1.Research methods of gait kinematics and kinetics
Yawei SONG ; Wen SUN ; Hengjing KOU
Chinese Journal of Tissue Engineering Research 2010;14(2):321-324
BACKGROUND: Kinematics studies the movement of the objects using a method of geometry, with strength and quality not taken into consideration; Kinetics major studies the force of people acting on objects and its relationship with the movement of objects. OBJECTIVE: Through an introduction to kinematics and kinetics research equipment, this study was aimed to lead to the current status of kinematics and kinetics, to provide for experimental basis for the research of new equipment and gait experiments. METHODS: Taking "gait, kinetics, kinematics" in English for the search terms, Pubmed database (1999-01/2009-06)was retrieved. Taking "gait, kinematics, kinetics" in Chinese for the search terms, CNKI database (1999-01/2009-06) was searched. Literatures were limited to English and Chinese languages. The kinematics and kinetics research equipment regarding the gait were included, while other kinematics and kinetics experiments were excluded, also outdated and repetitive researches were excluded. RESULTS AND CONCLUSION: Totally 2 367 literature were obtained from the computer screen, and 33 documents of them were involved for analysis according to the inclusion and exclusion criteria, in case of gait analysis method, at home and abroad scholars have carried out extensive studies although the content are quite different, they used identical instruments and methods in the testing of gait, in spite of photography or video recording were applied to calculate and measure kinematic parameters, the force platform was all used to record kinetic parameters. Also there are a small number of studies using the distribution of plantar pressure to measure more precise foot-ground pressure distribution, and then proceed to a comprehensive statistical analysis. Kinetics and kinematics gait analysis is applied not only in rehabilitation medicine, but also widely in athletics sports and the related footwear manufactures, the commonly used method is the plane fixed-point photograph and force platform analysis.
2.The effects of catastrophic disease insurance policy on benefit discrepancy between the patients covered by different medical insurances in Zhuhai City, China
Yawei HAO ; Zhaohui DONG ; Yan LU ; Lihua SUN ; Zhitao CHENG
Chinese Journal of Health Policy 2017;10(4):8-13
Objective: This study aims to analyze the effects of catastrophic disease insurance (CDI), especially to evaluate the influences of CDI on the discrepancy of benefits between the patients covered by the Employee's Medical Insurance (EMI) and the Resident's Medical Insurance (RMI).Methods: The data used in the study are collected from the health insurance database of Zhuhai City in the years of 2012 and 2014.A descriptive analysis is made to depict the general situation of CDI in the city, and a logistic regression model is used to analyze the factors that affect the probability to get the benefits of CDI.Moreover, a triple difference model is built up to probe into the CDI's effects on the discrepancy of reimbursement ratio between patients covered by EMI and RMI.Results: The benefits of CDI favor the patients with old age, high medical expenditures and chronic diseases.When other factors are controlled, patients covered by EMI have lower probability to get CDI benefits than those covered by RMI.Within the patients with high medical expenditures who have gotten the CDI benefits, those covered by EMI enjoy higher reimbursement ratio than those covered by RMI, but CDI decreases the discrepancy by 3.2%.Conclusions: Since the CDI gives more favor to the vulnerable population and narrows the gap of the benefits between EMI and RMI, the policy improves the equity of health security.
3.The Construction and Supposition of Ability Standard in Medical University
Ying LIU ; Aimin SUN ; Yawei YUAN ; Longhua CHEN
Chinese Journal of Medical Education Research 2005;0(05):-
This article introduces a new educational model-Ability Standard Teaching Mode,which emphasizes that students should participate in teaching and promotes the students to change their thinking style from memory and imitation style to thought and creativity style.
4.Mechanisms underlying the contractile responses to doxazosin enantiomers in the rat isolated atrium
Tonghui LI ; Lingna GAO ; Jiaan SUN ; Yawei WANG ; Leiming REN
Chinese Pharmacological Bulletin 2014;(7):989-993,994
Aim To study the mechanisms of inotropic responses to doxazosin enantiomers in the isolated rat atrium.Methods We analyzed the positive inotropic response to (-)doxazosin and the negative inotropic response to (+)doxazosin in the left atrium of rat u-sing receptor-pharmacological technique.Results In the preparation treated with verapamil,the positive in-otropic responses to 3 μmol·L-1 (-)doxazosin were significantly inhibited from the control level (245.7 1 ± 44.29)mg to (172.50 ±43.34)mg,(P<0.05).In the preparation treated with methylene blue,the posi-tive inotropic responses to 3 μmol·L-1 (-)doxazosin were significantly potentiated from the control level (245.7 1 ±44.29 )mg to (303.33 ±45 .90 )mg,(P<0.05 ).In the preparation treated with H-89 ,the positive inotropic responses to 3,10 and 30 μmol · L-1 (-)doxazosin were (338.57 ±96.86 ) mg, (471.43 ±107.61)mg and (520.00 ±103.44)mg, which were significantly (P<0.05 ~0.01)larger than the control levels of (245.71 ±44.29)mg,(314.29 ±90.34)mg and (357.14 ±68.49 )mg.Treatment with phenoxybenzamine,atropine,propranolol or indo-methacin did not significantly affect the responses to doxazosin enantiomers.Conclusion The positive ino-tropic responses to (-)doxazosin in the isolated left a-trium of rat are partially involved in L-type Ca2+chan-nels and intracellular cGMP level.However,α-adre-noceptors,muscarinic receptors,β-adrenoceptors and cyclooxygenases are not related to the responses to doxazosin enantiomers.
5.Effect of miRNA on radiosensitivity and chemosensitivity in glioma stem cells
Jiarong CHEN ; Quanquan SUN ; Tian ZHANG ; Yanmeng LU ; Yawei YUAN
Journal of International Oncology 2014;41(6):405-407
The expression of microRNA (miRNA) is closely related to radio-chemosensitivity in glioma stem cells (GSCs).Moreover,the growth of glioma stem cells could be inhibited comprehensively by increasing radio-chemosensitivity and apoptosis,simultaneously with the regulation of a single miRNA,which has been confirmed by some researches.Thereby microRNA is prospective for the adoption as a specific agent in targeted therapy of glioma,so as to increase the radio-chemosensitivity in glioma stem cells.
6.Footwear sole hardnesses and plantar pressure during human walking
Yawei SONG ; Yixi CAI ; Hengjing KOU ; Yufei HUA ; Wen SUN
Chinese Journal of Tissue Engineering Research 2009;13(46):9113-9116
BACKGROUND:The comfortable shoes can absorb or reduce the impact force from the ground. Is the damped system is absent in shoes to relieve the impulse,the feet will be extremely tired,even damage the human knee joint,waist,back and brain. OBJECTIVE:To measure the changes of human plantar pressure by different sole hardness through the measurement system of plantar pressure. DESIGN,TIME AND SETTING:An observation experiment was performed in the Shanghai University of Sport between December 2008 and February 2009.PARTICIPANTS:Six volunteers wearing the experimental designed shoes were recruited from Nanjing Institute of Physical Education.METHODS:Three pairs of experimental shoes weighing 103 g were measured with shore hardness tester,as 51,62 and 69 hardness values. Accordingly they were named soft shoes,medium hardness shoes and hard shoes. The subjects were asked to do a 60-minute walk test at the speed of 2 m/s on the running platform with the experimental designed shoes,and they were determined using the insole plantar pressure measurement system of German's Novel style series of Emed-pedar.MAIN OUTCOME MEASURE:The pressure,contact area and impulse in the sole of foot.RESULTS:With the increase in hardness soles,the pressure of center plantar was shown to move from the medial first metatarsal outwards by turns. Compared with barefoot walking,the trail length of the center plantar was prolonged in subjects with medium hardness shoes and hard shoes,while shortened in subjects with soft shoes. The total pressure when you walked with soft shoes and medium hardness shoes were reduced than barefoot walking,and the pressure of walking phase wearing these two types of shoes were also reduced,while total pressure and walking phase pressure with hard shoes were both increased compared with barefoot walking. The contact area was similar between soft shoes and medium hardness shoes,but the smallest in the hard shoes. Except the increase in the initial 10 minutes,the soft shoes had no change with the medium hardness shoes. The hard shoes were firstly increased but then declined. The total impulse of medium hardness shoes was the closest to bare feet,while that of soft shoes and hard shoes were increased compared with bare foot.CONCLUSION:The plantar pressure was the greatest in the hard shoes,then medium hardness shoes and last soft shoes;the contact area was the greatest in soft shoes,then medium hardness shoes and last hard shoes;the impulse was the greatest in hard shoes,then soft shoes,and last medium hardness shoes.
7.Clinical treatment of 368 sepsis patients induced by severe surgical abdominal infection
Maoxing YUE ; Yaxiong RONG ; Weihai SHI ; Guodu YANG ; Jianjun TANG ; Yawei SUN ; Chenglin LI ;
Chinese Journal of Emergency Medicine 2006;0(08):-
Objective To investigate and find a multiple treatment to reduce the mortality of sepsis patients induced by severe surgical abdominal infection.Methods While treating to severe surgical abdominal infection,inflammatory mediator bacteria,extoxin and endotoxin,immunity,dysfunction of microcirculation,nutrition and metabolism and the function of organs should be paid more attention on and considered as a whole.We also carried out 14 concrete treating measurement.Combined high dosage of anisodaminum and dexamethason were used in sbort-term.Bring forward nourishment support according to different stage of MODS and applying it in clinic could significantly reduce the companion syndrome.Oral administration of“JIE-DU-GU-BEN-TANG”which developed by our division could regulate the imbalance of immunity and inflammatory mediator.Results There were 46 patients died in 368 patients,mortality was 12.50%. Conclusion It was difficult to treat sepsis patients induced by severe abdominal infection and our new multiple treatment could significantly reduce the mortality of severe sepsis.
8.Improvement Effects of Zhuanggushenjin Capsules on Osteoporosis Induced by Retinoic Acid in Mice
Qing GUO ; Xiaoli SUN ; Lijuan LI ; Jiangye HAO ; Chonggao DUAN ; Yawei ZHOU
China Pharmacy 2016;27(16):2187-2189
OBJECTIVE:To investigate the improvement effects of Zhuanggushenjin capsules on osteoporosis induced by reti-noic acid in mice. METHODS:84 mice were randomly divided into normal control group,model control group,positive control group [Gushukang granules,5 g(crude drug)/kg] and Zhuanggushenjin capsules high-dose,medium-dose and low-dose groups [7.80,3.90,1.95 g(crude drug)/kg]. Except for normal control group,those groups were given retinoic acid(90 mg/kg)to induce osteoporosis model. 7 days after modeling,all drug groups were given relevant medicine intragastrically,normal control group and model control group given normal saline intragastrically ,once a day,for consecutive 14 days. ALP activity and the contents of cal-cium and phosphorus in serum and thigh-bone were determined. The body weight, the dry weight, length and diameter of thigh-bone were determined,and organ coefficients (spleen,testicle,ovarium and uterus) were calculated. RESULTS:Compared with normal control group,the activity of ALP in serum of mice increased in model control group,while the contents of calcium and phosphorus,body weight,length and diameter of thigh-bone decreased significantly;spleen coefficients increased,while testi-cle and uterus coefficients decreased(P<0.05 or P<0.01). Compared with model control group,the contents of calcium and phos-phorus increased in Zhuanggushenjin capsules groups,while spleen coefficient decreased;the activity of ALP in serum of mice de-creased in high-dose and medium-dose groups,while body weight,the length of thigh-bone,testicle and uterus coefficients in-creased;diameter of thigh-bone increased in high-dose group (P<0.05 or P<0.01). CONCLUSIONS:Zhuanggushenjin capsules can improve retinoic acid-induced osteoporosis in mice to certain extent.
9.Epidemiological Survey on Paragonimiasis in Ningbo City,Zhejiang Province
Guozhang XU ; Baozhen QIAN ; Liping YE ; Jienan ZHANG ; Feng LU ; Yawei SUN
Chinese Journal of Parasitology and Parasitic Diseases 1997;0(06):-
0.05).The infection rate in first intermediate host(snails), second intermediate host(crabs) and animal reservoir hosts was 0.05%(9/19 368), 31.1%(15 627/50 313) and 11.9%(52/438) respectively.Evidently, natural nidi for Paragonimus spp.still exist in Ningbo City.
10.Screening and identification of a novel small-molecule TNFβinhibitor
Yawei SUN ; Haiyan GONG ; Shannan CAO ; Peng LIU ; Haiyan ZHU ; Guangfeng GENG ; Yuanfu XU
Tianjin Medical Journal 2015;(9):961-964,1089
Objective To explore a novel and highly specific small-molecule TNFβinhibitor by using computer-aid?ed virtual screening and cell-based assays in vitro. Methods Computer-aided drug design and virtual screening were used to design and identify chemical compounds that targeted TNFβbased on the crystal structure of the TNFβ-TNFR1 com?plex. The effect of the small-molecule compound against TNFβ-induced cytotoxicity of L929 cells was detected by MTT as?say, and the efficacy of the compound to inhibit TNFβ-induced apoptosis of L929 cells was determined by flow cytometry as?say. The impact of the compound on L929 cell cycle was examined by Propidium Iodide (PI) staining and flow cytometry, and the influence of the compound on TNFβ-triggered signal pathway was analyzed by Western blot assay and Ultra VIEW VOX 3D Live Cell Imaging System. Results No.35 compound (named as C35 thereafter) could effectively inhibit TNFβ-induced cell death in a dose dependent manner, and the half-maximum inhibition concentration (IC50) was 8.19μmol/L. Furthermore, C35 had lower cytotoxicity and minimal effect on L929 proliferation. Here we further revealed that C35 could affect TNFβ-induced apoptotic pathway by blocking the activation of Caspase 3, and markedly reduce L929 cell apoptosis induced by TNFβ. Conclusion A novel TNFβsmall-molecule inhibitor was identified by combining computer-aided virtual screening with functional assays, and which could block TNFβ-triggered apoptotic pathway and efficiently inhibit the cell death in?duced by TNFβ.