1.Influence of basic fibroblast growth factor on tissue repair and reconstruction after fracture
Chinese Journal of Tissue Engineering Research 2007;0(33):-
BACKGROUND: Basic fibroblast growth factor (BFGF) widely in human tissue participates in trauma repair of various tissues and is one of wound healing factors in the body. OBJECTIVE: To summarize the progress of BFGF in the fracture healing. RETRIEVAL STRATEGY: A computer-based online search of Pubmed Database was undertaken to identify the relevant articles on BFGF in the fracture healing published from January 2000 to December 2007 with the Keywords of "fibroblast growth factor 2 (basic fibroblast growth factor), fracture healing, regulation, signal transduction" in English. At the same time, Chinese relevant articles were searched in China Journal Full-text Database (CJFD) and Wanfang Database published between January 2000 and December 2007 with the same key words in Chinese. Exclusive criteria included articles with repetitive research and non-original study. LITERATURE EVALUATION: A total of 33 articles were collected about the distribution (3 articles), biological characteristics (3 articles) and the effect on the healing of bone fracture (27 articles) of BFGF. DATA SYNTHESIS: Bone healing is the process of regeneration after bone injury and the process of bone formation. BFGF can promote the cell migration by its chemotaxis and accelerate the healing by aggregating mesenchymal stem cells, macrophage and fibroblasts towards trauma region. Present animal studies on BFGF are deep and reports on clinical application are a few. Thus, the effect of BFGF is available. BGFG can affect bone formation by adjusting cell prolifeation and differentiation and changing the synthesis of cell products. BGFG not only can promote the bone growth, but also enhance the adhesion of osteoblasts and scaffold. CONCLUSION: The distribution and biological characteristics of BGFG have been recognized primarily. The further study on modulatory mechanism in the fracture healing of BFGF is carrying through. The bone restoration compounded by BFGF and its carriers is in the experiment and needs to be studied further.
2.Application of FMEA ia medical risk management in America
Bi-Yao LIU ; Yi SHEN ;
Chinese Journal of Hospital Administration 1998;0(11):-
Doing a good job of guarding against medical risks can effectively improve medical safety and reduce waste of medical resources. In recent years, marked results have been attained in the US in studies on the use of FMEA, a prospective quality analysis tool, to minimize medical risks. Similar studies, though not many, have been made in some other countries, such as Italy and Australia. No reports, however, have been published at home on studies in this field. The paper gives an account of the use and theoretical studies of FMEA in medical risk management in the US, illustrates cases wherein it was used to lower risks in prescribing drugs to patients and ensure the safe use of hospital software and hardware, and puts forward issues that shouldn't be ignored in using FMEA so as to arouse the attention of domestic hospital management departments.
3.The effect of new-onset diabetes after renal transplantation on arterial stiffness
Hang LIU ; Yi SHI ; Zhongyang SHEN
Chinese Journal of Organ Transplantation 2009;30(7):415-418
Objective To investigate the risk factor for new-onset diabetes after transplantation (NODAT) and the relationship between NODAT and arterial stiffness. Methods Oral glucose tolerance test (OGTT) was performed on 195 patients with renal transplantation. The degree of arterial stiffness, which was determined by brachial ankle pulse wave velocity (baPWV), anklebrachial blood pressure index (ABPI) and intima-media thickness (IMT) of the carotid artery, was evaluated. Results Twenty-nine patients diagnosed as NODAT had significantly higher fasting plasma glucose before transplantation, blood pressure and incidence of hepatitis C virus (HCV) infection than in patients without NODAT. Multivariate regression analysis revealed that the risk factor of NODAT was fasting plasma glucose pre-transplantation, HCV infection and systolic blood pressure.The independent determinant of the advanced arterial stiffness on NODAT was the statement of hypertension and age. Conclusions High fasting plasma glucose prior to transplantation, HCV infection and high blood pressure are risk factors for NODAT in patients after renal transplantation.Strict control of blood pressure is the key way to prevent the NODAT and atherosclerosis.
4.Financial performance indexes of Beijing municipal hospitals and their role in hospital operation manage-ment
Jianmin LIU ; Yi SHEN ; Ying ZHOU
Chinese Journal of Hospital Administration 2015;(7):534-537
With the advancement of the health reform and development of medical services,and performance evaluation of fine management,have become a major means to regulate medical services, improve quality of medical services, and promote healthy functioning of hospitals. The Hospital Authority worked out the performance evaluation standards for municipal hospitals. Setup of such financial evaluation indices as cost control rate,basic operation and healthcare materials for 10 000 yuan medical revenue,per-capita income and expenditure balance,implementation of fiscal input,and asset turnover.Finance and asset management of municipal public hospitals were subject to a general assessment and comparative analysis. Assessment results were linked to the hospital ’s annual performance bonuses.This enables the financial indicators and assessment to play a key role for hospitals to reduce costs,improve efficiency and strengthen fine management. Hospitals were encouraged to achieve balanced income and expenditure, surpluses, asset efficiency, performance budgeting, cost controls,decent financial operations.
5.Design, synthesis and antidiabetic activity of novel tetrahydrocarboline PPAR regulators.
Kun PENG ; Yi HUAN ; Quan LIU ; Zhufang SHEN ; Zhanzhu LIU
Acta Pharmaceutica Sinica 2014;49(4):490-6
A series of novel tetrahydrocarboline derivatives was designed and synthesized in order to discover more potent peroxisome proliferator-activated receptor (PPAR) alpha/gamma dual regulators. The structures of these compounds were confirmed by 1H NMR and HR-MS; their PPAR-regulating activities were evaluated in vitro. Compounds 6h, 6n, 6p and 6q exhibited more potent PPARalpha agonistic activities than the control drug WY14643, while compounds 60, 6g, 6i and 6q exhibited more potent PPARgamma agonistic activities than the control drug rosiglitazone. Compound 6q was discovered as a potent PPARalpha/gamma dual agonist and deserves further investigation.
6.Formula Screening and in vitro Drug Release of Tegafur Thermo-sensitive Gel for Intratumor Injection
Jingjing SHEN ; Aiping DENG ; Hong LIU ; Yi WANG ; Jue LIU
China Pharmacist 2016;19(9):1656-1659
Objective:To screen the best formula of tegafur temperature-sensitive gel for intratumor injection and investigate the in vitro drug release behavior. Methods:The drug dose was determined by cytotoxicity experiment. The thermo-sensitive gel was prepared with PLGA-PEG-PLGA and HPMC as the matrix. With the in vitro release as the index, the effects of PLGA-PEG-PLGA and HPMC at different concentrations on gel were investigated. The gelation temperature, viscosity and pH were detected. Results:The best formula was as follows:25% PLGA-PEG-PLGA, 1% HPMC, and tegafur dose of 1 mg·ml-1 . The average gelation temperature was 36. 7℃, the average viscosity was 7550 mPa·s, and the average pH was 7. 2. Conclusion:Tegafur thermo-sensitive gel for intratumor in-jection shows temperature sensitivity and obvious sustained-release property, which provides experimental basis for the further clinical research.
7.Study on the mechanism of developing hyperglycemia in monosodium glutamate induced obese mice with insulin resistance
Caina LI ; Ning SHEN ; Shuainan LIU ; Quan LIU ; Yi HUAN ; Sujuan SUN ; Zhufang SHEN
Chinese Journal of Endocrinology and Metabolism 2010;26(9):799-802
The blood insulin levels of insulin resistant monosodium glutamate induced mice (IR-MSG)and hyperglycemic monosodium glutamate mice (HG-MSG) markedly increased ( P<0. 01 ), and the weight index of pancreas significantly decreased ( P<0. 01 ), accompanied with overt inflammatory infiltration in the exocrine part of pancreas. Besides, insulin and glucagon in the islets also markedly increased with irregular distribution ( P<0.01 ). Compared to IR-MSG mice, HG-MSG mice showed overt hyperglycemia and much lower blood insulin. Moreover, the weight of pancreas in HG-MSG mice markedly decreased ( P < 0.05 ), along with less insulin and more glucagon in the lessened and contracted islets, suggesting that the injury of pancreas in the HGMSG mice might be more severe, which may result in hyperglycemia.
9.Reconstruction of truck balance function in severe scoliolosis patients with Marfan syndrome
Yi SHEN ; Zude LIU ; Zhanchun LI ; Zhanyu LI
Chinese Journal of Tissue Engineering Research 2006;10(32):166-168
BACKGROUND: Most of the scoliolosis patients with Marfan syndrome are young, and in the growth and development period. Scoliosis develops rapidly, so a great number of patients need operation. Many patients accompanied with severe cardiorespiratory disfunction, which brings about a great difficulty for operation.OBJECTIVE: To observe the effect of CD orthosis on spinal function of patients with Marfan syndrome.DESIGN: A self-control observation.SETTING: Department of Orthopaedics, Renji Hospital Affiliated to Medical College, Shanghai Jiao Tong University (i.e. Shanghai Second Medical University).PARTICIPANTS: A total of 8 severe scoliolosis patients with Marfan syndrome who were treated at Department of Orthopaedics, Renji Hospital Affiliated to Medical College, Shanghai Jiao Tong University (i.e. Shanghai Second Medical University) were enrolled from May 1999 to July 2003. Of them, there were 2 one-side curvatures, 6 two-side curvatures; 4 cases of cardiorespiratory function lost lightly, 2 cases midrange lost. Mean Cobb angle was 88°.METHODS: The patients were at prone position under general anesthesia.Incision was made at middle posterior after fixing the position. Erector spinal muscle beneath periosteum was stripped and vertebral plate to transverse process root was revealed. Claws or nails were used in multiple segments of vertebrae by CD orthosis such as CD, CD-Horison, TSRH, USS and so on.MAIN OUTCOME MEASURES: Changes of Cobb angle, height, grafting bone fusion and cardiorespiratory function of patients after operation.RESULTS: After 12-month follow-up, 8 patients were involved in the result analysis. The incision of 8 patients was healed, no infection. Scoliolosis was corrected effectively, and the height increased by 5-8 cm. Cardiorespiratory function recovered satisfactorily after operation. Grafting bone was fused. The lost Cobb's angle was less than 25° after correction.CONCLUSION: CD orthosis can correct the lateral curvature and effectively correct that of patients combined with rotational deformity, consisting of large distraction, multiple segment frame style fixation, average distributed force placement, so it is not easy to have the complications such as release, broken stick and so on. Selective multiple segment fixation and derotation are adopted, so good three-dimension correction is gained, which can reconstruct satisfactorily trunk balance, prevent post-operative loss,with less complication, high fusion rate, less correction lost. External fixation is not needed after operation, which is helpful for early rehabilitation.
10.The Assembly of a Novel Enzyme Biosensor for Aflatoxin B_1 Detection
Da-Ling LIU ; Yi SHEN ; Jing ZHANG ; Dong-Sheng YAO ;
China Biotechnology 2006;0(03):-
A novel biosensor for aflatoxin B1 detecting has been reported. The biosensor electrode for AFB1 detecting was assembled by immobilized aflatoxin-oxidoreductase using open-ended multi-walled carbon nanotubes as matrix. Its linear range was between 0.16?M and 3.2?M. And if the specific anti-aflatoxin B1 antibody and aflatoxin oxidoreductase were both immobilized on the electrode with Multi-Walled carbon nanotubes, the detection limit of the modified electrode could be 16 nM with a 10 times improved sensitivity. The aflatoxin enzyme biosensor assembled this way strode one step forward its practical application.