2.Relativity between serum vascular endothelial growth factor and its receptors and uterine myoma
yi-cun, ZHONG ; wei-ping, LI ; chuan-wei, DING
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(12):-
Objective To study the relativity between serum vascular endothelial growth factor(sVEGF),its receptors(sVEGFR1 and sVEGFR2) and uterine myoma. Methods Thirty hospitalized patients with uterine myoma were chosen as the study group and the other healthy women of the same age as control group.The levels of sVEGF,sVEGFR1 and sVEGFR2 of the two groups were determined by using ELISA technology. Results The levels of sVEGF and sVEGFR2 in the study group were much higher than in the control group(P0.05).The levels of sVEGF and sVEGFR2 in women with myoma had no differences during the menstrual cycle.The level of sVEGFR2 was correlated with the number of myoma(P
3.Effect of magnitude and duration on the performance of Cumulative Sum
Ding-Lun ZHOU ; Wei-Zhong YANG ; Ya-Jia LAN ; Zhong-Jie LI
Chinese Journal of Epidemiology 2012;33(6):617-621
To explore the effect of magnitude and duration on the performance of Cumulative Sum (CUSUM),with simulation method used on the subject after the insertion of 11 outbreak events into baseline data with Poisson distribution.Sensitivity fluctuated from 9.1% to 100.0% with specificities higher than 98.6%.Sensitivity was significantly correlated with magnitude,and increased along with the increase of magnitude.However,no significant correlation was observed between sensitivity and duration.A magnitude which was at least 2.6 times higher than that of the mean daily baseline could result in the sensitivity of 100.0%.Time-lag would be improved along with the increase of magnitude.Time between onset and detection of an outbreak was no longer than one day when magnitude was more than 1.8 of the mean daily baseline.In summary,the performance of CUSUM was influenced by magnitude,but not by duration.CUSUM had the advantage of good time-lag and high sensitivity when the outbreak magnitude was more than 2.4 time over the baseline data.
4.Effect of FTY720 inhibiting corneal neovascularition induced by sphingosine 1-phosphate
Fan, ZHONG ; Xiao-Zhen, DING ; Wei-Zhong, YANG ; Zong-Yin, GAO ; Xiao-He, LU
International Eye Science 2015;(7):1134-1138
AlM: To explore the inhibiting effect of FTY720 on corneal neovascularization ( CNV) of rat.METHODS: MTT assay and cells scratch were adopted to observe hyperplasia of human umbilical vein endothelial cells ( HUVECs ) and cell migration induced by sphingosine-1-phosphate(S1P) after using FTY720 of different concentration. The effect of FTY720 on CNV induced by S1P in a rat corneal micropocket model was detected. 30SD rats were randomly divided into group A, group B and group C with 10 rats per group. S1P and 0μg, 5μg, and 20μg FTY720 controlled-released particles were implanted into the corneal stroma. The growth of CNV and having pathological examination on 12d after the operation was observed. Findings was analyzed by one-way ANOVA.RESULTS: 10, 102 , 103 , and 104 nmol/L FTY720 and HUVECs co-incubate 72h could inhibit cell proliferation (P < 0. 01 ), 24h after the function of 10, 100nmol/L FTY720, it could inhibit S1P-induced cell migration and the ability of restricting cell proliferation and cell migration was enhanced with increasing concentration of FTY720. On 12d, after rat corneal micropocket controlled-release particles was implanted into groups A, B, C, the CNV area were respectively 10. 05±1. 19, 6. 59±0. 95, 2. 70± 0.68mm2(F=145. 155, P<0. 01), group A and group B was statistically different and this was the same case between group B and group C (P<0. 01).CONCLUSlON:FTY720 can inhibit S1P-induced corneal neovascularization.
5.Effects of probiotics on the gut flora and mucosal tumor necrosis factor?expression in rats with experimental colitis
Wei LIU ; Wei-Qun DING ; Lan RONG ; Liang ZHONG ; Yibin JIANG ;
Chinese Journal of Digestion 2001;0(12):-
Objective To evaluate the effects of probioties on inflammation,intestinal flora and mucosal tumor necrosis factor alpha(TNF-?)expression in experimental colitis rats.Methods Thirty Wistar rats were randomly divided into normal control group(NC),model control group(UC),and pro- biotics treatment group(PC).The experimental colitis were induced by trinitrobenzene sulfonie acid (TNBS)/ethanol enema.Rats in PC group were fed with Bifico[live probiotics of combined bifidobacte- rium(Bif),lactobacillus (Lac) and enterococcus]by 2.2?10~9 colony-forming unit (CFU)/d for 4 weeks.Inflammatory scores and mucosal morphological changes under light microscopy were studied. Plasma endotoxin levels,expressions of TNF-?and interleukin-6 (IL-6) in mueosa were measured. Enteric microorganisms in cecum were fostered with standard methods.Results Inflammatory scores in PC group decreased compared with those in UC group(7.94?0.85 vs 10.25?1.36,P<0.05),but still higher than those in NC group(7.94?0.85 vs 4.35?0.88,P<0.01).There was a significant alteration in the enteric microbial flora,Bif and Lac were decreased significantly in UC group,Bifico supplement ameliorated this imbalance.Plasma endotoxin and mucosal TNF-?levels in PC were lower than those in UC group[endotoxin:(93.33?21.22)pg/ml vs (121.25?39.07)pg/ml;TNF-?:67.51?14.63 vs 85.99?18.17,P<0.05],but higher than those in NC group[endotoxin:(93.33?21.22) pg/ml vs(35.20?15.12)pg/ml;TNF+?:67.51?14.63 vs 43.28 4?19.98,P<0.01].There was no statistically significant difference in mucosal IL-6 levels between PC group and UC group,though its level in PC group was lower than that in UC group(155.22?34.01 vs 184.09?29.11,P>0.05),but higher than that in NC group(155.22?34.01 vs 108.73?37.35,P<0.01).Conclusions Probiotics can attenuate inflammation of experimental colitis of rats through reinstituting gut flora bal- anee.Improving gut flora imbalance,reducing endotoxin and pro-inflammatory cytokines may be the effects of probiotics.
6.Expression of Toll-like receptor 2 and 4 on colons of experimental colitis rats and the therapeutic effects of probiotics
Wei LIU ; Lan RONG ; Wei-Qun DING ; Yibin JIANG ; Liang ZHONG ; Dayu SUN ;
Chinese Journal of Digestion 2001;0(12):-
Objective To investigate the protein and mRNA expressions of Toll-like receptor 2 (TLR2) and Toll-like receptor 4 (TLR4) on colons of rats with trinitrobenzene sulfonic acid (TNBS)- induced colitis,and to evaluate the effects of probiotics.Methods Thirty male Wistar rats were randomly divided into normal control group (NC group),model control group(UC group) and probiotics-treated group(PC group).The experimental colitis was induced by TNBS/ethanol enema.Rats in PC group were fed with Bifico [live probiotics of combined hifidobacterium(Bif),lactobaeillus(Lac) and enteroeoccus] by 2.2?10~9 CFU/d for 4 weeks.Inflammatory scores were studied.Expressions of protein and mRNA of TLR2 and TLR4 were measured by Western blot and real-time quantitative polymerase chain reaction (PCR),respectively.Results Inflammatory scores in NC group,UC group and PC group were 4.35?0.88,10.25?1.36 and 7.94?0.85,respectively.The inflammatory scores in PC group were decreased compared with that in UC group (P
7.The Establishment of an Anti-Trypanosoma Drug Screening System with Leucyl-tRNA Synthetase as an Inhibition Target
Guang-Wei GAO ; Ying YAO ; Da-Zhong DING ; Long YE ; Hu-Chen ZHOU ; Da-Wei LI ;
China Biotechnology 2006;0(12):-
Trypanosoma is a human parasite severely affecting poor tropical areas.However,current frontline drugs for Trypanosoma treatment have severe side-effects with decreased effectiveness.Based on the fact that aminoacyl-tRNA synthetase is a bonafide drug target for several microorganisms,including bacteria and fungi,it is plausible that it may also be effective target of Trypanosoma.The Trypanosoma brucei leucyl-tRNA synthetase(tbLeuRS)was cloned,expressed and purified to develop an in vitro enzymatic assay system.The assay conditions were further optimized for the effective screening of tbLeuRS inhibitors thus establishing an anti-Trypanosoma drug screening system targeting tbLeuRS.The results indicated that this system can be employed for the effective screening of anti-Trypanosoma drugs with satisfactory specificity.In addition,this system can also be used for compound optimization,as well as IC50 testing.Using this system a series of compounds are identified that are effective Trypanosoma inhibitors without toxicity to human cells.Therefore,targeting tbLeuRS may represent a new venue for the development of anti-Trypanosoma drugs.
8.Study on effective substance basis and molecular mechanism of Qigui Tongfeng tablet using network pharmacology method.
Zhi-peng KE ; Xin-zhuang ZHANG ; Yue DING ; Liang CAO ; Na LI ; Gang DING ; Zhen-zhong WANG ; Wei XIAO
China Journal of Chinese Materia Medica 2015;40(14):2837-2842
Qigui Tongfeng tablet (QLTFT) is a traditional Chinese medicine with good effect for treating gout. Here, network pharmacology method and molecular similarity analysis were utilized to study the effective substance basis and molecular mechanism of the QLTFT on the gout. The similarity to the medicinal compounds is reflected in the Tanimoto coefficient that gives the structural similarity of two compounds. Operationally, similar modifiers were described as pairs of concepts with a similarity score of 0. 500. The results of the molecular similarity analysis suggested that the flavonoids in QLTFT could be new leads for gout. Furthermore, complex biological systems may be represented and analyzed as computable networks. Two important properties of a network were degree and betweenness. Nodes with high degree or high betweenness may play important roles in the overall composition of a network. And the results of network analysis showed that dongbeinine, verticinone-N-oxide, verticine N-oxide, peimine, peiminine, isobaimonidine, dongbeirine, peimisine and simi-arenol which with high degree acted on xanthine dehydrogenase/oxidase, matrix metalloproteinase-9, an arachidonate 5-lipoxygenase-activating protein, tyrosine-protein kinase and etc. Inhibition of these targets can prevent the formation of uric acid, reduce inflammation by uric acid and regulate the body's immune response. Thus, these compounds may be the main effective substance basis. The research results not only reveals its molecular mechanism, but also provide a theoretical basis for the quality control of drugs and clinical application.
Gout
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drug therapy
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Humans
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Medicine, Chinese Traditional
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Pharmacology
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methods
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Tablets
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Technology, Pharmaceutical
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methods
9.Study on contribution of main components in Guizhi Fuling capsule based on molecular imprinting technique and activity screening.
Ze-yu CAO ; Yue DING ; Zhen-zhen SU ; Na LI ; Liabg CAO ; Gang DING ; Zhen-zhong WANG ; Wei XIAO
China Journal of Chinese Materia Medica 2015;40(12):2420-2427
To clarify the active components in Guizhi Fuling capsule in treatment of intrinsic dysmenorrhea, pelvic inflammation and hysteromyoma, main components were gradually knocked out from the capsules, the effects of knockout capsules on uterine contraction, TNF-α secretion, murine splenocytes (SPL) and hysteromyoma cells proliferation were evaluated, respectively. The inhibition of capsules on uterine contraction was weakened by gradient knockout of paeoniflorin, paeonol, and amygdalin. The suppression of capsulte on TNF-α secretion was reduced by gradient knockout of gallic acid, cinnamaldehyde, pentagalloylglucose, and pachyman. The promotion of SPL cells proliferation was reversed by gradient knockout of gallic acid, paeoniflorin, cinnamaldehyde, quercetin, and pachyman. The depression of capsules on hysteromyoma cells proliferation was attenuated by gradient knockout of paeoniflorin, paeonol, pentagalloylglucose, and albiflorin. In conclusion, the compounds mentioned-above could be the key active basis of Guizhi Fuling capsule in treatment of intrinsic dysmenorrhea, pelvic inflammation and hysteromyoma.
Animals
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Capsules
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administration & dosage
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chemistry
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Cell Proliferation
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drug effects
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Drugs, Chinese Herbal
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administration & dosage
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chemistry
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Dysmenorrhea
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drug therapy
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metabolism
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physiopathology
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Female
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Humans
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Mice
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Mice, Inbred BALB C
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Molecular Imprinting
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methods
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Tumor Necrosis Factor-alpha
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metabolism
10.Investigation on monitor equipment utilization rate based on data analysis of charging items
Wei DING ; Hui ZHONG ; Ding-Sheng CHENG ; Xian-Li MA
Chinese Medical Equipment Journal 2018;39(5):78-80
Objective To analyze statistically the data on the charging items in some hospital to determine monitor equipment utilization rate in the nursing unit,so as to provide data support for proposing monitor equipment allocation scheme in the hospital.Methods Totally 571 pieces of monitor equipment were used as the subjects,and the records on the charging items in HIS database were extracted from January 1st 2016 to June 30th 2017.The monitor equipment utilization rates,that is,the daily hours of operation,in the nursing units were calculated,and then were compared and analyzed.Results The allocation of the monitor equipment proved reasonable although pre-purchase demonstration in some nursing units had no enough data support.Conclusion It's feasible to instruct equipment allocation with the utilization rate based on charging items analysis. [Chinese Medical Equipment Journal,2018,39(5):78-80]