1.Approach of clustering ensemble in gene expression data based on Wavelet De-noising
Journal of Chongqing Medical University 2003;0(05):-
Objective:To provide the methodology reference for the gene expression data clustering.Methods:This paper proposed a fuzzy clustering ensemble algorithm based on wavelet de-noising.The new method is applied to the yeast cell's gene expression data,and the clustering results were compared with fuzzy ensemble clustering methods.Results:Apply micro-precision to evaluate the clustering results.The research indicated that the proposed method was superior to fuzzy ensemble clustering algotuthm.Conclusion:The proposed method has better clustering for the gene expression data clustering.
2.The study on the relation between omentin and coronary artery disease
Chinese Journal of Postgraduates of Medicine 2009;32(34):21-23
Objective To investigate the relation between omentin and coronary artery disease.Methods Eighty-eight eases were divided into 2 groups, coronary artery disease group (56 cases, includingacute coronary syndrome 28 cases and stable angina 28 cases), and non-coronary artery disease group (32cases). The plasma omentin levels were assayed by ELISA, and height, weight, blood pressure, totalcholesterol high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C),lriglyeeride (TG), high-sensitivity C-reactive protein were detected. Results The plasma omentin level incoronary artery disease group [(33.4 + 6.4) μg/L] was lower than that in non-coronary artery disease group [(51.8 + 7.7) μg/L](P= 0.034). Logistic analysis showed that the decline of omentin was an independent risk factor of coronary artery disease (P=0.012). Conclusions The decline of omentin is an independent risk factor of coronary artery disease. The plasma omentin may contribute, in part, to the pathogenesis of coronary artery disease.
3.Effect of CD95 system in the pancreatic cancer cells sensitivity to chemotherapy
Chinese Journal of Digestion 2001;0(02):-
Objective To explore the role of CD95 system in chemotherapeutic sensitivity of pancreatic cancer cells, in an attempt to enhance the efficacy of chemotherapy by transfection CD95 gene, and to provide the evidence for the immunological treatment of pancreatic cancer. Methods CD95 gene was transfected into the pancreatic cancer cell line SW1990 by lipofectamine. The transfected cells were selected by G418. CD95 expressions of the transfected cells were detected by Northern blot and Western blot. MTT assay was used to analyze the response of the transfected cells to 5 fluorouracil, adriamycin (ADM), gemcitabine and in combination with anti CD95 monoclonal antibody (mAb). The drug induced apoptosis of transfected cells was measured by flow cytometry. Results The transfected pancreatic cancer cell SW1990 could overexpress CD95 stably. The CD95 mRNA and protein expressions were significantly increased in the transfected cells than in the controls. Anti CD95 mAb could inhibit the growth of the transfected cells. In addition, transfected cells were more sensitive to clinically relevant concentrations of chemotherapeutic drugs than non transfected cells. Anti CD95 mAb addition could enhance the cytotoxic effect of chemotherapeutic drugs. Drug induced apoptosis in ADM treated transfected cells more pronounced than in non transfected cells. Conclusions CD95 transfection could increase the sensitivity of pancreatic cancer cell SW1990 to, and partly reverse the resistance to, chemotherapeutic drugs. The combination of chemotherapeutic drugs with anti CD95 mAb showed a synergistic cytotoxicity to pancreatic cancer cells.
4.The Effect of Different Target Concentration of Remifentanil on Heart Rate Variability
Journal of Medical Research 2006;0(03):-
Objective To evaluate the effect of remifentanil on heart rate variability,to discuss the optimal does of remifentanil for tracheal intubation.Methods Thirty six ASA Ⅰ~Ⅱ patients were randomly assigned to one of three groups(n=12/group)according to the remifentanil target plasma concentration(2、4、6ng/mL).No premedication was given.The target-controlled infusion(TCI)of renifentanil was initiated 5 minutes after the TCI of propofol given at the target plasma concentration of 3.5?g/mL.Mean arterial pressure(MAP),heart rate(HR),HF,LF,HF/LF were measured from baseline values to 5 minutes after the operation began every minutes.MAP,HR,HF,LF and HF/LF were obtained on the time point as follows:before the induction(T0),before the start of remifentanil TCI(T1),before laryngoscopy(T2),and maximum values after intubation(T3),before operation(T4),maximum values after operation.All the data obtained were analyzed used ANOVA with SPSS 11.5 statistical software.P
5.Comparison of Corilagin Molecular Imprinting Polymers Prepared with Two Kinds of Functional Monomers
Journal of Guangzhou University of Traditional Chinese Medicine 2004;0(06):-
【Objective】To optimize the functional monomers which is used for the synthesis of Corilagin molecular imprinting polymer.【Methods】The chromatographic characteristics of Corilagin molecular imprinting polymers synthesized respectively by functional monomers of ?-methacrylic acid(MAA)and acrylamied(AA)were investigated with HPLC,and the imprinting efficiency of the two kinds of polymers on Colilagin template were compared.【Results】The polymer with AA as the functional monomer had a higher imprinting efficiency than the polymer with MAA as the functional monomer.【Conclusion】AA is the optimal functional monomer for the synthesis of Corilagin molecular imprinting polymer.
6.Several proteins involved in absorption of cholesterol in small intestine
Military Medical Sciences 2015;(6):472-475
Several proteins are involved in the absorption of cholesterol in small intestine.Niemann-Pick C1 like 1 (NPC1L1) mainly mediates the absorption of cholesterol, and acyl-coenzyme A ( CoA)∶cholesterol acyltransferase 2 (ACAT2) catalyzes the free cholesterol absorpted by intestine into cholesterol ester,while unesterified free cholesterol is secreted into intestinal lumen by ATP-binding cassette(ABC) transporters G5/G8(ABCG5/ABCG8).Transcription factor liver X receptor( LXR) plays an important role in the process of intestinal cholesterol absorption.The research progress in NPC1L1,ABCG5/ABCG8,ACAT2 and LXR is reviewed in this article.
7.Comparative study on physician training system between China and the United States
Chinese Journal of Medical Education Research 2013;(12):1278-1281
Graduate medical education, postgraduate medical education and continuing medi-cal education between China and the United States were compared in order to explore a better physi-cian training system of China. The physician training system of the United States has a series of ad-vantages such as strict access system, uniform training standard and closely linked among each stage, etc. We should make clear medical education standards and strengthen the cohesion between each stage, standardize the management mode and perfect the management system and promote regular as-sessment system.
8.Construction and application of monitoring platform for medical response to nuclear or radiological emergency
China Medical Equipment 2014;(6):7-10
Objective: In order to implement effectively on-scene medical response to a nuclear or radiological emergency, and also keep track of relevant on-scene audio and video information and monitoring data, we have designed and developed a monitoring platform for medical response to nuclear or radiological emergency. Methods:Based on relevant national standards for emergency response and the features of nuclear or radiological emergency, exploiting modern information technology and monitoring equipments, we formulate the design idea, characteristics, functions and framework of the platform. This platform takes treatment centers for nuclear or radiological injuries, designated medical institutions and medical response teams as main users. Results:We have developed the monitoring platform for medical response to nuclear or radiological emergency. Conclusion:Through the application of this platform, we hope to enhance the preparedness and on-scene response capability for nuclear or radiological emergency, and also provide information support for disposal of nuclear or radiological emergency in the future.
9.The analysis of echocardiogram in 166 cases of senile degenerative heart valvular diseases
Chinese Journal of Geriatrics 2003;0(09):-
Objective To evaluate the characteristics of echocardiogram in senile degenerative heart valvular disease. Methods The cardiac structure and functional changes of the 166 cases of senile degenerative heart valvular diseases were studed with HP5500(USA) and En Visor color doppler(Philips). Results Simple aortic valve calcification was found in 93 cases(56.0%); simple mitral calcification, 18 cases(10.8%);aortic valve calcification combining mitral calcification, 55 cases,(33.1%);enlarged left atrium 116 cases(69.9%);left ventricular diastolic dysfunction 142 cases(85.5%).Within 136 cases of cardiac valve dysfunction, there was aortic valvular regurgitation in 70 cases(42.2%),stenosis of aortic valve in 23 cases(13.9%),mitral regurgitation in 20 cases(12.2%),mitral stenosis in 8 cases(4.8%),aortic valvular regurgitation combining stenosis in 10 cases(6.0%),mitral regurgitation combining stenosis in 5 cases(3.0%). The highest morbidity in valvular dysfunction was aortic valvular regurgitation(42.2%),the second was aortic valve stenosis(13.9%),the lowest morbidity was mitral stenosis combining insufficiency(3.0%). Enlarged left atrium was in 116 cases(69.9%). Conclusions The senile degenerative heart valvular disease have no specific clinical manifestation. With increasing age,the proportion of complex valve calcification is increased, and the highest is the aortic insufficiency in valvular dysfunction. The proportion of enlarged left atrium is also increased.
10.Clinical effects of epidural labor analgesia with second stage continuous background infusion
The Journal of Clinical Anesthesiology 2016;32(12):1158-1161
Objective To investigate the analgesic effect of epidural labor analgesia with contin-uous background infusion and its impact on obstetric outcome.Methods This was a retrospective co-hort study.In the two months of march 2014 and march 201 5,503 nulliparas women who had re-ceived epidural analgesia for labor were enrolled and assigned to two different study groups according to their analgesic protocol.Two hundred and fifty-eight nulliparas in group C received only patient-controlled analgesia while two hundred and forty-five nulliparas in group P received patient-controlled analgesia with continuous background infusion.The basic and perinatal data of all enrolled nulliparas women were collected and analyzed to compare the analgesic effect and the impact on obstetric risk of two different analgesic protocol.Results The NRS pain score during the second labor stage was lower in group P [3 (3-4)scores vs.5 (4-5)scores](P <0.001).The second stage prolonged [50 (29-82) min vs.38 (24-62)min](P =0.001)and intrapartum hemorrhage increased [200 (100-250)ml vs. 1 50 (100-200)ml](P =0.003)in group P.There were no significant differences between the two groups with regard to the delivery mode (P =0.656)and the morbidity of postpartum hemorrhage (9.8% vs.10.9%,P =0.697).Analgesic protocol with background infusion was not associated with postpartum hemorrhage,instrumental delivery risk and cesarean risk.Conclusion Epidural labor an-algesia with continuous background infusion provided more effective analgesia in nulliparas,without additional obstetric risk.