Objective To investigate the clinicopathological features of central nervous system hemangioblastoma in von Hippel-Lindau syndrome.Methods The data of 10 patients with central nervous system hemangioblastoma in our hospital since 2013 were analyzed retro-spectively,and the clinicopathological features of central nervous system hemangioblastoma in von Hippel-Lindau syndrome were summarized. Results The macroexamination result showed that most tumor lesions were found in the cerebellum and medulla oblongata,with cystic chan-ges,size from 1 cm to 5 cm,the average size was (3.1 ±0.2)cm,clear boundary,intracapsular yellow cyst fluid.The microscopy result showed tumor foci with a rich blood supply,endothelial cell proliferation and hypertrophy in vascular,which arranged in nests or lobulated mesenchymal cells,the cytoplasm of stromal cells was abundant and lightly stained,a rich lipid was seen,with vesicular or foam.Conclusion The von Hippel-Lindau syndrome is usually cystic lesion,the microscopic examination shows tumor foci with rich blood supply,endothelial cell proliferation,hypertrophy and other changes in vascular.

In this paper,the effects of SFPS on red blood cell immune function of P388mice is presented. The results suggest that SFPS' enhancing the immune function of red blood cells of P388 mice may be related to decreasing the content of LPO of red blood cell membranes inhibiting the formation of HMP by protein of red blood cell membranes and systolic protein,increasing the sealing degree of red bold cell menbranes and the content of sialic acid and enhancing the activities of SOD, CAT, and Na+, K+-ATPase of red blood cell membranes.

BACKGROUND: Defatting is to reduce the special cell surface antigens by clearing fat and lipoprotein, so as to decrease immunological rejection, improve the biocompatibility of allograft bone, and increase osteogenic potential. However, the effect of defatting on biomechanical performance of bone remains controversial.OBJECTIVE: To explore the influence of defatting on the biomechanics of bovine cortical bone samples.DESIGN, TIME AND SETTING: Randomized, self-controlled observation was performed in Futian People's Hospital of Guangdong Medical College between 2006 and 2008.MATERIALS: Eight pairs of healthy adult bovine femora were used. Bone blocks, 50 mm long and 10 mm wide, were selected from each pair of femora, and burnished into 24 pairs of 7 mm×7 mm×40 mm rectangular bovine cortical bone samples.METHODS: The 24 pairs of cortical bone samples were randomly divided into two groups (n=12). One of each pair was selected as test group sample, and the other as control group sample. The samples of test group were defatted In 500 mL chloroform and methanol mixture (1:1) for 24 hours, while control samples were immerged in deionized water for 24 hours. Six samples from each group were selected for axial compressive test and three-point bending test.MAIN OUTCOME MEASURES: Load and deflection of every sample.RESULTS: Axial compressive test showed that the maximum load and the maximum strain of defatted samples were significantly decreased compared with control group, but the fragility and elastic modulus were increased (P < 0.05). In three-point bending test, the maximum load and the maximum stress of defatted sampled were significantly decreased, the maximum deflection was decreased, and the elastic modulus was increased (P < 0.05).CONCLUSION: The mechanical strength of cortical bone decreased but the fragility increased after defatting.

A new and effective method to produce transgenic animals was established. Without a surgical incision, the recombinant plasmid containing green fluorescence protein (GFP) cDNA was repeatedly injected into male mouse testis at multi-sites. After few weeks of the final injection, the injected male was mated with normal oestrus female to produce transgenic mice. The presence of the GFP cDNA in F1 transgenic individuals were detected by polymerase chain reaction and Southern blot hybridization, which showed that the transgenic rate of mouse F1 offspring was 41%. The transferred gene was integrated into the host genome and could be transmitted to its offspring. When the positive F1 individuals were mated with the wild type ICR mice, the F2 individuals had a transgenic rate of 37%. The results indicate that the high efficiency of gene transfer and the limited number of manipulations make the method suitable for creating a large number of transgenic animals, especially, for producing domestic animals.

Objective:To compare the efficacy and safety between direct anterior approach (DAA) and posterior approach (PA) in total hip arthroplasty.Methods: This study evaluated postoperative results of 92 consecutive total hip arthroplasties performed by a single surgeon;44 from the DAA,and 48 from PA.The age,body mass index,operation time,blood loss,hospital stay,positioning of the artificial hip,postoperative Harris score and postoperative complications were recorded and analyzed.Results: Both the average age of the patients separately (58.0±11.9) years in DAA group and (61.0±10.4) years in PA group and the body mass index (25.1±3.7) in DAA group and (24.7±3.3) in PA group,showed no significant difference between the two groups.The DAA group had significantly reduced the hospital stay (3.8±1.7) days vs.(4.9±2.3) days for the PA group (P<0.05) and operation time was (76.0±17.4) min in DAA group,and (71.0±14.3) min in PA group (P>0.05).The amount of blood loss: in group DAA (238.0±55.3) mL,and in group PA (387.0±61.2) mL (P<0.05).There was no statistical difference in the positioning of the artificial hip: the cup anteversion in DAA group and PA group was 17.3°±5.3° vs.18.6°±5.1°,the cup inclination was 38.5°±5.7° vs.37.7°±5.2°.In DAA group,there was significantly less use of assistive devices [(24.6±7.8) d vs.(31.7±10.2) d,P<0.05],and the pain was significantly lower.Harris score at the end of 6 weeks of the follow-up: in DAA group 85.7±5.4,and in PA group 81.3±6.1 (P<0.05);at the end of the last follow-up: in DAA group 93.4±4.7,and in PA group 92.3±5.3 (P>0.05).Complications were encountered in the two groups.There were two intraoperative complications (4.4％),1 great trochanter fracture and 1 lateral cutaneous nerve injury in DAA group.No dislocation was observed in DAA group.One dislocations and 1 groin pain were recorded in PA group.No prosthesis loosening,deep vein thrombosis,sciatic nerve injury and other complications occurred in the two groups.Conclusion: Total hip arthroplasty using the anterior approach allows for superior recovery and better stability.

Objective To discuss the application of C-arm CT scanning technology in performing transcatheter arterial chemoembolization for hepatic cancer.Methods Seventy-seven patients of hepatic cancer were treated with selective transcatheter arterial chemoembolization(TACE),which was followed by C-arm CT scanning to observe the embolization effect.C-arm CT scanning was also performed before TACE in 13 cases.Three-dimension reconstruction of the images was carried out on Integris 3D-RA workstation.The therapeutic results were evaluated.Results The embolization state of both the peripheral margin and the body of the tumor could be clearly displayed on CT scans in all 77 patients.Some tiny liver lesions were also detected in 3cases.Conclusion C-arm CT scanning technology is a newly-developed high-tech examination.This examination is very helpful for making the proper operation scheme and for evaluating the curative effect of intravascular intervention.Compared to the traditional CT scanning,C-arm CT scanning can provide more accurate information and stereoscopic image of the lesions,therefore,the whole course of the interventional procedure can be entirely under the operator's control and the curative effect can be evaluated at any time during the operation.C-arm CT scanning can be effectively employed in interventional therapy for multisystemic disorders.

Objective To investigate the effects of miR-10a expression on migration and invasion of human pancreatic cancer cells AsPC-1.Methods Small interfering RNA targeting at miR-10a (miR-10a-siRNA) was constructed,then it was transfected into pancreatic cancer AsPC-1 cells,and nonsense siRNA (Nc-siRNA) group and blank control group was established.Real time PCR assay was used to detect the expression of miR-10a in the 3 groups,and wound healing assay and Transwell assay were used to determine the migration and invasion abilities of cancer cells.The amount of matrix metalloproteinase-13 (MMP-13) in supernatant of cancer cell culture of each group was examined by ELISA assay.Results The miR-10a levels in control group,NC-siRNA group and miR-10a-siRNA group were 1.05 ±0.08,1.03 ±0.06,0.02 ±0.01 ; and the number of transmembrane cell were (150 ± 2.6),(145 ± 2.2),(62 ± 1.8),the levels of MMP-13 in the supernatant were (108.5 ± 2.8),(107.8 ± 2.5),(35.8 ± 1.5) pg/ml.The values were significantly lower in miR-10a-siRNA group than those in control group and NC-siRNA group (P ＜ 0.01).The distance of cultured clone in miR-10a treated cancer cells (736± 18 μm) was significantly longer than those in the controls (385 ±5 μm) and NC-siRNA group (395± 13 μm,P＜0.01).Conclusions Down-regulation of miR-10a by siRNA may inhibit migration and invasion of pancreatic cancer AsPC-1 cells,and the downregulated expression of MMP-13 may be one of the important mechanisms.

Problem-based Learning(PBL)in medical education is the method of instruction using problems of clinical medicine to stimulate students' driving force of learning and guide them to grasp the learning contents.Compared with the traditional teaching method,it has the fundamental difference in the designing idea,implementing mode,evaluation system and actual effect.The management of PBL teaching process and the active creation of teaching environment and conditions are the key factors to ensure the successful implementation of PBL.

Objective To stuay CT findings of adrenal gland trauma(AGT).Methods The CT images of adrenal gland trauma which were found in 1712 patients who had emergency abdominal CT examinations for assessment of blunt force trauma were analyzed restrospectively.Results Among 1712 cases.we identified 29 patients(1.7%)with adrenal gland traumatic lesions.A total of 32 lesions were found.Twenty-six lesions were unilateral(23 right-sided,3 left-sided),and 3 cases were bilateral(6 lesions).Main CT findings were as followed:(1)Adrenal hematomas appeared as discrete round or oval masses expanding the adrenal gland in 22 patients with 25 lesions.The lesions were hyperdense or of homogeneous density in plain scan and did not enhance in three-phase contrast-enhanced dynamic scan.The splayed adrenal limbs around hematoma were enhanced significantly as eurvilinear structures.(2)Mild to moderate uniform swelling of gland was shown in 4 cases.(3)Diffuse irregular hemorrhage obliterating the gland was shown in 3 cases.Contrast extravasation was shown in 1 case,which was active bleeding from the broken adrenal gland proven by operation.Associated CT findings included strand-like hemorrhage of the periadrenal fat and posterior pararenal hemorrhage mimicking thickened diaphragmatic crus.The concurrent injuries of ipsilateral thorax or/and abdomen were found in 25 patients.Conclusion The AGT has typical CT findings.Familiarity with characteristic CT findings of adrenal trauma is essential for the radiologist to avoid misdiagnosis.

Objective To compare the clinical efficacy between continuous and intermittent androgen deprivation in high risk prostate cancer.Methods Sixty-four patients with high risk prostate cancer were treated from January 2008 to April 2009,36 cases who accepted goserelin and bicalutamide were taken as intermittent hormonal therapy (intermittent treatment group),while 28 cases who accepted bilateral orchiectomy in addition to flutamide were regarded as continuous hormonal therapy (continuous treatment group).The comparison of tumor specific mortality,time of prostate specific antigen (PSA) to nadir,tine to PSA recurrence,serum testerone and quality of life score were assessed between the two groups.Results In continuous treatment group and intermittent treatment group,follow-up period was (26.4 ± 10.3) and (28.1 ± 8.7) months,the time of PSA to nadir was (3.8 ± 2.1 ) and (4.0 ± 3.6) months,the time to PSA recurrence was (20.1 ± 12.3) and (24.5 ± 14.6) months,respectively.There was no significant difference between the two groups.At the time of 18,24 and 30 months after therapy,serum testerone was 0.85,0.88,0.89 μg/L in continuous treatment group,while 1.21,1.36,1.48 μg/L in intermittent treatment group,respectively (P ＜ 0.05 ).Similarly,quality of life score was 38.7,40.5,39.8 scores in continuous treatment group,while 49.2,51.4,52.3 scores in intermittent treatment group at the time of 12,18 and 30 months after therapy,respectively (P ＜ 0.05 ).Conclusions Clinical efficacy could not been found between continuous and intermittent endocrinic therapy of prostate cancer.During intermittent,quality of life seems to be better and increases in accordance with serum testerone recurrence at given time.