Objective To determine the collagen deposition in adventitia of venous wall and the influence of removal venous thrombus by Fogarty balloon catheter on venous wall at different time.Methods The collagen deposition in adventitia of venous wall in inferior vena caval thrombosis in rats, and the injury of venous wall caused by Fogarty balloon catheter removal of thrombus at different time were observed. Results Collagen deposition in adventitia of venous wall increased with time. The peak of collagen deposition was 10 days after thrombus formation, which was significantly different from the control group (P

Alveolitis, Extrinsic Allergic ; Female ; Humans ; Librarians ; Middle Aged

Objective To measure 95% effective doses (ED95) of propofol and etomidate by using up-down intravenous administration method, and compare the potency ratio and the anesthesia duration of them. Methods Twenty eight male SD rats were divided into two groups randomly: the propofol group and the etomidate group. Loss of righting reflex was regarded as the judgment index of unconsciousness. The dose-response curve was made according to the formula of Y=Ymin+(Ymax-Ymin)/ [1+10log(ED50-X)× m]. Values of ED95 of propofol and etomidate were calculated, and the anesthesia duration periods after administration of the two equivalent dose drugs were measured respectively. Results The values of ED95 were 9 mg/kg and 1.5 mg/kg for propofol and etomidate. The ED95 ratio for propofol and etomidate was 6. There was a significant difference in anesthesia duration between propofol group (465.6±18.5)s and etomidate group (233.7±9.3)s (P<0.05). Conclusion The anesthesia duration of propofol is longer than that of etomidate, taking the ED95 as equivalent dose.

Although the relationship between tumor and venous thromboembolism has been demonstrated, the clinical implications of this association still have to be thoroughly elucidated. The aim of this paper is to review the pathogenetic mechanisms accounting for the development of venous thrombosis, the relationship between tumor and venous thromboembolism, the prophylaxis and treatment of venous thrombosis in tumor patients.

The present paper proposed a central-driven structure of upper limb rehabilitation robot in order to reduce the volume of the robotic arm in the structure, and also to reduce the influence of motor noise, radiation and other adverse factors on upper limb dysfunction patient. The forward and inverse kinematics equations have been obtained with using the Denavit-Hartenberg (D-H) parameter method. The motion simulation has been done to obtain the angle-time curve of each joint and the position-time curve of handle under setting rehabilitation path by using Solid Works software. Experimental results showed that the rationality with the central-driven structure design had been verified by the fact that the handle could move under setting rehabilitation path. The effectiveness of kinematics equations had been proved, and the error was less than 3° by comparing the angle-time curves obtained from calculation with those from motion simulation.
Biomechanical Phenomena ; Humans ; Models, Biological ; Robotics ; Stroke Rehabilitation ; Upper Extremity

Humans ; Male ; Middle Aged ; Silicosis ; diagnosis ; therapy ; Talc ; adverse effects

Objective To construct eukaryotic expression plasmid pIRESneo3-pigment epithelium-derived factor (PEDF) and detect its transient expression in SP2/0 cells. Methods Specific primers were designed based on the mature peptide sequence of human PEDF cDNA in the GenBank. Human PEDF gene was cloned into the eukaryotic expression vector pIRESneo3. The PEDF DNA was transfected into SP2/0 with LipofectamineTM 2000. The recombinant human PEDF protein expressed in SP2/0 cell culture supernatant was identified by Western blot and enzyme-linked immunosorbent assay. The biological activity of the recombinant human PEDF was measured by 3-(4,5-dimethylthiazol-z-y1)-2,5-diphenytetrazolium bromide(MTT) method. Results PCR amplification, restriction enzyme digestion and DNA sequencing confirmed that the mature peptide sequence of human PEDF cDNA was successfully cloned into the eukaryotic expression vector pIRESneo3. And the plasmid was transfected into SP2/0 cells, which could secret PEDF. Western blot analysis showed that there was only one obvious band at the position of relative molecular weight of 50 000, and it is equivalent to the expected value. Enzyme-linked immunosorbent assay suggested that the content of PEDF began to rise after transfection, and peaked at 36 h [(0.92±0.04) μg/ml]. The proliferation of human umbilical vein endothelial cell line was significantly inhibited by supernatant after transfection of 36 h (P<0.05). Conclusions The eukaryotic expression plasmid pIRESneo3-PEDF had been successfully constructed and active human PEDF was transiently secreted, which made a foundation for further study of stable expression and purification of PEDF. This protein could be a potential medication for preventing and managing retinopathy of prematurity.

Objective:To evaluate the role of hemopexin (HPX) in cerebral ischemia-reperfusion (I/R) injury in rats.Methods:One hundred and twenty healthy male Sprague-Dawley rats, aged 7-8 weeks, weighing 250-280 g, were divided into sham operation group (S group, n=36), cerebral I/R group (I/R group, n=36), vehicle group (V group, n=24), and HPX group ( n=24). The model of cerebral I/R injury was established by 120 min middle cerebral artery occlusion followed by reperfusion in anesthetized rats.At 6, 12 and 24 h of reperfusion, 4 rats in S group and I/R group were sacrificed, and the ischemic penumbra of the ipsilateral cerebral cortex was obtained to detect the expression of HPX by Western blot.In I/R, V and HPX groups, 0.9% normal saline 10 μl, 0.1% NaN 3 10 μl, and 1.86 mg/ml HPX 10 μl were injected into the lateral ventricle, respectively, immediately after reperfusion.Eight rats in each group were selected, and neurological deficit was scored at 1-7 days of reperfusion.Eight rats in each group were sacrificed at 1 and 7 days of reperfusion, brains were removed, and brain tissues were obtained for measurement of infarct size, and the percentage of infarct size was calculated. Results:Compared with S group, the expression of HPX in cerebral ischemic penumbra was significantly up-regulated at 24 h of reperfusion in I/R group, and the neurological deficit scores were significantly decreased at 1-7 days of reperfusion, and the percentage of cerebral infarct size was increased at 1 and 7 days of reperfusion in I/R, V and HPX groups ( P<0.05). Compared with I/R group, the neurological deficit scores were significantly increased at 1-7 days of reperfusion, and the percentage of cerebral infarct size was decreased at 1 and 7 days of reperfusion in HPX group ( P<0.05), and no significant change was found in the above indicators in V and I/R groups ( P>0.05). Conclusion:Up-regulation of HPX expression is the endogenous protective mechanism of cerebral I/R injury in rats.

Objective To investigate the change of the serum content of adiponectin in the elderly, and the relationship between hepatic steatosis and the serum content of adiponectin and metabolic syndrome.Methods 264 elderlies were divided into the hepatic steatosis group (87 cases) and control group (177 cases) after B type ultrasonograph examination. The height, weight, waist circumference and levels of serum lipid, glucose, insulin and adiponectin of all cases in the two groups were measured. The relationship between above variables and hepatic steatosis was analyzed. The multiple logistic regression analysis was used to test the efficacy of adiponectin and metabolic syndrome for predicting the probability of having hepatic steatosis in the elderly.Results For the hepatic steatosis group, the serum content of adiponectin was significantly lower than that of the control group ( P<0.01), the frequency of metabolic syndrome was significantly higher than that of the control group ( P<0.01), and the body mass index, waist circumference, blood glucose (fasting blood glucose and postprandial blood glucose), homeostasis model assessment-insulin resistance index, total cholesterol, triglyceride and low density lipoprotein cholesterol increased and high density lipoprotein cholesterol decreased. Logistic regression analysis showed that serum content of adiponectin and metabolic syndrome were associated with the probability of hepatic steatosis.Conclusion The serum content of adiponectin and metabolic syndrome are useful indices for the prediction of hepatic steatosis.

ObjectiveTo explore effect of family rehabilitation on motor function of stroke patients.MethodsTo provide family rehabilitation with community guide for 106 stroke patients, and observe therapeutic effect.ResultsFamily rehabilitation was effective on 106 cases, and the earlier therapy started, the better effect was.ConclusionFamily rehabilitation is playing an important role in treatment of stroke patients.