1.Effect of Temperature and Carbon Source on the N-acyl-homoserine Lactones Production by Food-derived Pseudomonas
Guo-Hong QI ; Ming-Sheng DONG ;
China Biotechnology 2006;0(08):-
7.5). Overall,the research demonstrates the effect of environmental parameters (temperature and carbon source) on AHL profile production by food-derived Pseudomonas. It lays the foundation for further investigation to elucidate the relationship between quorum sensing and food spoilage,and for the development of new food preservative by blocking the quorum sensing of food spoilage bacteria.
2.Research on Quorum Sensing Signal Molecules of Pseudomonas spp.Isolated from Food
Guo-Hong QI ; Ming-Sheng DONG ;
Microbiology 1992;0(01):-
Three Gram-negative bacteria from commercial fresh fish were identified as Pseudomonas sp.,an important food spoilage bacteria, on the basis of 16S rDNA sequences.N-aeyl-homoserine lactones (AHLs) were the important quorum sensing molecules and regulated the expression of many characteristics in a cell-density-dependent manner in Gram-negative bacteria.The AHL biosensor detection revealed that three isolates produced AHLs molecules and strains FML05-1 and FML05-2 produced two types of AHLs at least and the main signal mole- cules were N-3-oxo-octanoyl-homoserine lactone(N-3-oxo-C_8-AHL).ALso the amount of AHL in FML05-2 reached to the maximum at 12h throughout growth.This was first study of quorum sensing signal molecule AHLs produced by the pseudomonas from food and layed the foun- dation for new strategies of food preservation based on interfering in quorum sensing of spoilage bacteria.
3.Effect of exterior point application combined with herbal concentrate-granules on 60 cases of asthma
Qi WANG ; Ming YAO ; Xuefeng YU ; Zhenwu GUO ; Yan MENG
International Journal of Traditional Chinese Medicine 2013;(3):211-213
Objective To observe the effect of combined therapy of external point application and herbal concentrate-granules on patients with asthma (hot wheezing in TCM).Methods 60 patients suffering from onset period of bronchial asthma were randomized to a control group and a treatment group.The control group was given budesonide inhaler and theophylline sustained release tablets.The treatment group was given combined therapy of external point application and herbal concentrate-granules.The course of treatment was 10 days.To observe the value ofFEV1%,ACT scores and TCM syndrome scores etc.Results After treatment,the value of FEV 1% [treatment group:(82.83 ± 11.35) %,control group:(83.85 ± 16.72) %] and ACT [treatment group:(19.86±2.32),control group:(19.66±2.54)] in both groups were markedly increased with statistical significance (P<0.01); and the difference between the two groups were also significant; TCM syndrome scoring [treatment group:(4.27±3.65),control group:(5.05±4.14)] was notably decreased in both groups compared with the values before the treatment with statistical significance (P<0.01); but the difference between the two groups was not significant (P>0.05).Conclusion The combined therapy of external point application and herbal concentrate-granules can treat bronchial asthma in the acute clinical course and improve lung function.
4.Isolation and Characterization of a New High Efficient H2-producing Bacterium Enterococcus sp. LG1
Yu-Liang LI ; Xiao-Ming LI ; Liang GUO ; Yi ZHOU ; Guang-Ming ZENG ; Qi YANG ; De-Xiang LIAO ;
Microbiology 2008;0(09):-
12 strains of H2-producing bacteria were isolated and purified from anaerobic sludge, aerobic sludge and river bottom sludge by Hungate method. A new species of high efficient hydrogen production bacterium Enterococcus sp. LG1 (registration number: EU258743 ) was studied deeply. It was showed that the Enterococcus sp. LG1 was an anaerobic and Gram-negative bacterium. Sequence analysis of this type of clones showed that it was affiliated with the genus Enterococcus and it was not reported yet in other paper at present. Meanwhile, batch tests of anaerobic fermentative hydrogen production by Enterococcus sp. LG1 were investigated by using sterilization pretreated sludge as substrate. The changes of soluble COD, protein, carbohydrate and pH value during hydrogen fermentation were monitored. It was found that only hydrogen and carbon dioxide were produced by this strain and no methane was detected during fermentation. The maximal hydrogen yield was 36.48 mL/g TCOD and the hydrogen concentration in the gas phase was 73.5%. The Enterococcus sp. LG1 was a butyrate fermentation bacteria analyzed by metabolites.
5.The prospective register study of domestic tirofiban for clinical application in acute coronary syndrome
Wei DONG ; Yundai CHEN ; Geng QIAN ; Jincheng GUO ; Guoxian QI ; Ming YANG
Chinese Journal of Internal Medicine 2013;52(10):815-818
Objective To evaluate the current clinical application of domestic tirofiban in patients with acute coronary syndrome (ACS) and to explore its safety profile focused on the common causes and correlation factors for the hemorrhagic events.Methods The patients diagnosed as ST-elevation myocardial infarction (STEMI) and medium to high risk non-ST-elevation myocardial infarction (NSTEMI)/ unstable angina(UA) in 15 hospitals from September 2009 to December 2011 and given domestic tirofiban,were enrolled in this study.The following data were carefully collected:demographic data,comorbidities,concomitant medications,laboratory data,interventional treatment,application of tirofiban,hemorrhagic events and major adverse cardiac events(MACE) in hospital and at day 30 after discharge.Results (1) A total of 927 patients were enrolled in the study.The domestic tirofiban was given to 241 subjects (26.0%) before the intervention,567 subjects (61.2%) during the intervention and 89 subjects (9.6%) after the intervention.The standardized application was performed in 737 subjects (79.5%) with the loading dose of 10 μg/kg and the maintenance dose of 0.15 μg · kg-1 · min-1 In all the subjects,the average maintenance time was (30.4 ± 14.2) hours with the average dose of (339.3 ± 182.9)ml.(2)During hospitalization,major bleeding happened in 4 cases(0.4%) and major adverse cardiac events (MACE) in 37 cases (4.0%).(3)At day 30 after discharge,1 cases (0.1%)was reported with major bleeding and 9 cases (1.0%) with MACE.(3)The least MACE was showed in the preoperative tirofiban group (2.5%) and followed by the intraoperative group (4.1%) and the postopcrative group (9.0%).Compared with the non-standardized application group,MACE was significantly decreased in the standardized application group (2.44% vs 10.00%,P < 0.05).Conclusions The standardized application of the domestic tirofiban could decrease the incidence of MACE.Taken into account the combination therapy of clopidogrel and aspirin in the vast majority of patients,the domestic tirofiban exhibits a good safety profile with a relatively lower incidence of bleeding than the similar clinical studies.
6.Decrease in serum uric acid following achieving treat-to-target levels of glycemia,lipidemia and blood pressure in type 2 diabetic patients
Ming LI ; Lina ZHANG ; Qi PAN ; Xiaoxia WANG ; Xiaoping LIU ; Lixin GUO ; Yao WANG
Chinese Journal of Endocrinology and Metabolism 2009;25(2):168-169
After target blood glucose (HbA1C,fasting plasma glucose),serum lipid profiles (total cholesterol,triglyeeride) and control of blood pressure were achieved in 532 patients with type 2 diabetes mellitus, the level of serum uric acid was significantly decreased and the number of case of hyperuricacidemia also reduced (all P<0.01).
7.Analysis and evaluation of nutritive elements in aerial part of Panax notoginseng.
Yuan QU ; Ying LIU ; Lu-Qi HUANG ; Lan-Ping GUO ; Xiu-Ming CUI
China Journal of Chinese Materia Medica 2014;39(4):601-605
OBJECTIVETo make full use of the plant resources of Panax notoginseng, nutritional compositions and mineral elements were analyzed in aerial part of P. notoginseng from different areas in Yunnan.
METHODUsing the national standard method, water, ash, crude fat, crude fiber, crude protein and mineral elements were determined in aerial part of P. notoginseng from different growing areas.
RESULTResults showed that there were higher contents of crude fiber and crude protein, and lower content of crude fat in the stems and flowers of P. notoginseng. Meanwhile, a large number of mineral elements were determined in two locations of P. notoginseng, and the contents of Zn, Fe, Mn, Ca and Mg were obvious higher among these mineral elements.
CONCLUSIONThis study showed that the stems and flowers of P. notoginseng were nutritious and suggested that the aerial part may be utilized as new resources foods.
Flowers ; chemistry ; Nutritive Value ; Panax notoginseng ; chemistry ; Plant Extracts ; analysis ; Plant Leaves ; chemistry ; Plant Stems ; chemistry ; Trace Elements ; analysis
8.Chinese Sanqi industry status and development countermeasures.
Xiu-Ming CUI ; Lu-Qi HUANG ; Lan-Ping GUO ; Da-Hui LIU
China Journal of Chinese Materia Medica 2014;39(4):553-557
Sanqi (Panax notoginseng) is a valuable unique herb, and is also one of the very fast developed varieties of traditional Chinese medicines in recent years with increasing role in traditional Chinese medicine industry. This paper summarized the main experience, industry development and present situation, pointed out the main problems existing in the industry development. On this basis, we put forward the targets and measures for the development of the Sanqi industry in to provide decision-making reference for the sustainable development of the Sanqi industry in China.
China
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Drug Industry
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economics
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trends
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Drugs, Chinese Herbal
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analysis
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economics
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Medicine, Chinese Traditional
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economics
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trends
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Panax notoginseng
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chemistry
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growth & development