Bilingual teaching was taken into the part of computed tomography(CT)teaching in the medical image equipment for 2003 grade image undergraduates.In order to know the students' demands to the bilingual teaching as well as the students' requests in the bilingual teaching implementation process,the questionnaire was carried on to the students;at the same time the bilingual teaching test result was analyzed so as to evaluate its teaching effect.

Objective To investigate the effects of Propofol in blood spinal cord barrier (BSCB) disruption induced by spinal cord ischemia reperfusion injury (SCIRI). Methods 72 Japanese white rabbits were randomly assigned into 3 groups: sham-operation group (S); ischemia/reperfusion group (I/R) and Propofol treatment group (I/R + P). The Group S was separated the aorta without cross-clamping. SCIRI was induced in rabbits by infrarenal aortic occlusion for 30 minutes. Propofol was intravenously infused at 10 minutes before aortic clamping and at onset of reperfusion in the Group I/R + P. The Group S and Group I/R were intravenously infused 0.9%sodium chloride. Hind-limb motor function was assessed using Tarlov criteria, and histological observation by histological examination. The permeability of the BSCB was examined using EB as vascular tracers. The expression of MMP-9, claudin-5 and NF-κB were assessed by Western blot, RT-PCR. Results Propofol minimized the neuromotor dysfunction and histopathological deficits and attenuated EB extravasation. In addition, Propofol suppressed SCIRI-induced increase of MMP-9 and NF-κB. Finally, Propofol reduced the loss of claudin-5. Conclusion Propofol stabilizes the BSCB integrity after SCIRI. This beneficial effect is partly mediated by inhibition of MMP-9 and preservation claudin-5 and relates to inhibiting the NF-κB signal pathway.

Insulin is a hormone produced by isletβcells, which plays an important role in regulating cell division, cell differentiation, cell growth and regulating blood glucose levels.Decreased insulin and isletβcell dysfunction are vital fundamental characteristics of diabetes.There are many transcription factors involved in the development and maintaining of isletβcells.This review focuses on the transcription factors aboutβcell development.

Objective To evaluate the clinical results of surgical treatment of intra articular fractures of the calcaneus using calcaneal anatomical plate. Methods From January 1999 to September 2003, 82 patients with calcaneal fracture were treated differently based on the results of X ray and semi coronal CT scan performed before and after the treatment. According to Sanders classification system, there were 36 cases of type Ⅲand 9 cases of type Ⅳwho received treatment of lateral L type incision and internal fixation with calcaneal anatomical plate. Results The internal fixation with the calcaneal anatomical plate almost restored the height, length and width of the calcaneus for the 45 patients. Infection of incision happened in 3 patients but healed after debridement and administration of antibiotics. Because of severe subtalar osteoarthrosis, 4 patients experienced subtalar arthrodesis. The follow ups averaged 38 months. According to the classification of calcaneal fractures by the American Surgery Association of Foot and Ankle, the results were excellent in 6, good in 26, fair in 7,and poor in 6. The excellent and good rate was 71.1%. Conclusion The internal fixation with the calcaneal anatomical plate to treat intra articular fractures of the calcaneus of Sanders Ⅲand Sanders Ⅳcan renew the calcaneal configuration and achieve preferable clinical effects.

Objective: To determine the contents of three effective components in Xianlinggubao Capsules. Methods: A RP HPLC was developed for the determination of psoralen, isopsoralen and icariin in Xianlingbao Capsules. Results: The contents of these compoments were 0.93mg/g, 0.95mg/g and 9.2mg/g, respectively. Conclusion: This Methods is simple and reliable.

Objective To observe the mitochondrial damage associated with protein-energy wasting of skeletal muscle in diabetic kidney disease (DKD) model of Goto-Kakizaki(GK) rats and evaluate the effects of low-protein diet supplemented with α-keto acids on muscle wasting.Methods Forty-five male 24-week-age GK rats were randomly divided into three groups,normal protein diet group (NPD),low-protein diet group (LPD) and LPD +or-keto group (Keto).Fifteen gender and age matched Wistar rats were served as control group (CTL).The living condition of GK rats was observed and the weight was measured once a week.Urine albumin,serum glucose,creatinine and urea nitrogen were measured at 24,32,40,48 week age.Soleus muscle was observed to calculate the muscle size and the percentage of Ⅰ and Ⅱ type muscle fiber with software after SDH and NADH staining at 48-week-age.Tissue ultrastructure was observed under the transmission electron microscopy.The activity of citrate synthase was detected by spectrophotometer.Expression of mitochondrial DNA was examined by Q-PCR.Results Compared with the CTL group,NPD,LPD and Keto groups had lower body weight,higher urine albumin,higher serum creatinine and urea nitrogen (P ＜ 0.05).The crosssectional area of muscle fibers was larger in CTL group.Compared with CTL group,the muscle fiber was partly broken,the mitochondrial morphology was obviously changed,the percentage of type Ⅱmuscle fiber was increased significantly (P ＜ 0.05),and the activity of citrate synthase and the number of mitochondrial DNA were decreased significantly in NPD,LPD and Keto groups (P ＜ 0.05).In Keto group,muscle wasting was improved compared with NPD and LPD group (P ＜ 0.05),the crosssectional area of soleus muscle increased and the percentage of type Ⅱ muscle fiber decreased,levels of urine albumin,semm creatinine and urea nitrogen decreased (P ＜ 0.05).Under transmission electron microscopy,the muscle fiber of keto group was intact and mitochondiral morphology was close to that of CTL group.The activity of citrate synthase and number of mitochondiral DNA were higher as compared to CTL group (P ＜ 0.05).There were no significant differences between NPD and LPD group.Conclusions In DKD condition,protein degradation in the skeletal muscle is accelerated,mitochondrion is swelling,the number of mitochondrial DNA is decreased and mitochondrial function is impaired.Low-protein diet supplemented with α-keto acids can improve mitochondrial damage and muscle wasting induced by DKD.

Objective To compare the histopathologic and immunohistochemical differences between primary renal cell carcinomas and paired bone metastases in order to discuss the significance in the selection of standard targeted therapies.Methods The clinical data of 19 patients who underwent nephrectomy and resection of bone metastases successively from January 2003 to September 2013 were analysed retrospectively.The paraffin-embedded surgical samples of all the patients were obtained for histopathologic and immunohistochemical analysis.The differences of Fuhrman grades,expression of Ki-67,CD34,vascular endothelial growth factor receptor 2 (VEGFR2),epidermal growth factor receptor (EGFR) and CXC subfamily receptor 4 (CXCR4) were compared between primary renal cell carcinomas and their paired bone metastases.Microvessel density (MVD) was evaluated by the CD34 immunostaining.Results The Fuhrman grades of samples from bone metastases were higher than that of primary tumors (36.8％,7/19) (P=0.008).The Ki-67 label index was (4.00±3.96)％ in primary tumors and (7.90±7.38)％ in bone metastases (P=0.033).The microvessel density (MVD) was 58.13±22.90 in primary tumors and 46.71±25.40 in the bone metastases (P=0.026).The immunohistochemistry scores of VEGFR2 were 4.68±1.20 in primary tumors and 4.05±1.58 in bone metastases (P=0.014).The immunohistochemistry scores of EGFR were 5.89±1.05 in primary tumors and 5.47± 1.12 in bone metastases (P=0.134).The immunohistochemistryscores of CXCR4 in cytomembrane and cytoplasm were 1.74±1.97 in primary tumors and 2.16± 1.64 in bone metastases (P=0.414).The inununohistochemistry scores of CXCR4 in cell nucleus were 2.52±2.09 in primary tumors and 3.42±1.95 in bone metastases (P=0.009).Conclusions The Fuhrman grades and the expression of Ki-67 and CXCR4 in cell nucleus were higher in bone metastases than that in the primary renal cell carcinomas.The MVD and the expression of VEGFR2 were lower in bone metastases than that in the primary tumors.The above alternations may contribute to the poor prognosis of bone metastasis and the poor result of angiosuppressive therapy.

AIM: To establish the quality sdandard for Xintongning Tablet(Radix et Rhizoma Ginseng,Radix et Rhizoma Salviae Miltiorrhizae,etc.) METHODS: TLC was used to indentify Radix et Rhizoma Salviae miltiorrhizae,Rhizoma Curcumae Longae and Fel Ursi Powder.The contents of ginsenoside Rg_1,Re were determined by HPLC. RESULTS: Radix et Rhizema Salviae miltiorrhizae,Rhizoma Curcumae Longa and Fel Ursi Powder could be indentified by TLC.The average recoveries of ginsenside Rg_1,Re were 97.18% and 96.74% respectively(n=5). CONCLUSION: The methods are reliable and reproducible.It can be used for quality control of Xintongning Tablets.

Objective: : To explore the effect of PD-1 gene knockout by CRISPR/Cas9 system on the proliferation and IFN-γ secretion in human T cells. Methods: : The sequence of sgRNA targeting PD-1 was designed. The PD-1-sgRNA and Cas9 mRNA were synthesized by T7 RNApolymerase in vitro, and then the mixture of PD-1-sgRNAand Cas9 mRNAwas delivered into activated T cells by nucleofection. The efficiency of gene knockout was confirmed by sequencing. The phenotypes of T lymphocytes and the expression of PD-1 after gene knockout were analyzed by Flow cytometry. The proliferation of T lymphocytes was calculated by trypan blue counting. The level of IFN-γ secreted by T lymphocytes was detected by ELISA. Results： ：PD-1-sgRNA and Cas9 mRNA were successfully synthesized in vitro and delivered into T cells by nucleofection. Sequencing technology confirmed that the PD-1 gene sequence was edited and the editing efficiency was 58.3%. The expression of PD-1 on T lymphocyte surface was down-regulated successfully by CRISPR/Cas9 system [(9.6±1.85)% vs (16.2±2.05)%, P<0.05]. The knockout of PD-1 gene did not affect the proliferation and phenotype of T lymphocytes(P<0.05); However, compared with the control group, the level of IFN-γ secreted by T lymphocytes in the PD-1sgRNA group was significantly increased (P<0.01). Conclusion: : CRISPR/Cas9 system can successfully ablate PD-1 gene in human T lymphocytes, which could block the negative regulation of PD-1／PD-L1 and further promote the IFN-γ secretion in T cells.

Objective:To develop health-related physical fitness measurement scale and assess its reliability and validity among older adults.Methods:The health-related physical fitness measurement scale was developed through Delphi method and field investigation method.And the authority coefficient, Kendall's coefficient and variation coefficient were analyzed.A multi-stage random sampling technique was adopted to select 410 older adults to investigate the reliability and validity of health-related physical fitness measurement scale with test-retest reliability, Cronbach's α coefficient and Guttman Split-Half coefficient and structural validity by IBM SPSS 20.0 and AMOS 22.0.Results:The health-related physical fitness measurement scale consisted of 3 dimensions (organic function, motor function, physical adaptive capacity) and 15 indexes.The Cronbach's α coefficient was 0.84.The Spearman-Brown correlation coefficient and Guttman Split-Half coefficient were both 0.82.The test-retest reliability between the first measurement and retest after 1 week was 0.84.Three factors were extracted by exploratory factor analysis, which were basically consistent with the theoretical concept of the scale, but the items of the theoretical conception were different from the actual ones.Confirmatory factor analysis based on the theoretical conception showed that all the indexes met the requirements of reference value as well(χ 2/ df=2.38, GFI=0.94, AGFI=0.91, CFI=0.92, TLI=0.91, TFI=0.92, RMSEA=0.06). Conclusion:The health-related physical fitness measurement scale has good reliability and validity in measuring the health fitness level of the elderly population in Guangzhou.