Objective To investigate the effect of Notch1 and Jagged1 on the growth of prostate cancer PC3 cells and the regulation of Jagged1 expression by its receptor Notch1 in PC3. Methods Notch1 and Jagged1 expression were inhibited by siRNA interference. The growth rate of PC3 cells was measured by MTT. Notch1 expression was inhibited by siRNA interference and promoted by transfection of Notch1 cDNA. The changes of Notch1 and Jagged1 protein and mRNA levels were measured by Western blot and Real-time RCR. Results The growth of PC3 cells decreased after inhibiting Notch1 and Jagged1 expression. Jagged1 protein level decreased after inhibiting Notch1 expression and increased after over-expressing Notch1. Moreover, the change of Jagged1 protein level was discordant with the situation of mRNA. Conclusion In PC3 cells, Notch1 and Jagged1 are important to cell growth. Notch1 may regulate Jagged1 expression.

Objective To elucidates the regulation of Notch1 activity by Rab5 which controls endosome fusion.Methods Rab5 expression of BxPC3 cells were inhibited by siRNA interference,the changes of Notch ICD protein were measured by Western blot.We use Wortmannin and LY294002 which inhibit the acticity of Phosphatidylinositol(PI) 3-kinases to investigate Notch ICD protein level.Results After inhibiting Rab5 expression or the activity of Phosphatidylinositol(PI) 3-kinases,Notch ICD protein level and the growth of BxPC3 cells decreased.Conclusion In BxPC3 cells,Rab5 and Phosphatidylinositol(PI) 3-kinases are important to regulate Notch1 activity and the activation of Notch is dependent on endocytosis.

OBJECTIVETo investigate the etiology and treatment of sympathetic cervical spondylosis (SCS).

METHODSTwenty patients who with SCS had undergone operations for sympathetic cervical spondylosis were reviewed retrospectively from 1988 to 2000. Lateral views in flexion and extension of pre- and postoperative cervical X-ray were analyzed to quantify cervical instability.

RESULTSCervical instability was detected at one level in seven patients, two levels in ten patients, three levels in three. Cervical instability mainly occurred at C(3)-C(4) and C(4)-C(5). Cervical epidural block had a short time effect in the greater part of patients. Cervical discectomy and fusion at unstable segment was carried out in all 20 cases. The effective rate was 90%.

CONCLUSIONSCervical instability at C(3)-C(4) or C(4)-C(5) maybe an important factor in the etiology of sympathetic cervical spondylosis. Cervical epidural block may provide diagnostic information. Anterior cervical fusion were effective to treat sympathetic cervical spondylosis.

Adult ; Cervical Vertebrae ; surgery ; Female ; Follow-Up Studies ; Humans ; Joint Instability ; complications ; surgery ; Male ; Middle Aged ; Retrospective Studies ; Spinal Fusion ; methods ; Spondylolysis ; etiology ; surgery

Objective To find the potential risk factors for pancreatic fistula after distal pancreatectomy.Methods Clinical data of 125 cases of consecutive distal pancreatectomy in Ningbo Lihuili Hospital from January 2006 to June 2013 were retrospectively analyzed.Results In all the 125 patients with distal pancreatectomy,pancreatic fistula was the most common surgical complication (43/125,34.4％),including 27 cases of grade A fistula,16 cases of grade B pancreatic fistula.Multivariate analysis showed that the texture of the pancreas and main pancreatic duct ligation were the independent risk factors for pancreatic fistula (all P ＜ 0.05).Conclusions Pancreatic fistula was the most common surgical complication of distal pancreatectomy.The texture of the pancreas and main pancreatic duct ligation effect the occurrence of postoperative pancreatic fistula.

Objective To investigate the efficacy of enteral nutrition containing glutamine on improving blood lipids and immune parameters in elderly patients with gastrointestinal cancer.Methods 98 cases of elderly patients with gastrointestinal cancer were randomly divided into observation group(n=5 1)and control group (n=47).The control group was additionally given conventional enteral nutrition,and the observation group was additionally given enteral nutrition containing glutamine.The levels of albumin (ALB),tumor necrosis factor (TNF),indicators of cellular immunity,indicators of humoral immune function and blood lipid,before and after operation,were observed in the two groups.Results 9 days after operation,the levels of ALB and total cholesterol,per-centage of CD8 + cells were lower than those in the control group,and levels of TFN,IgA,triacylglycerol,low density lipoprotein cholesterin,percentage of CD4 + cells and CD4/CD8 ratio were higher than those in the control group,and have significant differ-ences (P <0.05).While,there was no statistically significant difference of the percentage of CD3 cells between the groups(P >0.05).Conclusion Enteral nutrition containing glutamine can significantly improve blood lipids and immune function in elderly pa-tients with gastrointestinal cancer,which may have important clinical research value and be worthy of further application.