Ameliorating effect of sesamin on insulin resistance of hepatic L02 cells induced by high glucose/high insulin.

Sesamin (SES) has the ameliorating effect on L02 hepatocyte model of insulin resistance induced by high glucose and high insulin, based on insulin receptor signaling pathway IRS/PI3K/Akt. Treatment with SES (200, 100µg/ml) increased glucose consumption, glucose uptake and the intracellular glycogen synthesis of L02 hepatocyte model of insulin resistance significantly. Moreover, treatment with SES promoted the gene and protein expression levels of insulin receptor (InsR) and the post-receptor associated proteins, such as insulin receptor substrate 1 (IRS1), insulin receptor substrate 2 (IRS2), PI3K (phosphatidylinositol 3-kinase), GLUT4 (glucose transporter 4) significantly, which were determined by RT-PCR and immunoblot analysis. In conclusion, SES has the ameliorating effect on L02 hepatocyte model of insulin resistance induced by high glucose/high insulin, which might be related to its effect on promoting expression of insulin receptor and its associated proteins of IRS-PI3K-Akt passway, and thus promoting insulin sensitivity.

Analysis of anti-relfux plastic stent for treating malignant biliary obstruction in 22 patients / 中国内镜杂志

Objective To compare the curative effect of anti-relfux plastic stent and common plastic stent in treatment of malignant biliary obstruction.Method 22 cases of anti-reflux biliary plastic stent implantation and 30 cases of common bile duct stent implantation from March 2013 to April 2016 were selected as study subject, then compare the operation time, one-time success rate, postoperative pancreatitis, cholangitis, patency, differences in survival situation.Result There was no significant difference between the two groups in the aspects of the operation time, one-time success rate of recent cholangitis after surgery, postoperative pancreatitis (P > 0.05), but there was significant difference between the three aspects of long term patency, cholangitis, survival period (P < 0.05).Conclusion The anti-relfux biliary stent has good long-term curative effect in treatment of malignant biliary obstruction, which worth of further exploration and research.

Advances in ultrasonic assessment of bone status and osteoporosis / 国际生物医学工程杂志

Research on osteoporosis diagnosis has always been a critical isuue in the field of international academia and medicine. Recent progress in quantitative ultrasound (QUS) has suggested that ultrasound, due to its obvious advantages, be considered as an effective and noninvasive tool for assessment of bone status and diagnosis of osteoporosis. This paper presents the principle and recent development in the ultrasonic assessment of bone status and osteoporosis including assessment with through-transmission and backscattering measurement, and also introduces the latest progress in ultrasonic axial transmission technique.Limitations of current research are discussed and suggestions are proposed for future research.

Application of Multimedia Technique Binding Interconnection Network in Surgery Medical Teaching / 中华医学教育探索杂志

This paper has introduced the application of multimedia technique binding interconnection network in surgery medical teaching.The level of teaching and administration in surgery medical teaching have been highly raised by making manufacture medical multimedia courseware,setting up the routes of Chinese-English languages information query and internal-international academic communication,building up the systems of surgery medical test,daily administration and learning in Web.

Study on 4977 bp deletion mutation of mitochondrial DNA in non-small lung cancer / 第三军医大学学报

Objective To study the 4 977 bp deletion of mitochondrial DNA in lung cancer, paraneoplastic tissue and normal lung tissue from non-lung cancer subjects and its significance in the development of cancer. Methods Lung cancer tissues and paraneoplastic tissues from 37 non-small lung cancer patients, and normal lung tissues from 20 patients without lung cancer were analyzed by long PCR technique. Results Mitochondrial DNA 4 977 bp deletion was detected in 54.1%(20/37) of lung cancer tissues, 59.5%(22/37) of paraneoplastic tissues and 30.0%(6/30) of normal lung tissues. The correlation between 4 977 bp deletion and age, smoking was present in our data. Conclusion Mitochondrial DNA 4 977 bp deletion, which may reflect the environmental and genetic influences during tumor progression, is not specific to lung cancer and unlikely to play an important role in carcinogenesis.

Study on variations of mtDNA from high and low metastatic mouse hepatocarcinoma cell sublines / 第三军医大学学报

Objective To investigate the variations of mtDNA from high and low metastatic mouse hepatocarcinoma cell sublines Hca-F and Hca-P, and the relationship between mutations of mtDNA and carcinogenesis. Methods The variations of D-loop, ND3 and tRNA Met+Glu+Ile gene fragments of mtDNA from Hca-F and Hca-P cells were analyzed by PCR-RFLP and sequencing techniques. Results No amplification fragment length polymorphism and restriction fragment length polymorphism were observed in tRNA Met+Glu+Ile , ND3 and D-loop of mtDNA from the 2 cell sublines. Sequence difference between these 2 cell sublines were found in mtDNA D-loop region by sequencing. Conclusions Genetic alteration of mtDNA non-coding region in tumors, which may reflect the environmental and genetic influences operative during tumor progression, can be linked to their tumorigenic phenotype.

Effects and mechanisms of ATRA on proliferation,cell cycle of lung carcinoma cell line A549 / 第三军医大学学报

Objective To investigate the effects and mechanisms of all-trans retinoic acid(ATRA)on the proliferation and cell cycle of lung carcinoma cell line A549.Methods The A549 cells were treated with ATRA at the dosages of 5,10,50 ?mol/L for 1-7 d.The proliferation of A549 was assessed by MTT method and cell cycle was analyzed by flow cytometry.The expressions of CDK4,Rb and p-ERK1/2 were assessed by Western blotting.CyclinD1 mRNA was analyzed by SYBR-PCR amplification.Results ATRA obviously inhibited the proliferation of A549 cells,and the cell cycle was arrested in G0/G1 phase.The expression of p-ERK1/2 protein and CyclinD1 mRNA on A549 cells were decreased.Conclusion ATRA might inhibit the proliferation of A549 cells through down-regulating p-ERK1/2 protein and CyclinD1 mRNA.

Clinical significance of the serum-soluble intercellular adhesion molecule-1 in patients undergoing radical resection of lung cancer / 第三军医大学学报

To investigate the expressions and changes of serum soluble intercellular adhesion molecule-1 (sICAM-1) in lung cancer patients before and after operation and the roles of sICAM-1 in differential diagnosis, metastatic potential, and prognosis. Methods From 2002 to 2003, a total of 17 samples of lung carcinoma tissues and sera were studied. The other 11 non-cancer patients were employed as the controls. Cell surface sICAM-1 levels were analyzed by immunohistochemistry method and ELISA. Results The serum sICAM-1 concentration in the cancer patients was (432.0?124.4) ng/ml. In the controls, however, the serum concentration of sICAM-1 was (262.3?77.7) ng/ml. In patients with lung cancer, the serum concentration of sICAM-1 was significantly higher than that of the controls (P0.05). Conclusion The serum sICAM-1 concentrations in lung cancer patients may play an important role in staging and may also serve as a useful indicator of advanced disease.