Objective:To test the effects of propofol on intracellular calcium free concentration ([Ca~(2+)]i) and inositol 1,4,5-triphosphate (IP_3) biological synthesis induced by norepinephrine (NE) and 5-hydroxytryptamine (5-HT) in aortic smooth muscle cells (ASMC)of rats for the mechanism of relaxtion of propofol on vascular smooth muscle.Method: Using the flurospectrophotometry and Fura-2/AM loading method,the changes of [Ca~(2+)]i levels in primary culture ASMC were measured,and using the specific, IP_3 assay system and isotope radioactive protein binding experiment IP_3 production levels in aortic smooth muscle were measured. Result:The baselines of [Ca~(2+)]i was decreased when primary culture ASMC was pretreated with propofol in 72 hours. Propofol inhibited [Ca~(2+)]i increase induced by NE and 5-HT in dose-dependent way. With extracellular calcium free or calcium channel blocker(Verapamil),inhibition of propofol on NE and 5-HT increasing [Ca~(2+)]i levels were decreased,but could not be cancelled. Propofol depressed IP_3 biological synthesis induced by NE and 5-HT in dose-dependent way. Conclusion:Relaxation of propofol on aortic smooth muscle is closely related to inhibiting IP_3- induced calcium release to decrease intracellular calcium concentration.

Objective　To observe the therapeutic effect of combination of penetrating keratoplasty, cataract extraction and intraocular lenses implantation.Methods　Penetrating keratoplasty was performed simultaneously with cataract extraction and intraocular lenses implantation on 134 cases. Results　One hundred and twenty cases were recorded after following up for 0.5～12 years. Ninety-nine cases (82.5%)of the corneas remained clear. Twenty-one cases (17.5%)of the corneas failed.Ninety-two cases (76.7%)achieved a better visual acuity postoperatively.Eighty-nine eyes(74.2%)were not blind any longer. Conclusion　The combination of penetrating keratoplasty, cataract extraction and intraocular lenses implantation offers advantages of rapid and better rehabilitation of visual acuity with low complication rate.

Objective To measure and assess CT perfusion value for peri-pancreatic metastatic lymph node by using multiple spiral CT (MSCT) with body perfusion software package. Methods The MSCT perfusion imaging was performed for peri-pancreatic metastatic lymph nodes and muscle on a multi-section CT scanner (SOMATOM Sensation Cardiac 64). 4 x 5 mm collimation, 120 kV, 60mA. Contrast injection was done with 40 ml nonionic contrast agent (300 mg l/ml), at a flow rate of 4.0 ml/s, and 5 seconds delay, and data acquisition lasted for 40 seconds. The mean blood flow (BF) were measured and analyzed in patients with pathologically proven peri-pancreatic metastatic lymph nodes(n=29)and hyperplastic lymph nodes(n=15) on work station using body perfusion software (Siemens) with deconvolution method. Results The mean BF in peri-pancreatic metastatic lymph nodes were (53.63±18.82) ml·min-1·100 ml-1, in hyperplastic lymph nodes were 29.78±7.52 ml·min-1·100 ml-1, the difference was significant (P<0.001). Conclusions Perfusion imaging of MSCT was useful in differentiation between peri-pancreatic metastatic lymph nodes and hyperplastic lymph nodes.

Objective To investigate the relationship between the dynamic changes of interleukin-1β (IL-1β) levels and severity and complications of patients with multiple trauma at the early stage.Methods Among 97 patients with multiple trauma in Emergency Department of Shanghai Jiao Tong University Affiliated Sixth People's Hospital between August 2015 and May 2016,12 patients were excluded as follows,(1) with burns or chemical injuries;(2) pregnancy or menopausal women;(3) had bacterial infection a week ago;(4) with chronic diseases.The other 85 patients with multiple traumas were classified into three categories according to the injury severity score (ISS).That is,the slight group (22 cases,9≤ ISS ＜ 15),moderate group (35 cases,15 ≤ ISS ＜ 25) and severe group (28 cases,ISS ≥ 25).Their venous blood samples were collected at 6,12,24,48 and 72 hours after trauma respectively,and the serum IL-1 β levels were measured using a specific immunoluminometric assays.The basal conditions including age,the hospitalization days and so on among these three groups were compared via ANOVA.The mean IL-1 β levels at above time intervals among three groups were compared.Finally,the relationship between the peak concentration of IL-1β and injury severity and complications was analyzed by multiple Logistic regression.Results (1) As the increasing severity of trauma,the patients with longer days of hospitalization and higher rate of multiple organ dysfunction syndrome (MODS) (P ＜ 0.05).(2) The levels of IL-1 β in the moderate and severe groups were remarkably higher than those in the slight group (P ＜ 0.02).(3) The IL-1β levels in each group peaked at 6 hours after trauma and began to decline.(4) Multivariate logistic analysis showed that peak concentration of IL-1 β was still an independent predictor for injury severity (moderate group:odds ratio,1.21;95％ confidence interval:1.05-1.39,P =0.007;severe group:odds ratio,1.20;95％ confidence interval:1.03-1.40,P =0.019) and sepsis (odds ratio,1.28;95％ confidence interval:1.10-1.50,P =0.001),but had no significant association with MODS and trauma mortality even after controlling other risk factors.Conclusions The serum IL-1β at 6 hours after injury could be used as an early effective indicator to evaluate the injury severity and infectionrelated complications in patients with multiple trauma.