This paper mainly discussed a bacterial stain with high flocculating activity isolated from cantaloupe juice .The strain was named Bacillus sp.B_(53) based on colony morphology, physiological and biochemistry experiments. The new flocculant was purified and shown to be a homopolymer of glutamic acid by HLPC analysis and thin layer chromatography, and presumed to be Poly ?-glutamic acid(?-PGA). ?-PGA 12.48g/L was achieved in shake flask. The purified material showed a absorption peak at 212nm, and was only composed of L-Glu. The MW could be detected through SDS-PAGE, and its MW was about a molecular mass between 440kD with 669kD. This bioflocculant efficiently flocculated various organic and inorganic suspensions. It's flocculanting effect on kaolin and ([BF]Ca(OH)_2[BFQ]) was superior to others.

There were 48 strains of bacilli obtained from 20 Chinese traditional medicines. Twenty-five strains had antagonistic effect against at least one of ten plant pathogens. Seven strains had antibiosis to more than four pathogens and the best strain had antibiosis to nine pathogens. After physiological and biochemical experiments,eight strains of 25 antagonistic bacilli were proved to be Bacillus subtilis,three were Bacillus cereus,one were Bacillus natto and one were Bacillus licheniformis. At the same time,two kinds of Chinese traditional medicines,which probably had antibacterial effect,were found.

Twenty-nine antagonistic bacillus strains, isolated from some Chinese traditional medicine and fermented food , inhibit the growth of Fusarium oxysporum f. sp. Vasinfectum and Verticillium dahliae Kleb. And twelve of them are able to produce antagonistic proteins. Among the twelve strains, five (H110, H184, H216, B316 and B382) showed higher antibacterial activity. Furthermore, H110 and H184 were identified as Bacillus subtilis, and H216, B316 and B382 as Bacillus licheniformis based on physiological and biochemistry experiments. The antagonistic proteins of five strains were all thermostable, resistant to proteinase K and trypsin, while H184 and H216 partially sensitive to pepsin.

To remedy the limitations of traditional numerical classification softwares,a new application,X-Cluster,was developed by using various design patterns.X-Cluster had powerful functions to support the researching of numerical classification,and testified by some classify studying about Bacillus spp..

In order to enhance the antitumor efficacy of recombinant Newcastle disease virus, rNDV-IL15 was rescued in this study. Recombinant plasmid prNDV-IL15 was constructed, and BHK21 cells were transfected with the recombinant plasmid. Finally, the recombinant Newcastle disease virus rNDV-IL15 was successfully rescued. The growth curves of these two recombinant viruses were determined. Murine melanoma B16F10 cells were infected with rNDV-IL15 at MOI of 0.1, and the expression level of IL15 in the supernatant was detected by ELISA. The antitumor efficacy of rNDV-IL15 and rNDV was compared in vitro and in vivo. Results showed that prNDV-IL15 was constructed and recombinant virus rNDV-IL15 was successfully rescued. The growth curve of rNDV-IL15 showed that the growth of rNDV-IL15 had not been changed after insertion of IL15 gene. Results showed that there was high level of IL15 expression in the supernatant of rNDV-IL5-infected B16F10 cells (1 044.3 +/- 27.7 ng x mL(-1)). rNDV-IL15 and rNDV significantly inhibited the growth of B16F10 cells in vitro in a time-dependent manner. However, there was no significant difference between them. In animal experiments, rNDV-IL15 efficiently suppressed tumor growth in vivo when compared with rNDV, and the difference was statistically significant. The results suggested that rNDV-IL15 is a more effective antitumor agent.
Animals ; Body Weight ; Cell Line, Tumor ; Cell Proliferation ; Chick Embryo ; Cytotoxicity, Immunologic ; Female ; Genetic Therapy ; Interleukin-15 ; genetics ; metabolism ; Melanoma, Experimental ; pathology ; therapy ; Mice ; Neoplasm Transplantation ; Newcastle disease virus ; genetics ; Plasmids ; Recombinant Proteins ; genetics ; metabolism ; Transfection ; Tumor Burden

To investigate the cell-killing effect and its possible mechanism of rClone30-hDR5 in combination with TRAIL on human hepatic carcinoma (HCC) cell line, first of all, recombinant plasmid pee12.4-hDR5 was introduced into HepG2 cells by liposome transfection. After five rounds of screening by flow cytometry, HepG2 cells expressing high levels of DR5 on cell surface were isolated. The cytotoxicity of TRAIL to selected cells was higher than that of TRAIL to HepG2 cells by MTT method (P < 0.01). The result suggested that the cloned hDR5 gene had biological activity. MTT assay showed that, rClone30- hDR5 in combination with TRAIL more efficiently inhibited the tumor growth of HepG2 cells compared to rClone30-hDR5 or TRAIL in vitro. The results of Annexin V-FITC/PI staining and Quantitative Real-time PCR indicated that rClone30-hDR5 in combination with TRAIL significantly increased the mRNA levels of caspase 3 and caspase 8, and induced the apoptosis of tumor cells. HepG2 cells were infected with rClone30-hDR5 or rClone30 at MOI of 1. The expression of hDR5 on tumor surface increased significantly by rClone30-hDR5 compared to that by rClone30, which contributed to the sensitivity to TRAIL. In conclusion, rClone30-hDR5 in combination with TRAIL has potential application value in cancer treatment.
Apoptosis ; Carcinoma, Hepatocellular ; pathology ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Drug Synergism ; Hep G2 Cells ; Humans ; Liver Neoplasms ; pathology ; Real-Time Polymerase Chain Reaction ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; pharmacology ; TNF-Related Apoptosis-Inducing Ligand ; pharmacology ; Transfection

Previous studies proposed that the synergistic effect of fibroblast growth factor-21 (FGF-21) and insulin may be due to the improvement of insulin sensitivity by FGF-21. However, there is no experimental evidence to support this. This study was designed to elucidate the mechanism of synergistic effect of FGF-21 and insulin in the regulation of glucose metabolism. The synergistic effect of FGF-21 and insulin on regulating glucose metabolism was demonstrated by investigating the glucose absorption rate by insulin resistance HepG2 cell model and the blood glucose chances in type 2 diabetic db/db mice after treatments with different concentrations of FGF-21 or/and insulin; The synergistic metabolism was revealed through detecting GLUT1 and GLUT4 transcription levels in the liver by real-time PCR method. The experimental results showed that FGF-21 and insulin have a synergistic effect on the regulation of glucose metabolism. The results of real-time PCR showed that the effective dose of FGF-21 could up-regulate the transcription level of GLUT1 in a dose-dependent manner, but had no effect on the transcription level of GLUT4. Insulin (4 u) alone could up-regulate the transcription level of GLUT4, yet had no effect on that of GLUT1. Ineffective dose 0.1 mg kg(-1) FGF-21 alone could not change the transcription level of GLUT1 or GLUT4. However, when the ineffective dose 0.1 mg x kg(-1) FGF-21 was used in combination with insulin (4 u) significantly increased the transcription levels of both GLUT1 and GLUT4, the transcription level of GLUT1 was similar to that treated with 5 time concentration of FGF-21 alone; the transcription level of GLUT4 is higher than that treated with insulin (4 u) alone. In summary, in the presence of FGF-21, insulin increases the sensitivity of FGF-21 through enhancing GLUT1 transcription. Vice versa, FGF-21 increases the sensitivity of insulin by stimulating GLUT4 transcription in the presence of insulin. FGF-21 and insulin exert a synergistic effect on glucose metabolism through mutual sensitization.
Animals ; Blood Glucose ; Diabetes Mellitus, Experimental ; metabolism ; Drug Synergism ; Fibroblast Growth Factors ; pharmacology ; Glucose ; metabolism ; Glucose Transporter Type 1 ; metabolism ; Glucose Transporter Type 4 ; metabolism ; Hep G2 Cells ; Humans ; Insulin ; pharmacology ; Insulin Resistance ; Liver ; metabolism ; Mice

Objectives: To evaluate the clinical implication of notch (N) Wave in ECG for patients with left circumflex artery-related acute myocardial infarction. Methods: A total of 416 patients with left circumflex artery-related acute myocardial infarction hospitalized in our hospital from January 2013 to December 2016 were included in this study. According to the electrocardiogram, 156 people were divided into ST segment elevation myocardial infarction group, 108 patients in N wave non-ST segment elevation myocardial infarction group, and 152 patients in non-N wave NSTEMI group. Troponin I and creatine kinase isoenzyme, hospitalization to operation time, vascular lesion site and degree, the intraoperative and postoperative complications were compared among the 3 groups. Results: Troponin I and creatine kinase isoenzyme levels were significantly lower in non-N wave NSTEMI group than in STEMI group and N wave NSTEMI group (P<0.05). The occurrence rate of no-reflow phenomenon was significantly higher in N wave NSTEMI group than in STEMI group and non N wave NSTEMI group (P<0.05). There was no significant difference in incidence of cardiac shock, ventricular fibrillation, ventricular aneurysm and death rate among the 3 groups(P>0.05). Incidence rate of lesion located in the proximal and middle section of left circumflex artery as well as the mean vascular stenosis degree were significantly lower, while incidence rate of lesion located in the distal section of left circumflex artery and obtuse marginal branches was significantly higher in non N wave NSTEMI group than in STEMI group and N wave NSTEMI group(P<0.05). Conclusions: Presence of Notch wave in ECG is associated with higher incidence of lesion located in the proximal and middle section of left circumflex artery, larger infarct size and higher incidence of no-reflow in patients with left circumflex artery-related acute myocardial infarction.

Objective To study the influence of melatonin(MT)on the sleep of anxiety and depression in elderly with sleep disorder and elderly patients with non-acute cardiac and/or cerebral vascular diseases.Methods The effect of melatonin on sleep Was assessed in a multi-centers,randomized,double blinded and placebo paralleled comparison clinical study.Two hundreds twenty-four participants aged over 60 years old were cases in sub-health state or with non-acute cardiac and/or cerebral Vascular diseases.They were randomly seperated into two groups,and received ether MT(3-6 mg once daily)or starch for 6 months.AU of the subjects were assessed with Pittsburgh sleep quality index(PSQI).Results The participants'total score of PSQI decreased significantly after 1-6 months use of melatonin,representing the remarkable improvement in sleep quality.After the first month.69.3% showed improvement in sleep quality;through the second,third,fourth,five month,the improvement in total score had been going on,and was significantly better in melatonin group than the control group.At the end of the six month,the sleep quality showed the best improvement,with a 91.2% effective rate.Conclusion Melatonin has an remarkable physical effect of improving the sleep quality in old people.

This study focused on the ameliorative effects of gypenosides(GPS) on insulin sensitivity and inflammatory factors in rats with type 2 diabetes mellitus(T2 DM) and explored their possible molecular mechanisms. After the successful establishment of T2 DM model, diabetic rats were randomly divided into four groups, including model group, GPS groups(200, 100 mg·kg~(-1)) and metformin group(100 mg·kg~(-1)), with healthy rats serving as the control. After 6-week intragastric administration, fasting blood glucose(FBG) and oral glucose tolerance were examined. The levels of insulin, C-peptide, tumor necrosis factor-α(TNF-α), interleukin-1β(IL-1β), interleukin-6(IL-6) and C-reactive protein(CRP) in serum were examined. Then the homeostasis model assessment of insulin resistance(HOMA-IR) and insulin sensitivity index(ISI) were calculated. The protein expression levels of phosphorylated insulin receptor substrate-1(p-IRS-1) and phosphorylated protein kinase B(p-Akt) in skeletal muscle were measured by Western blot, as well as those of phosphorylated inhibitor of nuclear factor-κB(NF-κB) kinase β(p-IKKβ), phosphorylated alpha inhibitor of NF-κB(p-IκBα) and phosphorylated p65 subunit of NF-κB(p-p65) in adipose tissue. The relative expression levels of glucose transporter 4(GLUT4) mRNA in skeletal muscle and NF-κB mRNA in adipose tissue were measured by qRT-PCR, and the morphological changes of pancreatic tissue were observed. Compared with the model group, the GPS groups witnessed significant decrease in FBG, marked amelioration of impaired oral glucose tolerance and significant increase in ISI. Further, the high-dose GPS group saw significantly reduced HOMA-IR, TNF-α, IL-1β and CRP, significantly increased expression levels of p-IRS-1(Tyr), p-Akt and GLUT4, and markedly inhibited p-IRS-1(Ser), p-IKKβ, p-IκBα, p-p65 and NF-κB. The concentration of CRP and the expression levels of p-IRS-1(Ser), p-IKKβ, p-IκBα and NF-κB were remarkably reduced in the low-dose GPS group. However, GPS was found less effective in the regulation of serum insulin, C-peptide and IL-6 levels and the alleviation of pancreatic islet injury. The results indicated that GPS can reduce FBG and improve insulin sensitivity in diabetic rats possibly by regulating the NF-κB signaling pathway, inhibiting inflammation, and thereby regulating the expression of key proteins in the insulin signaling pathway.
Animals ; Diabetes Mellitus, Experimental/drug therapy* ; Diabetes Mellitus, Type 2/genetics* ; Gynostemma ; Insulin ; Insulin Resistance ; NF-kappa B/metabolism* ; Plant Extracts ; Rats ; Signal Transduction