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.Effect of insulin combined with selenium on PI3K and GLUT4 expression in cellular signal transduction of skeletal muscle in diabetic rats
Chinese Journal of Tissue Engineering Research 2010;14(7):1213-1217
BACKGROUND: PI3K is a family of enzymes involved in insulin signal transductlon pathway, the abnormal expression of which would affect synthesis, secretion, and migration of GLUT4, therefore, results In increased blood sugar, eventually, leads to diabetes.OBJECTIVE: To discuss the effects of insulin combined with selenium on PI3K and GLUT4 expression in cellular signal transduction of skeletal musde in diabetic rats.METHODS: Sprague Dawley (SD) rats were randomly divided into the control, diabetic, insulin-treated diabetic, selenium-treated diabetic and combination administration groups. All rats were prepared for diabetic models by injecting 50 mg/kg Streptozocin exception of the control group. Rats in the control and diabetic groups ware free to food and water; in the insulin treatment group,rats were subcutaneous injected 1 U/(kg·d) insulin. Rats in the selenium treatment group ware treated with a dose of 180 pg/kg per day of sodium selenite dissolved in redistilled water by gavage; and in the combination administration were given both treatments for 4 successive weeks. The levels PI3K end GLUT4 in skeletal muscle were estimated using Western blotting and immunohistochemistry techniques.RESULTS AND CONCLUSION: Immunohietochemistral results were accordance to Western blotting results, which showed the combination of insulin and selenium can remarkable Increase the levels of PI3K in skeletal muscle and GLUT4 in skeletal muscle membrane fraction, therefore, enhance the insulin signal transduction pathway.
3.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.
4.Analysis calcium in serum of the patients with blood culture positive
International Journal of Laboratory Medicine 2016;37(20):2847-2848,2851
Objective To retrospectively analyze of blood culture positive for adult patients with serum calcium concentration ,to understand the relationship between bloodstream infections in patients and serum calcium .Methods From January 2013 to July 2015 ,serum calcium (Ca) ,phosphorus (P) ,alkaline phosphatase (ALP) in 78 cases with the blood culture positive adult patients and 103 healthy subjects were detected and analyzed .Results The value of CA in adult patients was(1 .89 ± 0 .18) mmol/L ,healthy subjects while of that was (2 .23 ± 0 .23)mmol/L in healthy subjects ,There was statistically significant (P<0 .01) in two groups ;The P of patients was (1 .23 ± 0 .24)mmol/L ,which in healthy subjects was (1 .25 ± 0 .28)mmol/L ,There was no statistical differ‐ence (P>0 .05);ALP of patients was (78 ± 42)U/L ,which was (76 ± 40)U/L in healthy subjects .There was no statistical differ‐ence (P>0 .05) ,the r of Ca and P ,Ca and ALP were 0 .023 ,0 .023 respectively (P>0 .05) in patients ,while there were 0 .125 and 0 .132 (P<0 .05) in healthy subjects .Conclusion Calcium in serum of adult patients with blood culture positive might be reduced .
5.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.
6.Study on the Influence of Cellulase on the Extraction Rate of Medlar Total Saccharide in Medlar by Sphere Symmetry Design
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(08):-
Objective To study the effect of cellulase on the extraction rate of medlar total saccharide, considering three factors of temperature, time and quantity of cellulose. The best extracting condition was determined according to the require of sphere symmetry design. Methods Add cellulase liquid into the medlar slurry and determine the content of medlar total saccharide by DNS method. Result The extraction rate of medlar total saccharide was increased 1.66% by cellulase at temperature of 60 ℃, time of 300 s and cellulase volume of 5 mL. Conclusion Cellulase can promote the extraction rate of medlar total saccharide.
7.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.
8.Effect of Ghrelin on contractility of gastric smooth muscle in guinea pigs and the related mechanism
Academic Journal of Second Military Medical University 1981;0(03):-
Objective:To investigate and compare the influences of Ghrelin and growth hormone releasing peptide 6(GHRP-6) on the contractility of stomach smooth muscle in guinea pigs,and to study the related mechanism.Methods: The myenteric plexuses of gastric fundus and antrium in guinea pigs were stimulated with electrical field stimulation(EFS) to observe the influence of Ghrelin and GHRP-6 on the contractility of stomach smooth muscle.The influences of N-nitro-L-arginine(L-NNA) and L-Arginine(L-AA) on the effect of Ghrelin and GHRP-6 were studied to disclose the mechanism of the effects of Ghrelin and GHRP-6.Results: The circular muscle tissues of the gastric fundus generated on-relaxations and off-contractions when stimulating myenteric plexuses with 1-16 Hz electrical field;the on-responses induced relaxation could be reduced by L-NNA and the off-contractions induced contraction could be blocked by atropine and guanethidine.In fundic strips,ghrelin and GHRP-6 could decrease the on-response induced relaxation and increase off-response induced contraction of the muscle,with the effect of Ghrelin obviously stronger than that of GHRP-6.L-NNA could increase the effects of Ghrelin and GHRP-6-induced muscle contraction,and L-AA could decrease their effects.In the antral strips,electrical field stimulation of myenteric plexuses led to disappearance of relaxation wave,only leaving off-contractions.Both ghrelin and GHRP-6 could increase that contraction.Conclusion: Both ghrelin and GHRP-6 can promote the contractility of stomach smooth muscle in guinea pigs through stimulating myenteric plexuses of gastric fundus and antrium,which might be related to the NO pathway.
9.Study on the index system for training evaluation of national health emergency response
Chinese Journal of Disease Control & Prevention 2009;0(01):-
Objective To research and develop an index system for training evaluation of national health emergency response.Methods A combinative approach was applied,including core expert group discussion,on-site investigation into parameters applied in Delphi assessment by field experts,national reviews by provincial health departments.Results Firstly,a framework of index system was constructed by core expert group based on literature;Secondly,the index was screened by mean score from field experts' investigation and suggestion of core experts,then an index system was formulated with 5 first level indexes,19 second level indexes and 46 third level indexes;Thirdly,index weight was determined according to the mean weight by field experts investigation and adjusted suggestion of core experts;Finally,the index system for training evaluation of national health emergency response was approved by Ministry of Health and applied to the whole nation.Conclusions The combinative approach is practical in research and developing index system.The index system covers a full range of related factors,and is applicable at provincial level.However,attention should be paid to improving training after evaluation.
10.Clinical application of atomoxetine in children with attention deficit hyperactivity disorder
Journal of Clinical Pediatrics 2009;(11):1093-1094,1100
Atomoxetine as a nonstimulant medicine was approved by the Chinese Food an Drug Administration and provide a new selection of treatment drugs for attention deficit hyperactivity disorder (ADHD). Tomoxetine is a noradrenaline transmitter reuptake inhibitor which can selectively inhibit synapsis noradrenaline transport protein, strengthen noradrenaline's resupination effect, and increase noradrenaline's activity released by synaptic cleft to improve the symptoms of the ADHD patients. Compared with methylphenidate, atomoxetine does not affect the concentration of the neurotransmitter dopamine and does not induce or increase the Tourettes' syndrome, therefore atomoxetine is more suitable to treat ADHD together with Tourettes syndrome. In this article the treatment of atomoxetine for ADHD, including the indications, dosage as well as adverse reactions and efficacy assessment are reviewed.