Objective To study the mechanism of Hezhong Jiangni Formnla(HJF) in protecting esophageal mucosa.Methods Rat models of reflux esophagitis were established by cardioplasty,pyloric ligation and roux-Y type gastrojejunostomy to evaluate the degree of esophageal mucosa injury.After treatment of HJF,the gastric juice was collected with the method of pyloric ligation to determine its volume and acidity and the activity of pepsin.The gastrointestinal motility was observed after oral use of charcoal powder.The level of malondialydehyde(MDA)in esophageal mucosa was measured to evaluate the esophageal antioxidative ability.Results HJF relieved the injury of esophageal mucosa dose-dependently;it had no obvious influence on the volume and acidity of gastric juice and the activity of pepsin,but it could obviously improve the gastrointestinal motility.MDA level of esophageal mucosa in the model group was increased significantly as compared with the control group.Pretreatment with HJF could greatly inhibited the formation of MDA.Conclusion HJF has protective effect on esophageal mucosa,which may be related to the improvement of gastrointestinal motility and its antioxidant action.

Objective To observe the affection of smoking on atherosclerosis. Methods The research objects were divided into two groups,smoking group and control group in 60 cases. intima-media thickness and the numbers of plaques were measured in both sides of common carotid arteries by gray-scale imaging.Results There was significant difference between smoking group and control group(P

Objective To explore the applications effect of evidence-based nursing in the health education for patients with mixed vaginal infections.Methods One hundred and sixty-eight patients with mixed vaginal infection were divided into observation group(n=84) and control group(n=84).Based on the evidence-based nursing method,the observation group first raised questions,then sought evidence to determine the conclusion according to the literature search,and finally combined with clinical evidence to formulate a reasonable plan for health education and effectively implemented.The control group was given conventional nursing.The two groups were compared in terms of rate of disease-related awareness in return visit 1 month after discharge,behavior 2 months after discharge and disease relapse 6 months after discharge.Results The rate of disease-related awareness and behavior in the experiment group were better than those of the control group significantly(all P<0.05).The rate of disease relapse of the experiment group was lower than that of the control group(P<0.01).Conclusion Application of evidence-based nursing method for patients with vaginal infections in health education can guide the nurses' health education target,improve the patients' cognitive and behavior and reduce the rate of disease relapse.

AIM: To study the protetive effects of Danshenhonghua Injection (Radix Salviae Miltiorrhizae,Stigma Croci,etc) on acute cerebral ischemia in rats. METHODS : The model of acute incomplete cerebral ischemia was built by ligaturing bilateral carotid arteries. Cerebral index,cerebral water content ,capillary permeability of brain,and the change of cerebral morphology in rats were observed. RESULTS : The cerebral index,cerebral water content,capillary permeability of brain decreased remarkably with 7.2,14.4mg?kg -1 of Danshenhonghua Injection,and the injury of brain tissue was also abated by Danshenhonghua Injection significantly. CONCLUSION : Danshenhonghua Injection has the protetive effects on acute cerebral ischemia.

Objective Toinvestigatetheentropyoflocalfieldpotentials(LFPs)recordedinratmedialprefrontal cortex during a Y-maze working memory (WM) task, to provide computing support for neural coding mechanism.Methods Sixteen-channel LFPs were recorded from SD rats while they performed a Y-maze WM task.The data came from 4 rats, 20 trials (10 correct trials and 10 incorrect trials) per rat provided by laboratory of neurobiology in medicine,Tianjin Medical University.Original LFPs were preprocessed to remove 50 Hz power line noise and baseline drift.Multi-taper Fourier transform was applied to calculate spatial distributions of LFPs and band pass filter were used to extract characteristic signal.The entroy coding of 16 channel LFPs was as follows: the physiological window was set to be 500 ms, the step length of physiological window was set to be 125 ms, windows were added to LFPs data, and then LFPs entropy of each sliding window was computed and averaged to get the trend of multichannel entropy values duringthe WM task.Results The power of θ band (4-12 Hz) in LFPs increased.The averaged entropy value ofmultichannel θ band LFPs in correct trials was 0.939±-0.020, which were larger than those in the resting state, 0.795±0.031 (P＜0.05).Those during wrong WM task had no significant difference, which didn't encode the WM task.Conclusions The principal frequency band related to WM is the θ band and LFPs entropy encodes the WM effectively.

AIM: To explore the relationship between berberine content of Banxiaxiexin Decoction in rat serum and gastric motility. METHODS:Berberine content of Banxiaxiexin Decoction was determined by HPLC; Gastric residue was observed in all the rats with a marker of dextran blue 2000 to determine the capacity of gastric evacuation. RESULTS: Banxiaxiexin Decoction markly promoted gastric evacuation ( P

AIM: To investigate the contractile effect of berberine on antral smooth muscle cells in rat stomach. METHODS: Smooth muscle cells were isolated from the antrum of the SD rat stomach. Different doses of berberine were added into cell suspension. Contractibility of smooth muscle cells were measured by micrometry. RESULTS: Compared with the control group the length of the treated cells(0.5g?L -1 ,1g?L -1 ) was significantly short( P

Objective:To investigate the effect of metformin and arsenic trioxide on KG1a cells proliferation of acute myeloid leukemia and its possible mechanism.Methods:CCK-8 method was used to detect the killing effect of metformin,arsenic trioxide and combined application on KG1a cells.Annexin V-FITC/P1 Dual Stain Flow Cytometry was used to detect the effect of combined application on apoptosis of KG1 a cells.Western blot was used to detect the expression of intracellular apoptosis-,autophagy-related protein.Results:Metformin and arsenic trioxide alone or in combination could inhibit the proliferation of KG1 a cells and induce apoptosis of KG1 a cells,and the proliferation inhibition rate and apoptosis rate in the combined drug group were higher than those in the drug group alone(P＜0.05).The combination of drugs induced upregulation of Caspase 8 protein and P62 protein expression and was higher than that in the drug group alone(P＜0.05).Conclusion:Metformin can synergize with arsenic trioxide to kill KG1a cells,and its mechanism of action may be related to inducing apoptosis and enhancing autophagy.

Aerospace medicine has paid more and more attention to abnormal changes of physiological functions induced by weightlessness and studies on their prevention during space flight. In this paper, the effect of space weightlessness on cognitive functions was introduced. We tried to analyze the correlation between the cognitive function changes and relevant Chinese medical syndromes, thus providing a potential available way to prevent and treat weightlessness induced cognitive deficit during space flight.
Aerospace Medicine ; Cognition ; Humans ; Medicine, Chinese Traditional ; Weightlessness

Objective:To evaluate the precision of digital impressions taken under simulated clinical impression taking conditions with TRIOS and to compare with the precision of extraoral digitalizations . Methods:Six #14 -#17 epoxy resin dentitions with extracted #16 tooth preparations embedded were made.For each artificial dentition , ( 1 ) a silicone rubber impression was taken with individual tray , poured with type IV plaster ,and digitalized with 3Shape D700 model scanner for 10 times;(2) fastened to a dental simulator , 10 digital impressions for each were taken with 3Shape TRIOS intraoral scanner .To assess the precision , best-fit algorithm and 3 D comparison were conducted between repeated scan models pairwise by Geomagic Qualify 12.0, exported as averaged errors (AE) and color-coded diagrams.Non-parametric analysis was performed to compare the precisions of digital impressions and model images .The color-coded diagrams were used to show the deviations distributions .Results:The mean of AE for digital impressions was 7.058 281 μm, which was greater than that of 4.092 363 μm for the model images (P<0.05).However, the means and medians of AE for digital impressions were no more than 10 μm, which meant that the consistency between the digital impressions was good .The deviations distribution was uniform in the model images ,while nonuniform in the digital impressions with greater deviations lay mainly around the shoulders and interproximal surfaces .Conclusion:Digital impressions with TRIOS are of good precision and up to the clinical standard .Shoulders and interproximal surfaces scanning are more difficult.