Objective To make better use of the antitumor effects of TNF related apopotosis inducing ligand (TRAIL) ,we con-struct a new fusion protein including TRAIL ,for the sake of improving its purity and targeting to hepatocytes .Methods Fusion protein concluding His label protein and human recombinant TRAIL which linked by constructed specifically u-PA cleavage site . TRAIL protein was obtained by disintigrating from the fusion protein which had been purified .Results The purified His-rh-sTRAIL was demonstrated to be cleavable by u-PA and possess enhanced antitumor effect ,it′s toxicity to hepatocytes was reduced . Conclusion The fusion protein His-rhsTRAIL has antitumor effect on colon cancer cell with high efficiency ,highly targeting and low-toxicity .

Objective To evaluate the value of circular anastomotic stapler for sigmoid colostomy in laparoscopy abdominoperi-neal resection .Methods 62 patients of low colorectal cancer treated in our hospital from October 2010 to February 2013 was retro-spectively analyzed .All the patients were treated by laparoscopy abdominoperineal resection ,34 patients received sigmoid colostomy with circular anastomotic stapler(group A) ,and the other 28 patients received sigmoid colostomy with conventional suturing tech-niques(group B) .The medical records including operation time ,the time of return of bowl function ,postoperative hospital stay and postoperative complication rate were analysed statistically .Results All patients received the operations successfully .No conversion to open procedure and no operative death occured in two groups .The result of statistical analysis showed that in group A ,the opera-tion time ,the time of return of bowl function ,postoperative hospital stay time were shorter than group B ,and the rate of edema of sigmoid in group A were lower than group B(P<0 .05) .Conclusion The application of circular anastomotic stapler for sigmoid co-lostomy in LAPR is a safe ,effective and minimally invasive technique ,which can shorten operation time ,postoperative hospital stay and reduce the related complications of colostomy .

Objective: To observe the effects of acupoint sticking therapy of different dosages and durations on the subjective and objective sleep indicators in insomnia patients.Methods: Ninety-six patients with insomnia due to liver-Qi stagnation and spleen deficiency were divided into a high-dosage 7 d group (25 cases), a high-dosage 14 d group (22 cases), a low-dosage 7 d group (21 cases), and a low-dosage 14 d group (28 cases) using the random numbers generated in a stratified and stage-by-stage manner in combination with the visiting sequence. The four groups all received the same acupuncture treatment, but acupoint sticking therapy varied in dosage and duration. Before and after treatment, the actigraphic readings (total time in bed, total sleep time, sleep efficiency, number of wake bouts, length of wakes after asleep, and sleep latency), Pittsburgh sleep quality index (PSQI) score, and symptoms score of traditional Chinese medicine (TCM) were observed. A correlation analysis was conducted among the subjective and objective indicators. Results: The PSQI score was positively correlated with the total time in bed and total sleep time (P<0.05). After treatment, the sleep latency, PSQI scores, and TCM symptoms scores changed significantly in the four groups (P<0.05). The total sleep time and sleep efficiency gained improvements after treatment in the high-dosage 14 d and low-dosage 14 d groups (P<0.05). The high-dosage acupoint sticking groups had longer total sleep time compared with the low-dosage groups of the same treatment duration (P<0.05). After treatment, the length of wakes after asleep, PSQI scores, and TCM symptoms scores were better in the 14 d groups than in the 7 d groups of the same acupoint sticking dosage (P<0.05). Conclusion: Given the same acupuncture treatment, acupoint sticking therapy of different treatment durations produces different effects on the length of wakes after asleep, PSQI score, and TCM symptoms score in insomnia patients, and the 14-day acupoint sticking treatment is superior to the 7-day treatment.

The molecular techniques were used to analyse tyrosine phosphorylation of JAK2 and STAT3 in leptin receptor overpression cell lines and SH2-Bβ knockout (SH2-Bβ-/-) mice. The serum level of leptin in SH2-Bβ mice was measured by ELISA. The results showed that SH2-Bβ dramatically enhanced the leptin-stimulated tyrosine phosphorylation of JAK2 and STAT3 in vitro. Leptin-stimulated activation of JAK2 and phosphorylation of STAT3 were significantly impaired in hypothalamus of SH2-Bβ-/- mice. The fasting and postprandial serum levels of leptin and body weight were markedly increased in SH2-Bβ-/- mice. Therefore, SH2-Bβ is an endogenous enhancer of leptin sensitivity and regulates body weight via leptin/ JAK2/STAT3 pathway.

Objective To study 18F-deoxyglueose positron emission tomography computed tomo graphy(18 FDG PET-CT) in the diagnosis of cervical lymph node(LN) metastasis from rabbit nasopharyngeal VX2 carcinoma.Methods Nasopharyngeal VX2 carcinoma model using 30 rabbits was established. 18 FDG PET-CT,MRI and pathological diagnosis were performed and compared.ResultsFifty-three cervi cal LNs were picked up from resected specimens of 30 rabbits with nasopharyngeal VX2 carcinoma.There were 42 pathologically confirmed positive LNs.Positivity rate was significantly correlated with the volume and the shortest diameter of the LNs (r = 9.18,P =0.007 ; r = 2.77,P = 0.008).The diagnostic sensitivity of PET-CT was 96% (24/25) and 29% (5/17) for LNs with volume >0.5 cm3 and ≤0.5 cm3 ,83% (25/30) and 33% (4/12) for LNs with the shortest diameter ≥0.5 cm and < 0.5 cm,respectively.The diagnostic sensitivity,specificity and accuracy of PET-CT was 69% (29/42) ,100% (11/11) and 95% (40/42) ,com paring with 60% (25/42) ,91% (10/11) and 83% (35/42) of MRl,respectively.The volume measured by PET-CT images was not significantly different from the pathologically measured volume (t =-1.23,P = 0.233) ,while the volume measured by MRI was significantly different from the pathologically measured vol ume (t =-3.99,P = 0.001).Conclusions The sensitivity,specificity and accuracy of PET-CT are better than those of MRl,especially for the cervical lymph nodes with volume >0.5 cm3 or the shortest diameter ≤ 0.5 cm.PET-CT also can be used to detect the smaller metastatic lymph nodes,though the false negative rate is higher.

Objective To investigate the association of TGF-β receptor typeⅡ(TβRⅡ)mRNA with lupus nephritis (LN) and disease activity by testing its expression levelin peripheral blood mononuclear cells (PBMCs).Methotis Forty-four patients with LN were included in this study.They were all had active LN.Twepty-eight LN patients were taking glueocorticoids and/or immunosuppressive agents and sixteen had never taken steroids or immunosuppressive agents.The expression levels of T13R H mRNA were semi-quantitativelydetermined by reverse transcription-polymerase chain reaction(RT-PCR).Resuits The expression levels of TβRⅡ mRNA in PBMCs from LN patients(1.7±1.0)were lower than those of non-lupus nephritis(4.0±3.1) and healthy subiects(4.1±2.5),(P<0.01).The difference of the expression levels between patients who took and had never taken glucocorticoids and/or immunosuppressive drugs was significantly statistically(P<0.05).The expression levels of TβRⅡ mRNA in PBMCs of patients with LN were correlated significantly with the systemic lupus erythematosus disease activity index (SLEDAI)scores(r-0.309.P<0.05),titers of anti-dsDNA antibody(r=-0.401,P<0.01)and serum complement C3 level(r=0.621,P<0.01).Conclusion This study suggests that TβRⅡ may be involved in the development of LN,and the TβRⅡ mRNA expression levels in PBMCs from patients with SLE are significantly correlated with LN activity.Glucocortieoids or immunosuppressive drugs can increase the expression levels of TβRⅡ mRNA and ameliorate renal damage.

Objective In order to investigate the effect of SH2B1 on leptin signal transduction JAK2/IRS2 and its biological function.Methods Vitro kinase assay and Western blot were used to analyse tyrosine phosphorylatin of key molecule JAK2 and insulin receptor substrate-2 (IRS2). ELISA was used to measure the plasma leptin levels in mice. The postnatal growth of mice was monitored over 27 weeks. Results SH2B1 dramatically enhanced the leptin-stimulated tyrosine phosphorylation of JAK2 and IRS2 in HEK293 cells stably expressing LRb (HEK239~(LRb)). Leptin-stimulated activation of hypothalamic JAK2 and phosphorylation of hyphothalamic IRS2 were significantly impaired in SH2B1~(-/-) mice. The deletion of SH2B1 led to leptin resistance,and fasting and randomly fed plasma leptin levels were respectively 3.2 times and 5.1 times higher in SH2B1~(-/-) males than wild-type littermates at 15 weeks of age. SH2B1~(-/-) males gained body weight rapidly and exceeded wild-type littermates from 5~(th) week. SH2B1(-/-) (at 21 weeks) was approximately twice heavier than wild-type littermates.Conclusion SH2B1 is an endogenous enhancer of leptin sensitivity and required for maintaining normal bodyweight in mice via leptin JAK2/IRS2 pathway.

Objective To assess the relationship between arterial stiffness and heart function in patients with hypertension using ultrasonography. Methods A total of 167 patients with hypertension and 165 controls were enrolled, and the parameters of arterial stiffness and heart function were measured and calculated. The results were analyzed and compared. Results The ratio of peak early-diastolic mitral orifice flow velocity and peak early-diastolic mitral annular velocity in left ventricular posterior wall (E/e), and Tei index were significantly higher in hypertension group than in controls(E/e: 10.92±3.14 vs. 7.70 ±1.56, Teiindex: 0.58±0.13 vs. 0.45±0.09, both P＜0.05), but there was no significant difference in ejection fraction (EF) between the two groups. In hypertension group, the parameters of arterial stiffness including β value, pressure-strain elastic modulus (Ep), pulse wave velocity (PWVβ) and arterial compliance were 11.0±5.2, (172.6±83.8)kPa, (7.8±1.6) m/s and (0.6±0.2) mm2/ kPa. In control group, the corresponding data were 7.5±3.0, (97.1±45.4) kPa, (5.9±1.3) m/s and (0.8±0.3) mm2/kPa. There were significant differences between the two groups (all P＜0.05). The E/e was positively correlated with Ep and PWVβ(γ=0.316 and 0.296, both P＜0.05). The Tei index was positively correlated with Ep,augmentation index (AI) and PWVβ(γ=0.278, 0.300 and 0.323, P＜0.05-0.01). There was no significant correlation between EF and arterial stiffness. Conclusions The arterial stiffness and damage of heart function can result from hypertension. The arterial stiffness can be one of monitoring indexes for the heart function damage in early time.

Objective To study the relationship between the expression of eostimulating factor B7-H4 in patients with primary biliary cirrhosis (PBC) and the pathogenesis of PBC. Methods The expression of B7-H4 mRNA on peripheral blood mononuclear cell (PBMC) of 65 patients with PBC was tested by real-time PCR. Serum levels of IL-2 were assayed by ELISA. CD4+, CD8+ T lymphocytes expression level and B7-H4 expression rate before and after activation were measured by three-color flow cytometry (FCM). Re-sults (1) Expression of B7-H4 mRNA and BT-H4 percentage in PBC group were significantly lower than that in none-PBC group and healthy controls(P<0.01);(2)After 72 h activation, the percentage of CD4+, CD8+, and CD4+ CD8+T lymphoeytes and serum levels of IL-2 decreased (P<0.05), and the percentage of CD4+, CD4+ CD8+T lymphocytes and serum levels of IL-2 were significantly higher than that of none-PBC group and healthy controls(P<0.01);(3)Levels of alanine aminotransferase(ALT), aspartate amin-otransferase(AST), alkaline phosphatase(ALP) and γ-glutamyl transpeptidase(GGT) of patients with posi-tive anti-mitochondrial antibody(AMA)-M2 rose. There was no significant difference of B7-H4 expressions on T cells between patients either with or without AMA-M2 antibody. Conclusion The costimulating factor B7-H4 can express on T lymphocytes which is activated by phytohemagglatinin(PHA) aad plays a negative role on T cells responses.

Objective To observe the expression and influence of SH2-B in hepatocarcinoma,and to investigate the molecular mechanisms of canceration in hepatocarcinoma.Methods By using SABC imunohis-tochemistry,the expressions of SH2-B were detected in 27 cases of hepatitis,29 cases of hepatocirrhosis and 47 cases of hepatocarcinoma.Hepatocarcinoma cell (HepG)2 with a low-expressed SH2-B was selected using immunofluorescence assay.There were 3 groups:the transfected group (transfected with pcDNA3.1 -SH2-B), the vector group (transfected with pcDNA3.1 )and the blank group (without transfection).After gene transfec-tion,SH2-B expression was detected by Western blotting;cell proliferation was measured by MTT assay;cell colony was counted by colony formation test;and cell cycle was analyzed by flowcy tometer.Results The posi-tive rate of SH2-B in hepatocarcinoma (95.7%)was significantly higher than 55.2% in hepatocirrhosis (χ2 =1 8.64,P <0.01 )and 25.9% in hepatitis (χ2 =40.01 ,P <0.01 ).After being transfected with pcDNA 3.1 -SH2-B,SH2-B expression dramatically increased in HepG2 cells.After cultured for 48 h,the average optical density value of the transfected group was 1 .1 2 ±0.1 9,obviously higher than 0.45 ±0.1 1 in the vector group (t =-31 .55,P <0.01 ),which indicated that cells proliferation was significantly enhanced after being trans-fected with SH2-B.The cell colony numbers of the transfected group was 1 66 ±1 4,significantly higher than
82 ±8 in the vector group (t =-20.33,P <0.01 )and 78 ±9 in the blank group (t =-1 9.64,P <0.01 ), which indicated that the cell colony numbers increased after being transfected with SH2-B.The S stage cells of the transfected group was (45.7 ±5.8)%,significantly higher than (1 9.4 ±4.7)% in the vector group (t =-20.33,P <0.01 )and (20.5 ±5.1 )% in the blank group (t =-34.69,P <0.01 ),which indicated that SH2-B could enhance promote cell cycle of HepG2 cells.Conclusion The expression of SH2-B in hepatocar-cinoma is high,and it may be involved in the canceration of hepatocarcinoma though promoting cell cycle,cell proliferation and cell transformation.