OBJECTIVE:To prepare nattokinase immunoliposomes and its lyophilized product and to evaluate its pharmaceutical quality. METHODS: Nattokinse liposomes were prepared by film dispersion method, then the immunoliposomes were prepared by carbodiimide method coupled anti-human fibrin D-dimer monoclone antibody SZ-63 and lyophilized and evaluated about its pharmaceutical quality. RESULTS: Lyophilized immunoliposomes were multilamellar vesicles with its mean diameter, Zeta potentials at 251.6 nm, —34.6 mV, respectively. The lyophilized product of nattokinase immunoliposomes exhibited good appearance and satisfactory redispersibility, with its loss on drying at 14.30% and critical relative humidity at 45.66%. CONCLUSION: Nattokinase immunoliposomes and its lyophilized product have been prepared successfully.

Objective To survey the antimicrobial resistance of nosocomial Klebsiella Pneumoniae (Kpn) isolates. Methods All the 68 Kpn strains were isolated and collected from nosocomial infections during April 2002 to March 2003. The susceptivity of bacteria and the production of extended spectrum ?-lactamases (ESBLs) were determined by Kirby-Bauer disc diffusion test and phenotypic confirmatory testing, respectively. Results All 68 Kpn strains were 100% susceptible to Menopenem and Imipenem but resistant to 14 other antimicrobials to different degrees. The first five drugs of high resistant rate were ampicillin (100%), amoxycillin/clavulanic acid (79.4%), sulphamethoxazole/trimothoprim (67.6%), cefotaxime (58.8%), gentamycin (47.0%). There were 28 isolates producing ESBLs (41.2%), which showed much higher resistance to ?-lactam, aminoglycosides, quinolones and sulphamethoxazole/trimothoprim than the non-ESBLs-producing strains. Conclusion Nosocomial Kpn isolates were most multidrug resistant, of which ESBLs-producing strains showed a higher resistance and which may involve other resistant mechanisms.

ObjectiveTo evaluate biomechanical properties of transoralpharyngeal atlantoaxial reduction plate (TARP) prepared from magnesium alloy and titanium alloy for the atlantoaxial dislocation by using three-dimensional finite element analysis and to exam the feasibility of using magnesium alloy for preparation of TARP system so as to provide a theoretical basis for clinical surgery.MethodsA patient with typical atlantoaxial fracture dislocation was involved in the study,and received thin CT scan with clinically used titanium alloy TARP system for obtaining DICOM image data.Three-dimensional finite element analysis software was imported to simulate magnesium alloy and titanium alloy TARP systems for reduction and fixation.Then,stress changes of the atlas,axis,internal fixators and C2/3 zygapophysial joints were determined with three-dimensional finite element analysis and analyzed statistically.Results ( 1 ) The finite element model of atlantoaxial dislocation reduction and fixation had lifelike outline and good geometric similarity.There were 53 586 nodes and 180 784 units.(2) During the simulation of head in neutral position,the stress concentration region was C2/3 zygapophysial joints followed by the anterior arch,posterior arch and lateral mass of atlas respectively,and C2 vertebral arch again.( 3 )Magnesium alloy and titanium alloy TARP systems showed significant difference in stress distribution (P ＜0.05).Conclusions(1)The atlantoaxial model established according to its structure information on CT can be used for biomechanical experiments.(2) For the treatment of atlantoaxial dislocation using the existing titanium TARP system,maintaining the integrity of anterior and posterior arch of atlas and confirming the bone fusion in lateral mass can better keep the stability of the atlantoaxis.After atlantoaxial fusion,the increased stress of the zygapophysial joints of the adjacent segments accelerates structural degeneration,which should be closely followed up.( 3 ) Magnesium alloy TARP system for fixation and reduction shows the fall in peak value of the stress concentration region,and improvement of the uniformity of stress distribution as compared with titanium alloy TARP.

Actins ; metabolism ; Adenoma, Pleomorphic ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Glial Fibrillary Acidic Protein ; metabolism ; Humans ; Infant ; Keratins ; metabolism ; Male ; Nasal Cavity ; pathology ; Neoplasm Recurrence, Local ; Nose Neoplasms ; metabolism ; pathology ; surgery ; Reoperation ; Vimentin ; metabolism

OBJECTIVE:To study the difference between the hydrophilic and hydrophobic fluoroquinolones(FQNLs)in?ducing resistant Klebsiella pneumoniae(Kpn)in vitro.METHODS:Hydrophilic ciprofloxacin(CIP)and hydrophobic sparfloxacin(SPFX)were used to induce FQNLs resistant mutants from a clinical susceptible isolate Kpn909with stepwise selection method,respectively,The susceptivity of bacteria to was determined by the standard method of two fold agar dilu?tion.RESULTS:The resistance of Kpn909to FQNLs was raised up gradually as FQNLs'concentration increased;Minimum inhibitory concentrations(MICs)of Kpn9098Selected by CIP at2?MIC(0.5mg/L)were16～32times higher than that of Kpn909,and showed resistant to ofloxacin(OFX),lomefloxacin(LMFX)and enofloxacin(ENX)with a MIC of8mg/L,16mg/L and8mg/L.Otherwise,SPFX-selected Kpn with a similar resistant level occurred at the concentration of8?MIC(1mg/L).The maximal selecting concentration of CIP and SPFX were128mg/L and64mg/L,and MIC of5FQNLs to the resistant mutants obtained at which were≥256mg/L and32～128mg/L,respectively.CONCLUSION:Both hydrophilic CIP and hydrophobic SPFX could induce Kpn the cross resistance to others FQNLs,but hydrophobic FQNLs may be superior to hydrophilic FQNLs to delay the resistance occurrence in Kpn.

Objective To investigate the mechanisms of Mieyou Decoction in the treatment of Hp-associated gastritis of spleen-stomach damp-heat syndrome. Methods Seventy BALB/c mice were randomly divided into control group, model group, high concentration of Mieyou Decoction group, low concentrations of Mieyou Decoction group, and gastric triad group, with 14 rats in each group. BALB/c mice of Hp-associated gastritis of spleen-stomach damp-heat syndrome models were established by composite factor. After the success of modeling and continuous 14-day administration, the expressions of TLR2, TLR4 protein, TLR2 mRNA, and TLR4 mRNA were detected by immunohistochemistry and qPCR. ELISA was used to detect the expressions of IL-6 and IL-8 in the serum. Results Compared with control group, the expressions of TLR2, TLR4 protein, mRNA, IL-6, and IL-8 in model group significantly increased (P<0.01);the expressions of TLR2, TLR4 protein, mRNA, IL-6, and IL-8 in high concentration of Mieyou Decoction group, low concentrations of Mieyou Decoction group, gastric triad group were lower than model group, with statistical significance (P<0.01);the expressions of TLR2, TLR4 protein, mRNA, IL-6, and IL-8 in high concentration of Mieyou Decoction group were higher than gastric triad group, but the differences were not statistically significant (P>0.05). Conclusion Mieyou Decoction may play a role in the treatment of Hp-associated gastritis of spleen-stomach damp-heat syndrome through intervention in the expressions of TLR2 and TLR4.

Objective To study the expressions of HSP70 and AQP4 in the H.Pylori-associated gastritis mice of Pi-Wei hygropyrexia syndrome;To investigate the mechanism of Mieyou Soup. Methods The mice were randomly divided into high concentration of Mieyou Soup group, low concentration of Mieyou Soup group, gastric triad group, model group and control group. BALB/c mice of H.Pylori-associated gastritis mice of Pi-Wei hygropyrexia syndrome model was established by composite factor. After modeling, the mice were administered for of continuous 14 days. The drug dosage of high concentration of Mieyou Soup group, low concentrations of Mieyou Soup group, and gastric triad group were 12.4, 6.2 g/kg, and 0.279 8 mg/kg, respectively. Western Blot was used to detect the expression of HSP70 protein, and immunohistochemistry was employed to detect the expression of AQP4 protein. Results Compared with control group, the expression of HSP70 and AQP4 in model group significantly increased (P<0.05);compared with the model group, the HSP70 in high concentration of Mieyou Soup group, low concentrations of Mieyou Soup group, gastric triad group increased, the AQP4 in high concentration of Mieyou Soup group, low concentrations of Mieyou Soup group, gastric triad group decreased, with statistical significance (P<0.01). Conclusion Mieyou Soup may play a role in treatment of H.Pylori-associated gastritis mice of Pi-Wei hygropyrexia syndrome by raising the expression of HSP70, and reducing the expression of AQP4 protein expression.

Objeetive To investigate the relationship among social avoidance and acceptance of disability in burn patients.Methods Totally 127 patients were investigated using Social Avoidance and Distress Scale (SADS),Acceptance of Disability Scale (AODS),demographic information questionnaire and disease related information sheet.Results The points of burn patients' SADS was (21.38±6.75),One-way ANOVA showed that gender,marital status,special parts burns,amputation affected social avoidance significantly.The total score and factors scores of acceptance of disability were all negatively related to the score of social avoidance.Regression analysis showed that acceptance of disability,head burns,gender were the independent risk factors of depression.Conclusions Acceptance of disability were negatively related to social avoidance; Nurse can help them accept the reality of disability,develop the confidence to partici-pate in social communication,and improve the social adaptability.

Objective To investigate the developmental feasibility of early human fetal testes (<3 months) using xenografting technique and to acquire an accessible donor derivation that is essential for studying human germ cell development. Methods Nine testes from 10-13 weeks aborted fetus were grafted under the back skin of 6 castrated nude mice. Grafts were collected at different time point according to the growth of the donor tissues and the health condition of the recipients. Morphological and histological analyses were performed for the observation of the development of grafted immature testicular tissues. Results The mass of grafts was increased from about 5-7mg to 84.1mg (the biggest). Six of 9 testes were to be in developing. Histological observations showed a significant expansion of seminiferous tubules from (44.26±3.14)μm to (77.69±7.47)μm. Cells dispersedly distributed in seminiferous cords at the time of grafting migrated towards the basal part of seminiferous epithelium. Some germ cells with spermatogonium-like characteristics located on the basement membrane. Sertoli cells were in stages from immature into matured with abundant cytoplasm which were orderly arranged around spermatogonia forming a niche-like structure. Conclusion Testes from early aborted human fetus grafted under the back skin of castrated nude mice showed further development and therefore could be used as an easier accessible donor tissues for the investigation of human spermatogenetic mechanism.

BACKGROUND:C2 transpedicle screw fixation for Hangman fractures has been paid more attention due to reliability and no loss of physiological function.However,there are lacks of biomechanical evidences for indication treatment because the fixation is single segmental.OBJECTIVE:To investigate the biomechanical stability of C2 transpedicle screw fixation for Hangman fractures.DESIGN,TIME and SEITING:This was a contrast study which was performed at the General Key Laboratory of Biomechanics,First Military Medical University of Chinese PLA from May to August 2004.MATERIALS:AO-universal titanium alloy transpedicle screw of 18 25 mm in length and 3.5 mm in diameter was adopted in this study.Six fresh C1-C4 cervical vetebrae samples were ordiually made into type Ⅰ,ⅡA,and Ⅱ Hangman fracture models.METHODS:After transpedicle screw fixation.Hangman fracture models were measured by non-destroyed style with spinal anterior flexion/posterior extension,left/right lateral curvature,and left/right axial direction.Loading/unlonding circulation was performed three times during each testing.Kinematics indicators were measured on the 3rd circulation.MAIN OUTCOME MEASURES:Spinal motor images at zero load and maximal load were obtained with laser photoscanning(0.1% in precision),and the corresponding systematic software was adopted to calculate 3D range of movement.RESULTS:The relative stability of type Ⅰ Hangman fracture models after C2 transpedicle screw fixation was 100.62%(inflexion),96.91%(posterior extension),99.19%(lateral curvature),and 97.12%(rotation)as compared to control group (P＞0.05).The relative stability of type Ⅱ Hangman fracture models after C2 transpedicle screw fixation was 47.84%(inflexion),21.29%(posterior extension),65.98%(lateral curvature),and 41.69%(rotation)as compared to control group (P＜0.05).CONCLUSION:Biochemical evaluation suggests that type Ⅰ and Ⅱ A Hangman fractures do fit for C2 transpedicle screw fixation,and the fixation may generate well physiological fixation or stability.However,stability of type Ⅱ Hangman fracture is poor,so it is not suitably adopted single transpedicle screw fixation.