Inhibitory effect of Gallnut on Candida albicans biofilm / 中国生化药物杂志

Objective To study the inhibitory effect of Gallnut on the biofilm of Candida albicans. Methods MTT assay was used to determine the inhibitory effect of Gallnut on biofilm formation and mature biofilm. RT-PCR was used to determine the effect of Gallnut on the expressions of ALS1 and CPH1 genes. Results Gallnut has a stronger inhibitory effect on Candida albicans biofilm formation, the minimum inhibitory concentration (MIC) and the minimum fungicidal concentration (MFC) for inhibition of biofilm formation both are 128mg/mL. Gallnut also has a strong inhibitory effect on the mature biofilm of Candida albicans, the minimum inhibitory concentration (MIC) is 256mg/mL. Gallnut could significantly reduce the gene expressions of ALS1 and CPH1. Compared with the control group, 64 mg/mL Gallnut act on Candida albicans after 16h, the gene expression of ALS1 and CPH1 decreased by 79.2% and 82.0% respectively. Conclusion Gallnut has a significant inhibitory effect on the formation and maturation of Candida albicans biofilm. The inhibitory effect of Gallnut on the adherence and invasion of Candida albicans is mainly through inhibiting the expressions of ALS1 and CPH1 genes.

Effects of nicotine on proliferation and chemosensitivity of A549 cells / 中国生化药物杂志

Objective To investigate the effect of nicotine on proliferation and chemosensitivity of A549 cells in vitro. Methods A549 cells was assessed by MTT assay to measure cell proliferation and was assessed by RT-PCR tomeasure chemosensitivity. Results 0.01~100μmol/L nicotine could promote the proliferation of A549 cells, the most marked proliferation at 1μmol/L, compared with the control group, the activity of A549 cells was increased by 1.85 times (P<0.01). When the concentration of nicotine above 1μmol/L, the proliferation of A549 cells had an decreasing tendency. When the concentration above 1000μmol/L, the proliferation of A549 cells can be inhibited. Nicotine can also reduce chemosensitivity of A549 cells to 5-FU, with the addition of nicotine, A549 cells survival rate increased significantly, the most marked at 1μmol/L, compared with the control group, the inhibitory rate of A549 cells was 9 % (P< 0.01). Nicotine significantly increased the expression level of α7 nAChR in A549 cells and decreased the expression of PTEN , in a concentration dependent manner. Compared with the control group, 1μmol/L of nicotine could increase the expression levels of α7 nAChR by 3.4 fold, and decrease the expression levels of PTEN by 60.36 % (P< 0.01). Conclusion Nicotinecan promote the growth of A549 cells and reduce chemosensitivity of A549 cells to 5-FU.

Effects of mung beans, honey and yogurt on the activity of alcohol dehydrogenase and aldehyde dehydrogenase / 中国生化药物杂志

Objective To study the effect of mung beans, honey and yogurt on the activity of alcohol dehydrogenase and aldehyde dehydrogenase. Methods KM mice were randomly divided into four groups, and ig. with mung beans juice, honey liguid and yogurt. After 3h' treatment, blood were obtained from orbit and the activities of alcohol dehydrogenase and aldehyde dehydrogenase were detected and compared. Results Showed mung bean, honey and yogurt has a role in promoting the activities of alcohol dehydrogenase and aldehyde dehydrogenase, which was mung bean > honey > yogurt. Compared with control group, mung beans can increase the activities of alcohol dehydrogenase and aldehyde dehydrogenase by 22.98 U/ml and 6.02 U/ml,respectively(P<0.01 ). Conclusion Mung bean, honey and yogurt can promote the alcohol dehydrogenase and aldehyde dehydrogenase activity, has a hangover effect.

Inhibitory effect of Gallnut on Candida albicans biofilm / 中国生化药物杂志

Objective To study the inhibitory effect of Gallnut on the biofilm of Candida albicans. Methods MTT assay was used to determine the inhibitory effect of Gallnut on biofilm formation and mature biofilm. RT-PCR was used to determine the effect of Gallnut on the expressions of ALS1 and CPH1 genes. Results Gallnut has a stronger inhibitory effect on Candida albicans biofilm formation, the minimum inhibitory concentration (MIC) and the minimum fungicidal concentration (MFC) for inhibition of biofilm formation both are 128mg/mL. Gallnut also has a strong inhibitory effect on the mature biofilm of Candida albicans, the minimum inhibitory concentration (MIC) is 256mg/mL. Gallnut could significantly reduce the gene expressions of ALS1 and CPH1. Compared with the control group, 64 mg/mL Gallnut act on Candida albicans after 16h, the gene expression of ALS1 and CPH1 decreased by 79.2% and 82.0% respectively. Conclusion Gallnut has a significant inhibitory effect on the formation and maturation of Candida albicans biofilm. The inhibitory effect of Gallnut on the adherence and invasion of Candida albicans is mainly through inhibiting the expressions of ALS1 and CPH1 genes.

Effects of nicotine on proliferation and chemosensitivity of A549 cells / 中国生化药物杂志

Objective To investigate the effect of nicotine on proliferation and chemosensitivity of A549 cells in vitro. Methods A549 cells was assessed by MTT assay to measure cell proliferation and was assessed by RT-PCR tomeasure chemosensitivity. Results 0.01~100μmol/L nicotine could promote the proliferation of A549 cells, the most marked proliferation at 1μmol/L, compared with the control group, the activity of A549 cells was increased by 1.85 times (P<0.01). When the concentration of nicotine above 1μmol/L, the proliferation of A549 cells had an decreasing tendency. When the concentration above 1000μmol/L, the proliferation of A549 cells can be inhibited. Nicotine can also reduce chemosensitivity of A549 cells to 5-FU, with the addition of nicotine, A549 cells survival rate increased significantly, the most marked at 1μmol/L, compared with the control group, the inhibitory rate of A549 cells was 9 % (P< 0.01). Nicotine significantly increased the expression level of α7 nAChR in A549 cells and decreased the expression of PTEN , in a concentration dependent manner. Compared with the control group, 1μmol/L of nicotine could increase the expression levels of α7 nAChR by 3.4 fold, and decrease the expression levels of PTEN by 60.36 % (P< 0.01). Conclusion Nicotinecan promote the growth of A549 cells and reduce chemosensitivity of A549 cells to 5-FU.

Effects of mung beans, honey and yogurt on the activity of alcohol dehydrogenase and aldehyde dehydrogenase / 中国生化药物杂志

Objective To study the effect of mung beans, honey and yogurt on the activity of alcohol dehydrogenase and aldehyde dehydrogenase. Methods KM mice were randomly divided into four groups, and ig. with mung beans juice, honey liguid and yogurt. After 3h' treatment, blood were obtained from orbit and the activities of alcohol dehydrogenase and aldehyde dehydrogenase were detected and compared. Results Showed mung bean, honey and yogurt has a role in promoting the activities of alcohol dehydrogenase and aldehyde dehydrogenase, which was mung bean > honey > yogurt. Compared with control group, mung beans can increase the activities of alcohol dehydrogenase and aldehyde dehydrogenase by 22.98 U/ml and 6.02 U/ml,respectively(P<0.01 ). Conclusion Mung bean, honey and yogurt can promote the alcohol dehydrogenase and aldehyde dehydrogenase activity, has a hangover effect.

Inhibitory effect of pumpkin protein on expression of Notch signal in RPMI8226 myeloma cells / 中国实验血液学杂志

This study was aimed to explore the inhibitory effect of pumpkin protein (cucurmosin, CUS) on proliferation of RPMI8226 myeloma cells in vitro and its mechanism. Western blot was used to detect the expression level of Notch-1, Jagged-2, P-Akt and NF-KB in the myeloma cells treated by different concentrations of CUS. The results demonstrated that CUS could down-regulate the protein expression levels of Notch1, Jagged-2, P-Akt and NF-KB in the myeloma cells and with time-and concentration-dependent way, at the same time CUS could also decrease the expressions of BCL-2 and P-Akt. It is concluded that CUS can obviously inhibit the RPMI8226 cell proliferation in vitro, down-regulate the expression levels of Notch signal and its down-stream target genes. Therefore, Notch signaling pathway can be used as a new treatment target for multiple myeloma, and CUS may be become a potential new drug for regulating Notch signaling pathway.

Effect of cucurmosin on chronic myeloid leukemia K562 cell line / 中国实验血液学杂志

This study was aimed to investigate the antitumor effect of pumpkin protein (cucurmosin, CUS) on subcutaneous transplant tumor in chronic myeloid leukemia K562 cell-NOD/SCID mice and leukemia model. The subcutaneous transplant tumor in K562-NOD/SCID mice and leukemia model were established; using two models, the antitumor activity of CUS in mice was evaluated. The results indicated that the inhibitory rate of 0.5 mg/kg and 1 mg/kg CUS on subcutaneous transplant tumor were 53.45% and 59.43% respectively; survival time of mice received 0.25 mg/kg and 0.5 mg/kg CUS was 39.8 ± 5.5 d and 43.4 ± 6.6 d, antitumor rate was 24.9% and 36% respectively. It is concluded that CUS has significant inhibitory effect on mice with CML cell line K562.

Proliferation inhibition and apoptosis induction of cucurmosin on human pancreatic cancer CFPAC-1 cells / 中国药学杂志

OBJECTIVE: To investigate the mechanism that cucurmosin (CUS) induces the apoptosis of human pancreatic cancer cell line CFPAC-1. METHODS: The inhibition effect of cucurmosin on CFPAC-1 cell was detected by MTT assay. The apoptosis was observed by transmission electron microscope. The cell cycle and apoptosis rate were analyzed by flow cytometry. The expressions of caspase-3 and bcl-2 protein were determined by Westernblot. RESULTS: After CFPAC-1 cells were treated with cucurmosin of 0.03125, 0.0625,0.125,0.25,0.5, 1 and 2 μmol · L-1 for 24,48 and 72 h, the proliferation of CFPAC-1 cells was inhibited in a time- and dose- dependent manner(P<0.05). After CFPAC-1 cells were treated with 1 μmol · L-1 cucurmosin for 72 h, typical apoptosis changes were observed under transmission electron microscope. Compared with control group, more cells were arrested at G0/G1 phases (P<0.05) and fewer cells were at S phases(P<0.05). CUS decreased the speed of cell-cycle progression from G0/G1 phase into S phase. After CFPAC-1 cells were treated without(control) or with cucurmosin of 0.062 5,0.25 and 1 μmol · L-1 for 72 h, the apoptosis rates of CFPAC-1 cells were (0.33±0.37)%, (19.26±1.49)%,(37.13±2.07)% and (55.64±2.91)%, respectively. The expression of caspase-3 was elevated, whereas the expression of Bcl-2 was lessened gradually. CONCLUSION: Cucurmosin induces the apoptosis of pancreatic cancer CFPAC-1 cells through up-regulating the expression of caspase-3 and down-regulating the expression of bcl-2.

Triterpenes from root of Rhaponticum uniflorum / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of the root of Rhaponticum uniflorum.</p><p><b>METHOD</b>Separation and purification were performed on silica gel and Sephadex LH-20 column chromatography. Their structure were elucidated on the basis of physicochemical and spectral analysis.</p><p><b>RESULT</b>Five triterpenoid compounds were isolated and identified as ursolic acid (1), 3-oxo-19alpha-hydroxyurs-12-en-28-oic acid (2), pomolic acid (3), arjunic acid (4) and tormentic acid (5), respectively.</p><p><b>CONCLUSION</b>Compounds 1 approximately 5 were isolated from the genus Rhaponticum for the first time.</p>