Objective To study the application of complex surgical therapy of severe hepatic trauma and the flow line reasonable.Method To study the methods and reasonable process of complex surgical treatment of severe hepatic trauma pre-hospital or hospital treatment of 46 patients during the past 15 years.Results The time of sending to hospital was delayed.Patient has severe hepatic trauma or associated injuries.Patient can not be diagnosed definitely against time.Linear correlation was demonstrated between the three upon and shock (r=0.55,t=3.38,P

Objective In order to avoid potential injuries imposed to human body,it could be feasible to use the musculoskeletal models which can be reconstructed from the cadaver color cryosection(CCC)images,computerized tomography(CT)images,magnetic resonance(MR)images or other images to analyze the dynamic properties of muscles in vivo during human movement.Mothod We reconstruct the lower limb musculoskeletal model and define the uniform ioint coordinate system(JCS)on the model and the subject.The coordinate transformation of the muscle attachment points both on the model and the subject is described in detail.Results The length and the moment arm of the biceps femoris(short head)during knee flexion are calculated and analyzed.Conclusion This method plays an important role in improving the kinematics and dynamic simulation and the muscle force estimation.

OBJECTIVE:To optimize the extraction technics of liver-strengthening cholagogue oral preparation.METHODS:The effects of the four factors-the quantity of the added water,the decoction time,the decoction times and the alcohol precipitation concentration on the extraction results were determined with content of total flavonoids taken as index.RESULTS:The best extracting condition was the following,the amount of the added water was 10 times that of the medicinal materials,the decoction duration was 60min,the alcohol precipitation concentration was 50%and the decoction was carried out twice.CONCLUSION:The preparation under this technics is of high clarity and stable contents.

Objective To make clear the patients in minimally invasive surgery through explo-ring effects of pneumoperitoneum and pulmonary infection on the airway pressure of patients with dif-ferent body mass index (BMI)under general anesthesia.Methods A total of 849 cases of patients with trachea cannula in pneumoperitoneum surgery inr general anesthesia under different position were studied.To observe the changes of airway pressure and the ratio of pulmonary infection within one week of patients in general anesthesia.Propofol,Remifentanil and Atracrium were used in general an-esthesia.BIS and TOF were used to detect the degree of muscle relaxation.Results The airway pres-sure was increased obviously in patients of Head-down Tilt under same pneumoperitoneum pressure(P<0.05);the airway pressure was increased in patients with BMI>30 kg/m2 (P <0.05).There was no obvious increase in pulmonary infection rate in all patients.Conclusion Pneumoperitoneum could increase airway pressure and pulmonary infection of patients with low head position and BMI > 30 kg/m2 under same pneumoperitoneum pressure.Therefore,shorten the operation time and decreased pneumoperitoneum pressure could be used to prevent pulmonary infection.

Objective To study on the measurement of glycyl-proline dipeptidyl aminopeptidase (GPDA) in urine and its clinical application. Methods GPDA in urine was measured by continuously monitoring method using substrate. The assay conditions and interference factors were investigated. GPDA activities in urine specimens from 334 healthy persons, 55 diabetes mellitus patients and 36 hypertension patients were measured. The differences between the kidney injured and non-kidney injured groups were analyzed. Results The linearity of the method was up to 350 U/L. The intra CV and inter CV were 1.27% and 1.33% respectively. The GPDA activity in urine specimen was stable for 7 days at 4℃. There was no interference of bilirubin, glucose, vitamins, dimethylbiguanide and gliben-clamide. No significant interference was found by hemoglobin less than 500 mg/L. GPDA level in urine specimens of 334 healthy persons were (12.9?4.2) U/g?Cr. The GPDA levels of diabetes mellitus and hypertension groups combined with kidney injured were obviously higher than that of the control group and the non-kidney injured group ( P

Objective To explore the mechanism that Staphylococcus aureus(S.aureus) α-toxin(Hla) regulate miR-142 expression and inhibit macrophage phagocytosis.Methods BALB/C mice and RAW264.7 cells were infected with wild type S.aureus(WT S.aureus),Hla deletion S.aureus(△HlaS.aureus) or phosphate buffered saline(PBS),and the expression level of miR-142 of skin tissues and cells were detected.miR-142 mimics and inhibitor were then applied in the RAW264.7 culture to examine the effect on phagocytosis.Direct targeting of miR-142 on protein kinase Cα(PKCα) was assessed by luciferase assay and western blotting.Results miR-142 expression in △HlaS.aureus group were significantly down-regulated than WT S.aureus group(P<0.05).MiR-142 mimics inhibited RAW264.7 phagocytosis ability and inhibitor enhanced RAW264.7 phagocytosis ability.PKCα was directly targeted by miR-142.MiR-142 mimics significantly decreased the mRNA expression levels of PKCα in RAW264.7 cells(P<0.05).Conclusion Hla could promote miR-142 expression in macrophages.MiR-142 could inhibit macrophage phagocytosis through down-regulated PKCα.

Objective To construct a recombinant plasmid for expressing the HPV18 E2 gene and develop some materials for HPV18 related disease.Methods The E2 gene of HPV18 was amplified by PCR from PBR322-HPV18 and cloned into PIRES2-EGFP.The sequence of cloned HPV18E2 was confirmed by restriction analysis and DNA sequencing,then transfected into HeLa cells.E2 gene was detected by RT-PCR.Results HPV18 E2 gene fragment was amplified by PCR and ligated to PIRES2-EGFP,then transfected into HeLa cells successfully.The expression of green fluorescence cells was observed by fluorescence microscopy.Specific band could be seen in transfected cells by RT-PCR.Conclusion Recombinant plasmid PIRES2-EGFP is effectively expressed after being transfected into HeLa cells in vitro.

Objective To design and construct a controlled adenovirus vector in degradating by itself after induction for solving the problem of stimulating host immune and producing replication adenovirus and providing a secure exogenous gene vectors for clinical practice. Methods Based on the traditional adenovirus vector AdEasyTM system, we inserted the Cre gene which belongs to Cre-LoxP system into the downstream of Tet-On inducible expression system. Two LoxP sites were inserted into two sides of the shuttle plasmid′s right arm genome. Then, the full-length human insulin gene was inserted HindIII enzyme site. After the recombinant adenovirus infected the rat bone marrow-derived mesenchymal stem cells , fluorescent protein expression and insulin secretion were detected before or after induction by Dox. Results A new controlled recombinant adenovirus vector carrying human insulin gene was constructed successfully, and was named AdEasyN/INS. After the transfection of this new vector into QBI-293A cells and rat bone marrow mesenchymal stem cells , green fluorescent protein could be observed. After induction by Dox, both of the ratio of fluorescent cells/total cell and the levels of insulin significantly decreased. Conclusion Construction and preliminary validation of a controlledrecombinant adenovirus vector carrying human insulin gene is constructed successfully , it could infect rat bone marrow mesenchymal stem cells, and degradate by itself after Dox induction, realize the controllability of exogenous gene carrier.

Artificial knee joint simulation test is an important form in the research and evaluation of prosthetic material and design. Natural knee joint could not be tested by conventional instruments because of complex motion and load in movement. Simulation test designed for artificial knee is needed. At present, two kinds of simulation, namely simplification method and complete simulation, are widely used. Complete simulation can be used for simultaneous evaluation of material and design of prosthesis, whereas simplification method is only useful in evaluating the material of prosthesis. In international standards, there are already two protocols for artificial knee joint experiment, namely load control and displacement control. This paper also reviews the evaluation criteria and measurement standards for artificial knee joint simulation test, and then envisages the researches in future.
Arthroplasty, Replacement, Knee ; instrumentation ; Computer Simulation ; Computer-Aided Design ; Equipment Failure Analysis ; methods ; Humans ; Knee Prosthesis ; Prosthesis Design ; methods

We investigated the effects and optimal treatment frequency of pulsed electromagnetic fields (PEMFs) on postmenopausal osteoporosis (PMO). A comparison was performed with the cyclical alendronate and a course of PEMFs in the treatment for postmenopausal osteoporosis on bone mineral density (BMD), pain intensity and balance function. There was no significant difference between the two groups on mean percentage changes from baseline of BMD within 24 weeks after random treatments (P > or = 0.05). However, at the ends of 48 weeks and 72 weeks, the BMD of the PEMFs group were significantly lower than that of the alendronate group (P < 0.05). No significant difference was detected between the two groups with regard to treatment effects on Visual Analogue Scale score, the Timed Up & Go Test and Berg Balance Scale score. Compared with cyclical alendronate, a course of PEMFs was as effective as alendronate in treating PMO for at least 24 weeks. So its optimal treatment frequency for PMO may be one course per six months.
Alendronate ; therapeutic use ; Bone Density ; Bone Density Conservation Agents ; therapeutic use ; Electromagnetic Fields ; Female ; Humans ; Magnetic Field Therapy ; Osteoporosis, Postmenopausal ; therapy