[Objectives]To observe the effect of aqueous extract of Houttuynia cordata on the content of serum TNF-αand IL-6 in mice with abdominal infection caused by Staphylococcus aureus,Escherichia coli,Pseudomonas aeruginos...[Objectives]To observe the effect of aqueous extract of Houttuynia cordata on the content of serum TNF-αand IL-6 in mice with abdominal infection caused by Staphylococcus aureus,Escherichia coli,Pseudomonas aeruginosa,Proteus vulgaris and Klebsiella pneumoniae,so as to investigate the antibacterial effect of aqueous extract of Houttuynia cordata in vivo.[Methods]A total of 72 KM mice were randomly divided into six groups:model group,blank group,cefdinir dispersible tablet group(0.25 g/kg),high,medium and low dose groups of aqueous extract of Houttuynia cordata(40,20,10 g/kg crude drug).There were 12 mice in each group,half male and half female,continuously given intragastric administration for three days,once a day.The blank group and the model group were intragastrically infused with normal saline,and the other groups were given corresponding drugs with a volume of 0.02 mL/g.After 30 min of administration on the third day,the mice were injected intraperitoneally with 0.5 mL of bacterial suspension to make bacterial infection.The mice in the blank group were intraperitoneally injected with the same amount of normal saline,followed by intragastric administration 6 h after intraperitoneal injection and intragastric administration again after 24 h.The mice were observed for three days,and the changes of body weight before and after infection were recorded.On the fourth day of infection,eyeball blood was taken,serum was separated,and the concentration of inflammatory factors TNF-αand IL-6 in serum was determined.[Results]Compared with the model group,the high,medium and low dose groups of H.cordata aqueous extract had protective effects on mice with abdominal infection caused by S.aureus,E.coli,P.aeruginosa,P.vulgaris and K.pneumoniae,and decreased the content of TNF-αand IL-6 in serum.[Conclusions]The aqueous extract of H.cordata had a certain antibacterial effect on acute abdominal infection caused by S.aureus,E.coli,P.aeruginosa,P.vulgaris and K.pneumoniae,and its mechanism was related to TNF-αand IL-6.展开更多
【目的】建立提取鱼腥草叶片高质量RNA的有效方法。【方法】采用RNAiso for Polysaccharide-rich Plant Tissue法、十六烷基三甲基溴化铵(CTAB)法、十二烷基硫酸钠(SDS)Ⅰ法和SDSⅡ法提取鱼腥草叶片总RNA。在匀浆上清液抽提时分别选用6...【目的】建立提取鱼腥草叶片高质量RNA的有效方法。【方法】采用RNAiso for Polysaccharide-rich Plant Tissue法、十六烷基三甲基溴化铵(CTAB)法、十二烷基硫酸钠(SDS)Ⅰ法和SDSⅡ法提取鱼腥草叶片总RNA。在匀浆上清液抽提时分别选用6种试剂组合,通过现象观察,检测紫外吸光度值和琼脂糖凝胶电泳图,考察RNA的纯度、产率和完整性,比较各方法提取效果的差异。【结果】RNAiso for Polysaccharide-rich Plant Tissue法、CTAB法和SDSⅡ法使用苯酚/氯仿/异戊醇或NaCl加苯酚/氯仿/异戊醇抽提后,所得RNA纯度和完整性均好,最大得率为172.6μg/g。【结论】确定了鱼腥草总RNA提取的有效方法,为鱼腥草转录组研究打下基础。展开更多
基金Project of Improving the Basic Scientific Research Ability of Young and Middle-aged Teachers in Guangxi Colleges and Universities in 2019(2019KY0341)Laboratory of Pharmaceutical Chemistry and Quality Analysis of Chinese(Zhuang)Medicine in the Third-level Scientific Research Laboratory of the State Administration of Traditional Chinese Medicine(Guo Zhong Yi Yao Fa 200921).
文摘[Objectives]To observe the effect of aqueous extract of Houttuynia cordata on the content of serum TNF-αand IL-6 in mice with abdominal infection caused by Staphylococcus aureus,Escherichia coli,Pseudomonas aeruginosa,Proteus vulgaris and Klebsiella pneumoniae,so as to investigate the antibacterial effect of aqueous extract of Houttuynia cordata in vivo.[Methods]A total of 72 KM mice were randomly divided into six groups:model group,blank group,cefdinir dispersible tablet group(0.25 g/kg),high,medium and low dose groups of aqueous extract of Houttuynia cordata(40,20,10 g/kg crude drug).There were 12 mice in each group,half male and half female,continuously given intragastric administration for three days,once a day.The blank group and the model group were intragastrically infused with normal saline,and the other groups were given corresponding drugs with a volume of 0.02 mL/g.After 30 min of administration on the third day,the mice were injected intraperitoneally with 0.5 mL of bacterial suspension to make bacterial infection.The mice in the blank group were intraperitoneally injected with the same amount of normal saline,followed by intragastric administration 6 h after intraperitoneal injection and intragastric administration again after 24 h.The mice were observed for three days,and the changes of body weight before and after infection were recorded.On the fourth day of infection,eyeball blood was taken,serum was separated,and the concentration of inflammatory factors TNF-αand IL-6 in serum was determined.[Results]Compared with the model group,the high,medium and low dose groups of H.cordata aqueous extract had protective effects on mice with abdominal infection caused by S.aureus,E.coli,P.aeruginosa,P.vulgaris and K.pneumoniae,and decreased the content of TNF-αand IL-6 in serum.[Conclusions]The aqueous extract of H.cordata had a certain antibacterial effect on acute abdominal infection caused by S.aureus,E.coli,P.aeruginosa,P.vulgaris and K.pneumoniae,and its mechanism was related to TNF-αand IL-6.
文摘【目的】建立提取鱼腥草叶片高质量RNA的有效方法。【方法】采用RNAiso for Polysaccharide-rich Plant Tissue法、十六烷基三甲基溴化铵(CTAB)法、十二烷基硫酸钠(SDS)Ⅰ法和SDSⅡ法提取鱼腥草叶片总RNA。在匀浆上清液抽提时分别选用6种试剂组合,通过现象观察,检测紫外吸光度值和琼脂糖凝胶电泳图,考察RNA的纯度、产率和完整性,比较各方法提取效果的差异。【结果】RNAiso for Polysaccharide-rich Plant Tissue法、CTAB法和SDSⅡ法使用苯酚/氯仿/异戊醇或NaCl加苯酚/氯仿/异戊醇抽提后,所得RNA纯度和完整性均好,最大得率为172.6μg/g。【结论】确定了鱼腥草总RNA提取的有效方法,为鱼腥草转录组研究打下基础。
