Objective To study retrospectively the efficacy and complications of different surgery approaches used to treat primary spinal tumors and to discuss the surgical strategy in treating them. Methods 135 patients with primary spinal tumors had been treated between July 1998 and July 2005. The following diagnoses were made based on histopathological findings: multiple myeloma in 25 patients, giant cell tumor in 17, neurofibroma or neurilemmoma in 23, chondrosarcoma in 7, osteoblastoma in 6, aneurysmal bone cyst in 4, lymphoma in 9, eosinophilic granuloma in 6, hemangioma in 15, osteosarcoma in 3, Ewing sarcoma in 5, and other different tumors in 15. Anterior approach and posterior approach was used in 73 cases and 31 cases respectively. Posterolateral approach was used in 13 cases and combination of anterior and posterior approach was used in 18 cases. Results Pain relief was obtained in 126 of the 135 patients(93.3%). Improved neurological function was seen in 86 of 92 patients who had suffered from impaired neurological function. No severe complications were found in the follow-up period. Cerebrospinal fluid leakage was observed in 11 patients, and which was successfully treated using antibiotics therapy and raising the foot of the bed. 3 patients suffered from stress ulcer after operation, but they recovered soon after blood transfusion and anti-acid treatment. Other complications included subcutaneous emphysema (in 3 patients), superficial wound infection (in 3 patients),nerve root injury (in 2 patients), implant loosening (in 2 patients), and neurological morbidity due to surgery (in 1 patient). Conclusion When single or two adjacent vertebrae are involved by spinal tumors such as giant cell tumor and chondrosarcoma, tumor resection should be performed through combination of anterior and posterior approach. Aggressive resection based on the Tomita or WBB staging system is the treatment most likely to achieve long-term local control.

Objective To investigate the expression of glioma-associated oncogene 2 (Gli2) in giant cell tumor of bone, and analyze the differential expression in the different classification of imaging and pathology and the recurrent diseases, to discuss its role and significance in the pathogenesis and prognosis of giant cell tumor of bone. Methods 46 cases of giant cell tumor of bone who received the primary treatment in Peking University Peopleˊs Hospital during Jan 2009 and Dec 2012 and had the full data of treatment and could be follow-up were collected. Among which there were 40 benign cases and 6 malignant cases. The expression of Gli2 in the different cases of giant cell tumor of bone were detected by immunohistochemistry and real-time PCR, and its effect on the prognosis of giant cell tumor of bone was analyzed. Results Immunohistochemistry revealed positive expression of Gli2 in giant cell tumor of bone. The positive rate of Gli2 in malignant cases was significantly higher than that in benign cases [100.0 % (6/6) vs 55.0 % (22/40), P=0.035], and only found increasing trend but no significant difference among recurrent cases (P=0.204). Results of real-time PCR indicated that Gli2 highly expressed in giant cell tumor of bone, and the increasing trend of expression in different pathological types, different image classifications and recurrent cases, but no statistical different were found (all P>0.05). The expression correlation analysis showed that the expression of Gli2 and PTHrP, and the expression of RANKL and OPG either had a significant correlation (both P< 0.05). Additionally the expression of PTHrP and RANKL had a moderate correlation (P<0.05). Conclusions The expression level of Gli2 is high in giant cell tumor of bone, and Gli2 may be involved in recurrence,metastasis and malignant transformation. Gli2 may effect the osteolytic process of giant cell tumor of bone by the regulation mechanism of Gli2-PTHrP-RANKL pathway.

Objective To explore the recurrence rate, the complications and functional status of 25 patients with grade I chondrosarcoma of long bones treated by intralesional curettage and electrocauterization, and to determine the feasibility and effi?cacy of this method for grade IA chondrosarcoma of long bones. Methods Twenty?five eligible patients treated in our hospital from May 2003 to December 2011, were collected in this study with a mean age of 49 years (range, 28-72 years). According to En?neking staging system, all the lesions were staged as IA. Patients received surgery of the lesion before were excluded. The involved bones were femur (13 patients), tibia (4 patients), and humerus (8 patients). During the operation, a large elliptical cortical window about the size of the longest dimension of the lesion was made to ensure the thorough exposure of the lesion and avoid inadequate curettage. The lesion was curettaged thoroughly after the cortical window was made, then the high speed bur drill was applied to clear away a thin layer of the reactive bone shell. After a thorough lavage of the cavity, electrocauterization was done alongside the cavity wall slowly twice. Allograft or artificial bone was used to fill in the cavity to enhance bone healing. If mechanical property of the long bone was endangered by the cortical window and the surgical procedure, plate and screws were applied to strengthen the bone to avoid post?operative fracture. Results All the 25 patients were followed up regularly. The period of follow?up was from 38 months to 142 months, with a mean time of 80 months. Calcification was observed clearly in all the lesions. The length of the le?sions varied from 4 cm to 11 cm, with an average length of 7 cm. Nineteen patients received a plate and screws fixation because the mechanical property of the affected bone, while the rest received no internal fixation. Deep infection occurred in 1 patient (4%, 1/25) two months after operation. Thorough debridement and packing of bone cement with antibiotics was done to control the infec?tion. The infection has been controlled till the latest follow?up at 62 months after operation. Local recurrence occurred in one pa?tient thirteen months after the primary operation. Tumor resection, mega?prosthesis replacement was applied to the patient. The pa?tient has been disease free till now for 67 months. Mean Musculoskeletal Tumor Society (MSTS) 93 functional score of all patients was 93%(range, 83%-100%). The five?year survival rate of these twenty?five patients was 100%. Conclusion Intralesional cu? rettage together with the application of high?speed bur drill and electrocauterization is an applicable method for grade I chondrosar?coma of long bones. The excellent functional result and low recurrence rate make it a favorable option for the selected cohort of pa?tients.

The optimum conditions of baicalin hydrolysis into baicalein by immobilized beta-glucosidase in a two-phase system was studied and the yield was observed. A two-phase system comprising of sodium acetate buffer and chloroform was determined by comparing the solubleness of baicalein in different solvents and partition coefficient of baicalein in related aqueous-organic two-phase system. beta-Glucosidase was immobilized by the crosslinking-embedding method using sodium alginate as the carrier The optimum reaction temperature, pH value, Michaelis constant, the thermal stability and pH stability were assayed. By comparing the yield of baicalin hydrolysis into baicalein by immobilized beta-glucosidase in two-phase system, the optimum reaction conditions were determined-the optimum reaction temperature, pH value and time were 50 degrees C, 5.0 and 10 h, respectively. The yield of baicalein was 85.28%. Compare with one-phase system, two-phase system had an advantage in reaction rate and yield.
Biocatalysis ; Drugs, Chinese Herbal ; chemistry ; Enzyme Stability ; Enzymes, Immobilized ; chemistry ; Flavanones ; chemistry ; Flavonoids ; chemistry ; Hydrolysis ; beta-Glucosidase ; chemistry

K21. The mean t1/2(?) was (2.7?0.4) h, Vd was about 11.18 L?kg-1.The C-T profile conformed to two compartment open model. The plasma Dau concentration-time curves showed a double-peak phenomenon in all dosages of all dogswhen dauricine was given by intragastric was.The tpeak(1) was (0.8?0.6) ～(1.2?0.5) h,tpeak(2) was (5.2?3.2) ～(6.5?1.9)h,Cmax(2) 0.05) and the AUC was increased in proportion.The drug is eliminated non-linearly when the dosage is above 50 mg?kg-1, the parameters t1/2(el),CL, AUC/X0 shows great difference (P

PURPOSE: To compare the results of posterior cruciate ligament reconstruction by open and arthroscopic method. MATERIALS AND METHODS: From 1995 to 1997, 18 reconstructions of posterior cruciate ligament were performed. Group 1 (open method) was composed of 9 cases and group 2 (arthroscopic method) was consisted of 9 cases. After 21-month follow-up, The two groups were compared by clinical and radiologic methods. RESULTS: Clinically, Lysholm knee score was 80 points in group 1 and 83 points in group 2 after operation. Post operative results by Hughston's criteria were good in 5, fair in 2 and poor in 2 cases (group 1) and good in 6, fair in 2 and poor in 1 cases (group 2). Radiologically, post operative average of posterior drawer stress view was 5.2 mm (group 1) and 5.0 mm (group 2). Almost double the operation time was taken to reconstruct posterior cruciate ligament by arthroscopic method than open method. There were technical errors in 2 cases performed by arthroscopic method. CONCLUSIONS: The results of both methods had no significant difference. We think that the reconstruction of PCL using patellar tendon by open method is a recommendable treatment method together with arthroscopic method, if the merits or demerits of both methods are considered carefully. But more long-term follow-up is necessary to compare the results of PCL reconstruction by open and arthroscopic methods.
Follow-Up Studies ; Knee ; Patellar Ligament ; Posterior Cruciate Ligament

To discuss the influence of dexamethasion on lL-1β and TNF - α expression in suture - induced rabbit corneal neovascularization ( CNV ) and analyze the potential mechanism.
●METHODS: For 43 healthy rabbits, 40 were randomly selected for establishing CNV model in corneal stroma. The right eyes (group A) were received no medicine and the left eyes ( group B) were injected dexamethasone after successfully establishing the model. The no modeling 3 rabbits were normal control group. The morphologic change of corneal was observed with slit lamp microscope and the areas of CNV was calculated every day, then 8 rabbits were randomly chosen for sacrificing at 1, 4, 7, 14, 21d respectively. The pathological characteristics of CNV were observed after HE staining, and lL - 1β and TNF - α expression was detected by immunohistochemistry.
●RESULTS: CNV was grown at the 4d after suture, and the 7-14d was vigorous growth period. inflammatory cell infiltration appeared after HE staining, and CNV was located at the superficial stroma of cornea. lmmunohistochemistry results showed that lL - 1β and TNF - α expression was gradually increased with prolonged suture time. Compared with corneal stitch group, the rabbits cured by dexamethasone were found with less inflammatory cells infiltrating and neovescularization, moreover, the expression of lL - 1βand TNF-α decreased. There were statistical significance between the two groups (P<0. 05).
● CONCLUSlON: Dexamethasone can inhibit the CNV growth by controlling the inflammation of corneal and restraining lL-1β and TNF-α expression.

Aim The relative bioavailability of domestic ibudilast sustained release capsules in healthy volunteers was observed.Methods A single oral dose of 20 mg of imported and domestic ibudilast sustained release capsules and 10 mg of ibudilast raw material was separately given to 12 healthy volunteers in a randomized crossover study. Ibudilast concentration in plasma was determined by HPLC method.Results The Cmax were (54.9?9.7),(60.7?9.1) and (62.2?11.5) ?g?L-1; the tmax were (3.8?0.8),(3.9?0.8) and (1.8?0.3) h;the t1/2(ke) were (1.5?1.4),(12.1?1.0) and (3.5?0.5) h,and the AUC(0～t) were (618.1?57.7),(588.1?66.6) and (233.0?46.4) ?g?h?L-1 in imported capsule group, domestic capsule group and raw material group respectively. The relative bioavailability of domestic sustained release capsules of ibudilast is (95.6?11.0)%. Conclusion The results of statistical analysis demonstrate that the imported and domestic sustained capsules have significant character of significantly sustained release and are bioequivalent.

Objective To study the sensitivity and specificity of a double monoclonal antibody sandwich enzyme-linked immunosorbent assay (DMcAbS-ELISA)for the detection of F1 antigen of Yersinia pestis (Y.pestis).Methods Viscera (viz.liver and spleen)specimens of infected mice with virulent Y.pestis and negative control mice were detected by bacteriological test,DMcAbS-ELISA and reverse indirect hemagglutination assay (RIHA) for the F1 antigen.Results The 225 control specimens were all negative tested by plague bacteriology testing,DMcAbS-ELISA and RIHA.A total of 308 plague-infected mouse organ specimens were tested,and the positive detection rate was 92.21％ (284/308),90.91％(280/308) and 89.61％ (276/308),respectively,with germiculture,DMcAbS-ELISA and RIHA,and the difference was not statistically significant(x2=5.65,P＞0.05).The coincidence rate of DMcAbS-ELISA and bacterial culture was 97.00％[(274+243)/533],Kappa =0.940;RIHA in line with the rate was 99.25％[(276+253)/533],Kappa =0.985.Authenticity comparison of F1 antigen detection in viscera specimens:sensitivity,specificity,positive predictive value,negative predictive value,adjusted agreement and Youden's index was 96.48％(274/284),97.59％(243/249),97.86％ (274/280),96.05 ％(243/253),96.99％[1/4×(274/280+274/284+243/253+243/249)]and 0.9407,respectively,for DMcAbS-ELISA and 96.13％(273/284),98.80％(246/249),98.91％(273/276),95.72％(246/257),97.39％[1/4×(273/276+273/284+246/257±246/249)]and 0.9492,respectively,for RIHA.The detection sensitivity of DMcAbS-ELISA and RIHA was 2.7×104 cfu/ml and 2.2×105 cfu/ml,for Y.pestis,respectively,and was 10 μg/L for F1 antigen.Conclusions DMcAbS-ELISA assay is a sensitive,specific,simple and fast method for detection of the F1 antigen,and it has a potential application value in rapid diagnosis of plague.

OBJECTIVETo discuss the resection of tumors, reconstruction of defects and the postoperative complications.

METHODSThirty-one patients with tumors around acetabular were treated surgically in People's Hospital between July 1997 and July 2003. The series comprised 19 males and 12 females. Twelve patients were diagnosed with chondrosarcoma, 1 with Ewing sarcoma, 3 with osteosarcoma, 1 with lymphoma, 1 with carcinosarcoma, 1 with malignant fibrohistiocytoma (MFH), 2 with myeloma, 9 with giant cell tumor (GCT), 1 with aneurysmal bone cyst. Among 31 patients with peri-acetabular tumors, 8 were reconstructed with hemi-pelvic prosthesis, 7 with saddle prosthesis, 6 with cauterized tumor bone and total hip arthroplasty, 10 with total hip replacement after curettage of lesion and cemented.

RESULTSAmong 21 patients who underwent tumor resection and reconstruction in region II, 6 had local relapse. Two of 3 patients with osteosarcoma were dead. Five of 12 patients with chondrosarcoma were free of disease. Twenty-one patients with acetabular reconstruction after resection of lesions in region II could sit and stand normally and walked with a cane, several of which even had normal gait.

CONCLUSIONAllograft or pelvic prosthesis can be used to reconstruct the acetabulum after resection of tumors. We must pay more attention on the following points in the surgical treatment of periacetabular tumors: (1) Extensively resect tumors as far as possible; (2) Be acquainted with advantages and disadvantages of different reconstructive methods of acetabulum to prevent the complications; (3) The reconstructed acetabulum is unstable, so the patients must stand with a cane to protect the reconstructed hip joint; (4) Prevent wound necrosis and infection; (5) Surgical treatment of pelvic tumors would easily result in poor wound healing especially in the patients receiving chemotherapy or radiotherapy because of extensive soft tissue stripping. The destroyed soft tissue caused by chemotherapy or radiotherapy may increase the great tissue tension after implantation of allograft. And the factors of poor blood supply and hematoma in the wound theoretically increase the chance of infection.

Acetabulum ; surgery ; Adolescent ; Adult ; Aged ; Arthroplasty, Replacement, Hip ; methods ; Child ; Female ; Hemipelvectomy ; methods ; Humans ; Male ; Middle Aged ; Pelvic Neoplasms ; surgery ; Postoperative Complications ; prevention & control ; Retrospective Studies