Objective To compare the effects of 0.9% NaCl (normal saline, NS), 10% hydroxyethyl starch (HES, 200/0.5) and hypertonic-hyperoncotic solution (HHS, 7.5% NaCl-10% HES 1:1) on cerebral extracellular excitatory amino acids (EAA) and inhibitory amino acids (IAA) in a rat model of traumatic head injury (THI) combined with acute hemorrhagic shock (AHS). Methods Nineteen healthy adult male SD rats weighing 300-350 g were randomized into 3 groups: NS group (n = 7); HES group ( n = 6) and HHS group ( n = 6). THI was produced by modified Feeney method (a 20g weight drops from a height of 40 cm on the parietal region) and AHS was induced by modified Wiggers method (Blood was removed from femoral artery and MAP was maintained at 40 mm Hg for 1 hour). Fluid resuscitation was started at 1 hour of AHS with 0.9% NS (3 times the volume of the removed whole blood) or 10% HES (in a one to one ratio) or HHS 4 ml?kg-1 administered over 15 min. The extracellular fluid of injured brain tissue was collected using intracerebral microdialysis before head injury (baseline) during THI + AHS (1h) and resuscitatin (2h) for determination of the levels of EAA (glutamate, aspartate) and IAA (glycine, GABA, taurine) by HPLC.Results The 5 amino acids were significantly increased during THI + AHS as compared with their baseline values. Glutamate level was further increased during resuscitation with NS. GABA and taurine concentrations were maintained at high level during resuscitation with HES or HHS. The increase in glutamate was inhibited by resuscitation with HES and the increase in glutamate, aspartate and glycine were inhibited by HHS. Conclusions In a rat model of THI combined with AHS, resuscitation with NS can increase cerebral extracellular EAA. Both HES and HHS resuscitation can inhibit the increase in cerebral extracellulaar EAA and HHS is more effective.

0 05) HR in group A was faster than that in group B at T 3 (P

Pharmacokinetic analysis has attracted more and more attentions in the research field of bioactive natural product. However, there is limited study on the pharmacokinetics of polysaccharides. This paper focused on the research progresses of pharmacokinetics of polysaccharide, summarized the applications of chromatography, isotope labeling method, spectrophotometry, fluorospectrophotometry and biological assay in the analysis of polysaccharide pharmacokinetics, elucidated the behaviors of absorption, distribution, degradation and excretion of polysaccharide in experimental animals, and revealed the effects of physicochemical characteristic, administration dose and route on the pharmacokinetic properties of polysaccharide, which could be served as a reference for the related works.

[Objective]To observe the bone repairing efficacy of large segmental femur defects in rabbits with calcium phosphate cement(CPC)combined with bone morphogenetic protein(BMP)and massive bone allograft,which may benefit the clinical application of large segmental bone allograft transplantation.[Method]Fifty-four New Zealand white rabbits were divided into three groups and a 2 cm femur defect was created on one side of each rabbit,followed by implantation with:CPC combined with BMP and massive bone allograft(Group A),bone allograft only(Group B)and autograft transplantation(Group C).Intramedullary nails with a 3 mm diameter fixed all the grafts transplanted.The bone defect repair efficacy was evaluated by radiology and histology exam at 4,8 and 12 weeks after operation.[Result]The bone reparation capacities of allograft with CPC/BMP complex was better than that of the allograft alone after 4 ~8 weeks of transplantation,which were similar to the result of autograft transplantation.Complete bone union was achieved for all the groups after 12 weeks of operation,with better bone remodeling for group A and group C transplantation.The healing process of CPC/BMP combined with allograft transplantation was featured with large amount of bone callus forming surrounding the graft-host bone union area and the surface of allograft,which composd the extra cortical bone bridge and ingrowth(EBBI).Bone invasion,resorption as well as new bone genesis were seen in the surface of bone allograft at early stage,companied by expansion of Haversians canal,with more lanner cells,osteoblasts,osteoclasts and blood cells inside the allograft.CPC was slowly biodegraded with the bone graft resorption and new bone regeneration.[Conclusion]CPC combined with BMP can improve the bone reparation and substitution process in massive bone allograft transplantation for the treatment of large segmental bone defects.

Objective To investigate the pattern of outpatients traffic,orchestra service resources,and optimize service provision,for a harmonized outpatient service.Methods A baseline survey was made at the outpatient department in 30 days(six hours per day,7:00-11:00,and 13:00-15:00).On such basis,data of the hospital's HIS system within the last five years were called into play for statistics analysis and simulation test,for the purpose of shift scheduling and resources allocation optimization.Results This study discovered each January-February as the valley of clinic visits and each July-August as the peak.52-week data analysis of a year found that the days of daily registrations between 4000-5000 are up to 163 days,those over 5000 are up to 86 days,of which Mondays with over 5000 registrations are up to 35 days.Each Monday is found to be a peak of outpatient visits,with significant drop during Saturdays and Sundays; daily registrations peak between 7:00-10:00 in the morning,while the traffic rises again during 13:00-14:00 in the afternoon,yet up to 26 ％of the morning peak only.Conclusion Statistics analysis of the outpatient service and emergency service at the outpatient department can help identify their patterns of operations,for effective improvement of service provision,alleviation of peak hour workload,shorten patient waiting time and better patient satisfaction.

(0.05)). (Conclusions) PFC and serum TNF-? ,NO could be early observation indicators of acute rejection in minipig pancreas transplatation,and should have important significance in the diagnosis of acute rejection.

Objective To explore the classification of contrecoup orbital wall fractures, the mechanism of their formation and their identification in forensic practice. Method Forty-Two eases of contrecoup orbital wall fraeture were reviewed and studied. Each case has clear history of injury and both eyes have been clinically checked and CT scan performed. Results The contrecoup orbital wall fracture amounts up to 6.2% among eye socket wall fractures. Forty-two cases with home lateral injuries showed eyeball blunt contusion, 18 of them had retina concussion, 15 eyes had diplopia, no fracture on the orbital walls of that side were found by CT scanner. The 42 eyes on the opposite side of the injuries did not show eyeball contusion or retina concussion, but 10 eyes had diplopia and the orbital internal wall fractures were found in all cased by CT scanner. All 84 eyes of these eases had decreased of blurring of vision. Conclusion The main criteria for diagnosing contrecoup orbital wail, fracture is the found of head trauma with home lateral eyeball blant injury and orbital wall fracture at the opposite side proven by CT scanner and also some degree of injury in the eyeball on that side. The damage was assessed to be of minor injury.

Objective To study the mechanics of improved memory alloy fixators for salvage of periprosthetic femoral fracture (PFF) after hip arthroplasty in the elderly.Methods Thirty countrymen fresh cadaveric femurs with no pathological defect,fracture,deformity or tumor were randomly divided into experimental group and control group with 15 femurs in each according to the random number table.A model of Vancouver type B1 periprosthetic femoral fracture following hip arthroplasty was induced.The fracture was treated with modified memory alloy embracing fixators in experimental group;instead general memory alloy embracing fixators in control group.All specimens were tested biomechanically.Results Under the same mechanical loading,the two groups showed respective 30％ and 48％ maximum differences in stress value and displacement.Results in three-point bending test did not differ significantly between the two groups (P ＞ 0.05),but there were significant differences in axial compression and torsion test (P ＜ 0.05 or 0.01).Conclusion The improved memory alloy embracing fixators present better resistance to compression and torsion compared to the general fixators.

OBJECTIVE To find out the relationship between mucoepidermoid carcinoma and Human papillomavirus (HPV) infection.METHODS Nested polymerase chain reaction (Nested PCR) was adapted to detect HPV DNA from 51 tissues of mucoepidermoid carcinoma using consensus primers, 9 tissues of chronic parotitis were as control.RESULTS HPV DNA was detected in 37 of total 51 mucoepidermoid carcinoma tissues, the detection rate was up to 72.5%, comparatively, it was 22.2% (2 of 9) in chronic parotitis tissues. The HPV DNA detection rate of mucoepidermoid carcinoma tissues was statistically higher than that of chronic parotitis tissues (χ2=8.517, P=0.004).CONCLUSION The results suggested that the HPV infection may cause mucoepidermoid carcinoma.

The treatment of total avulsion of the hand is somewhat difficult and the result usually not satisfactory. Four cases of such patients were treated from 1983 to 1987. After routine debridement, digital nerves and its surrounding adipose tissue were preserved. An "S" shape skin flap was designed an raised in the contralateral upper abdominal quadrant to cover the injured hand like a bag, so that both sides of the hand were covered. The donor area (12cm2) was directly sutured. Nerve endings might grow into the flaps because of the preservation of digital nerves. Three patients were followed-up for 2 to 6 years, the injured hands regained good pain sensation as well as stereognostic and temperatuer sensations. The function of the hand is satisfactory, but the flap looked bulky and multiple plastic operations were necessary to seperate the fingers.