With the rapid development of high science and technology,new teaching methods related to computer and electronic message techniques,have been applied to the recent medical education.Classical pathological teaching model has been gradually replaced by the modern way.This paper reports our teaching reformed practice by using the new technology and form the current educational theory.

Calmodulin-Binding Proteins ; metabolism ; Female ; Humans ; Hysterectomy ; Leiomyosarcoma ; metabolism ; pathology ; secondary ; surgery ; Lymph Node Excision ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Middle Aged ; Neprilysin ; metabolism ; Ovarian Neoplasms ; secondary ; Uterine Neoplasms ; metabolism ; pathology ; surgery

Aged ; CA-125 Antigen ; metabolism ; Carcinoembryonic Antigen ; metabolism ; Cystadenocarcinoma, Papillary ; metabolism ; pathology ; surgery ; Female ; Humans ; Keratin-7 ; metabolism ; Ki-67 Antigen ; metabolism ; Membrane Proteins ; metabolism ; Uterine Neoplasms ; metabolism ; pathology ; surgery

Objective: To extract Saposhnikovia divaricata polysaccharides (SPS) and to analyze the characteristics of their physicochemistry and structures. Methods: Two main polysaccharides, SPS0 and SPS1, were obtained by DEAE-52 and Sephadex G-200 column chromatography; UV spectrophotometer, heat stability test, IR spectrometry, Congo-red test, environmental scanning electron microscope (ESEM), and atomic force microscope (AFM) were used to determine the physicochemical, morphological, and structural properties of polysaccharides. Results: The uronic acid contents of SPS0 and SPS1 were 12.07% and 0.95%, respectively. IR spectrometry showed SPS0 had a specific absorption peak of -COOH. Congo-red test indicated that only SPS0 had a triple helix conformation. ESEM and AFM showed that SPS0 was neat and orderly, with a hyper branched structure, but irregular figure and fewer branches were observed in SPS1. Conclusion: SPS0 is an acidic and hyper branched polysaccharide, while SPS1 is a homogeneous polysaccharide including β-D-pyranose sugar residues with better heat stability.

Dietary essential amino acids are extracted in the first-pass metabolism by the small intestine.Besides incorporation into mucosal protein,they are also the fuels for the utilization by small intestinal mucosal cells and the precursors for intestinal synthesis of new amino acids and enormous biological important molecules such as glutathione,polyamines,etc.Thus,their gut metabolism is not only crucial for the maintenance of the integrity and function of intestinal mucosa,but also important for the regulation of whole body metabolism.

To explore the value of local anesthesia under ultrasonic guidance for establishing puncture path of superficial tumor.A total of 144 patients with superficial tumor received local pre-puncture anesthesia under ultrasonic guidance so that all lesions were targeted.Transient aggregation of narcotics was applied for raised (n =12) or superficial (n =15) skin lesions.The clarity of scanning acoustic window was enhanced,the puncture distance of tumor broadened and the mass of axial changed to obtain a longer lymph node cortex.The damage of blood vessels occurred easily due to tumor closeness to large blood vessel or shortened puncture path in 17 cases.Anesthetic drug was injected between tumor and blood vessels to enlarge the thickness for visualizing the puncture needle tract clearly.And puncture was accomplished under the guidance of color Doppler.Therefore a puncture path can be created effectively with local anesthesia by ultrasonic guidance.

0.05) compared to control group. Conclusion Induction of anesthesia with isoflurane or enflurane decreases the number of NOS positive neurons in the 6 nuclei in limbic system. The changes in NOS positive neurons in limbic system may be involved in the mechanism of isoflurane and enflurane anesthesia.

Objective To study the prevalent situation of the traffic illegal behaviors ,characteristics of high occurrence and its related risk factors among the residents in Yunnan during 2010 to offer the scientific basis for making the related strategy and countermeasure of road traffic injury prevention and control .Methods By adopting the multistage stratified proportion random cluster sampling method ,the permanent residents aged over 18 years old were randomly sampled from each family for conducting the survey during 2010 .Then the prevalent situation and characteristics of unsafe traffic behaviors were analyzed .Results the oc‐currence rate of unsafe traffic behaviors was 59 .09% .The helmet wearing rate was 40 .45% ,the wearing rate of safe belt in drivers was 46 .75% ;the drunk driving rate was 18 .05% ;The fatigue driving rate was 29 .06% ;the rate of driving without license was 16 .25% .The populations of having high traffic illegal behaviors were male ,ethic minorities ,unmarried people and blue‐collar work‐ers .Conclusion The unsafe traffic behaviors of Yunnan residents is still serious .

BACKGROUND:Previous studies have found that the basement membrane matrix can induced the chondrogenic differentiation of bone marrow mesenchymal stem cels, but there is a wide gap between its mechanical properties and practical application, and further research is needed. OBJECTIVE:To prepare a suitable matrigel/chitosan scaffold that has appropriate mechanical properties and remarkable bioactivity for cartilage repair. METHODS: We selected genipin as cross-linking agent, and mixed Matrigel with cross-linked chitosan at different ratios (2:1, 1:1, 1:3). Then rat bone marrow mesenchymal stem cels were seeded on different scaffolds and cultured for 14 days. The mechanical properties of materials were measured by DMA. Cel counting kit-8, FDA staining, ELISA kits and Alcian blue staining were used to measure the bioactivity of materials. RESULTS AND CONCLUSION:The storage modulus of scaffolds was raised from 0.48 kPa to 1.78 kPa with increase ratio of chitosan. Cels spread wel in the early period on al scaffolds, and then the cels on the chitosan scaffold showed reduced chondrogenic activity, but cels on the scaffolds with matrigel could maintain chondrogenic differentiation. The matrigel/chitosan scaffold at a ratio of 1:1 had appropriate mechanical properties and higher levels of colagen II and colagen X at 14 days. The prepared matrigel/chitosan scaffold with decent mechanical performance can promote the differentiation of bone marrow mesenchymal stem cels into chondrogenic lineages, which can be used in cartilage tissue engineering.

Objective To investigate the effects of different ventilation modes on PaCO 2 and PaO 2 during laparoscopic surgery in the Trendelenburg position.Methods Forty cases of laparoscopic resection of rectal cancer were randomly divided into group A (n =20)and group B (n =20).Under general anesthesia,all the cases were in volume-controlled ventilation mode (VCV,tidal volume=10 ml/kg)before pneumoperitoneum.After ventilating in VCV mode for 20 minutes with a lower tidal volume (8 ml/kg),group A was converted to PCV mode for 20 minutes and then back to the VCV mode for 20 minutes again.Next we switched to PCV combined with PEEP (5 cm H 2 O)mode (PCV+PEEP)for 20 minutes.In group B,we only alternated PCV with PCV combined with PEEP.Arte-rial blood-gas analysis was obtained at each time when ventilating mode changed.Results In both group A and B,PaO 2 in VCV mode was less than that in PCV mode and PCV+PEEP mode (P <0.05),PaO 2 in PCV mode was also less than that in mode PCV+PEEP mode (P <0.05).PaCO 2 in PCV and PCV combined with PEEP mode was less than that in VCV mode (P <0.05 ),and there was no difference of PaCO 2 in PCV mode and PCV+PEEP mode.The pH value in VCV mode was less than that in PCV mode and PCV+PEEP mode (P < 0.05).There was no difference in pH value between PCV mode and PCV+PEEP mode.Conclusion PCV combined PEEP mode is beneficial ei-ther in increasing or decreasing of PaCO 2 during laparoscopic surgery in the Trendelenburg position comparing with single VCV mode or PCV mode.