Objective To observe the role of methylprednisolone in treatment of brain injuries through comparing the changes of serum S 100B protein and neuron specific enolase (NSE) levels. Methods Seventy two rats with brain contusion made by frontoparietal bone windows plasty with extradural hitting were divided into three groups: control group ( n =32), normal group ( n =8) and treatment group ( n =32) that were subdivided into groups 1, 6, 12 and 24 hours after injury. The levels of S 100B protein and NSE were measured at different time points after hitting by ELISA. Results ①The levels of serum S 100B protein and NSE was (0.35?0.03) ?g/L and (8.35?1.01) ?g/L, respectively in normal group. The levels of serum S 100 B protein and NSE in control group and treatment group (6 24 hours post injury) were higher than those in normal group ( P

BACKGROUND: In recent researches the concentration of S100 proteins and neuron-specific enolase have been proved positively correlated with the degree of brain injury, and can be used for assessing the degree and prognosis of brain injury. But whether the level of serum S100 proteins and phosphopyruvate hydratase can predict the role of glucocorticosteroid in the treatment of CNS damage is unclear.OBJECTIVE: To observe the changes of serum S100 proteins and phosphopyruvate hydratase level, aiming to explore the role of methylprednisolone in the treatment of craniocerebral inju ryin rats.DESIGN: Randomized controlled study.SETTING: The First Affiliated Hospital of Sun Yat-sen University.MATERIALS: This study was carried out at the Neurological Research Institute of Guangzhou Medical College in September 2003. Totally 72 SD rats were enrolled in this study.METHODS: Totally 72 SD rats were randomly divided into three groups,namely normal group of 8 rats, comparison group and treatment group of 32 rats respectively, the latter two groups were then subdivided into post-trautablishment: Brain contusion and laceration was made in rats according to Feeney's method, rats in normal group were only subjected to craniotomy group, rats were given intraperitoneal injection of methylprednisolone by dosage of 30 mg/kg instantly after injury, which replace by physical saline of the same dosage in comparison group. Rats in normal group were not given intraperitoneal injection, blood specimen was obtained instantly after put to death by cutting off head; in comparison group and treatment group,blood sample was obtained from rat at post-traumatic 1, 6, 12 and 24 hours and centrifuged for collecting superuatant, the level of serum S100 proteins and phosphopyruvate hydratase was detected by using ELISA method.RESULTS: Totally 72 rats were enrolled in this experiment and all regroup was (0.35±0.029) μg/L. The difference of serum S100 proteins was not obvious between normal group and treatment group at post-traumatic 24 hours, but the level of S100 proteins in treatment group and comparison group was significantly higher than normal group (P ＜ 0.01 or P ＜ 0.05);moreover in contrast with comparison group, the level of S100 proteins was found obviously lower in treatment group at post-traumatic 6, 12 hours and hydratase was (8.35±1.01) μg/L in normal group, the difference of serum phosphopyruvate hydratase level between comparison group and treatment group was higher than normal group, displaying statistical significance at all post-traumatic time points (P ＜ 0.01), except for not obvious difference between comparison group at post-traumatic 24 hours and treatment group.While comparing to comparison group, the level of serum phosphopyruvate hydratase was found obviously lower in treatment group at post-traumatic 1,6 and 12 hours time point (P ＜ 0.01 or P ＜ 0.05).CONCLUSION: The level of serum S100 proteins and phosphopyruvate hydratase can be used as predictors for the degree of brain injury in rats, in addition methylprednisolone might exert therapeutic effect on traumatic brain.

Pancreatic fistula is a common complication after pancreaticoduodenectomy(PD),and other complications occurred secondary to it such as hemorrhage and severe abdominal infection are also the main cause of death after PD.Proper selection of anastomotic methods is essential to the success of PD.The most common anastomotic methods can be divided into pancreaticojejunostomy and pancreatogastrostomy,but the effects of these methods have always been controversial consistently.In this paper,the effects of pancreaticojejunostomy and pancreatogastrostomy in the prevention of postoperative pancreatic fistula were synthetically analyzed based on recent research results.

Objective To explore the clinical implications of MSCT and reconstruction technique of Budd-chiari syndrome diagnosis. Methods Hepatic vein and intrahepatic inferior vena cava vascular morphology were shown by 55 cases of Budd-chiari syndrome with confirmed by ultrasound and clinic in nearly two years, which used the 64-row MSCT exami- nation in upper abdominal and enhanced scan, and reconstruction techniques that is included MPR and MIP etc. Results The compression and narrow signs of hepatic vein and intrahepatic inferior vena cava can be seen by reconstruction imag- ing with post -processing techniques, at the same time, these phenomena that are varying degrees of cirrhosis, splenomegaly, ascites, and esophageal varices can be displayed by Budd-chiari syndrome imaging in plain and enhanced CT images. Conclusion MSCT reconstruction techniques can be used to manifest clearly the appearance of hepatic vein and inferior vena cava, and have important diagnostic value and clinical significance.

Objective To discuss 64-slice CT three-dimensional reconstruction (3D) and MPR (MPR) in the application of the nasal bone fracture. Methods 102 patients with recent nasal fracture in our hospital underwent 64-slice CT scan axial thin spiral. Nasal fracture imaging was observed using workstations in the three-dimensional reconstruction (3D) and MPR (MPR). Results 102 cases of nasal bone fracture,dislocation fractures in 47 cases,non-fracture dislocation of the 55 cases,46 cases of bilateral nasal bone fracture,unilateral 22 cases(13 cases the left side of the right of nine cases),15 cases of fracture of the nasal septum,nasal bone fracture associated with maxillary The amount of bone fracture in 13 cases,only six cases of separation suture. All the nasal bone fractures 3D imaging and after the MPR can display three-dimensional fractures of the location,shape,type,degree of collapse and three-dimensional information. Conclusion 64-slice CT3D and MPR technology can improve the accuracy of diagnosis of the nasal bone fracture,and provide valuable information for clinicians in the choice of treatment program.

OBJECTIVE:To investigate the therapeutic efficacy and safety of Posterior pituitary injection combined with Ulina-station for injection in the treatment of severe lung contusion. METHODS:In retrospective study,60 patients with severe lung con-tusion in our hospital from Jan. 2015 to May 2016 were divided into control group and observation group according to therapy plan,with 30 cases in each group. Control group was given Ulinastation for injection 100 thousand U+0.9% Sodium chloride injec-tion 100 mL,ivgtt,bid. Observation group was additionally given Posterior pituitary injection 6 U+0.9% Sodium chloride injection 49 mL,intravenous pumping (initial rate was 0.008 U/min,adjusted to ≤0.04 U/min),bid,on the basis of control group. Both groups were treated for 1 week. The respiratory frequency,simple score of pulmonary contusion,chest X-ray score,the levels of arterial blood gas indexes(PaO2,PaCO2,SaO2,PO2/FiO2)and inflammation indexes(IL-2,IL-6,IL-10,hs-CRP,TNF-α)before and after treatment as well as clinical efficacy were observed in 2 groups. The occurrence of ADR was recorded. RESULTS:Before treatment,there was no statistical significance in respiratory frequency,simple score of pulmonary contusion,chest X-ray score, the levels of arterial blood gas index or inflammation indexes between 2 groups(P>0.05). After treatment,respiratory frequency, simple score of pulmonary contusion,chest X-ray score,and the levels of IL-6,hs-CRP,TNF-αin 2 groups were decreased signif-icantly,and the observation group was significantly lower than the control group,with statistical significance(P<0.05). The lev-els of PaO2,PaCO2,SaO2,PO2/FiO2,IL-2 and IL-10 in 2 groups were increased significantly,and the observation group was sig-nificantly higher than the control group,with statistical significance (P<0.05). Total response rate of observation group (100%) was significantly higher than that of control group(86.67%),with statistical significance(P<0.05). The incidence of ADR in con-trol group(13.33%)was significantly higher than observation group(6.67%),with statistical significance(P<0.05). CONCLU-SIONS:Posterior pituitary injection combined with Ulinastatin for injection show good therapeutic efficacy for severe lung contu-sion and effectively inhibit inflammatory reaction with good safety.

Objective To evaluate the diagnostic value and technique advantage of 16-slice CT angiography(16SCTA) in aortic dissection.Methods 39 cases of aortic dissection underwent 16SCTA.The data were reconstructed by multiplanar reconstruction(MPR),curved planar reconstruction(CPR),volume rendering(VR),maximum intensity projection(MIP),virtual endoscopy(VE),and generally analyzed in combination with original axial images.Results According to DeBakey's classification,DeBakey's type Ⅰ in 5 cases,type Ⅱ in one case and type Ⅲ in 33 cases were founed in the 39 cases.16SCTA clearly showed that including the ture and false lumen(39 cases,100%),intimal flaps(39 cases,100%),intimal tear(25 cases,64.1%),and thrombus inside the false lumen(17 cases,43.6%).Conclusion 16SCTA may be as the first choice method in diagnosis of aoric dissection,and which is considered as having great value.

Objective To explore the clinical value of preparatory treatment using estradiol valerate and mifepristone before the curettage of the late small missed abortion.Methods One hundred and twenty patients with late small missed abortion were randomly divided into two groups:pretreated group(n =660) and control group(n =60).Women in the pretreated group were given 5 mg of Estradiol Valerate 3 times/day and 25 mg of Mifepristone twice/day for 3 days each before conducted curettage on the fourth day.While for the control group,curettage was done directly.The condition of operation and the occurrence of short-and long-term complications were compared between the two groups.Results Compared with the control group,the pretreated group had a significant shorter operation duration[(8.6±2.7) rnin vs.(10.5±3.4) min,t =3.390,P =0.001]and less blood lose during operation[(47.5±18.3) ml vs.(61.8±20.5) ml,t =4.031,P ＜ 0.001].In terms of complications,the rates of incomplete curettage[(0 vs 13.3％,x2 =6.563,P =0.010],artificial abortion syndrome(3.3 ％ vs 15.0％,x2 =4.904,P =0.027),the cervical canal adhesion/Asherman' s syndrome(0 vs 11.7％,x2 =5.461,P =0.019),and the vaginal bleeding duration[(7.5±2.7) days vs(8.7±3.4) days,t =2.141,P =0.034]in the pretreated group were significantly lower than those in the control group.The average recovery time of menstruation after operation in the pretreated patients was significantly shorter than that in the control group[(30.5±9.3) days vs.(35.5±7.4) days,t =3.259,P =0.002].Contusion Estradiol valerate and Mifepristone as a preparatory treatment before the operation can help reduce the occurrence of complications and side effects in the late small missed abortion curettage and is helpful for the patients' recovery,thus worth wide clinical application.

Porous inorganic materials are solid-state compounds with regular porous structure.crystal or amorphous,which are closely related to the biochemical processes and wide applied in industry and daily life.Porous inorganic materials are a new kind Of functional materials due to their intriguing molecular topologies and wide distribution range of internal pore size.They have attracted tremendous attention due to comprehensive potential applications in ion exchange.selective adsorption.and catalysiS.This paper reviews researches and prospects of the applications of porous inorganic materials in the field of biology and medicine recently.Applications of porous inorganic materials in the field of biology and medicine mostly include the enzyme immobilizing,enzyme simulation. bioiogical sensors,controlled release drug carrier,antibacterial and auxiliary of anticancer drugs,etc.

BACKGROUND:Tissue and cellimplantation entails high-quality seed cells. In order to satisfy this requirement, it is crucial to produce adequate wel-conditioned, high-purity and strong proliferation ability bone marrow-derived mesenchymal stem cells.
OBJECTIVE:To establish a simple, rapid and effective in vitro isolation and culture method of bone marrow-derived mesenchymal stem cells, and to define the biological features of bone marrow mesenchymal stem cells.
METHODS:Rat bone marrow mesenchymal stem cells were isolated from the bilateral tibial and femoral bones by the method of whole bone marrow, then purified and passaged by attachment method. The morphology and features of bone marrow mesenchymal stem cells were observed, the growth curve was drawn and the cellsurface antigen was detected by flow cytometry. The bone marrow mesenchymal stem cells were induced to differentiate along the osteogenic, chondrogenic and adipogenic lineages.
RESULTS AND CONCLUSION:Bone marrow mesenchymal stem cells isolated by the whole bone marrow adherence method grew vigorously and were highly purified. The cultured cells were spindle-shaped. The growth curve was S-shaped and the population doubling time was 29 hours. The cells stil maintained a strong proliferative capacity after they were passaged for 10 generations. The surface markers such as CD44, CD29, CD90 were positive, while CD45, CD34, CD11b were negative. At the third passage, bone marrow mesenchymal stem cells were induced to differentiate along the osteogenic, chondrogenic and adipogenic lineages, respectively. Fol owing induction, Alizarin red staining, alkaline phosphatase staining, von-kossa mineralized nodules staining, toluidine blue staining, and oil red O staining were al positive. This shows that the whole bone marrow adherence method is a simple and reliable method for the in vitro isolation, culture and proliferation of bone marrow mesenchymal stem cells. Moreover, they have multi-lineage differentiation capacity under different inducers. The third passage bone marrow mesenchymal stem cells have the highest biological activity and can act as the ideal seed cells for subsequent experiments.