Objective: To make students grasp basic thinking and learning methods, improve practice efficiency and creativity. Methods: In surgery teaching we should pay attention to building helpful thinking environment, design the breakthrough point of thinking, train students in problem consciousness, make students think vertically, horizontally, reverse and train them to think comprehensively. Results: Through various kinds of training of dispersing thinking, students can use these methods to think actively to seek different solutions to the same problems or improve the ability of problem analyzing and solving. Conclusion: The teacher should pay attention to the training of student's dispersing thinking ability in surgical teaching course.

The study of brain information flow is of great significance to understand brain function in the field of neuroscience. The Granger causality is widely used functional connectivity analysis using multivariate autoregressive model based on the predicted mechanism. High resolution electroencephalogram (EEG) signals of ten healthy subjects were collected with a visual selective attention task. Firstly, independent component analysis was used to extract three spatially independent components of the occipital, parietal, and frontal cortices. Secondly, the Granger causal connectivity was computed between these three regions based on the Granger causality method and then independent sample t-test and bootstrap were used to test the significance of connections. The results showed that Granger causal connectivity existed from frontal to occipital and from parietal to occipital in attentional condition, while causal connectivity from frontal to occipital disappeared in unattentional condition.
Algorithms ; Attention ; Brain ; physiology ; Electroencephalography ; Healthy Volunteers ; Humans

AIM: To evaluate the inhibitory effect of galactose (Gal)-polyethyleneimine (PEI)-c-myc antisense oligodeoxynucleotide (ASODN) complex on proliferation of human hepatocellular carcinoma cells. METHODS: Human hepatocellular carcinoma cell line Bel-7402 was treated with Gal-PEI-ASODN complex. Cell proliferation was tested by trypan blue dye at different time points and with various concentrations of ASODN treatment. Cell morphology was observed under inverted microscope, cell hypodiploid percentage was analyzed by flow cytometry and cell ultrastructure was observed through electron microscopy. RESULTS: Compared with ASODN group (20 ?mol/L) from (0 h) to 96 h, Gal-PEI-ASODN complex (with ASODN 0.75 ?mol/L) significantly suppressed Bel-7402 cells proliferation, the ASODN concentration within Gal-PEI-ASODN complex and time course acquired were significantly lower and shorter, respectively. Incubated with pure ASODN at different concentrations for 72 hours, cell proliferation was inhibited and IC_(50) was 20.9 ?mol/L; while mediated with galactose receptor for 48 hours, ASODN significantly inhibited cell proliferation and IC_(50) was only 0.294 ?mol/L, the inhibitory efficacy of ASODN enhanced 70.9 folds. While Bel-7402 cells were incubated with Gal-PEI-ASODN complex for 48 hours, cell hypodiploid percentage was much higher than ASODN groups and cell apoptosis was seen under electron microscopy. CONCLUSIONS: Galactose receptor mediated ASODN delivery may significantly increase proliferation inhibition efficacy on Bel-7402 cells. [

Objective: To imrove the current situation that disinfection is inconvenient and ineffective when infant incubators are used. Methods: To make some improvements without changing the structure and performance of existing infant incubators. Results: Built-in disinfection device is designed to overcome the difficult operation, poor effect and inconvenience in use. Conclusion:It has been awarded“the state utility model”for its safety and convenience (patent no:ZL200520117573.9).

Background:With the increasing of antibiotic resistance and decreasing of eradication rate of standard triple therapy, bismuth-containing quadruple regimens were recommended by the update Chinese consensus report for eradication of Helicobacter pylori( Hp ) infection. Aims:To evaluate the eradication rate of the recommended bismuth-containing quadruple regimens for guiding the choice of low cost and high efficiency eradication regimens. Methods:A search of online database( CNKI,Wanfang and VIP)was carried out. Clinical trials published in Chinese from 2011 to 2013 that evaluated the eradication rate of the recommended bismuth-containing quadruple regimens were retrieved. Data were extracted by standardized data forms. According to the categories raised by Dr. Graham,the eradication rates were graded and analyzed. Results:A total of 166 eligible articles including 192 clinical trials for eradication of Hp infection were obtained. Nationwidely,the eradication rates of amoxicillin-containing regimens were acceptable,among which PAFB( PPI+amoxicillin+furazolidone+bismuth)regimen was more prone to achieve excellent eradication rate(≥95%). PACB ( PPI+amoxicillin+clarithromycin+bismuth)regimen was optimal for Hp eradication in East China,and PAFB regimen was optimal in Central South China. A 14-day treatment course was appropriate. Conclusions:In the recommended bismuth-containing quadruple regimens,PAFB regimen might be the first choice nationwidely for eradication of Hp infection in individuals without amoxicillin-hypersensitivity because of its low cost and high efficiency. The recommended treatment course is 14-day.

Objective To study the relationship between serum adiponection and liver function and insulin level in patients with hepatogenous diabetes.Methods The research subjects included:28 patients with hepatog-enous diabetes who were admitted at Liaocheng People's Hospital (hepatogenous diabetes group);27 patients with simple type 2 diabetes without any complication (simple type 2 diabetes group),and 27 normal controb (control group).Blood adiponectin,fasting blood glucose (FBG),fasting insulins (FINS),alanine aminotransferase (ALT),aspartate transferase (AST),total bilirubin (TBIL) and albumin (ALB) were measured,and according-ly the insulin sensitivity index (ISI) was calculated.Results Compared with the control group.serum adiponec-tin levels and ISI levels were significantly lower in the other two groups (P<0.01),and the adiponectin levels were significantly higher in hepatogenous diabetes group than in simple type 2 diabetes group (P<0.05).The FBG and FINS levels in the hepatogenous diabetes group and the FBG levels in the simple type 2 diabetes group were significantly higher than those in control group (P<0.01).The FINS levels were significantly higher in the hepatogenous diabetes group than in simple diabetes group (P<0.05),while the levels of FBG and ISI were lower than that of simple type 2 diabetes group (P<0.05).Adiponectin levels were negatively correlated with ISI (r= 0.5265,P=0.000),and positively correlated with FBG (r=-0.6040,P=0.000),and were not correlated with liver functions Conclusion Insulin resistance and abnormal metabolism of adipenection exist in patients with hepatogenous diabetes and may together affect the occurrence and development of hepatogenous diabetes.

ObjectiveTo study the effect of nutritional intervention combined with aerobic exercises on serum adiponectin and insulin resistance in nonalcoholic fatty liver (NAFL) patients.Methods32 patients confirmed as NAFL between April 2008 and August 2009 were enrolled into NAFL group and 31 health people into control group.NAFL group received nutritional intervention and followed aerobic exercise program.The changes of body mass index (BMI),serum adiponectin,fasting blood glucose (FBG),fasting insulin (FINS) and serum lipids were recorded before and after interventions.Insulin resistance index (HOMA-IR) was calculated.Inter-group difference,changes after intervention,and correlation between serum adiponectin and the other indexes were analyzed.ResultsCompared with the control group,BMI [ (29.84 ±3.16) kg/m2 vs.(22.22 ± 1.81 ) kg/m2,P =0.000],total cholesterol (TC) [ (5.09 ±0.86) mmol/L vs.(4.38 ±0.85) mmol/L,P =0.002],triglyceride (TG) [ (1.99±0.86) mmol/Lvs.(1.10±0.38) mmol/L,P=0.000],FBG[ (6.02±0.63) mmol/Lvs.(5.02±0.71) mmol/L,P=0.000],FINS[ (13.73±3.24) mU/Lvs.(9.55±1.99) mU/L,P=0.000],HOMA-IR [ (3.74±1.21) mmol/L vs.(2.08 ±0.27) mmol/L,P=0.000] in the NAFL group were significantly higher,while serum adiponectin in the NAFL group was significantly lower [ (4.89 ± 1.81 ) ug/L vs.( 12.97 ± 3.15 ) ug/L,P =0.000 ].After nutritional intervention and aerobic exercises,BMI [ ( 26.65 ± 2.39 ) kg,/m2 vs.(29.84 ±3.16) kg/m2,P =0.000] 、FBG [ (5.61 ±0.47) mmol/L vs.(6.02 ±0.63) mmol/L,P =0.004 ],and FINS [ ( 11.12 ± 2.01 ) mU/L vs.( 13.73 ± 3.24) mU/L,P =0.000 ] in the NAFL group were decreased significantly,while serum adiponectin [ (6.54 ±2.12) ug/L vs.(4.89 ± 1.81 ) ug/L,P =0.001 ] was significantly higher than the level before intervention.Serum adiponectin was negatively correlated with BMI,FBG,FINS,HOMA-IR,and TG (P =0.004,0.000,0.000,0.000,and 0.010),and positively correlated with high density lipoprotein cholesterol (P =0.026),but not correlated with TC (P =0.101 ).ConclusionThe combination of nutritional intervention and aerobic exercises can improve the level of serum adiponectin,adjust the level of serum glucose and serum lipids,and alleviate insulin resistance in NAFL patients.

Objective: To research the comparability of water vapor transmission of laminated films for pharmaceutical packaging determined by different instruments, methods and experimental conditions to provide reference and advice for the related inspection personnel.Methods: The principle, test parameters, conditions and scope of application for the testing methods for water vapor transmission in the national standard (GB) and international standards (ISO, ASTM) were compared by using three kinds of instruments based on different testing principles.Results: Different temperature and humidity conditions had great influence on the results of the same instrument.Under the same temperature and humidity, the instrument with different principles had little influence on the test results.Conclusion: Testing personnel should regularly use the standard membrane to calibrate the instrument of the sensor method.The temperature and humidity should be strictly controlled during the test.They should take measurement accuracy, personnel operation and economic loss into consideration to select the suitable method.

Objective To investigate the expression of sex hormone receptor (SHR) in meningioma and its relationships to the origin of tumor central artery.Methods The expressions of sex hormone receptors, including progesterone receptor (PR), androgen receptor (AR) and estrogen receptor (ER) in 43 cases with meningioma were detected by immunohistochemically streptavidin-peroxidase (SP) method. These data combined with the characteristics of digital subtraction angiography (DSA) were analyzed.Results The expression of ER in meningioma was not related to the origin of tumor central artery. The positive expression rates of PR and AR in external carotid artery (ECA) original group (26.9%,23.1%) were significantly lower than those in internal carotid artery (ICA) original group (88.9%,77.8%) and ECA combined with ICA group (87.5%,87.5%) (all P

BACKGROUND: Bilateral pedicle screw fixation combined with intervertebral decompression and fusion is a classic surgical approach in treatment of lumbar degenerative diseases, but it can cause ligament and other soft tissue damage of lumbar spine and degeneration of the adjacent segments. While translaminar facet screw fixation has its unique advantages.OBJECTIVE: To compare the clinical efficacy of unilateral pedicle screw fixation combined with translaminar facet screw fixation and bilateral pedicle screw fixation for lower lumbar degenerative diseases.METHODS: Forty-six patients with single-level lower lumbar degenerative disease were enrolled, and were then treated with bilateral pedicle screw fixation combined with intervertebral fusion (group A, n=24) or unilateral pedicle screw along with translaminar facet screw fixation and intervertebral fusion (group B, n=22). Afterwards, the clinical indexes and efficacy were compared between two groups.RESULTS AND CONCLUSION: (1) All operations were performed successfully. The length of incision, operation time,intraoperative blood loss, postoperative drainage volume and cost of hospitalization in the group B were significantly superior to those in the group A (P < 0.05). (2) There was no significant difference in the rate of fusion between two groups (P > 0.05). (3) The visual analogue scale and Japanese Orthopaedic Association scores in both groups at 1 week,3, 6, 12 and 24 months postoperatively were significantly improved compared with baseline (P < 0.05), but the scores had no significant differences between two groups (P > 0.05). (4) To conclude, unilateral pedicle screw fixation combined with translaminar facet screw fixation and bilateral pedicle screw fixation both exhibit satisfactory treatment outcomes,while the former holds little trauma, good stability, high fusion rate and less cost, which is a better choice for lower lumbar degenerative diseases.