Objective To investigate the effect of interleukin-1 (IL-1) on contractile function of rat thoracic aorta.Methods Forty male Sprague-Dawley rats,weighing 250-300 g,were sacrificed to obtain the thoracic aortic rings.The experiment was performed in 2 parts.Part Ⅰ The thoracic aortic rings were divided into 2 segments and randomly divided into 2 groups (n =20 each):control group and IL-1 group.In IL-1 group,the thoracic aortic rings were incubated with Kreb solution containing 20 ng/ml IL-1 for 2 h,and contracted with cumulative concentrations of phenylephrine,ranging from 10-9 to 10-5mol/L.In control group,the thoracic aortic rings were incubated with Kreb solution for 2 h,and contracted with cumulative concentrations of phenylephrine,ranging from 10 9 to 10-5mol/L.Part Ⅱ The thoracic aortic rings were divided into 3 segments and randomly divided into 3 groups (n=20 each):IL-1 group,IL-1+ L-NAME (the NOS inhibitor) group and IL-1 +cyclooxygenase inhibitor indomethacin group (IL-1 +Ⅰgroup).The thoracic aortic rings were incubated with Kreb solution containing 20 ng/ml IL-1 for 1.5 h in the three groups.In addition,in IL-1 +L-NAME and IL-1 +Ⅰ groups,the thoracic aortic rings were incubated for 30 min with Kreb solution containing 100 μmol/L L-NAME and 2.5 mmol/L indomethacin,respectively.Contraction of the thoracic aorta was then induced with cumulative concentrations of phenylephrine,ranging from 10 9 to 10-5 mol/L.In group IL-1,the thoracic aortic rings were incubated with Kreb solution.The maximum contractile tension of the thoracic aortic rings was recorded at each concentration of phenylephrine,and the percentage of the maximum contractile tension at the concentration of 10-6 mol/L in group C was obtained.Results Part Ⅰ The percentage of contractile tension at phenylephrine 10-s,10-7,l0 6 and 10-5mol/L was significantly decreased in IL-1 group as compared with C group.Part Ⅱ The percentage of contractile tension at phenylephrine 10-7,10-6 and 10-5mol/L was significantly increased in IL-1+L-NAME and IL-1+I groups as compared with IL-1 group.Conclusion IL-1 can inhibit the contraction of rat thoracic aorta,and promoted production of NO and prostacyclin may be involved in the mechanism.

Objective To determine the distribution of Helicobacter pylori (H.pylori) iceA, babA2 in patients in Shanghai and explore the association of H. pylori strain genotype with its clinical outcome after infection. Methods A total of 141 H. pylori strains was isolated from gastric biopsy samples of 43 patients with chronic gastritis, 47 patients with duodenal ulcer (DU), 30 patients with gastric ulcer(GU) and 21 patients with non cardia gastric carcinoma. The iceA, vacA, cagA, and babA2 genotypes were determined by polymerase chain reaction (PCR). Results iceA1, iceA2 and babA2 were detected in 74.5% (105/141) , 15.6% (22/141) and 63.8% (90/141) of the 141 H.pylori strains, respectively, while 2 of isolated H. pylori strain (1.4%) were positive for both iceA alleles and 16(11.3%) were negative for both iceA alleles. The prevalence of babA2 and the combined genotype of babA2 and cagA in H. pylori isolated from DU patients were significantly higher than that in GU patients (74.5% vs. 50.0% for babA2, P =0.028; 70.2% vs. 46.7% for babA2 and cagA, P =0.039). There was no significant difference in prevalence of babA2 among other disease groups. No association of different clinical diseases with iceA genotype was detected. Conclusions The most common genotype of H.pylori strains isolated from patients in Shanghai is iceA1 +/babA2 +. babA2 may play different role in the pathogenesis of duodenal ulcer and gastric ulcer. No association between iceA status and clinical outcome of H.pylori infection was confirmed in our study.

Objective To study the diagnosis accuracy and features of echocardiography on aortic coarctation combined with hypoplastic aortic arch. Methods The echocardiographic characteristics of seven patients who were diagnosed as aortic coarctation combined with hypoplastic aortic arch were analyzed and compared with results of cardiac catheterization, CT scan and operation. The diagnostic features of echocardiography were summarized. Results Besides the echocardiographic characteristics of aortic coarctation,other specific echocardiographic characteristics of hypoplastic aortic arch were:distinct stenoses of transverse and decsending part of aortic arch were visualized in supra-sternal long-axis view; the range of hypoplastic part started from innominate artery beginning or left common carotid artery beginning; the ratio of diameter of hypoplastic aortic arch over that of descending aorta at diaphragm was less than 0. 5; the blood flow speed detected by Doppler at the site of aortic coarctation was in the normal range. The echocardiographic characteristics of the aortic coarctation combined with hypoplastic aortic arch were correspondent to the results of cardiac catheterization, CT scan and operation results. Conclusions There is high accuracy of echocardiography in diagnosis of aortic coarctation combined with hypoplastic aortic arch. Hypoplastic aortic arch should be paid more attention in diagnosis of aortic coarctation.

malities should be alerted in TOF.

Objective To investigate the effects of ethyl pyruvate (EP) pretreatment on the liver injury in rats undergoing orthotopic liver transplantation (OLT).Methods Forty male adult SD rats,weighing 220-250 g,served as liver transplant donors and recipients.The recipient rats were randomly divided into 3 groups ( n =8 each):sham operation group (group S),OLT group and EP group.Group S only underwent simple laparotomy.The model of OLT was established according to the modified Kamada's two-cuff technique in groups OLT and EP.EP 40 mg/kg was injected via the caudal vein at 1 h before skin incision in group EP.Venous blood samples were taken at 2 h of neohepatic phase to determine the serum activities of alanine amino-transferase (ALT) and aspartate amino-transferase (AST).Hepatic specimens were obtained to detect the content of malondialdehyde (MDA) and activity of superoxide dismutase (SOD).Results Compared with group S,the levels of serum ALT and AST and MDA were significantly increased and the activity of SOD was significantly decreased in groups OLT and EP ( P ＜0.05 or 0.01).The levels of serum ALT and AST and MDA were significantly lower and the activity of SOD was significantly higher in group EP than in group OLT ( P ＜ 0.05 or 0.01 ).Conclusion Ethyl pyruvate pretreatment can attenuate the liver injury in rats undergoing OLT.

Objective To investigate the effects of ulinastatin on the myocardial injury in patients undergoing live donor liver transplantation.Methods Forty patients (AHA classification grade A or B),aged 40-64 yr,with a body mass index of 18-25 kg/m2,scheduled for live donor liver transplantation,were randomly divided into 2 groups ( n =20 each):control group (group C) and ulinastatin group (group U).Anesthesia was induced with midazolam,sufentanil,and cisatracurium besilate.The patients were tracheal intubated and mechanically ventilated.Ulinastatin 300 000 IU in 100 ml of normal saline was infused intravenously over 30 min after anesthesia induction and then the infusion was repeated at 4 h interval until the end of operation in group U,while the equal volume of normal saline was given in group C.Blood samples were taken from the central vein immediately before skin incision (T0,baseline),at 30 min of anhepatic phase (T1),at 30 min of neohepatic phase (T2),and at 0,4 and 24 h after operation (T3-5) for determination of the concentrations of serum cardiac troponin Ⅰ (cTnI),creatine kinase-MB (CK-MB) and N-terminal pro-brain natriuretic peptide (NT-proBNP).The changing rates of cTnI and CK-MB at T1-5 were calculated.The use of cardiovascular drugs and cardiovsscular accidents were recorded during operation.Results The serum cTnI,CK-MB and NT-proBNP concentrations were significantly higher at T2-5 than at T0 in the two groups ( P ＜ 0.05).Compared with group C,the serum cTnI,CK- MB and NT-proBNP concentrations at T2-5 were significantly deceased in group U ( P ＜ 0.05).The maximal changing rates of cTnI,CK-MB and NT-proBNP concentrations were 4.71 ± 1.62,6.85 ± 1.53 and 4.96 ± 1.23 respectively in group C,decreased to 3.26 ± 1.51,4.56 ± 1.62 and 3.67 ± 1.02 respectively in group U.There was no significant difference in the incidence of cardiovascular accidents and the use of dopamine between the two groups.Conclusion Intravenous infusion of ulinastatin can attenuate the myocardial injury to some extent in patients undergoing live donor liver transplantation.

Objective To analyze the investigation and treatment of signet ring cell carcinoma of pancreas.Method The clinical data of patients with histopathologically confirmed signet ring cell carcinoma of pancreas were analyzed retrospectively.Results There were 4 patients with signet ring cell carcinoma.There was no patient who presented with a typical carcinoid syndrome.Most patients presented with upper abdominal pain,backache or jaundice caused by bile duct obstruction.In one patient CA19-9 and CEA were raised.All patients received palliative biliary bypass and needle biopsy of the tumour.The median survival was 2.8 months.Conclusions Pancreatic signet ring cell carcinoma is a rare disease with poor prognosis.Surgery is the only effective treatment but the resectability rate is low.Whether this tumour responds to chemotherapy requires further studies.

Objective To investigate the expression and the role of Tim-3 and Th-17 in ITP patients and to research their clinical application. Methods Total 42 active ITP patients and 39 healthy donors were recruited in this research. The expressions of Th17 and CD4+ CD25+ Treg were measured with flow cytometer. IL-17, IFN-γ levels as well as IL-4 plasma levels were determined by ELISA. The mRNA expression of Tim-3, IFN-γ, IL-4 and T-bet were measured using RT-PCR in all samples. Results The expression of Th17 cells in ITP patients was (2.41 ± 1.43 )%, which was significantly higher than control group ( 1.08 ± 0.59)% ( t = 5.35, P < 0.05 ). But the percentage of Treg in ITP patients was ( 1.64 ±0.74)%, which was lower than control group (3.12 ±0.52)% (t = 10.33, P <0.05). The levels of IL-17 in plasma of ITP and controls were ( 14.42 ±6.37) ng/L and ( 13.91 ±4.47) ng/L respectively (t =0.42, P > 0.05). The level of IFN-γin plasma of ITP was (55.74 ± 15.25 ) ng/L, which was higher than control group (31.33 ± 12.99) ng/L (t = 7.72, P < 0.05 ). The level of IL-4 in the plasma of ITP was (7.42 ± 1.50) ng/L, which was lower than controls ( 18.17 ± 5.19) ng/L ( t = 12.87, P ＜ 0.05 ). Both IFN-γand T-bet mRNA levels were up-regulated in active ITP patients by the factor ( 8.57 ± 3.44 ) -fold and (3.34 ± 1.32)-fold than control group (t = 13.21,6.41 ,P <0.05). The decreases observed in IL-4 and Tim-3 were (0.25 ±0.15 )-fold and (0.29 ±0.15)-fold respectively in ITP patients compared with control group (t=10.02,9.61,P＜0.05 ). Conclusion The imbalance of Th17/Treg and the decrease of Tim-3 might be important determinants in the evolution of ITP.

Objective To compare the severity of periopemtive myocardial injury caused by live donorliver transplantation (LDLT) performed under sevoflurane and pmpofol combined anesthesia in adult patients. Methods Forty ASA Ⅱ-Ⅳ patients(liver function Child-Pugh grade B or C)aged 40-67 yr weighing 47-95 kgundergoing right lobe LDLT were randomly divided into 2 groups(n=20 each):sevoflurane combined anesthesiagroup (group S) and propofol combined anesthesia group(group P).Anesthesia was maintained with 1.6%-3.0% sevoflurane in group S or PCI of pmpofol(Cp 2-4μg/ml)in group P combined with sufentanil infusion at 0.5- 1.0 μg·kg-1·h-1 and intermittent iv boluses of cisatracurium in both groups.MAP,HR,CVP,MPAP,PCWP, CO and mixed venous O2 saturation(S(v)O2)were recorded before skin incision at 5 and 30 min of anhepatic phaseand 5 and 30 min of ncohepatic phase and the end of operation:Blood samples were taken from central vein beforeskin incision(T0,baseline)at 30 min of anhepatic phase(T1),30 min of neohepatic phase(T2),the end ofsurgery (T3) and 24,48,72 h after operation (T4,5,6) for determination of serum concentrations of cardiactroponin I (cTnI) and creatine kinase MB(CK-MB).Postoperative adverse effects were recorded.Results Thetwo groups were comparable with respect to 8ex ratio(M/F),age,body weight,duration of operation,duration ofanhepatic phase,blood loss,dopamine and nitroglycerin consumption.There was no significant difference in MAP, HR,CVP,MPAP,PCWP,CO and S(v)O2 between the two groups.The serum concentrations of cTnI and CK-MB were significantly increased at T2-5 as compared with the baseline value at T0 in both groups. There was no significant difference in serum concentrations of cTnI and CK-MB and in the incidence of myocardial ischemia and arrythmia between the two groups. Conclusion Sevoflurane and propofol combined anesthesia have similar effects on myocardial injury caused by LDLT in adult patients.

DNA barcoding technology is widely opplied for species identification and discovery by using short and standard fragments of DNA sequences. In this study, the cytochrome c oxidase subunit 1 (COI) sequence as a DNA barcode was used to identify the Gekkogecko Linnaeus medicinal materials and adulterants in order to provide a new identification method of G. gecko Linnaeus. Genomic DNA was extracted from the experimental samples. The COI regions of nrDNA were amplified using polymerase chain reaction and sequenced bidirectionally. The alignment and NJ tree construction were performed in MEGA6.0. COI sequences can be obtained from all samples. The average intra-specific K2P distance of G. gecko Linnaeus was 0.005 and the maximum intra-specific distance was 0.013. All the G. gecko Linnaeus medicinal samples clustered into a clade in the NJ tree and can be distinguished from the adulterants. In a conclusion, COI can be used to correctly identify G. gecko Linnaeus, and it will be a potential DNA barcode for identification of other animal medicinal materials.