowest in June and highest in August, and the den-sity reached maximum in mid-July. During the whole harvest time, the content of alcohol-soluble extract was stable. The weather con-ditions from mid-July to late-July were with high temperature, dry and little rain, which was suitable for drying of Chaenomeles Spciosa ( Sweet) Nakai. Conclusion:The optimal harvest time of Chaenomeles Spciosa( Sweet) Nakai is confirmed in mid-July according to the traditional customs, drying conditions and characters of the Chinese medicine.

Objective To study the regulatory ability of peroxisome proliferator-activated receptor ?(PPAR?) ligands to the inflammatory response in human gallbladder epithelial cells. Methods Culture human gallbladder epithelial cells and identify them . Cells were treated for 24 hours with 0, 10 ?mol/L, 20 ?mol/L, 30 ?mol/L, 50 ?mol/L and 100 ?mol/L of Ciglitazone during cellular growth peak(5th day), then stimulated them with hIL-1? 5 ng/ml for 2 hours and measured the concentration of IL-6、IL-8 and TNF-? in cellular supernatants by riadioimmunoassay. Results Contrasted with control group, the expression of IL-6 and IL-8 in each test group were inhibited ((P

Objective To study the clinical effect of total parathyroidectomy on the patient with secondary hyperparathyroidism related to chronic renal failure. Methods The clinical data of 12 cases of total parathyroidectomy were retrospectively analyzed. All changes between preoperation and postoperation were compared, that included the clinical presentations, serum calcium and phosphate, plasma alkaline phosphatase (AKP), parathyroid hormone (iPTH), blood haematocrit (HCT), blood-lipid(TG) and complications. Results The clinical symptoms and signs were markedly improved in all cases. A postoperative decrease in the laboratory indexes of serum calcium and phosphate, AKP, iPTH, HCT was also observed(P<0.05). But the difference of TG did not reach statistical significance(P>0.05). Hypocalcaemia occurred in all patierts in different degrees. Plasma iPTH maintained at high level in 1 case and recurrence happened in 1 case after operation. Conclusions Total parathyroidectomy is an effective treatment for severe uremic secondary hyperparathyroidism and can improve the patient's life quality.

Objective To detect the protective effect of sufentanil preconditioning on hepatic ischemia-reperfusion injury in rats and the role of c-Jun N-terminal kinase signal pathway in the mech-enism.Methods One hundred and sixty-two SD rats(in either gender,weighing 250-300 g)were ran-domly divided into seven groups:Sham-operated group (group S,n = 30 ),ischemia-reperfusion group (group IR,n =30),sufentanil preconditioning group (group SF1:1 μg/kg,n =30;group SF5:5 μg/kg,n =30;group SF10:10 μg/kg,n =30),SP600125 group (group SP,n =30),and dimethyl sulphoxide control group (group DMSO,n =6),different doses of sufentanil was administered 30 min before hepatic ischemia in group SF1,SF5 and SF10.Blood and liver samples were collected from each group at 0(T1 ),1 (T2 ),2 (T3 ),4 (T4 ),and 6 (T5 )hours after reperfusion.Serum alanine amin-otransferase (ALT)and aspartate aminotransferase (AST)were measured by an automatic biochemi-cal analyzer.Malondialdehyde (MDA)and superoxide dismutase (SOD)in liver tissue was measured. Liver sample was stained with HE to observe the hepatic pathological changes.Immunohistochemical method was used to determine the expression of JNK and western blotting was used to detect the ex-pression of P-JNK.Results Compared with group S,levels of AST,ALT increased significantly in group IR,SF1,SF5,SF10 at T1-T5 and in group SP,DMSO at T3 (P <0.05 ).Compared with group IR,levels of AST,ALT decreased significantly in group SF1,SF5,SF10 at T1-T5 and in group SP at T3 (P <0.05).Compared with group S,levels of MDA,SOD increased significantly in group IR,SF1, SF5,SF10 at T1-T5 and in group SP,DMSO at T3 (P < 0.05 ).Compared with group IR,levels of MDA,SOD decreased significantly in group SF1,SF5,SF10 at T1-T5 and in group SP at T3 (P <0.05).Compared with group SF1 and SF5,levels of MDA,SOD decreased significantly in SF10 at T4 . Compared with T1 ,the expression of p-JNK in group IR increased significantly at T3 (P < 0.05 ). Compared with group S,the expression of p-JNK in groups IR,SF1,SF5,SF10,SP,DMSO increased significantly at T3 (P < 0.05 ).Compared with group IR,the expression of p-JNK in groups SF1, SF5,SF10,SP decreased significantly and that in groups SF5,SF10 were less than that in group SF1 (P <0.05 ).The expression of p-JNK in group SF10 was less than that in group SF5 (P < 0.05 ). Conclusion Sufentanil preconditioning can reduce the hepatic ischemia-reperfusion injury and the dos-age of 10 μg/kg was the most effective.The protective mechanisms may inhibit JNK pathway and re-duce the expression of JNK.

Objective To analyze the therapeutic effect of percutaneous transhepatic cholangial drainage (PTCD) in the treatment of bile duct obstruction in patients with malignant hilar bile duct carcinoma,and to discuss the clinical application and practical value of PTCD.Methods A total of 55 patients with malignant biliary obstruction were divided into the PTCD group (30 cases who recieved percutaneous transhepatic cholangial drainage) and the control group (25 cases who recieved endoscopic stent implantation).Observed the preoperative and postoperative biochemical indexes of PTCD group,including serum total bilirubin (TB),serum direct bilirubin (DB),serum alanine aminotransferase (ALT) and serum glutamic acid amino turn shift of aspartate aminotransferase(AST) and serum alkaline phosphatase(AKP).Compared the effect rate and postoperative survival time of the two groups through postoperative follow-up.Results The TB,DB,ALT,AST and APK of PTCD group one week after operation changed obviously compared with the relative index before opreation with statistically significant differences (P<0.05), which indicated a significant improvement of biochemical indicators.The treatment efficiency of the PTCD group and the control group were 83.3% and 64.0% respectively, and survival time of the two groups were(7.5±2.6)months and(4.8±2.8)months respectively.Results of the PTCD group was significantly better than that of the control group,and the differences were statistically significant(P<0.05).Conclusion All the patients with PTCD get better biochemical indicators and longer postoperative survival time,and the interventional therapy PTCD can be used as an effective clinical treatment method for bile duct obstruction with malignant hilar bile duct carcinoma.

Objective To compare the number of lymph node dissected by intraoperative lymphatic mapping guided D2 gastrectomy and that by standard D2 gastrectomy plus lymphadenectomy in patients of advanced gastric cancer. Methods In this study 20 advanced gastric cancer cases received intraoperative peritumor injection of carbon nanoparticles suspension ( group 1 ) and D2 lymphadenectomy was guided by the black-stained lymph nodes. 21 cases undergoing standard D2 lymphadenectomy served as controls (group 2). The number of lymph nodes removed and the condition of lymphatic metastasis in two groups, blackstained lymph nodes in group 1, and postoperative complications were compared. Results The average lymph nodes dissected in group 1 (35. 1 ± 13.4) were higher than in control group (26.2 ±7.8). The differences were statistically significant (t =2. 126, P =0. 034). The number of removed N2 and N3 lymph nodes in group 1 were more than that in control group. The total black-stained ration of lymph nodes was 52. 7% in group 1. The positive rate of lymph nodes was higher in black-stained lymph nodes (27.6%) than in unstained lymph nodes ( 10. 8% ) in group 1 and in control group ( 16. 9% ). The differences were also statistically significant ( x2 = 6. 034, P = 0. 016; x2 = 5. 142, P = 0. 023 ). Postoperative afferent loop obstruction developed in one case in group 1. Conclusions Lymphatic mapping guided D2 radical gastrectomy plus lymphadenectomy increases the number of lymph nodes dessected and improves the efficiency of positive lymph nodes excision for patients of advanced gastric cancer.

Objective To study hepatic blood flow exclusion for the resection of liver tumors involving hepatic hilar region. Methods The clinical data of 16 cases of liver tumors involving hepatic hilar region from January 2005 to March 2008 were retrospectively analyzed. Liver tumors were resected by the technique combining hepatic portal control ( Pringle's maneuver) and normothermie total hepatic vascular exclusion (NHVE). The relation of liver tumors to major vessels, episodes and durations of hepatic blood flow exclusion, intraoperative blood loss and blood transfusion, postoperative complications were analyzed. Results The technique combining Pringle's maneuver and NHVE was used in 16 cases. The mean episodes and durations of Pringle's maneuver were (3.8±1.6) min and (46.6±28.8) min, respectively. The mean episodes and durations of NHVE were (1.6±0.4) min and (23.5±8.2) min, respectively. The mean amount of intraoperativ blood loss was (1250±320) ml, blood transfusion (860±245) ml. Major hepatic vessel injuried were repaired intraoperatively including inferior vena cave in 4 cases, main hepatic veins in 2 cases and portal veins in 2 cases. The serum alanine transaminase(ALT) and bilirubin raised in different degrees after operation, and recovered gradually to normal level. There was no postoperative mortality and serious postoperative complications. Conclusions Alternative use of hepatic blood flow exclusion combining Pringle maneuver and NHVE reduces the time of total hepatic vascular exclusion, improves safety for resection of liver tumors involving hepatic hilar region.

Objective To investigate the suppression of mrp1 and MRP1 induced by small interfering RNA and the restoration of sensitivity to chemotherapeutic drugs in the multidrug-resistant hepatocellular carcinoma cell lines HepG2/mrp1. Methods mrp1-targeted small interfering RNA duplexes were designed and composed and introduced into multidrug-resistant hepatocellular carcinoma cell lines HepG2/mrp1. The suppression of mrp1 mRNA and its gene product MRP1 was examined by RT-PCR and flow cytometry (FCM), respectively. MTT assay was performed to measure the reverse effect of small interfering RNA based on the results of ICs0. Results The overexpression of mrp1 mRNA and MRP1 was effectively suppressed by small interfering RNAs. The level of mrp1 mRNA in the transfected HepG2/mrp1 cells was reduced to (86.36±2.76)% and MRP1 to (89.38±3.76)%compared with those of the controls. The resistance to ADR was reversed five-fold, which indicated the restoration of sensitivity to drugs. Conclusion Small interfering RNA can inhibit mrp1 expression effectively and reverse the multidrug resistance mediated by MRP1.

Objective To evaluate the effect of dezocine on cognitive function after sevoflurane anesthesia in a rat model of physiological stress.Methods Physiological stress was induced by applying repeated foot shock stimulation and confirmed by open field test.Thirty Spragne-Dawley rats with physiological stress,weighing 180-220 g,were divided into 3 groups (n=10 each) using a random number table:control group (group C),sevoflurane group (group S) and dezocine plus sevoflurane group (group D+S).Normal saline 0.5 ml was intraperitoneally injected at 6 h of oxygen inhalation in group C.Normal saline 0.5 ml was intraperitoneally injected at 6 h of 3.0％ sevoflurane inhalation in group S.Dezocine 3 mg/kg was intraperitoneally injected at 6 h of 3.0％ sevoflurane inhalation in group D+S.At 1,12,24 and 48 h after the end of intraperitoneal injection (T1-4),Morris water maze test was performed,and the time of staying at the original platform quadrant and frequency of crossing the original platform were recorded.The rats were sacrificed after the end of Morris water maze test,brains were removed and hippocampi were isolated for determination of nitric oxide synthase-1 (nNOS) expression (by Western blot) and nNOS positive cells (by immunohistochemistry).Results Compared with group C,the time of staying at the original platform quadrant was significantly shortened at T1,2,the frequency of crossing the original platform was reduced at T1,the expression of nNOS in hippocampus was down-regulated,and the number of nNOS positive cells in hippocampal CA1 region was reduced in group S (P＜0.05),and no significant change was found in the parameters mentioned above in group D+S (P＞0.05).Compared with group S,the time of staying at the original platform quadrant was significantly prolonged at T1,the frequency of crossing the original platform was increased at T1,2,the expression of nNOS in hippocampus was up-regulated,and the number of nNOS positive cells in hippocampal CA1 region was increased in group D+S (P＜0.05).Conclusion Dezocine can improve cognitive function after sevoflurane anesthesia in a rat model of physiological stress,and the mechanism may be related to up-regulating nNOS expression in hippocampi.

Objective : To investigate the effect of paederosidic acid methyl ester (PAME) on postoperative learning and memory impairment in mice and its mechanism. Methods : C57BL/6J male mice were randomly divided into Sham group , operation group , operation + PAME group ( PAME group) , operation + NADPH oxidase 4(Nox4) adeno⁃associated virus overexpression group (Nox4 overexpression group) , operation + Nox4 adeno⁃associated virus no⁃laden group ( AAV no⁃load group) , and operation + PAME + Nox4 overexpression group ( PN group) . Exploratory laparotomy was performed. PAME(20 mg/kg) was administered by continuous gavage for 7 days after operation , and adeno⁃associated virus was injected into the hippocampus 28 days before operation. Morris water maze test and conditioned fear test were used to detect the learning and memory ability of mice. The expression of Nox4 protein was observed by immunofluorescence. The protein expressions of Nox4 , long chain acyl CoA synthetase 4 (ACSL4) and glutathione peroxidase 4 (GPX4) were detected by Western blot. Reactive oxygen species (ROS) and iron content were determined by spectrophotometry. Results : Compared with the Sham group , the learning and memory ability of the operation group , the Nox4 overexpression group and the AAV no⁃load group decreased , the protein expression of Nox4 and ACSL4 increased , the protein expression of GPX4 decreased , and the ROS and iron content increased. After PAME treatment , the postoperative learning and memory ability of mice was improved , and Nox4 and ferroptosis in hippocampal neurons were alleviated. Conclusion Conclusion PAME treatment can improve the learning and memory ability of postoperative mice , which may be related to the inhibition of hippocampal Nox4⁃mediated ferroptosis.