1.Tissue inhibitor of metalloproteinases-1 and-2 expressions and intimal proliferation following injury of the thoracic aorta in rats
Chinese Journal of Tissue Engineering Research 2007;0(22):-
0.01). There was a significant difference in TIMP-1,-2 expressions between saccule injury group and control group (P
4.Research on Adaptive Balance Reaction for Gait Slippery Instability Events on Level Walk Based on Plantar Pressure and Gait Parameter Analysis.
Yang LI ; Junxia ZHANG ; Ying SI
Journal of Biomedical Engineering 2015;32(6):1217-1222
Nowadays, for gait instability phenomenon, many researches have been carried out at home and abroad. However, the relationship between plantar pressure and gait parameters in the process of balance adjustment is still unclear. This study describes the human body adaptive balance reaction during slip events on slippery level walk by plantar pressure and gait analysis. Ten healthy male subjects walked on a level path wearing shoes with two contrastive contaminants (dry, oil). The study collected and analyzed the change rule of spatiotemporal parameters, plantar pressure parameters, vertical ground reaction force (VGRF), etc. The results showed that the human body adaptive balance reaction during slip events on slippery level walk mainly included lighter touch at the heel strikes, tighter grip at the toe offs, a lower velocity, a shorter stride length and longer support time. These changes are used to maintain or recover body balance. These results would be able to explore new ideas and provide reference value for slip injury prevention, walking rehabilitation training design, research and development of walking assistive equipments, etc.
Adaptation, Physiological
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Foot
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Gait
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Humans
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Male
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Postural Balance
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physiology
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Pressure
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Reference Values
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Walking
5.Effects on humoral immune response to classical swine fever vaccine after experimental infection of porcine circovirus type 2
Xingkui SI ; Xin GUO ; Hanchun YANG
Chinese Journal of Veterinary Science 2009;29(7):826-829
The levels of the antibody response against,classic swine fever (CSF) vaccine were measured by blocking ELISA at different time for pigs vaccinated with CSF vaccine (CSFV group,n= 3),pigs inoculated with porcine eircovirus type 2 (PCV2) and with CSF vaccine two weeks later (when PCV2 viremia was detected by PCR,PCV2/CSFV group,n=3),or inoculated with both CSF vaccine and PCV2 at the same time (CSFV/PCV2 group,n=3),respectively.And distribution of genome or antibodies specific to PCV2 of the PCV2 infection group,PCV2/CSFV group and CSFV/PCV2 group were also detected by indirect ELISA or PCR,respectively.The results showed that experimental infection of PCV2 was successful.In pigs inoculated with both PCV2 and CSF vaccine,the antibody response to CSF vaccine was significantly lower than that of animals treated with CSF vaccine vaccination alone at 52 days postinoculation (DPI).The average titers of antibodies against CSFV in animals of CSFV group were obviously higher than those of the PCV2/CSFV or CSFV/PCV2 group at 49 and 52DPI,respectively.The positive rate of antibodies against CSFV in pigs of CSFV group was 100% in comparison with that of animals inoculated with PCV2 and the vaccine (only 67%).The results suggested that the infection of PCV2 could suppress the antibody response to classical swine fever vaccine.
6.Suspension-assisted training of motor function for patients with cerebral infarction
Guoliang YANG ; Fuzhong SI ; Zhendong LIU
Chinese Journal of Physical Medicine and Rehabilitation 2011;33(4):281-284
Objective o observe the therapeutic effects of suspension-assisted functional rehabilitation training of motor function for patients with cerebral infarction. Methods Ninety-six patients with cerebral infarction were divided randomly into a treatment group and a control group. All patients were given routine medical treatment and routine limb movement therapy. Those in the treatment group also used an electrically-driven suspension device to aid in their functional rehabilitation training. The patients were assessed with a simplified Fugl-Meyer Motor Functional Assessment (S-FMMFA), and using the Postural Assessment Scale for stroke patients ( PASS), the Barthel Index (BI) and the 6-minute walking distance test before and after treatment and at a 6-month foliowup. Results The average S-FMMFA, PASS, BI and the 6-minute walk results in the treatment group were all significantly better than those in the control group. Conclusions Suspension-assisted training can significantly help improve limb movement function and ADL performance in cerebral infarction patients.
7.Eukaryotic expression of B7.1 extracellular domain and its biological activities
Zhangmin YANG ; Yili WANG ; Lsheng SI
Journal of Xi'an Jiaotong University(Medical Sciences) 2003;0(06):-
Objective To eukaryotically exp ress B7.1 extracellular domian and investigate its biological activities. Methods Recombinant expression vector pDisplay/B7.1(V+C) wa s transfected into Hela cells by electroporation method. The expression of B7.1( V+C) was identified by immunohistochemistry and in situ hybridization, respectiv ely. In vitro T lymphocyte activation activity was detected by 3H-TdR incoporation method and the aroused cytotoxicity after mixed culture of pDispla y/B7.1(V+C) transfected Hela cell-T cell was observed by MTT method. R esults B7.1(V+C) was expressed successfully on the surface of Hela c ells. The expressed B7.1(V+C) was able to activate T lymphocytes in the pres ence of anti-CD3 monoclonal antibody. Cytotoxicity could be observed when pDisp lay/B7.1(V+C) transfected Hela cells were mixed and co-cultured with T lymphocy tes. Conclusion Eukaryotically expressed B7.1(V+C) main tains its T lymphocyte costimulatory activity, and B7.1(V+C) can be adopted to construct bifunctional molecules for tumor immunotherapy.
8.THE COMPARISION OF IN SITU HYBRIDIZATION BY USING ~3H WITH DIGOXIGENIN LABELED TNF PROBE
Tianju LIU ; Lusheng SI ; Juxiang YANG
Journal of Xi'an Jiaotong University(Medical Sciences) 1981;0(03):-
The TNA mRNA expression in 33 samples of cervical carcinoma and 28 samples of condyloma have been observed by using ~3H and Digoxigenin labeled TNF—? cDNA probes and in situ hybridization technique, we found that the results of in situ hybrdfzation with these two kinds of labeled probes were alike, the sensitivity with ~3H labeled probe was slightly higher than that with Digoxigenin labeled probe. Nevertheless, the nonisotope probe would be used more and more in future because of its safety, rapidity and convenience in work.
9.Application of fingertip photoplethysmogram assessment of endothelial function in screening coronary heart disease patients
Yunfei WANG ; Daoyuan SI ; Ping YANG
Journal of Jilin University(Medicine Edition) 2016;42(5):1014-1018
Objective:To investigate the application of photoplethysmogram in analyzing the fingertip pulse amplitude volume (PAV)to evaluate the endothelial function in diagnosing coronary heart disease,and to clarify its relationship with the risk factors of cardiovascular diseases.Methods:Total 409 patients with chest pain accepted coronary angiography (CAG)were selected and diveded into positive group (CAG+)(n=288)and negative group (CAG-) (n = 121)according to angiographic results.Fingertip photoplethysmogram was used to analyze the fingertip PAV by the way of applying endothelial function diagnostic after reactive ischemia,and the relationship between the PAV value and the risk factors of coronary heart diseases was analyzed,and the critical reference value of prediction index of coronary heart disease was determined.The risk factors such as age,gender,serum total cholesterol (TC ), low density lipoprotein (LDL ), high density lipoprotein (HDL ), non-HDL, serum triglyceride (TG),hypertension,diabetes,smoking,family history of coronary heart disease,body mass index (BMI)of the subjects in various groups were analyzed,and the relationship between the risk factors of coronary heart disease and PAV was analyzed by Logistic regression analysis.Results:The PAV of patients in CAG+group was significantly lower than that in CAG-group (P <0.01).The peak point of PAV was<1.37,if PAV<1.37 was used to predict the coronary heart disease,the predictive sensitivity,the specificity,the positive prediction and the negative prediction were 74.65%,44.63%, 76.24%, and 42.52%.The Logistic regression analysis showed that PAV was negatively associated with hypertension,smoking history,TG (OR= 1.476,OR=2.002, OR = 1.844;P < 0.01 ). Conclusion: PAV is associated with coronary heart disease and its risk factors (hypertension,smoking history,TG),and PAV=1.37 can be used as the peak point to predict the coronary heart disease.
10.The Study of Relationship Between Apolipoprotein H and Serum Lipid in Patients with Cerebral Infarction
Jie YANG ; Jian XIA ; Weixiong SI
Journal of Chinese Physician 2001;0(01):-
Objectives To observe the correlation among the level of serum apoH and liplid parameters in patients with cerebral infarction and study the relationship between the serum apoH level and cerebral infarction.Method The serum levels of apoH in all subjects were measured by using radioimmunoassay.Results Mean apoH level of the patients in actue and convalescent cerebral infarction was increased remarkably as compared with both stroke dangerous factor control group and normal control group(P